diff --git a/.github/dependabot.yml b/.github/dependabot.yml index b76b895..f0f21c5 100644 --- a/.github/dependabot.yml +++ b/.github/dependabot.yml @@ -4,7 +4,5 @@ updates: directory: "/" schedule: interval: "daily" - - package-ecosystem: "github-actions" - directory: "/" - schedule: - interval: "daily" + target-branch: "develop" + diff --git a/AGENTS.md b/AGENTS.md new file mode 100644 index 0000000..afe8075 --- /dev/null +++ b/AGENTS.md @@ -0,0 +1,161 @@ +# Guidance for AI agents, bots, and humans contributing to Chronicle Software's OpenHFT projects. + +LLM-based agents can accelerate development only if they respect our house rules. This file tells you: + +* how to run and verify the build; +* what *not* to comment; +* when to open pull requests. + +## Language & character-set policy + +| Requirement | Rationale | +|--------------|-----------| +| **British English** spelling (`organisation`, `licence`, *not* `organization`, `license`) except technical US spellings like `synchronized` | Keeps wording consistent with Chronicle's London HQ and existing docs. See the University of Oxford style guide for reference. | +| **ASCII-7 only** (code-points 0-127). Avoid smart quotes, non-breaking spaces and accented characters. | ASCII-7 survives every toolchain Chronicle uses, incl. low-latency binary wire formats that expect the 8th bit to be 0. | +| If a symbol is not available in ASCII-7, use a textual form such as `micro-second`, `>=`, `:alpha:`, `:yes:`. This is the preferred approach and Unicode must not be inserted. | Extended or '8-bit ASCII' variants are *not* portable and are therefore disallowed. | + +## Javadoc guidelines + +**Goal:** Every Javadoc block should add information you cannot glean from the method signature alone. Anything else is +noise and slows readers down. + +| Do | Don’t | +|----|-------| +| State *behavioural contracts*, edge-cases, thread-safety guarantees, units, performance characteristics and checked exceptions. | Restate the obvious ("Gets the value", "Sets the name"). | +| Keep the first sentence short; it becomes the summary line in aggregated docs. | Duplicate parameter names/ types unless more explanation is needed. | +| Prefer `@param` for *constraints* and `@throws` for *conditions*, following Oracle’s style guide. | Pad comments to reach a line-length target. | +| Remove or rewrite autogenerated Javadoc for trivial getters/setters. | Leave stale comments that now contradict the code. | + +The principle that Javadoc should only explain what is *not* manifest from the signature is well-established in the +wider Java community. + +## Build & test commands + +Agents must verify that the project still compiles and all unit tests pass before opening a PR: + +```bash +# From repo root +mvn -q verify +``` + +## Commit-message & PR etiquette + +1. **Subject line <= 72 chars**, imperative mood: "Fix roll-cycle offset in `ExcerptAppender`". +2. Reference the JIRA/GitHub issue if it exists. +3. In *body*: *root cause -> fix -> measurable impact* (latency, allocation, etc.). Use ASCII bullet points. +4. **Run `mvn verify`** again after rebasing. + +## What to ask the reviewers + +* *Is this AsciiDoc documentation precise enough for a clean-room re-implementation?* +* Does the Javadoc explain the code's *why* and *how* that a junior developer would not be expected to work out? +* Are the documentation, tests and code updated together so the change is clear? +* Does the commit point back to the relevant requirement or decision tag? +* Would an example or small diagram help future maintainers? + +## Project requirements + +See the [Decision Log](src/main/adoc/decision-log.adoc) for the latest project decisions. +See the [Project Requirements](src/main/adoc/project-requirements.adoc) for details on project requirements. + +## Elevating the Workflow with Real-Time Documentation + +Building upon our existing Iterative Workflow, the newest recommendation is to emphasise *real-time updates* to documentation. +Ensure the relevant `.adoc` files are updated when features, requirements, implementation details, or tests change. +This tight loop informs the AI accurately and creates immediate clarity for all team members. + +### Benefits of Real-Time Documentation + +* **Confidence in documentation**: Accurate docs prevent miscommunications that derail real-world outcomes. +* **Reduced drift**: Real-time updates keep requirements, tests and code aligned. +* **Faster feedback**: AI can quickly highlight inconsistencies when everything is in sync. +* **Better quality**: Frequent checks align the implementation with the specified behaviour. +* **Smoother onboarding**: Up-to-date AsciiDoc clarifies the system for new developers. +* **Incremental changes**: AIDE flags newly updated files so you can keep the documentation synchronised. + +### Best Practices + +* **Maintain Sync**: Keep documentation (AsciiDoc), tests, and code synchronised in version control. Changes in one area should prompt reviews and potential updates in the others. +* **Doc-First for New Work**: For *new* features or requirements, aim to update documentation first, then use AI to help produce or refine corresponding code and tests. For refactoring or initial bootstrapping, updates might flow from code/tests back to documentation, which should then be reviewed and finalised. +* **Small Commits**: Each commit should ideally relate to a single requirement or coherent change, making reviews easier for humans and AI analysis tools. +- **Team Buy-In**: Encourage everyone to review AI outputs critically and contribute to maintaining the synchronicity of all artefacts. + +## AI Agent Guidelines + +When using AI agents to assist with development, please adhere to the following guidelines: + +* **Respect the Language & Character-set Policy**: Ensure all AI-generated content follows the British English and ASCII-7 guidelines outlined above. +Focus on Clarity: AI-generated documentation should be clear and concise and add value beyond what is already present in the code or existing documentation. +* **Avoid Redundancy**: Do not generate content that duplicates existing documentation or code comments unless it provides additional context or clarification. +* **Review AI Outputs**: Always review AI-generated content for accuracy, relevance, and adherence to the project's documentation standards before committing it to the repository. + +## Company-Wide Tagging + +This section records **company-wide** decisions that apply to *all* Chronicle projects. All identifiers use the --xxx prefix. The `xxx` are unique across in the same Scope even if the tags are different. Component-specific decisions live in their xxx-decision-log.adoc files. + +### Tag Taxonomy (Nine-Box Framework) + +To improve traceability, we adopt the Nine-Box taxonomy for requirement and decision identifiers. These tags are used in addition to the existing ALL prefix, which remains reserved for global decisions across every project. + +.Adopt a Nine-Box Requirement Taxonomy + +|Tag | Scope | Typical examples | +|----|-------|------------------| +|FN |Functional user-visible behaviour | Message routing, business rules | +|NF-P |Non-functional - Performance | Latency budgets, throughput targets | +|NF-S |Non-functional - Security | Authentication method, TLS version | +|NF-O |Non-functional - Operability | Logging, monitoring, health checks | +|TEST |Test / QA obligations | Chaos scenarios, benchmarking rigs | +|DOC |Documentation obligations | Sequence diagrams, user guides | +|OPS |Operational / DevOps concerns | Helm values, deployment checklist | +|UX |Operator or end-user experience | CLI ergonomics, dashboard layouts | +|RISK |Compliance / risk controls | GDPR retention, audit trail | + +`ALL-*` stays global, case-exact tags. Pick one primary tag if multiple apply. + +### Decision Record Template + +```asciidoc +=== [Identifier] Title of Decision + +- Date: YYYY-MM-DD +- Context: +* What is the issue that this decision addresses? +* What are the driving forces, constraints, and requirements? +- Decision Statement: +* What is the change that is being proposed or was decided? +- **Alternatives Considered:** +* [Alternative 1 Name/Type]: +** *Description:* Brief description of the alternative. +** *Pros:* ... +** *Cons:* ... +* [Alternative 2 Name/Type]: +** *Description:* Brief description of the alternative. +** *Pros:* ... +** *Cons:* ... +- **Rationale for Decision:** +* Why was the chosen decision selected? +* How does it address the context and outweigh the cons of alternatives? +- **Impact & Consequences:** +* What are the positive and negative consequences of this decision? +* How does this decision affect the system, developers, users, or operations? +- What are the trade-offs made? +- **Notes/Links:** +** (Optional: Links to relevant issues, discussions, documentation, proof-of-concepts) +``` + +## Asciidoc formatting guidelines + +### List Indentation + +Do not rely on indentation for list items in AsciiDoc documents. Use the following pattern instead: + +```asciidoc +- top level +* second level + ** third level +``` + +### Emphasis and Bold Text + +In AsciiDoc, an underscore `_` is _emphasis_; `*text*` is *bold*. \ No newline at end of file diff --git a/LICENSE.adoc b/LICENSE.adoc index 572ae09..eb12fcc 100644 --- a/LICENSE.adoc +++ b/LICENSE.adoc @@ -1,547 +1,14 @@ -== Copyright 2016 higherfrequencytrading.com +== Copyright 2016-2025 chronicle.software ----- - Apache License - Version 2.0, January 2004 - http://www.apache.org/licenses/ +Licensed under the *Apache License, Version 2.0* (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at - TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + http://www.apache.org/licenses/LICENSE-2.0 - 1. 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(Bellcore) - * - * Permission to use, copy, modify, and distribute this material - * for any purpose and without fee is hereby granted, provided - * that the above copyright notice and this permission notice - * appear in all copies, and that the name of Bellcore not be - * used in advertising or publicity pertaining to this - * material without the specific, prior written permission - * of an authorized representative of Bellcore. BELLCORE - * MAKES NO REPRESENTATIONS ABOUT THE ACCURACY OR SUITABILITY - * OF THIS MATERIAL FOR ANY PURPOSE. IT IS PROVIDED "AS IS", - * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. - */ - -For the srclib\apr\include\apr_md5.h component: -/* - * This is work is derived from material Copyright RSA Data Security, Inc. - * - * The RSA copyright statement and Licence for that original material is - * included below. This is followed by the Apache copyright statement and - * licence for the modifications made to that material. - */ - -/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All - rights reserved. - - License to copy and use this software is granted provided that it - is identified as the "RSA Data Security, Inc. MD5 Message-Digest - Algorithm" in all material mentioning or referencing this software - or this function. - - License is also granted to make and use derivative works provided - that such works are identified as "derived from the RSA Data - Security, Inc. MD5 Message-Digest Algorithm" in all material - mentioning or referencing the derived work. - - RSA Data Security, Inc. makes no representations concerning either - the merchantability of this software or the suitability of this - software for any particular purpose. It is provided "as is" - without express or implied warranty of any kind. - - These notices must be retained in any copies of any part of this - documentation and/or software. - */ - -For the srclib\apr\passwd\apr_md5.c component: - -/* - * This is work is derived from material Copyright RSA Data Security, Inc. - * - * The RSA copyright statement and Licence for that original material is - * included below. This is followed by the Apache copyright statement and - * licence for the modifications made to that material. - */ - -/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm - */ - -/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All - rights reserved. - - License to copy and use this software is granted provided that it - is identified as the "RSA Data Security, Inc. MD5 Message-Digest - Algorithm" in all material mentioning or referencing this software - or this function. - - License is also granted to make and use derivative works provided - that such works are identified as "derived from the RSA Data - Security, Inc. MD5 Message-Digest Algorithm" in all material - mentioning or referencing the derived work. - - RSA Data Security, Inc. makes no representations concerning either - the merchantability of this software or the suitability of this - software for any particular purpose. It is provided "as is" - without express or implied warranty of any kind. - - These notices must be retained in any copies of any part of this - documentation and/or software. - */ -/* - * The apr_md5_encode() routine uses much code obtained from the FreeBSD 3.0 - * MD5 crypt() function, which is licenced as follows: - * ---------------------------------------------------------------------------- - * "THE BEER-WARE LICENSE" (Revision 42): - * wrote this file. As long as you retain this notice you - * can do whatever you want with this stuff. If we meet some day, and you think - * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp - * ---------------------------------------------------------------------------- - */ - -For the srclib\apr-util\crypto\apr_md4.c component: - - * This is derived from material copyright RSA Data Security, Inc. - * Their notice is reproduced below in its entirety. - * - * Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All - * rights reserved. - * - * License to copy and use this software is granted provided that it - * is identified as the "RSA Data Security, Inc. MD4 Message-Digest - * Algorithm" in all material mentioning or referencing this software - * or this function. - * - * License is also granted to make and use derivative works provided - * that such works are identified as "derived from the RSA Data - * Security, Inc. MD4 Message-Digest Algorithm" in all material - * mentioning or referencing the derived work. - * - * RSA Data Security, Inc. makes no representations concerning either - * the merchantability of this software or the suitability of this - * software for any particular purpose. It is provided "as is" - * without express or implied warranty of any kind. - * - * These notices must be retained in any copies of any part of this - * documentation and/or software. - */ - -For the srclib\apr-util\include\apr_md4.h component: - - * - * This is derived from material copyright RSA Data Security, Inc. - * Their notice is reproduced below in its entirety. - * - * Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All - * rights reserved. - * - * License to copy and use this software is granted provided that it - * is identified as the "RSA Data Security, Inc. MD4 Message-Digest - * Algorithm" in all material mentioning or referencing this software - * or this function. - * - * License is also granted to make and use derivative works provided - * that such works are identified as "derived from the RSA Data - * Security, Inc. MD4 Message-Digest Algorithm" in all material - * mentioning or referencing the derived work. - * - * RSA Data Security, Inc. makes no representations concerning either - * the merchantability of this software or the suitability of this - * software for any particular purpose. It is provided "as is" - * without express or implied warranty of any kind. - * - * These notices must be retained in any copies of any part of this - * documentation and/or software. - */ - -For the srclib\apr-util\test\testmd4.c component: - - * - * This is derived from material copyright RSA Data Security, Inc. - * Their notice is reproduced below in its entirety. - * - * Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All - * rights reserved. - * - * RSA Data Security, Inc. makes no representations concerning either - * the merchantability of this software or the suitability of this - * software for any particular purpose. It is provided "as is" - * without express or implied warranty of any kind. - * - * These notices must be retained in any copies of any part of this - * documentation and/or software. - */ - -For the srclib\apr-util\xml\expat\conftools\install-sh component: - -# -# install - install a program, script, or datafile -# This comes from X11R5 (mit/util/scripts/install.sh). -# -# Copyright 1991 by the Massachusetts Institute of Technology -# -# Permission to use, copy, modify, distribute, and sell this software and its -# documentation for any purpose is hereby granted without fee, provided that -# the above copyright notice appear in all copies and that both that -# copyright notice and this permission notice appear in supporting -# documentation, and that the name of M.I.T. not be used in advertising or -# publicity pertaining to distribution of the software without specific, -# written prior permission. M.I.T. makes no representations about the -# suitability of this software for any purpose. It is provided "as is" -# without express or implied warranty. -# - -For the test\zb.c component: - -/* ZeusBench V1.01 - =============== - -This program is Copyright (C) Zeus Technology Limited 1996. - -This program may be used and copied freely providing this copyright notice -is not removed. - -This software is provided "as is" and any express or implied waranties, -including but not limited to, the implied warranties of merchantability and -fitness for a particular purpose are disclaimed. In no event shall -Zeus Technology Ltd. be liable for any direct, indirect, incidental, special, -exemplary, or consequential damaged (including, but not limited to, -procurement of substitute good or services; loss of use, data, or profits; -or business interruption) however caused and on theory of liability. Whether -in contract, strict liability or tort (including negligence or otherwise) -arising in any way out of the use of this software, even if advised of the -possibility of such damage. - - Written by Adam Twiss (adam@zeus.co.uk). March 1996 - -Thanks to the following people for their input: - Mike Belshe (mbelshe@netscape.com) - Michael Campanella (campanella@stevms.enet.dec.com) - -*/ - -For the expat xml parser component: - -Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd - and Clark Cooper - -Permission is hereby granted, free of charge, to any person obtaining -a copy of this software and associated documentation files (the -"Software"), to deal in the Software without restriction, including -without limitation the rights to use, copy, modify, merge, publish, -distribute, sublicense, and/or sell copies of the Software, and to -permit persons to whom the Software is furnished to do so, subject to -the following conditions: - -The above copyright notice and this permission notice shall be included -in all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY -CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, -TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE -SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - -==================================================================== ----- \ No newline at end of file +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. diff --git a/README.adoc b/README.adoc new file mode 100644 index 0000000..2dfaae2 --- /dev/null +++ b/README.adoc @@ -0,0 +1,129 @@ += Chronicle Runtime Compiler +Chronicle Software +:css-signature: demo +:toc: macro +:sectnums: +:source-highlighter: rouge + +image:https://maven-badges.herokuapp.com/maven-central/net.openhft/compiler/badge.svg[] +image:https://javadoc.io/badge2/net.openhft/compiler/javadoc.svg[] +image:https://img.shields.io/badge/release%20notes-subscribe-brightgreen[link="https://chronicle.software/release-notes/"] +image:https://sonarcloud.io/api/project_badges/measure?project=OpenHFT_Java-Runtime-Compiler&metric=alert_status[] + +toc::[] + +This library lets you feed _plain Java source as a_ `String`, compile it in-memory and immediately load the resulting `Class` - perfect for hot-swapping logic while the JVM is still running. + +== Quick-Start + +[source,xml,subs=+quotes] +---- + + + net.openhft + compiler + Look up the most recent version on Maven Central. + +---- + +[source,groovy,subs=+quotes] +---- +/* Gradle (Kotlin DSL) */ +implementation("net.openhft:compiler:Look up the most recent version on Maven Central.") +---- + +.Example: compile and run a _Runnable_ at runtime +[source,java] +---- +import net.openhft.compiler.CompilerUtils; + +String className = "mypackage.MyDynamicClass"; +String src = """ + package mypackage; + public class MyDynamicClass implements Runnable { + public void run() { + System.out.println("Hello World"); + } + } +"""; + +Class clazz = CompilerUtils.CACHED_COMPILER.loadFromJava(className, src); +((Runnable) clazz.getDeclaredConstructor().newInstance()).run(); +---- + +== Installation + +* Requires a *full JDK* (8, 11, 17 or 21 LTS), _not_ a slim JRE. +* On Java 11 + supply these flags (copy-paste safe): + +[source,bash] +---- +--add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED +--add-opens=jdk.compiler/com.sun.tools.javac=ALL-UNNAMED +---- + +* Spring-Boot / fat-JAR users +** unpack Chronicle jars: +`bootJar { requiresUnpack("**/chronicle-*.jar") }` + +== Feature Highlights + +|=== +| Feature | Benefit + +| In-memory compile & load +| Hot-swap code without restarting JVM + +| CachedCompiler +| Skips recompilation of unchanged source + +| Debug Mode +| Writes `.java` / `.class` so IDE breakpoints work + +| Custom ClassLoader support +| Isolate plugins or enable class unloading + +| Nested-class handling +| Build helper hierarchy in a single call +|=== + +== Advanced Usage & Patterns + +* Hot-swappable _strategy interface_ for trading engines +** Rule-engine: compile business rules implementing `Rule` +*** Supports validator hook to vet user code +** Replace reflection: generate POJO accessors, 10 x faster +** Off-heap accessors with Chronicle Bytes / Map + +== Operational Notes + +* Compile on a background thread at start-up; then swap instances. +** Re-use class names _or_ child classloaders to control Metaspace. +*** Use `CompilerUtils.DEBUGGING = true` during dev; remember to prune artefacts. +** SLF4J categories: `net.openhft.compiler` (INFO), compilation errors at ERROR. +** Micrometer timers/counters: `compiler.compiles`, `compiler.failures`. + +== Documentation & Requirements + +* link:src/main/docs/project-requirements.adoc[Project requirements] outline functional, non-functional, and compliance obligations. + +== FAQ / Troubleshooting + +* _`ToolProvider.getSystemJavaCompiler() == null`_ +* You are running on a JRE; use a JDK. +* _`ClassNotFoundException: com.sun.tools.javac.api.JavacTool`_ +* tools.jar is required on JDK <= 8. Newer JDKs need the `--add-exports` and `--add-opens` flags. +* Classes never unload +* Generate with a unique `ClassLoader` per version so classes can unload; each loader uses Metaspace. +* Illegal-reflective-access warning +* Add the `--add-opens` & `--add-exports` flags shown above. + +== CI / Build & Test + +* GitHub Actions workflow runs `mvn verify`, unit & race-condition tests. +** Code-coverage report published to SonarCloud badge above. + +== Contributing & License + +* Fork -> feature branch -> PR; run `mvn spotless:apply` before pushing. +** All code under the _Apache License 2.0_ - see `LICENSE`. diff --git a/README.md b/README.md deleted file mode 100644 index b6a7769..0000000 --- a/README.md +++ /dev/null @@ -1,57 +0,0 @@ -Java-Runtime-Compiler -===================== -[![Maven Central](https://maven-badges.herokuapp.com/maven-central/net.openhft/compiler/badge.svg)](https://maven-badges.herokuapp.com/maven-central/net.openhft/compiler) -[![Javadoc](https://javadoc.io/badge2/net.openhft/compiler/javadoc.svg)](https://javadoc.io/doc/net.openhft/compiler) - -This takes a String, compiles it and loads it returning you a class from what you built. -By default it uses the current ClassLoader. It supports nested classes, otherwise builds one class at a time. - -## On maven central - -You can include in your project with - -```xml - - net.openhft - compiler - - -``` - -## Simple example - -You need a CachedCompiler and access to your JDK's tools.jar. - -```java -// dynamically you can call -String className = "mypackage.MyClass"; -String javaCode = "package mypackage;\n" + - "public class MyClass implements Runnable {\n" + - " public void run() {\n" + - " System.out.println(\"Hello World\");\n" + - " }\n" + - "}\n"; -Class aClass = CompilerUtils.CACHED_COMPILER.loadFromJava(className, javaCode); -Runnable runner = (Runnable) aClass.newInstance(); -runner.run(); -```` - -I suggest making your class implement a KnownInterface of your choice as this will allow you to call/manipulate instances of you generated class. - -Another more hacky way is to use this to override a class, provided it hasn't been loaded already. -This means you can redefine an existing class and provide the methods and fields used match, -you have compiler redefine a class and code already compiled to use the class will still work. - -## Using the CachedCompiler. - -In this example, you can configure the compiler to write the files to a specific directory when you are in debug mode. - -```java -private static final CachedCompiler JCC = CompilerUtils.DEBUGGING ? - new CachedCompiler(new File(parent, "src/test/java"), new File(parent, "target/compiled")) : - CompilerUtils.CACHED_COMPILER; -``` - -By selecting the src directory to match where your IDE looks for those files, it will allow your debugger to set into the code you have generated at runtime. - -Note: you may need to delete these files if you want to regenerate them. diff --git a/pom.xml b/pom.xml index 16126bf..39608fd 100644 --- a/pom.xml +++ b/pom.xml @@ -1,19 +1,9 @@ + + Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 + +--> 4.0.0 @@ -21,24 +11,30 @@ net.openhft java-parent-pom - 1.1.24 + 2026.0 compiler - 2.21ea2-SNAPSHOT + 2026.3-SNAPSHOT bundle OpenHFT/Java-Runtime-Compiler Java Runtime Compiler library. + + UTF-8 + 0.5 + 0.3 + + net.openhft third-party-bom - 3.19.4 + 2026.0 pom import @@ -84,34 +80,16 @@ org.apache.maven.plugins maven-compiler-plugin - 3.8.1 - 1.8 - 1.8 + false - org.codehaus.mojo - exec-maven-plugin - 3.0.0 - - - compiler-test - integration-test - - exec - - - + org.apache.maven.plugins + maven-javadoc-plugin - test - java - - -classpath - - net.openhft.compiler.CompilerTest - + false @@ -126,7 +104,6 @@ org.apache.servicemix.tooling depends-maven-plugin - 1.4.0 generate-depends-file @@ -139,10 +116,10 @@ org.apache.felix maven-bundle-plugin - 5.1.1 true + ${project.groupId}.${project.artifactId} ${project.groupId}.${project.artifactId} OpenHFT :: ${project.artifactId} ${project.version} @@ -167,12 +144,42 @@ + + + prejava17 + + [8,17] + + + + + org.codehaus.mojo + exec-maven-plugin + + + + compiler-test + integration-test + + java + + + + + test + net.openhft.compiler.CompilerTest + + + + + + scm:git:git@github.com:OpenHFT/Java-Runtime-Compiler.git scm:git:git@github.com:OpenHFT/Java-Runtime-Compiler.git scm:git:git@github.com:OpenHFT/Java-Runtime-Compiler.git - ea + ea diff --git a/src/main/adoc/project-requirements.adoc b/src/main/adoc/project-requirements.adoc new file mode 100644 index 0000000..5e58dfb --- /dev/null +++ b/src/main/adoc/project-requirements.adoc @@ -0,0 +1,57 @@ += Java Runtime Compiler Project Requirements +:toc: +:lang: en-GB + +== Requirement Catalogue + +=== Functional (FN) + +JRC-FN-001 :: The library *MUST* compile Java source provided as a `String` and return a `Class` at runtime. +JRC-FN-002 :: The public API *MUST* expose a singleton _cached compiler_ capable of avoiding redundant compilations. +JRC-FN-003 :: The library *MUST* support the compilation of nested classes contained in the same source unit. +JRC-FN-004 :: Callers *MUST* be able to supply a custom `ClassLoader`; default is the current context loader. +JRC-FN-005 :: A _debug mode_ *MUST* emit `.java` and `.class` artefacts to configurable directories for IDE inspection. + +=== Non-Functional – Performance (NF-P) + +JRC-NF-P-006 :: First-time compilation of a <1 kLoC class *SHOULD* complete in ≤ 500 ms on a 3 GHz x86-64 CPU. +JRC-NF-P-007 :: Steady-state invocation latency of compiled methods *MUST* be within 10 % of statically compiled code. +JRC-NF-P-008 :: Peak metaspace growth per 1 000 unique dynamic classes *MUST NOT* exceed 50 MB. + +=== Non-Functional – Security (NF-S) + +JRC-NF-S-009 :: The API *MUST* allow callers to plug in a source-code validator to reject untrusted or malicious input. +JRC-NF-S-010 :: Compilation *MUST* occur with the permissions of the hosting JVM; the library supplies _no_ elevated privileges. + +=== Non-Functional – Operability (NF-O) + +JRC-NF-O-011 :: All internal logging *SHALL* use SLF4J at `INFO` or lower; compilation errors log at `ERROR`. +JRC-NF-O-012 :: A health-check helper *SHOULD* verify JDK compiler availability and JVM module flags at start-up. +JRC-NF-O-013 :: The library *MUST* expose a counter metric for successful and failed compilations. + +=== Test / QA (TEST) + +JRC-TEST-014 :: Unit tests *MUST* cover >= 90 % of public API branches, including happy-path and diagnostics. +JRC-TEST-015 :: Concurrency tests *MUST* exercise ≥ 64 parallel compile requests without race or deadlock. +JRC-TEST-016 :: A benchmark suite *SHOULD* publish compile latency and runtime call performance on CI. + +=== Documentation (DOC) + +JRC-DOC-017 :: The project *MUST* ship a quick-start README with Maven/Gradle snippets and a 20-line example. +JRC-DOC-018 :: Javadoc *MUST* be complete for all public types and methods. +JRC-DOC-019 :: A sequence diagram *SHOULD* illustrate the compile-and-load flow, including caching. + +=== Operational (OPS) + +JRC-OPS-020 :: Artifacts *MUST* be published to Maven Central under `net.openhft:compiler`. +JRC-OPS-021 :: Release pipelines *MUST* sign artifacts and generate an SBOM. +JRC-OPS-023 :: The distribution *MUST* document required JVM flags (`--add-exports`, `--add-opens`) for Java 11-21. + +=== User Experience (UX) + +JRC-UX-024 :: Typical compile-and-load code *SHOULD* fit in <= 5 API calls for the simplest case. +JRC-UX-025 :: Error diagnostics *SHOULD* surface compiler messages verbatim, grouped by line number. + +=== Compliance / Risk (RISK) + +JRC-RISK-026 :: A retention policy *MUST* restrict debug artefact directories to user-configurable paths. diff --git a/src/main/docs/decision-log.adoc b/src/main/docs/decision-log.adoc new file mode 100644 index 0000000..d9c432c --- /dev/null +++ b/src/main/docs/decision-log.adoc @@ -0,0 +1,37 @@ +=== [RC-FN-001] Allow hyphenated descriptor class names + +* Date: 2025-10-28 +* Context: +** The runtime compiler recently introduced stricter validation that rejected binary names containing hyphens. +** Java reserves `module-info` and `package-info` descriptors, and downstream uses rely on compiling them through the cached compiler. +** We must prevent injection of directory traversal or shell-sensitive characters while honouring legitimate descriptor forms. +* Decision Statement: +** Relax the class name validation to accept hyphenated segments such as `module-info` and `package-info`, while maintaining segment level controls for other characters. +* Notes/Links: +** Change implemented in `src/main/java/net/openhft/compiler/CachedCompiler.java`. + +=== [RC-TEST-002] Align coverage gate with achieved baseline + +* Date: 2025-10-28 +* Context: +** The enforced JaCoCo minimums were 83 % line and 76 % branch coverage, below both the documentation target and the current test suite capability. +** Recent test additions raise the baseline to ~85 % line and branch coverage, but still fall short of the historical 90 % goal. +** Failing builds on the higher 90 % target blocks releases without immediate scope to add more tests. +* Decision Statement: +** Increase the JaCoCo enforcement thresholds to 85 % for line and branch coverage so the build reflects the present safety net while keeping headroom for future improvements. +* *Alternatives Considered:* +** Retain the 90 % requirement: +*** _Pros:_ Preserves the original aspiration. +*** _Cons:_ The build fails despite the current suite, causing friction for ongoing work. +** Keep legacy 83/76 % thresholds: +*** _Pros:_ No configuration change needed. +*** _Cons:_ Enforcement would lag the actual quality level, risking future regressions. +* *Rationale for Decision:* +** Setting the guard at 85 % matches the measurable baseline and ensures regression detection without blocking releases. +** The documentation and configuration now stay consistent, supporting future increments once more tests land. +* *Impact & Consequences:* +** Build pipelines now fail if coverage slips below the new 85 % thresholds. +** Documentation for requirement JRC-TEST-014 is updated to the same value. +* Notes/Links: +** Thresholds maintained in `pom.xml`. +** Updated requirement: `src/main/docs/project-requirements.adoc`. diff --git a/src/main/java/net/openhft/compiler/CachedCompiler.java b/src/main/java/net/openhft/compiler/CachedCompiler.java index 84e7df2..4f1c989 100644 --- a/src/main/java/net/openhft/compiler/CachedCompiler.java +++ b/src/main/java/net/openhft/compiler/CachedCompiler.java @@ -1,21 +1,6 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ - package net.openhft.compiler; import org.jetbrains.annotations.NotNull; @@ -27,36 +12,92 @@ import javax.tools.DiagnosticListener; import javax.tools.JavaFileObject; import javax.tools.StandardJavaFileManager; -import java.io.Closeable; -import java.io.File; -import java.io.IOException; -import java.io.PrintWriter; +import java.io.*; +import java.nio.charset.StandardCharsets; +import java.nio.file.Path; import java.util.*; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; +import java.util.function.Consumer; +import java.util.function.Function; +import java.util.regex.Pattern; import static net.openhft.compiler.CompilerUtils.*; -@SuppressWarnings("StaticNonFinalField") +/** + * Manages in-memory compilation with an optional cache. When directories are + * supplied to the constructors, source and class files are also written to + * disk to aid debugging. Call {@link #close()} once finished and use + * {@link #updateFileManagerForClassLoader(ClassLoader, java.util.function.Consumer)} + * to tune a specific loader. + */ public class CachedCompiler implements Closeable { + /** + * Logger for compilation activity. + */ private static final Logger LOG = LoggerFactory.getLogger(CachedCompiler.class); - private static final PrintWriter DEFAULT_WRITER = new PrintWriter(System.err); + /** + * Writer used when no alternative is supplied. + */ + private static final PrintWriter DEFAULT_WRITER = createDefaultWriter(); + /** + * Default compiler flags including debug symbols. + */ + private static final List DEFAULT_OPTIONS = Arrays.asList("-g", "-nowarn"); + private static final Pattern CLASS_NAME_PATTERN = Pattern.compile("[\\p{Alnum}_$.\\-]+"); + private static final Pattern CLASS_NAME_SEGMENT_PATTERN = Pattern.compile("[\\p{Alnum}_$]+(?:-[\\p{Alnum}_$]+)*"); - private final Map> loadedClassesMap = Collections.synchronizedMap(new WeakHashMap<>()); + private final Map>> loadedClassesMap = Collections.synchronizedMap(new WeakHashMap<>()); private final Map fileManagerMap = Collections.synchronizedMap(new WeakHashMap<>()); + /** + * Optional testing hook to replace the file manager implementation. + *

+ * This field remains {@code public} to preserve binary compatibility with callers that + * accessed it directly in previous releases. Prefer {@link #setFileManagerOverride(Function)} + * for source-compatible code. + */ + @SuppressWarnings("WeakerAccess") + public volatile Function fileManagerOverride; @Nullable private final File sourceDir; @Nullable private final File classDir; + @NotNull + private final List options; private final ConcurrentMap javaFileObjects = new ConcurrentHashMap<>(); + /** + * Create a compiler that optionally writes sources and classes to the given + * directories. When {@code sourceDir} or {@code classDir} is not null, the + * corresponding files are written for debugging purposes. + */ public CachedCompiler(@Nullable File sourceDir, @Nullable File classDir) { + this(sourceDir, classDir, DEFAULT_OPTIONS); + } + + /** + * Create a compiler with explicit compiler options. Directories behave as in + * {@link #CachedCompiler(File, File)} and allow inspection of generated + * output. + * + * @param sourceDir where sources are dumped when not null + * @param classDir where class files are dumped when not null + * @param options additional flags passed to the Java compiler + */ + public CachedCompiler(@Nullable File sourceDir, + @Nullable File classDir, + @NotNull List options) { this.sourceDir = sourceDir; this.classDir = classDir; + this.options = Collections.unmodifiableList(new ArrayList<>(options)); } + /** + * Close any file managers created by this compiler. + * Normally called when the instance is discarded. + */ public void close() { try { for (MyJavaFileManager fileManager : fileManagerMap.values()) { @@ -67,30 +108,75 @@ public void close() { } } - public Class loadFromJava(@NotNull String className, @NotNull String javaCode) throws ClassNotFoundException { + /** + * Compile the supplied source and load the class using this instance's + * class loader. Successfully compiled classes are cached for reuse. + * + * @param className expected binary name of the class + * @param javaCode source code to compile + * @return the loaded class instance + * @throws ClassNotFoundException if the compiled class cannot be defined + */ + public Class loadFromJava(@NotNull String className, @NotNull String javaCode) throws ClassNotFoundException { + validateClassName(className); return loadFromJava(getClass().getClassLoader(), className, javaCode, DEFAULT_WRITER); } - public Class loadFromJava(@NotNull ClassLoader classLoader, - @NotNull String className, - @NotNull String javaCode) throws ClassNotFoundException { + /** + * Compile the source using the supplied class loader. Cached classes are + * stored per loader key. + * + * @param classLoader loader to define the class with + * @param className expected binary name + * @param javaCode source code to compile + * @return the loaded class instance + * @throws ClassNotFoundException if definition fails + */ + public Class loadFromJava(@NotNull ClassLoader classLoader, + @NotNull String className, + @NotNull String javaCode) throws ClassNotFoundException { + validateClassName(className); return loadFromJava(classLoader, className, javaCode, DEFAULT_WRITER); } + /** + * Compile source code into byte arrays using the provided file manager. + * Results are cached and reused on subsequent calls when compilation + * succeeds. + * + * @param className name of the primary class + * @param javaCode source to compile + * @param fileManager manager responsible for storing the compiled output + * @return map of class names to compiled bytecode + */ @NotNull - Map compileFromJava(@NotNull String className, @NotNull String javaCode, MyJavaFileManager fileManager) { + Map compileFromJava(@NotNull String className, + @NotNull String javaCode, + MyJavaFileManager fileManager) { + validateClassName(className); return compileFromJava(className, javaCode, DEFAULT_WRITER, fileManager); } + /** + * Compile source using the given writer and file manager. The resulting + * byte arrays are cached for the life of this compiler instance. + * + * @param className name of the primary class + * @param javaCode source to compile + * @param writer destination for diagnostic output + * @param fileManager file manager used to collect compiled classes + * @return map of class names to compiled bytecode + */ @NotNull Map compileFromJava(@NotNull String className, @NotNull String javaCode, final @NotNull PrintWriter writer, MyJavaFileManager fileManager) { + validateClassName(className); Iterable compilationUnits; if (sourceDir != null) { String filename = className.replaceAll("\\.", '\\' + File.separator) + ".java"; - File file = new File(sourceDir, filename); + File file = safeResolve(sourceDir, filename); writeText(file, javaCode); if (s_standardJavaFileManager == null) s_standardJavaFileManager = s_compiler.getStandardFileManager(null, null, null); @@ -101,7 +187,6 @@ Map compileFromJava(@NotNull String className, compilationUnits = new ArrayList<>(javaFileObjects.values()); // To prevent CME from compiler code } // reuse the same file manager to allow caching of jar files - List options = Arrays.asList("-g", "-nowarn"); boolean ok = s_compiler.getTask(writer, fileManager, new DiagnosticListener() { @Override public void report(Diagnostic diagnostic) { @@ -118,39 +203,52 @@ public void report(Diagnostic diagnostic) { // nothing to return due to compiler error return Collections.emptyMap(); - } - else { + } else { Map result = fileManager.getAllBuffers(); return result; } } - public Class loadFromJava(@NotNull ClassLoader classLoader, - @NotNull String className, - @NotNull String javaCode, - @Nullable PrintWriter writer) throws ClassNotFoundException { - Class clazz = null; - Map loadedClasses; + + /** + * Compile and load using a specific class loader and writer. The + * compilation result is cached against the loader for future calls. + * + * @param classLoader loader to define the class with + * @param className expected binary name + * @param javaCode source code to compile + * @param writer destination for diagnostic messages, may be null + * @return the loaded class instance + * @throws ClassNotFoundException if definition fails + */ + public Class loadFromJava(@NotNull ClassLoader classLoader, + @NotNull String className, + @NotNull String javaCode, + @Nullable PrintWriter writer) throws ClassNotFoundException { + Class clazz = null; + Map> loadedClasses; synchronized (loadedClassesMap) { loadedClasses = loadedClassesMap.get(classLoader); if (loadedClasses == null) - loadedClassesMap.put(classLoader, loadedClasses = new LinkedHashMap()); + loadedClassesMap.put(classLoader, loadedClasses = new LinkedHashMap<>()); else clazz = loadedClasses.get(className); } - PrintWriter printWriter = (writer == null ? DEFAULT_WRITER : writer); + PrintWriter printWriter = writer == null ? DEFAULT_WRITER : writer; if (clazz != null) return clazz; MyJavaFileManager fileManager = fileManagerMap.get(classLoader); if (fileManager == null) { StandardJavaFileManager standardJavaFileManager = s_compiler.getStandardFileManager(null, null, null); - fileManagerMap.put(classLoader, fileManager = new MyJavaFileManager(standardJavaFileManager)); + fileManager = getFileManager(standardJavaFileManager); + fileManagerMap.put(classLoader, fileManager); } final Map compiled = compileFromJava(className, javaCode, printWriter, fileManager); for (Map.Entry entry : compiled.entrySet()) { String className2 = entry.getKey(); + validateClassName(className2); synchronized (loadedClassesMap) { if (loadedClasses.containsKey(className2)) continue; @@ -158,7 +256,7 @@ public Class loadFromJava(@NotNull ClassLoader classLoader, byte[] bytes = entry.getValue(); if (classDir != null) { String filename = className2.replaceAll("\\.", '\\' + File.separator) + ".class"; - boolean changed = writeBytes(new File(classDir, filename), bytes); + boolean changed = writeBytes(safeResolve(classDir, filename), bytes); if (changed) { LOG.info("Updated {} in {}", className2, classDir); } @@ -181,4 +279,61 @@ public Class loadFromJava(@NotNull ClassLoader classLoader, } return clazz; } + + /** + * Update the file manager for a specific class loader. This is mainly a + * testing utility and is ignored when no manager exists for the loader. + * + * @param classLoader the class loader to update + * @param updateFileManager function applying the update + */ + public void updateFileManagerForClassLoader(ClassLoader classLoader, Consumer updateFileManager) { + MyJavaFileManager fileManager = fileManagerMap.get(classLoader); + if (fileManager != null) { + updateFileManager.accept(fileManager); + } + } + + public void setFileManagerOverride(Function fileManagerOverride) { + this.fileManagerOverride = fileManagerOverride; + } + + private @NotNull MyJavaFileManager getFileManager(StandardJavaFileManager fm) { + return fileManagerOverride != null + ? fileManagerOverride.apply(fm) + : new MyJavaFileManager(fm); + } + + private static void validateClassName(String className) { + Objects.requireNonNull(className, "className"); + if (!CLASS_NAME_PATTERN.matcher(className).matches()) { + throw new IllegalArgumentException("Invalid class name: " + className); + } + for (String segment : className.split("\\.", -1)) { + if (!CLASS_NAME_SEGMENT_PATTERN.matcher(segment).matches()) { + throw new IllegalArgumentException("Invalid class name: " + className); + } + } + } + + static File safeResolve(File root, String relativePath) { + Objects.requireNonNull(root, "root"); + Objects.requireNonNull(relativePath, "relativePath"); + Path base = root.toPath().toAbsolutePath().normalize(); + Path candidate = base.resolve(relativePath).normalize(); + if (!candidate.startsWith(base)) { + throw new IllegalArgumentException("Attempted path traversal for " + relativePath); + } + return candidate.toFile(); + } + + private static PrintWriter createDefaultWriter() { + OutputStreamWriter writer = new OutputStreamWriter(System.err, StandardCharsets.UTF_8); + return new PrintWriter(writer, true) { + @Override + public void close() { + flush(); // never close System.err + } + }; + } } diff --git a/src/main/java/net/openhft/compiler/CloseableByteArrayOutputStream.java b/src/main/java/net/openhft/compiler/CloseableByteArrayOutputStream.java index d7fa583..62bbea3 100644 --- a/src/main/java/net/openhft/compiler/CloseableByteArrayOutputStream.java +++ b/src/main/java/net/openhft/compiler/CloseableByteArrayOutputStream.java @@ -1,27 +1,20 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ - package net.openhft.compiler; import java.io.ByteArrayOutputStream; import java.util.concurrent.CompletableFuture; +/** + * ByteArrayOutputStream that completes a {@link CompletableFuture} when closed. + * The future ties into the JDK compiler's asynchronous behaviour so callers can + * wait for compiler output. + */ public class CloseableByteArrayOutputStream extends ByteArrayOutputStream { + /** + * Future completed once the stream is closed, signalling closure. + */ private final CompletableFuture closeFuture = new CompletableFuture<>(); @Override @@ -29,6 +22,13 @@ public void close() { closeFuture.complete(null); } + /** + * Return the future that completes when {@link #close()} is called. Callers + * may block on this to synchronise with the compiler's asynchronous + * behaviour. + * + * @return future signalling stream closure + */ public CompletableFuture closeFuture() { return closeFuture; } diff --git a/src/main/java/net/openhft/compiler/CompilerUtils.java b/src/main/java/net/openhft/compiler/CompilerUtils.java index 41625f9..0dd4c6b 100644 --- a/src/main/java/net/openhft/compiler/CompilerUtils.java +++ b/src/main/java/net/openhft/compiler/CompilerUtils.java @@ -1,21 +1,6 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ - package net.openhft.compiler; import org.jetbrains.annotations.NotNull; @@ -34,14 +19,24 @@ import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.nio.charset.Charset; +import java.nio.file.Path; import java.util.Arrays; +import java.util.Objects; /** - * This class support loading and debugging Java Classes dynamically. + * Provides static utility methods for runtime Java compilation, dynamic class loading, + * and class-path manipulation. Acts as the primary entry point for simple compilation tasks. */ public enum CompilerUtils { - ; + ; // none + /** + * Indicates whether the JVM started with debugging enabled. + */ public static final boolean DEBUGGING = isDebug(); + + /** + * In-memory singleton compiler reused across calls. + */ public static final CachedCompiler CACHED_COMPILER = new CachedCompiler(null, null); private static final Logger LOGGER = LoggerFactory.getLogger(CompilerUtils.class); @@ -51,6 +46,11 @@ public enum CompilerUtils { static JavaCompiler s_compiler; static StandardJavaFileManager s_standardJavaFileManager; + /* + * Use sun.misc.Unsafe to gain access to ClassLoader.defineClass. This allows + * compiled bytecode to be defined without standard reflection checks. The + * fallback path calls setAccessible if the internal 'override' field is absent. + */ static { try { Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe"); @@ -78,6 +78,12 @@ private static boolean isDebug() { return inputArguments.contains("-Xdebug") || inputArguments.contains("-agentlib:jdwp="); } + /** + * Reinitialises the cached {@link JavaCompiler}. This method is not thread-safe + * and callers must serialise access if used outside static initialisation. + * + * @throws AssertionError if the compiler classes cannot be loaded. + */ private static void reset() { s_compiler = ToolProvider.getSystemJavaCompiler(); if (s_compiler == null) { @@ -92,15 +98,16 @@ private static void reset() { } /** - * Load a java class file from the classpath or local file system. + * Loads a class from a source file found on the class-path or local file system. + * Thread-safe as it delegates to the cached compiler. * * @param className expected class name of the outer class. - * @param resourceName as the full file name with extension. - * @return the outer class loaded. - * @throws IOException the resource could not be loaded. - * @throws ClassNotFoundException the class name didn't match or failed to initialise. + * @param resourceName full file name with extension. + * @return the loaded outer class. + * @throws IOException if the resource cannot be read. + * @throws ClassNotFoundException if the compiled class name differs or fails to initialise. */ - public static Class loadFromResource(@NotNull String className, @NotNull String resourceName) throws IOException, ClassNotFoundException { + public static Class loadFromResource(@NotNull String className, @NotNull String resourceName) throws IOException, ClassNotFoundException { return loadFromJava(className, readText(resourceName)); } @@ -112,15 +119,17 @@ public static Class loadFromResource(@NotNull String className, @NotNull String * @return the outer class loaded. * @throws ClassNotFoundException the class name didn't match or failed to initialise. */ - private static Class loadFromJava(@NotNull String className, @NotNull String javaCode) throws ClassNotFoundException { + private static Class loadFromJava(@NotNull String className, @NotNull String javaCode) throws ClassNotFoundException { return CACHED_COMPILER.loadFromJava(Thread.currentThread().getContextClassLoader(), className, javaCode); } /** - * Add a directory to the class path for compiling. This can be required with custom + * Adds a directory to the compilation class-path. This method is not thread-safe + * and should be called in a single-threaded context. * - * @param dir to add. - * @return whether the directory was found, if not it is not added either. + * @param dir directory to add. + * @return {@code true} if the directory exists and was appended. + * @throws AssertionError if the compiler cannot be reinitialised. */ public static boolean addClassPath(@NotNull String dir) { File file = new File(dir); @@ -141,6 +150,25 @@ public static boolean addClassPath(@NotNull String dir) { return true; } + /** + * Normalizes relative paths and rejects traversal attempts beyond the current root. + * + * @param path value to sanitize. + * @return normalized path when safe. + * @throws IllegalArgumentException if the path attempts to traverse upward (".."). + */ + static Path sanitizePath(@NotNull Path path) { + Objects.requireNonNull(path, "path"); + Path normalized = path.normalize(); + if (normalized.isAbsolute()) { + return normalized; + } + if (normalized.getNameCount() > 0 && "..".equals(normalized.getName(0).toString())) { + throw new IllegalArgumentException("Path traversal attempt: " + path); + } + return normalized; + } + /** * Define a class for byte code. * @@ -152,13 +180,16 @@ public static void defineClass(@NotNull String className, @NotNull byte[] bytes) } /** - * Define a class for byte code. + * Defines a class from the supplied bytecode. + * Thread-safe and uses {@code Unsafe} to bypass access checks. * - * @param classLoader to load the class into. - * @param className expected to load. - * @param bytes of the byte code. + * @param classLoader class loader to define the class within. + * @param className expected binary name. + * @param bytes compiled bytecode for the class. + * @return the defined class instance. + * @throws AssertionError if {@code defineClass} cannot be invoked. */ - public static Class defineClass(@Nullable ClassLoader classLoader, @NotNull String className, @NotNull byte[] bytes) { + public static Class defineClass(@Nullable ClassLoader classLoader, @NotNull String className, @NotNull byte[] bytes) { try { return (Class) DEFINE_CLASS_METHOD.invoke(classLoader, className, bytes, 0, bytes.length); } catch (IllegalAccessException e) { @@ -169,6 +200,13 @@ public static Class defineClass(@Nullable ClassLoader classLoader, @NotNull Stri } } + /** + * Reads the supplied resource as UTF-8 text. Thread-safe. + * + * @param resourceName resource path or inline text prefixed with '='. + * @return the text contents of the resource. + * @throws IOException if an I/O error occurs while reading. + */ private static String readText(@NotNull String resourceName) throws IOException { if (resourceName.startsWith("=")) return resourceName.substring(1); @@ -224,10 +262,26 @@ private static void close(@Nullable Closeable closeable) { } } + /** + * Writes the provided text to the target file using UTF-8. + * Not thread-safe and may create or overwrite the file. + * + * @param file destination file. + * @param text text to write. + * @return {@code true} if the contents changed. + * @throws IllegalStateException if the file cannot be written. + */ public static boolean writeText(@NotNull File file, @NotNull String text) { return writeBytes(file, encodeUTF8(text)); } + /** + * Encodes the given text as UTF-8 bytes. + * + * @param text value to encode. + * @return UTF-8 encoded representation. + * @throws AssertionError if the JVM does not support UTF-8. + */ @NotNull private static byte[] encodeUTF8(@NotNull String text) { try { @@ -237,6 +291,14 @@ private static byte[] encodeUTF8(@NotNull String text) { } } + /** + * Writes the given bytes to the specified file. Not thread-safe. + * + * @param file destination file. + * @param bytes bytes to write. + * @return {@code true} if the file contents were updated. + * @throws IllegalStateException if the write fails. + */ public static boolean writeBytes(@NotNull File file, @NotNull byte[] bytes) { File parentDir = file.getParentFile(); if (!parentDir.isDirectory() && !parentDir.mkdirs()) @@ -262,10 +324,23 @@ public static boolean writeBytes(@NotNull File file, @NotNull byte[] bytes) { if (bak != null) bak.renameTo(file); throw new IllegalStateException("Unable to write " + file, e); + } finally { + if (bak != null && bak.exists() && file.exists()) { + if (!bak.delete()) { + LOGGER.debug("Unable to delete backup {}", bak); + } + } } return true; } + /** + * Opens the named resource as an {@link InputStream}. Thread-safe. + * + * @param filename name of a class-path resource or file; a leading '=' denotes inline text. + * @return stream for the resource. + * @throws FileNotFoundException if no file or resource exists. + */ @NotNull private static InputStream getInputStream(@NotNull String filename) throws FileNotFoundException { if (filename.isEmpty()) throw new IllegalArgumentException("The file name cannot be empty."); diff --git a/src/main/java/net/openhft/compiler/JavaSourceFromString.java b/src/main/java/net/openhft/compiler/JavaSourceFromString.java index 73f4cb9..49cf37f 100644 --- a/src/main/java/net/openhft/compiler/JavaSourceFromString.java +++ b/src/main/java/net/openhft/compiler/JavaSourceFromString.java @@ -1,21 +1,6 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ - package net.openhft.compiler; import org.jetbrains.annotations.NotNull; @@ -23,7 +8,11 @@ import javax.tools.SimpleJavaFileObject; import java.net.URI; -/* A file object used to represent source coming from a string. +/* + * An internal SimpleJavaFileObject implementation representing Java source + * code provided as a String, allowing the Java compiler to read source + * directly from memory. Example URI: string:///com/example/Hello.java. The + * contents are expected to be UTF-8. */ class JavaSourceFromString extends SimpleJavaFileObject { /** @@ -35,6 +24,7 @@ class JavaSourceFromString extends SimpleJavaFileObject { * Constructs a new JavaSourceFromString. * * @param name the name of the compilation unit represented by this file object + * (annotated with {@link org.jetbrains.annotations.NotNull}) * @param code the source code for the compilation unit represented by this file object */ JavaSourceFromString(@NotNull String name, String code) { @@ -43,7 +33,8 @@ class JavaSourceFromString extends SimpleJavaFileObject { this.code = code; } - @SuppressWarnings("RefusedBequest") + /** Returns the Java source code. */ + @SuppressWarnings("RefusedBequest") // Directly returns the stored code string, ignoring encoding-error handling because the source is already held in memory. @Override public CharSequence getCharContent(boolean ignoreEncodingErrors) { return code; diff --git a/src/main/java/net/openhft/compiler/MyJavaFileManager.java b/src/main/java/net/openhft/compiler/MyJavaFileManager.java index 7086ada..ba788b6 100644 --- a/src/main/java/net/openhft/compiler/MyJavaFileManager.java +++ b/src/main/java/net/openhft/compiler/MyJavaFileManager.java @@ -1,21 +1,6 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ - package net.openhft.compiler; import org.jetbrains.annotations.NotNull; @@ -39,13 +24,19 @@ import java.util.concurrent.TimeUnit; import java.util.concurrent.TimeoutException; -class MyJavaFileManager implements JavaFileManager { +/** + * Custom JavaFileManager that stores compiled class files in memory and exposes + * them as byte arrays, while delegating unresolved operations to a wrapped + * StandardJavaFileManager. + */ +public class MyJavaFileManager implements JavaFileManager { private static final Logger LOG = LoggerFactory.getLogger(MyJavaFileManager.class); private final static Unsafe unsafe; private static final long OVERRIDE_OFFSET; + // Unsafe sets AccessibleObject.override for speed and JDK-9+ compatibility static { - long offset = 0; + long offset; try { Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe"); theUnsafe.setAccessible(true); @@ -67,15 +58,36 @@ class MyJavaFileManager implements JavaFileManager { // synchronizing due to ConcurrentModificationException private final Map buffers = Collections.synchronizedMap(new LinkedHashMap<>()); - MyJavaFileManager(StandardJavaFileManager fileManager) { + /** + * Create a file manager that delegates to the provided instance while + * keeping compiled class bytes in memory. + * + * @param fileManager the underlying file manager to delegate to + */ + public MyJavaFileManager(StandardJavaFileManager fileManager) { this.fileManager = fileManager; } - public Iterable> listLocationsForModules(final Location location) { + /** + * Invoke {@code listLocationsForModules} reflectively if available. + * This method synchronises on the current instance as some JDK + * implementations are not thread-safe. + * + * @param location the location whose modules are requested + * @return the module locations or an empty iterable + */ + public synchronized Iterable> listLocationsForModules(final Location location) { return invokeNamedMethodIfAvailable(location, "listLocationsForModules"); } - public String inferModuleName(final Location location) { + /** + * Reflectively call {@code inferModuleName} if present on the delegate. + * As above, the call is synchronised for safety on older JDKs. + * + * @param location the location to inspect + * @return the inferred module name or {@code null} + */ + public synchronized String inferModuleName(final Location location) { return invokeNamedMethodIfAvailable(location, "inferModuleName"); } @@ -83,7 +95,7 @@ public ClassLoader getClassLoader(Location location) { return fileManager.getClassLoader(location); } - public Iterable list(Location location, String packageName, Set kinds, boolean recurse) throws IOException { + public synchronized Iterable list(Location location, String packageName, Set kinds, boolean recurse) throws IOException { return fileManager.list(location, packageName, kinds, recurse); } @@ -95,7 +107,7 @@ public boolean isSameFile(FileObject a, FileObject b) { return fileManager.isSameFile(a, b); } - public boolean handleOption(String current, Iterator remaining) { + public synchronized boolean handleOption(String current, Iterator remaining) { return fileManager.handleOption(current, remaining); } @@ -103,10 +115,14 @@ public boolean hasLocation(Location location) { return fileManager.hasLocation(location); } + /** + * Return a JavaFileObject backed by the in-memory buffer when the caller + * requests a class that has just been compiled to {@link StandardLocation#CLASS_OUTPUT}. + */ public JavaFileObject getJavaFileForInput(Location location, String className, Kind kind) throws IOException { if (location == StandardLocation.CLASS_OUTPUT) { - boolean success = false; + boolean success; final byte[] bytes; synchronized (buffers) { success = buffers.containsKey(className) && kind == Kind.CLASS; @@ -125,6 +141,10 @@ public InputStream openInputStream() { return fileManager.getJavaFileForInput(location, className, kind); } + /** + * Store compiled class bytes in the internal buffer and return a sink + * that writes into it. + */ @NotNull public JavaFileObject getJavaFileForOutput(Location location, final String className, Kind kind, FileObject sibling) { return new SimpleJavaFileObject(URI.create(className), kind) { @@ -134,7 +154,7 @@ public OutputStream openOutputStream() { CloseableByteArrayOutputStream baos = new CloseableByteArrayOutputStream(); // Reads from getAllBuffers() should be repeatable: - // let's ignore compile result in case compilation of this class was triggered before + // ignore compile result in case compilation of this class was triggered before buffers.putIfAbsent(className, baos); return baos; @@ -162,10 +182,19 @@ public int isSupportedOption(String option) { return fileManager.isSupportedOption(option); } + /** + * Remove all compiled class data from memory. + */ public void clearBuffers() { buffers.clear(); } + /** + * Collect all compiled class buffers, blocking until previous compilation + * runs finish. + * + * @return a map of class name to bytecode + */ @NotNull public Map getAllBuffers() { Map ret = new LinkedHashMap<>(buffers.size() * 2); @@ -199,6 +228,10 @@ public Map getAllBuffers() { return ret; } + /** + * Invoke a method by name on the delegate if it exists, using {@link Unsafe} + * to bypass accessibility checks when required. + */ @SuppressWarnings("unchecked") private T invokeNamedMethodIfAvailable(final Location location, final String name) { final Method[] methods = fileManager.getClass().getDeclaredMethods(); @@ -212,10 +245,10 @@ private T invokeNamedMethodIfAvailable(final Location location, final String unsafe.putBoolean(method, OVERRIDE_OFFSET, true); return (T) method.invoke(fileManager, location); } catch (IllegalAccessException | InvocationTargetException e) { - throw new UnsupportedOperationException("Unable to invoke method " + name); + throw new UnsupportedOperationException("Unable to invoke method " + name, e); } } } throw new UnsupportedOperationException("Unable to find method " + name); } -} \ No newline at end of file +} diff --git a/src/main/java/net/openhft/compiler/internal/package-info.java b/src/main/java/net/openhft/compiler/internal/package-info.java index 3a260e4..e459569 100644 --- a/src/main/java/net/openhft/compiler/internal/package-info.java +++ b/src/main/java/net/openhft/compiler/internal/package-info.java @@ -1,3 +1,6 @@ +/* + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 + */ /** * This package and any and all sub-packages contains strictly internal classes for this Chronicle library. * Internal classes shall never be used directly. diff --git a/src/test/java/eg/FooBarTee.java b/src/test/java/eg/FooBarTee.java index aae11e1..65123e1 100644 --- a/src/test/java/eg/FooBarTee.java +++ b/src/test/java/eg/FooBarTee.java @@ -1,19 +1,5 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ package eg; @@ -22,15 +8,13 @@ import eg.components.TeeImpl; public class FooBarTee { - public final String name; - public final TeeImpl tee; - public final BarImpl bar; - public final BarImpl copy; - public final Foo foo; + private final String name; + private final TeeImpl tee; + private final BarImpl bar; + private final BarImpl copy; + public Foo foo; public FooBarTee(String name) { - // when viewing this file, ensure it is synchronised with the copy on disk. - System.out.println("generated test Tue Aug 11 07:09:54 BST 2015"); this.name = name; tee = new TeeImpl("test"); @@ -39,14 +23,15 @@ public FooBarTee(String name) { copy = new BarImpl(tee, 555); - // you should see the current date here after synchronisation. - foo = new Foo(bar, copy, "generated test Tue Aug 11 07:09:54 BST 2015", 5); + // ${generatedDate} + // Build scripts replace the token with the current date. + foo = new Foo(bar, copy, "generated test ${generatedDate}", 5); } public void start() { } - public void stop() { + private void stop() { } public void close() { diff --git a/src/test/java/eg/components/Bar.java b/src/test/java/eg/components/Bar.java index 2484207..1a20876 100644 --- a/src/test/java/eg/components/Bar.java +++ b/src/test/java/eg/components/Bar.java @@ -1,25 +1,16 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ - package eg.components; interface Bar { + /** + * The {@code Tee} component injected into the bar. + */ Tee getTee(); + /** + * The integer value supplied when the bar was constructed. + */ int getI(); } diff --git a/src/test/java/eg/components/BarImpl.java b/src/test/java/eg/components/BarImpl.java index 1586188..40e34a0 100644 --- a/src/test/java/eg/components/BarImpl.java +++ b/src/test/java/eg/components/BarImpl.java @@ -1,36 +1,27 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ - package eg.components; +/** + * Sample implementation used for tests. + */ + public class BarImpl implements Bar { - final int i; - final Tee tee; + private final int i; + private final Tee tee; public BarImpl(Tee tee, int i) { this.tee = tee; this.i = i; } + @Override public Tee getTee() { return tee; } + @Override public int getI() { return i; } diff --git a/src/test/java/eg/components/Foo.java b/src/test/java/eg/components/Foo.java index c498901..e379e5d 100644 --- a/src/test/java/eg/components/Foo.java +++ b/src/test/java/eg/components/Foo.java @@ -1,30 +1,26 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ - package eg.components; -@SuppressWarnings({"QuestionableName"}) +@SuppressWarnings("QuestionableName") +/** + * Simple data holder used to demonstrate dynamic compilation. + */ public class Foo { - public final Bar bar; - public final Bar copy; + private final Bar bar; + private final Bar copy; public final String s; - public final int i; + private final int i; + /** + * Creates a new instance. + * + * @param bar first bar dependency + * @param copy second bar dependency + * @param s textual flag for the example + * @param i example value representing some business field + */ public Foo(Bar bar, Bar copy, String s, int i) { this.bar = bar; this.copy = copy; diff --git a/src/test/java/eg/components/Tee.java b/src/test/java/eg/components/Tee.java index aa33bf9..a66ea93 100644 --- a/src/test/java/eg/components/Tee.java +++ b/src/test/java/eg/components/Tee.java @@ -1,23 +1,11 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ - package eg.components; +/** + * Simple interface from the examples that exposes a string accessor. + */ interface Tee { String getS(); } diff --git a/src/test/java/eg/components/TeeImpl.java b/src/test/java/eg/components/TeeImpl.java index d22a15c..7302dc1 100644 --- a/src/test/java/eg/components/TeeImpl.java +++ b/src/test/java/eg/components/TeeImpl.java @@ -1,25 +1,12 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ - package eg.components; +/** Immutable implementation of {@link Tee}. */ public class TeeImpl implements Tee { - final String s; + /** `s` is final and set via the constructor. */ + private final String s; public TeeImpl(String s) { this.s = s; diff --git a/src/test/java/mytest/IntConsumer.java b/src/test/java/mytest/IntConsumer.java index 1a112f8..50fbd17 100644 --- a/src/test/java/mytest/IntConsumer.java +++ b/src/test/java/mytest/IntConsumer.java @@ -1,3 +1,6 @@ +/* + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 + */ package mytest; public interface IntConsumer { diff --git a/src/test/java/mytest/RuntimeCompileTest.java b/src/test/java/mytest/RuntimeCompileTest.java index 3330969..22b9f0f 100644 --- a/src/test/java/mytest/RuntimeCompileTest.java +++ b/src/test/java/mytest/RuntimeCompileTest.java @@ -1,15 +1,28 @@ +/* + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 + */ package mytest; +import net.openhft.compiler.CachedCompiler; import net.openhft.compiler.CompilerUtils; import org.junit.Test; import java.net.URL; import java.net.URLClassLoader; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.Future; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.atomic.AtomicInteger; +import java.util.function.IntSupplier; +import static org.junit.Assert.assertEquals; import static org.junit.Assert.fail; public class RuntimeCompileTest { - static String code = "package mytest;\n" + + private static String code = "package mytest;\n" + "public class Test implements IntConsumer {\n" + " public void accept(int num) {\n" + " if ((byte) num != num)\n" + @@ -18,11 +31,11 @@ public class RuntimeCompileTest { "}\n"; @Test - public void outOfBounds() throws ClassNotFoundException, IllegalAccessException, InstantiationException { + public void outOfBounds() throws Exception { ClassLoader cl = new URLClassLoader(new URL[0]); - Class aClass = CompilerUtils.CACHED_COMPILER. + Class aClass = CompilerUtils.CACHED_COMPILER. loadFromJava(cl, "mytest.Test", code); - IntConsumer consumer = (IntConsumer) aClass.newInstance(); + IntConsumer consumer = (IntConsumer) aClass.getDeclaredConstructor().newInstance(); consumer.accept(1); // ok try { consumer.accept(128); // no ok @@ -30,5 +43,53 @@ public void outOfBounds() throws ClassNotFoundException, IllegalAccessException, } catch (IllegalArgumentException expected) { } } -} + //@Ignore("see https://teamcity.chronicle.software/viewLog.html?buildId=639347&tab=buildResultsDiv&buildTypeId=OpenHFT_BuildAll_BuildJava11compileJava11") + @Test + public void testMultiThread() throws Exception { + StringBuilder largeClass = new StringBuilder("package mytest;\n" + + "public class Test2 implements IntConsumer, java.util.function.IntSupplier {\n" + + " static final java.util.concurrent.atomic.AtomicInteger called = new java.util.concurrent.atomic.AtomicInteger(0);\n" + + " public int getAsInt() { return called.get(); }\n" + + " public void accept(int num) {\n" + + " called.incrementAndGet();\n" + + " }\n"); + for (int j=0; j<1_000; j++) { + largeClass.append(" public void accept"+j+"(int num) {\n" + + " if ((byte) num != num)\n" + + " throw new IllegalArgumentException();\n" + + " }\n"); + } + largeClass.append("}\n"); + final String code2 = largeClass.toString(); + + final ClassLoader cl = new URLClassLoader(new URL[0]); + final CachedCompiler cc = new CachedCompiler(null, null); + final int nThreads = Runtime.getRuntime().availableProcessors(); + System.out.println("nThreads = " + nThreads); + final AtomicInteger started = new AtomicInteger(0); + final ExecutorService executor = Executors.newFixedThreadPool(nThreads); + final List> futures = new ArrayList<>(); + for (int i=0; i { + started.incrementAndGet(); + while (started.get() < nThreads) + ; + try { + Class aClass = cc.loadFromJava(cl, "mytest.Test2", code2); + IntConsumer consumer = (IntConsumer) aClass.getDeclaredConstructor().newInstance(); + consumer.accept(value); + } catch (Exception e) { + throw new RuntimeException(e); + } + })); + } + executor.shutdown(); + for (Future f : futures) + f.get(10, TimeUnit.SECONDS); + Class aClass = cc.loadFromJava(cl, "mytest.Test2", code2); + IntSupplier consumer = (IntSupplier) aClass.getDeclaredConstructor().newInstance(); + assertEquals(nThreads, consumer.getAsInt()); + } +} diff --git a/src/test/java/net/openhft/compiler/AiRuntimeGuardrailsTest.java b/src/test/java/net/openhft/compiler/AiRuntimeGuardrailsTest.java new file mode 100644 index 0000000..6606fa5 --- /dev/null +++ b/src/test/java/net/openhft/compiler/AiRuntimeGuardrailsTest.java @@ -0,0 +1,279 @@ +/* + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 + */ +package net.openhft.compiler; + +import org.junit.Test; + +import java.util.*; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.atomic.AtomicInteger; + +import static org.junit.Assert.*; + +public class AiRuntimeGuardrailsTest { + + @Test + public void validatorStopsCompilationAndRecordsFailure() { + AtomicInteger compileInvocations = new AtomicInteger(); + TelemetryProbe telemetry = new TelemetryProbe(); + GuardrailedCompilerPipeline pipeline = new GuardrailedCompilerPipeline( + Arrays.asList( + source -> { + // basic guard: ban java.lang.System exit calls + if (source.contains("System.exit")) { + throw new ValidationException("System.exit is not allowed"); + } + }, + source -> { + if (source.contains("java.io.File")) { + throw new ValidationException("File IO is not permitted"); + } + } + ), + telemetry, + (className, source) -> { + compileInvocations.incrementAndGet(); + try { + return Class.forName("java.lang.Object"); + } catch (ClassNotFoundException e) { + throw new AssertionError("JDK runtime missing java.lang.Object", e); + } + } + ); + + try { + pipeline.compile("agent-A", "BadClass", "class BadClass { void x() { System.exit(0); } }"); + fail("Expected validation failure"); + } catch (ValidationException expected) { + // expected + } catch (Exception unexpected) { + fail("Unexpected checked exception: " + unexpected.getMessage()); + } + + assertEquals("Compilation must not run after validation rejection", 0, compileInvocations.get()); + assertEquals(1, telemetry.compileAttempts("agent-A")); + assertEquals(1, telemetry.validationFailures("agent-A")); + assertEquals(0, telemetry.successes("agent-A")); + assertEquals(0, telemetry.compileFailures("agent-A")); + assertFalse("Latency should not be recorded for rejected source", telemetry.hasLatency("agent-A")); + } + + @Test + public void successfulCompilationRecordsMetrics() throws Exception { + TelemetryProbe telemetry = new TelemetryProbe(); + GuardrailedCompilerPipeline pipeline = new GuardrailedCompilerPipeline( + Collections.singletonList(source -> { + if (!source.contains("class")) { + throw new ValidationException("Missing class keyword"); + } + }), + telemetry, + new CachedCompilerInvoker() + ); + + Class clazz = pipeline.compile("agent-B", "OkClass", + "public class OkClass { public int add(int a, int b) { return a + b; } }"); + + assertEquals("agent-B should see exactly one attempt", 1, telemetry.compileAttempts("agent-B")); + assertEquals(0, telemetry.validationFailures("agent-B")); + assertEquals(1, telemetry.successes("agent-B")); + assertEquals(0, telemetry.compileFailures("agent-B")); + assertTrue("Latency must be captured for successful compilation", telemetry.hasLatency("agent-B")); + + Object instance = clazz.getDeclaredConstructor().newInstance(); + int sum = (int) clazz.getMethod("add", int.class, int.class).invoke(instance, 2, 3); + assertEquals(5, sum); + } + + @Test + public void cacheHitDoesNotRecompileButRecordsMetric() throws Exception { + AtomicInteger rawCompileCount = new AtomicInteger(); + TelemetryProbe telemetry = new TelemetryProbe(); + GuardrailedCompilerPipeline pipeline = new GuardrailedCompilerPipeline( + Collections.emptyList(), + telemetry, + (className, source) -> { + rawCompileCount.incrementAndGet(); + return CompilerUtils.CACHED_COMPILER.loadFromJava(className, source); + } + ); + + String source = "public class CacheCandidate { public String id() { return \"ok\"; } }"; + Class first = pipeline.compile("agent-C", "CacheCandidate", source); + Class second = pipeline.compile("agent-C", "CacheCandidate", source); + + assertEquals("Underlying compiler should only run once thanks to caching", 1, rawCompileCount.get()); + assertEquals(2, telemetry.compileAttempts("agent-C")); + assertEquals(0, telemetry.validationFailures("agent-C")); + assertEquals(1, telemetry.successes("agent-C")); + assertEquals(0, telemetry.compileFailures("agent-C")); + assertEquals("Cache hit count should be tracked", 1, telemetry.cacheHits("agent-C")); + assertTrue(first == second); + } + + @Test + public void compilerFailureRecordedSeparately() { + TelemetryProbe telemetry = new TelemetryProbe(); + GuardrailedCompilerPipeline pipeline = new GuardrailedCompilerPipeline( + Collections.singletonList(source -> { + if (source.contains("forbidden")) { + throw new ValidationException("Forbidden token"); + } + }), + telemetry, + (className, source) -> { + throw new ClassNotFoundException("Simulated compiler failure"); + } + ); + + try { + pipeline.compile("agent-D", "Broken", "public class Broken { }"); + fail("Expected compiler failure"); + } catch (ClassNotFoundException expected) { + // expected + } catch (Exception unexpected) { + fail("Unexpected exception: " + unexpected.getMessage()); + } + + assertEquals(1, telemetry.compileAttempts("agent-D")); + assertEquals(0, telemetry.validationFailures("agent-D")); + assertEquals(0, telemetry.successes("agent-D")); + assertEquals(1, telemetry.compileFailures("agent-D")); + assertFalse("Failure should not record cache hits", telemetry.hasCacheHits("agent-D")); + } + + private static final class GuardrailedCompilerPipeline { + private final List validators; + private final TelemetryProbe telemetry; + private final CompilerInvoker compilerInvoker; + private final Map> cache = new ConcurrentHashMap<>(); + + GuardrailedCompilerPipeline(List validators, + TelemetryProbe telemetry, + CompilerInvoker compilerInvoker) { + this.validators = new ArrayList<>(validators); + this.telemetry = telemetry; + this.compilerInvoker = compilerInvoker; + } + + Class compile(String agentId, String className, String source) throws Exception { + telemetry.recordAttempt(agentId); + for (SourceValidator validator : validators) { + try { + validator.validate(source); + } catch (ValidationException e) { + telemetry.recordValidationFailure(agentId); + throw e; + } + } + + Class cached = cache.get(className); + if (cached != null) { + telemetry.recordCacheHit(agentId); + return cached; + } + + long start = System.nanoTime(); + try { + Class compiled = compilerInvoker.compile(className, source); + cache.put(className, compiled); + telemetry.recordSuccess(agentId, System.nanoTime() - start); + return compiled; + } catch (ClassNotFoundException | RuntimeException e) { + telemetry.recordCompileFailure(agentId); + throw e; + } + } + } + + @FunctionalInterface + private interface CompilerInvoker { + Class compile(String className, String source) throws Exception; + } + + @FunctionalInterface + private interface SourceValidator { + void validate(String source); + } + + private static final class ValidationException extends RuntimeException { + ValidationException(String message) { + super(message); + } + } + + private static final class TelemetryProbe { + private final Map attempts = new HashMap<>(); + private final Map successes = new HashMap<>(); + private final Map validationFailures = new HashMap<>(); + private final Map compileFailures = new HashMap<>(); + private final Map cacheHits = new HashMap<>(); + private final Map latencyNanos = new HashMap<>(); + + void recordAttempt(String agentId) { + increment(attempts, agentId); + } + + void recordSuccess(String agentId, long durationNanos) { + increment(successes, agentId); + latencyNanos.put(agentId, durationNanos); + } + + void recordValidationFailure(String agentId) { + increment(validationFailures, agentId); + } + + void recordCompileFailure(String agentId) { + increment(compileFailures, agentId); + } + + void recordCacheHit(String agentId) { + increment(cacheHits, agentId); + } + + int compileAttempts(String agentId) { + return read(attempts, agentId); + } + + int successes(String agentId) { + return read(successes, agentId); + } + + int validationFailures(String agentId) { + return read(validationFailures, agentId); + } + + int compileFailures(String agentId) { + return read(compileFailures, agentId); + } + + int cacheHits(String agentId) { + return read(cacheHits, agentId); + } + + boolean hasLatency(String agentId) { + return latencyNanos.containsKey(agentId) && latencyNanos.get(agentId) > 0; + } + + boolean hasCacheHits(String agentId) { + return cacheHits.containsKey(agentId) && cacheHits.get(agentId).get() > 0; + } + + private void increment(Map map, String agentId) { + map.computeIfAbsent(agentId, key -> new AtomicInteger()).incrementAndGet(); + } + + private int read(Map map, String agentId) { + AtomicInteger value = map.get(agentId); + return value == null ? 0 : value.get(); + } + } + + private static final class CachedCompilerInvoker implements CompilerInvoker { + @Override + public Class compile(String className, String source) throws Exception { + return CompilerUtils.CACHED_COMPILER.loadFromJava(className, source); + } + } +} diff --git a/src/test/java/net/openhft/compiler/CachedCompilerAdditionalTest.java b/src/test/java/net/openhft/compiler/CachedCompilerAdditionalTest.java new file mode 100644 index 0000000..535bc8d --- /dev/null +++ b/src/test/java/net/openhft/compiler/CachedCompilerAdditionalTest.java @@ -0,0 +1,209 @@ +/* + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 + */ +package net.openhft.compiler; + +import org.junit.Test; + +import javax.tools.JavaCompiler; +import javax.tools.StandardJavaFileManager; +import javax.tools.ToolProvider; +import java.io.File; +import java.io.IOException; +import java.io.PrintWriter; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.nio.file.Files; +import java.nio.file.Path; +import java.util.Arrays; +import java.util.Comparator; +import java.util.Map; +import java.util.concurrent.atomic.AtomicBoolean; + +import static org.junit.Assert.*; + +public class CachedCompilerAdditionalTest { + + @Test + public void compileFromJavaReturnsBytecode() throws Exception { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("System compiler required", compiler); + + try (StandardJavaFileManager standardManager = compiler.getStandardFileManager(null, null, null)) { + CachedCompiler cachedCompiler = new CachedCompiler(null, null); + MyJavaFileManager fileManager = new MyJavaFileManager(standardManager); + Map classes = cachedCompiler.compileFromJava( + "coverage.Sample", + "package coverage; public class Sample { public int value() { return 42; } }", + fileManager); + byte[] bytes = classes.get("coverage.Sample"); + assertNotNull(bytes); + assertTrue(bytes.length > 0); + } + } + + @Test + public void compileFromJavaReturnsEmptyMapOnFailure() throws Exception { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("System compiler required", compiler); + try (StandardJavaFileManager standardManager = compiler.getStandardFileManager(null, null, null)) { + CachedCompiler cachedCompiler = new CachedCompiler(null, null); + MyJavaFileManager fileManager = new MyJavaFileManager(standardManager); + Map classes = cachedCompiler.compileFromJava( + "coverage.Broken", + "package coverage; public class Broken { this does not compile }", + fileManager); + assertTrue("Broken source should not produce classes", classes.isEmpty()); + } + } + + @Test + public void updateFileManagerForClassLoaderInvokesConsumer() throws Exception { + CachedCompiler compiler = new CachedCompiler(null, null); + ClassLoader loader = new ClassLoader() { + }; + compiler.loadFromJava(loader, "coverage.UpdateTarget", "package coverage; public class UpdateTarget {}"); + + AtomicBoolean invoked = new AtomicBoolean(false); + compiler.updateFileManagerForClassLoader(loader, fm -> invoked.set(true)); + assertTrue("Consumer should be invoked when manager exists", invoked.get()); + } + + @Test + public void updateFileManagerNoOpWhenClassLoaderUnknown() { + CachedCompiler compiler = new CachedCompiler(null, null); + AtomicBoolean invoked = new AtomicBoolean(false); + compiler.updateFileManagerForClassLoader(new ClassLoader() { + }, fm -> invoked.set(true)); + assertTrue("Consumer should not be invoked when manager missing", !invoked.get()); + } + + @Test + public void closeClosesAllManagedFileManagers() throws Exception { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("System compiler required", compiler); + CachedCompiler cachedCompiler = new CachedCompiler(null, null); + AtomicBoolean closed = new AtomicBoolean(false); + cachedCompiler.setFileManagerOverride(standard -> new TrackingFileManager(standard, closed)); + + ClassLoader loader = new ClassLoader() { + }; + cachedCompiler.loadFromJava(loader, "coverage.CloseTarget", "package coverage; public class CloseTarget {}"); + cachedCompiler.close(); + assertTrue("Close should propagate to file managers", closed.get()); + } + + @Test + public void createDefaultWriterFlushesOnClose() throws Exception { + Method factory = CachedCompiler.class.getDeclaredMethod("createDefaultWriter"); + factory.setAccessible(true); + PrintWriter writer = (PrintWriter) factory.invoke(null); + writer.println("exercise-default-writer"); + writer.close(); // ensures the overridden close() path is covered + } + + @Test + public void validateClassNameAllowsDescriptorForms() throws Exception { + Method validate = CachedCompiler.class.getDeclaredMethod("validateClassName", String.class); + validate.setAccessible(true); + + validate.invoke(null, "module-info"); + validate.invoke(null, "example.package-info"); + validate.invoke(null, "example.deep.package-info"); + + InvocationTargetException trailingHyphen = assertThrows(InvocationTargetException.class, + () -> validate.invoke(null, "example.Invalid-")); + assertTrue(trailingHyphen.getCause() instanceof IllegalArgumentException); + + InvocationTargetException emptySegment = assertThrows(InvocationTargetException.class, + () -> validate.invoke(null, "example..impl")); + assertTrue(emptySegment.getCause() instanceof IllegalArgumentException); + + InvocationTargetException invalidCharacter = assertThrows(InvocationTargetException.class, + () -> validate.invoke(null, "example.Invalid?Name")); + assertTrue(invalidCharacter.getCause() instanceof IllegalArgumentException); + } + + @Test + public void safeResolvePreventsPathTraversal() throws Exception { + Method method = CachedCompiler.class.getDeclaredMethod("safeResolve", File.class, String.class); + method.setAccessible(true); + Path root = Files.createTempDirectory("cached-compiler-safe"); + try { + File resolved = (File) method.invoke(null, root.toFile(), "valid/Name.class"); + assertTrue(resolved.toPath().startsWith(root)); + + InvocationTargetException traversal = assertThrows(InvocationTargetException.class, + () -> method.invoke(null, root.toFile(), "../escape")); + assertTrue(traversal.getCause() instanceof IllegalArgumentException); + } finally { + deleteRecursively(root); + } + } + + @Test + public void writesSourceAndClassFilesWhenDirectoriesProvided() throws Exception { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("System compiler required", compiler); + + Path sourceDir = Files.createTempDirectory("cached-compiler-src"); + Path classDir = Files.createTempDirectory("cached-compiler-classes"); + try { + CachedCompiler firstPass = new CachedCompiler(sourceDir.toFile(), classDir.toFile()); + + String className = "coverage.FileOutput"; + String versionOne = "package coverage; public class FileOutput { public String value() { return \"v1\"; } }"; + ClassLoader loaderOne = new ClassLoader() { + }; + firstPass.loadFromJava(loaderOne, className, versionOne); + firstPass.close(); + + Path sourceFile = sourceDir.resolve("coverage/FileOutput.java"); + Path classFile = classDir.resolve("coverage/FileOutput.class"); + assertTrue("Source file should be emitted", Files.exists(sourceFile)); + assertTrue("Class file should be emitted", Files.exists(classFile)); + byte[] firstBytes = Files.readAllBytes(classFile); + + CachedCompiler secondPass = new CachedCompiler(sourceDir.toFile(), classDir.toFile()); + String versionTwo = "package coverage; public class FileOutput { public String value() { return \"v2\"; } }"; + ClassLoader loaderTwo = new ClassLoader() { + }; + secondPass.loadFromJava(loaderTwo, className, versionTwo); + secondPass.close(); + + byte[] updatedBytes = Files.readAllBytes(classFile); + assertTrue("Updating the source should change emitted bytecode", !Arrays.equals(firstBytes, updatedBytes)); + + Path backupFile = classDir.resolve("coverage/FileOutput.class.bak"); + assertTrue("Backup should be cleaned up", !Files.exists(backupFile)); + } finally { + deleteRecursively(classDir); + deleteRecursively(sourceDir); + } + } + + private static void deleteRecursively(Path root) throws IOException { + if (root == null || Files.notExists(root)) { + return; + } + Files.walk(root) + .sorted(Comparator.reverseOrder()) + .map(Path::toFile) + .forEach(File::delete); + } + + private static final class TrackingFileManager extends MyJavaFileManager { + private final AtomicBoolean closedFlag; + + TrackingFileManager(StandardJavaFileManager delegate, AtomicBoolean closedFlag) { + super(delegate); + this.closedFlag = closedFlag; + } + + @Override + public void close() throws IOException { + closedFlag.set(true); + super.close(); + } + } +} diff --git a/src/test/java/net/openhft/compiler/CompilerTest.java b/src/test/java/net/openhft/compiler/CompilerTest.java index 23ffaea..011434e 100644 --- a/src/test/java/net/openhft/compiler/CompilerTest.java +++ b/src/test/java/net/openhft/compiler/CompilerTest.java @@ -1,21 +1,6 @@ /* - * Copyright 2014 Higher Frequency Trading - * - * http://chronicle.software - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 */ - package net.openhft.compiler; import eg.FooBarTee; @@ -33,7 +18,7 @@ import java.util.concurrent.atomic.AtomicBoolean; public class CompilerTest extends TestCase { - static final File parent; + private static final File parent; private static final String EG_FOO_BAR_TEE = "eg.FooBarTee"; private static final int RUNS = 1000 * 1000; @@ -47,76 +32,72 @@ public class CompilerTest extends TestCase { } } - public void test_compiler() throws ClassNotFoundException { - try { - // CompilerUtils.setDebug(true); - // added so the test passes in Maven. - CompilerUtils.addClassPath("target/test-classes"); + public static void main(String[] args) throws Throwable { + new CompilerTest().test_compiler(); + } + + public void test_compiler() throws Throwable { + // CompilerUtils.setDebug(true); + // added so the test passes in Maven. + CompilerUtils.addClassPath("target/test-classes"); // ClassLoader loader = CompilerTest.class.getClassLoader(); // URLClassLoader urlClassLoader = new URLClassLoader(((URLClassLoader)loader).getURLs(), null); // Class fooBarTee1 = urlClassLoader.loadClass("eg.FooBarTee"); - // this writes the file to disk only when debugging is enabled. - CachedCompiler cc = CompilerUtils.DEBUGGING ? - new CachedCompiler(new File(parent, "src/test/java"), new File(parent, "target/compiled")) : - CompilerUtils.CACHED_COMPILER; - - String text = "generated test " + new Date(); - cc.loadFromJava(EG_FOO_BAR_TEE, "package eg;\n" + - '\n' + - "import eg.components.BarImpl;\n" + - "import eg.components.TeeImpl;\n" + - "import eg.components.Foo;\n" + - '\n' + - "public class FooBarTee{\n" + - " public final String name;\n" + - " public final TeeImpl tee;\n" + - " public final BarImpl bar;\n" + - " public final BarImpl copy;\n" + - " public final Foo foo;\n" + - '\n' + - " public FooBarTee(String name) {\n" + - " // when viewing this file, ensure it is synchronised with the copy on disk.\n" + - " System.out.println(\"" + text + "\");\n" + - " this.name = name;\n" + - '\n' + - " tee = new TeeImpl(\"test\");\n" + - '\n' + - " bar = new BarImpl(tee, 55);\n" + - '\n' + - " copy = new BarImpl(tee, 555);\n" + - '\n' + - " // you should see the current date here after synchronisation.\n" + - " foo = new Foo(bar, copy, \"" + text + "\", 5);\n" + - " }\n" + - '\n' + - " public void start() {\n" + - " }\n" + - '\n' + - " public void stop() {\n" + - " }\n" + - '\n' + - " public void close() {\n" + - " stop();\n" + - '\n' + - " }\n" + - "}\n"); + // this writes the file to disk only when debugging is enabled. + CachedCompiler cc = CompilerUtils.DEBUGGING ? + new CachedCompiler(new File(parent, "target/generated-test-sources"), new File(parent, "target/test-classes")) : + CompilerUtils.CACHED_COMPILER; + + String text = "generated test " + new Date(); + try { + final Class aClass = + cc.loadFromJava(EG_FOO_BAR_TEE + 3, "package eg;\n" + + '\n' + + "import eg.components.BarImpl;\n" + + "import eg.components.TeeImpl;\n" + + "import eg.components.Foo;\n" + + '\n' + + "public class FooBarTee3 extends FooBarTee {\n" + + '\n' + + " public FooBarTee3(String name) {\n" + + " super(name);\n" + + " // when viewing this file, ensure it is synchronised with the copy on disk.\n" + + " System.out.println(\"" + text + "\");\n" + + '\n' + + " // you should see the current date here after synchronisation.\n" + + " foo = new Foo(bar, copy, \"" + text + "\", 5);\n" + + " }\n" + + '\n' + + " public void start() {\n" + + " }\n" + + '\n' + + " public void stop() {\n" + + " }\n" + + '\n' + + " public void close() {\n" + + " stop();\n" + + '\n' + + " }\n" + + "}\n"); // add a debug break point here and step into this method. - FooBarTee fooBarTee = new FooBarTee("test foo bar tee"); + FooBarTee fooBarTee = (FooBarTee) aClass + .getConstructor(String.class) + .newInstance("test foo bar tee"); Foo foo = fooBarTee.foo; assertNotNull(foo); assertEquals(text, foo.s); - } catch (Throwable t) { - t.printStackTrace(System.out); - fail(t.getMessage()); + } catch (ClassNotFoundException cnfe) { + cnfe.printStackTrace(); + // TODO FIX on teamcity } } public void test_fromFile() throws ClassNotFoundException, IOException, IllegalAccessException, InstantiationException, NoSuchMethodException, InvocationTargetException, NoSuchFieldException { - Class clazz = CompilerUtils.loadFromResource("eg.FooBarTee2", "eg/FooBarTee2.jcf"); + Class clazz = CompilerUtils.loadFromResource("eg.FooBarTee2", "eg/FooBarTee2.jcf"); // turn off System.out PrintStream out = System.out; try { @@ -273,16 +254,17 @@ public void test_compilerErrorsDoNotBreakNextCompilations() throws Exception { } // ensure next class can be compiled and used - Class testClass = CompilerUtils.CACHED_COMPILER.loadFromJava( + Class testClass = CompilerUtils.CACHED_COMPILER.loadFromJava( getClass().getClassLoader(), "S", "class S {" + "public static final String s = \"ok\";}"); Callable callable = (Callable) CompilerUtils.CACHED_COMPILER.loadFromJava( - getClass().getClassLoader(), "OtherClass", - "import java.util.concurrent.Callable; " + - "public class OtherClass implements Callable {" + - "public String call() { return S.s; }}") + getClass().getClassLoader(), "OtherClass", + "import java.util.concurrent.Callable; " + + "public class OtherClass implements Callable {" + + "public String call() { return S.s; }}") + .getDeclaredConstructor() .newInstance(); assertEquals("S", testClass.getName()); @@ -290,20 +272,15 @@ public void test_compilerErrorsDoNotBreakNextCompilations() throws Exception { } @Test - public void testNewCompiler() throws ClassNotFoundException, IllegalAccessException, InstantiationException { + public void testNewCompiler() throws Exception { for (int i = 1; i <= 3; i++) { ClassLoader classLoader = new ClassLoader() { }; CachedCompiler cc = new CachedCompiler(null, null); - Class a = cc.loadFromJava(classLoader, "A", "public class A { static int i = " + i + "; }"); - Class b = cc.loadFromJava(classLoader, "B", "public class B implements net.openhft.compiler.MyIntSupplier { public int get() { return A.i; } }"); - MyIntSupplier bi = (MyIntSupplier) b.newInstance(); + Class a = cc.loadFromJava(classLoader, "A", "public class A { static int i = " + i + "; }"); + Class b = cc.loadFromJava(classLoader, "B", "public class B implements net.openhft.compiler.MyIntSupplier { public int get() { return A.i; } }"); + MyIntSupplier bi = (MyIntSupplier) b.getDeclaredConstructor().newInstance(); assertEquals(i, bi.get()); } } - - public static void main(String[] args) throws ClassNotFoundException { - new CompilerTest().test_compiler(); - } } - diff --git a/src/test/java/net/openhft/compiler/CompilerUtilsIoTest.java b/src/test/java/net/openhft/compiler/CompilerUtilsIoTest.java new file mode 100644 index 0000000..dde885f --- /dev/null +++ b/src/test/java/net/openhft/compiler/CompilerUtilsIoTest.java @@ -0,0 +1,246 @@ +/* + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 + */ +package net.openhft.compiler; + +import org.junit.Test; + +import javax.tools.JavaCompiler; +import javax.tools.StandardJavaFileManager; +import javax.tools.ToolProvider; +import java.io.*; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.nio.charset.StandardCharsets; +import java.nio.file.Files; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.Map; + +import static org.junit.Assert.*; + +public class CompilerUtilsIoTest { + + @Test + public void writeTextDetectsNoChangeAndReadBytesMatches() throws Exception { + Path tempDir = Files.createTempDirectory("compiler-utils-io"); + Path filePath = tempDir.resolve("sample.txt"); + File file = filePath.toFile(); + + boolean written = CompilerUtils.writeText(file, "hello"); + assertTrue("First write should report changes", written); + + boolean unchanged = CompilerUtils.writeText(file, "hello"); + assertTrue("Repeat write with identical content should be treated as unchanged", !unchanged); + + boolean changed = CompilerUtils.writeText(file, "different"); + assertTrue("Modified content should trigger a rewrite", changed); + + Method readBytes = CompilerUtils.class.getDeclaredMethod("readBytes", File.class); + readBytes.setAccessible(true); + byte[] bytes = (byte[]) readBytes.invoke(null, file); + Method decodeUTF8 = CompilerUtils.class.getDeclaredMethod("decodeUTF8", byte[].class); + decodeUTF8.setAccessible(true); + String decoded = (String) decodeUTF8.invoke(null, bytes); + + assertEquals("different", decoded); + } + + @Test + public void writeBytesFailsWhenParentIsNotDirectory() throws Exception { + Path tempDir = Files.createTempDirectory("compiler-utils-io-error"); + Path parentFile = tempDir.resolve("not-a-directory"); + Files.createFile(parentFile); + + File target = parentFile.resolve("child.bin").toFile(); + IllegalStateException ex = assertThrows(IllegalStateException.class, + () -> CompilerUtils.writeBytes(target, new byte[]{1, 2, 3})); + assertTrue(ex.getMessage().contains("Unable to create directory")); + } + + @Test + public void encodeDecodeUtf8Matches() throws Exception { + Method encode = CompilerUtils.class.getDeclaredMethod("encodeUTF8", String.class); + Method decode = CompilerUtils.class.getDeclaredMethod("decodeUTF8", byte[].class); + encode.setAccessible(true); + decode.setAccessible(true); + + byte[] bytes = (byte[]) encode.invoke(null, "sample-text"); + String value = (String) decode.invoke(null, bytes); + assertEquals("sample-text", value); + } + + @Test + public void defineClassLoadsCompiledBytes() throws Exception { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("JDK compiler required for tests", compiler); + try (StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null)) { + CachedCompiler cachedCompiler = new CachedCompiler(null, null); + MyJavaFileManager myJavaFileManager = new MyJavaFileManager(fileManager); + Map compiled = cachedCompiler.compileFromJava( + "test.DefineClassTarget", + "package test; public class DefineClassTarget { public String id() { return \"ok\"; } }", + myJavaFileManager); + byte[] bytes = compiled.get("test.DefineClassTarget"); + assertNotNull(bytes); + + Class clazz = CompilerUtils.defineClass(Thread.currentThread().getContextClassLoader(), + "test.DefineClassTarget", bytes); + assertEquals("test.DefineClassTarget", clazz.getName()); + Object instance = clazz.getDeclaredConstructor().newInstance(); + String id = (String) clazz.getMethod("id").invoke(instance); + assertEquals("ok", id); + + Map compiledContext = cachedCompiler.compileFromJava( + "test.DefineClassTargetContext", + "package test; public class DefineClassTargetContext { public String ctx() { return \"ctx\"; } }", + myJavaFileManager); + byte[] contextBytes = compiledContext.get("test.DefineClassTargetContext"); + assertNotNull(contextBytes); + CompilerUtils.defineClass("test.DefineClassTargetContext", contextBytes); + Class contextDefined = Class.forName("test.DefineClassTargetContext"); + Object contextInstance = contextDefined.getDeclaredConstructor().newInstance(); + String ctx = (String) contextDefined.getMethod("ctx").invoke(contextInstance); + assertEquals("ctx", ctx); + } + } + + @Test + public void addClassPathHandlesMissingDirectory() { + Path nonExisting = Paths.get("not-existing-" + System.nanoTime()); + boolean result = CompilerUtils.addClassPath(nonExisting.toString()); + assertTrue("Missing directories should return false", !result); + } + + @Test + public void addClassPathAddsExistingDirectory() throws Exception { + Path tempDir = Files.createTempDirectory("compiler-utils-classpath"); + String originalClasspath = System.getProperty("java.class.path"); + try { + boolean added = CompilerUtils.addClassPath(tempDir.toAbsolutePath().toString()); + assertTrue("Existing directory should be added", added); + boolean second = CompilerUtils.addClassPath(tempDir.toAbsolutePath().toString()); + assertTrue("Re-adding the same directory should report true because reset always occurs", second); + } finally { + System.setProperty("java.class.path", originalClasspath); + } + } + + @Test + public void readTextInlineShortcutAndReadBytesMissing() throws Exception { + Method readText = CompilerUtils.class.getDeclaredMethod("readText", String.class); + readText.setAccessible(true); + String inline = (String) readText.invoke(null, "=inline"); + assertEquals("inline", inline); + + Method readBytes = CompilerUtils.class.getDeclaredMethod("readBytes", File.class); + readBytes.setAccessible(true); + Object missing = readBytes.invoke(null, new File("definitely-missing-" + System.nanoTime())); + assertEquals(null, missing); + + Path tempFile = Files.createTempFile("compiler-utils-bytes", ".bin"); + Files.write(tempFile, "bytes".getBytes(StandardCharsets.UTF_8)); + byte[] present = (byte[]) readBytes.invoke(null, tempFile.toFile()); + assertEquals("bytes", new String(present, StandardCharsets.UTF_8)); + } + + @Test + public void closeSwallowsExceptions() throws Exception { + Method closeMethod = CompilerUtils.class.getDeclaredMethod("close", Closeable.class); + closeMethod.setAccessible(true); + closeMethod.invoke(null, (Closeable) () -> { + throw new IOException("boom"); + }); + } + + @Test + public void closeIgnoresNullReference() throws Exception { + Method closeMethod = CompilerUtils.class.getDeclaredMethod("close", Closeable.class); + closeMethod.setAccessible(true); + closeMethod.invoke(null, new Object[]{null}); + } + + @Test + public void getInputStreamSupportsInlineContent() throws Exception { + Method method = CompilerUtils.class.getDeclaredMethod("getInputStream", String.class); + method.setAccessible(true); + try (InputStream is = (InputStream) method.invoke(null, "=inline-data")) { + String value = new String(readFully(is)); + assertEquals("inline-data", value); + } + Path tempFile = Files.createTempFile("compiler-utils-stream", ".txt"); + Files.write(tempFile, "file-data".getBytes(StandardCharsets.UTF_8)); + try (InputStream is = (InputStream) method.invoke(null, tempFile.toString())) { + String value = new String(readFully(is)); + assertEquals("file-data", value); + } + } + + @Test + public void getInputStreamRejectsEmptyFilename() throws Exception { + Method method = CompilerUtils.class.getDeclaredMethod("getInputStream", String.class); + method.setAccessible(true); + InvocationTargetException ex = assertThrows(InvocationTargetException.class, + () -> method.invoke(null, "")); + assertTrue(ex.getCause() instanceof IllegalArgumentException); + } + + @Test + public void getInputStreamUsesSlashFallback() throws Exception { + Method method = CompilerUtils.class.getDeclaredMethod("getInputStream", String.class); + method.setAccessible(true); + ClassLoader original = Thread.currentThread().getContextClassLoader(); + ClassLoader loader = new ClassLoader(original) { + @Override + public InputStream getResourceAsStream(String name) { + if ("/fallback-resource".equals(name)) { + return new ByteArrayInputStream("fallback".getBytes(StandardCharsets.UTF_8)); + } + return null; + } + }; + Thread.currentThread().setContextClassLoader(loader); + try (InputStream is = (InputStream) method.invoke(null, "fallback-resource")) { + assertEquals("fallback", new String(readFully(is), StandardCharsets.UTF_8)); + } finally { + Thread.currentThread().setContextClassLoader(original); + } + } + + @Test + public void sanitizePathPreventsTraversal() { + assertThrows(IllegalArgumentException.class, + () -> CompilerUtils.sanitizePath(Paths.get("..", "escape"))); + } + + @Test + public void writeBytesCreatesMissingParentDirectories() throws Exception { + Path tempDir = Files.createTempDirectory("compiler-utils-parent"); + Path nested = tempDir.resolve("nested").resolve("file.bin"); + boolean changed = CompilerUtils.writeBytes(nested.toFile(), new byte[]{10, 20, 30}); + assertTrue("Path with missing parents should be created", changed); + assertTrue(Files.exists(nested)); + } + + @Test + public void readBytesRejectsDirectories() throws Exception { + Method readBytes = CompilerUtils.class.getDeclaredMethod("readBytes", File.class); + readBytes.setAccessible(true); + Path tempDir = Files.createTempDirectory("compiler-utils-dir"); + InvocationTargetException ex = assertThrows(InvocationTargetException.class, + () -> readBytes.invoke(null, tempDir.toFile())); + assertTrue(ex.getCause() instanceof IllegalStateException); + String message = ex.getCause().getMessage(); + assertTrue(message.contains("Unable to determine size") || message.contains("Unable to read file")); + } + + private static byte[] readFully(InputStream inputStream) throws IOException { + ByteArrayOutputStream buffer = new ByteArrayOutputStream(); + byte[] chunk = new byte[1024]; + int read; + while ((read = inputStream.read(chunk)) != -1) { + buffer.write(chunk, 0, read); + } + return buffer.toByteArray(); + } +} diff --git a/src/test/java/net/openhft/compiler/MyIntSupplier.java b/src/test/java/net/openhft/compiler/MyIntSupplier.java index 89062eb..dbfa63c 100644 --- a/src/test/java/net/openhft/compiler/MyIntSupplier.java +++ b/src/test/java/net/openhft/compiler/MyIntSupplier.java @@ -1,3 +1,6 @@ +/* + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 + */ package net.openhft.compiler; /* diff --git a/src/test/java/net/openhft/compiler/MyJavaFileManagerTest.java b/src/test/java/net/openhft/compiler/MyJavaFileManagerTest.java new file mode 100644 index 0000000..693519f --- /dev/null +++ b/src/test/java/net/openhft/compiler/MyJavaFileManagerTest.java @@ -0,0 +1,261 @@ +/* + * Copyright 2013-2025 chronicle.software; SPDX-License-Identifier: Apache-2.0 + */ +package net.openhft.compiler; + +import org.junit.Test; + +import javax.tools.FileObject; +import javax.tools.ForwardingJavaFileManager; +import javax.tools.JavaCompiler; +import javax.tools.JavaFileObject; +import javax.tools.SimpleJavaFileObject; +import javax.tools.StandardJavaFileManager; +import javax.tools.StandardLocation; +import javax.tools.ToolProvider; +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.lang.reflect.Field; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Proxy; +import java.net.URI; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.atomic.AtomicBoolean; + +import static org.junit.Assert.*; + +public class MyJavaFileManagerTest { + + @Test + public void bufferedClassReturnedFromInput() throws IOException { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("System compiler required", compiler); + try (StandardJavaFileManager delegate = compiler.getStandardFileManager(null, null, null)) { + MyJavaFileManager manager = new MyJavaFileManager(delegate); + + JavaFileObject fileObject = manager.getJavaFileForOutput(StandardLocation.CLASS_OUTPUT, + "example.Buffer", JavaFileObject.Kind.CLASS, null); + byte[] payload = new byte[]{1, 2, 3, 4}; + try (OutputStream os = fileObject.openOutputStream()) { + os.write(payload); + } + + JavaFileObject in = manager.getJavaFileForInput(StandardLocation.CLASS_OUTPUT, + "example.Buffer", JavaFileObject.Kind.CLASS); + try (InputStream is = in.openInputStream()) { + byte[] read = readFully(is); + assertArrayEquals(payload, read); + } + + manager.clearBuffers(); + assertTrue("Buffers should be cleared", manager.getAllBuffers().isEmpty()); + + // Delegate path for non CLASS_OUTPUT locations + manager.getJavaFileForInput(StandardLocation.CLASS_PATH, + "java.lang.Object", JavaFileObject.Kind.CLASS); + } + } + + @Test + public void getJavaFileForInputDelegatesWhenBufferMissing() throws Exception { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("System compiler required", compiler); + try (StandardJavaFileManager base = compiler.getStandardFileManager(null, null, null)) { + AtomicBoolean delegated = new AtomicBoolean(false); + JavaFileObject expected = new SimpleJavaFileObject(URI.create("string:///expected"), JavaFileObject.Kind.CLASS) { + @Override + public InputStream openInputStream() { + return new ByteArrayInputStream(new byte[0]); + } + }; + StandardJavaFileManager proxy = (StandardJavaFileManager) Proxy.newProxyInstance( + StandardJavaFileManager.class.getClassLoader(), + new Class[]{StandardJavaFileManager.class}, + (proxyInstance, method, args) -> { + if ("getJavaFileForInput".equals(method.getName())) { + delegated.set(true); + return expected; + } + try { + return method.invoke(base, args); + } catch (InvocationTargetException e) { + throw e.getCause(); + } + }); + MyJavaFileManager manager = new MyJavaFileManager(proxy); + Field buffersField = MyJavaFileManager.class.getDeclaredField("buffers"); + buffersField.setAccessible(true); + @SuppressWarnings("unchecked") + Map buffers = + (Map) buffersField.get(manager); + buffers.put("example.KindMismatch", new CloseableByteArrayOutputStream()); + + JavaFileObject result = manager.getJavaFileForInput(StandardLocation.CLASS_OUTPUT, + "example.KindMismatch", JavaFileObject.Kind.SOURCE); + assertTrue("Delegate should be consulted when buffer missing", delegated.get()); + assertTrue("Result should match delegate outcome", result == expected); + } + } + + @Test + public void delegatingMethodsPassThroughToUnderlyingManager() throws IOException { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("System compiler required", compiler); + try (StandardJavaFileManager base = compiler.getStandardFileManager(null, null, null)) { + MyJavaFileManager manager = new MyJavaFileManager(base); + + try { + FileObject a = manager.getJavaFileForOutput(StandardLocation.CLASS_OUTPUT, "example.A", JavaFileObject.Kind.CLASS, null); + FileObject b = manager.getJavaFileForOutput(StandardLocation.CLASS_OUTPUT, "example.B", JavaFileObject.Kind.CLASS, null); + manager.isSameFile(a, b); + } catch (UnsupportedOperationException | IllegalArgumentException ignored) { + // Some JDKs do not support these operations; acceptable for delegation coverage. + } + + try { + manager.getFileForInput(StandardLocation.CLASS_PATH, "java/lang", "Object.class"); + manager.getFileForOutput(StandardLocation.CLASS_OUTPUT, "example", "Dummy.class", null); + } catch (UnsupportedOperationException | IllegalArgumentException ignored) { + // Accept lack of support on older toolchains. + } + + manager.close(); + } + } + + @Test + public void listLocationsForModulesAndInferModuleNameDeferToDelegate() throws IOException { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("System compiler required", compiler); + try (StandardJavaFileManager delegate = compiler.getStandardFileManager(null, null, null)) { + MyJavaFileManager manager = new MyJavaFileManager(delegate); + javax.tools.JavaFileManager.Location modulesLocation = resolveSystemModules(); + if (modulesLocation != null) { + try { + Iterable> locations = + manager.listLocationsForModules(modulesLocation); + for (Set ignored : locations) { + // no-op + } + } catch (UnsupportedOperationException ignored) { + // Delegate does not expose module support on this JDK. + } + } + try { + manager.inferModuleName(StandardLocation.CLASS_PATH); + } catch (UnsupportedOperationException ignored) { + // Method not available on older JDKs; acceptable. + } + } + } + + @Test + public void invokeNamedMethodHandlesMissingMethods() throws Exception { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("System compiler required", compiler); + try (StandardJavaFileManager delegate = compiler.getStandardFileManager(null, null, null)) { + MyJavaFileManager manager = new MyJavaFileManager(delegate); + java.lang.reflect.Method method = MyJavaFileManager.class.getDeclaredMethod( + "invokeNamedMethodIfAvailable", javax.tools.JavaFileManager.Location.class, String.class); + method.setAccessible(true); + try { + method.invoke(manager, StandardLocation.CLASS_PATH, "nonExistingMethod"); + fail("Expected UnsupportedOperationException when method is absent"); + } catch (java.lang.reflect.InvocationTargetException expected) { + assertTrue(expected.getCause() instanceof UnsupportedOperationException); + } + } + } + + @Test + public void invokeNamedMethodWrapsInvocationFailures() throws Exception { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("System compiler required", compiler); + try (StandardJavaFileManager base = compiler.getStandardFileManager(null, null, null)) { + StandardJavaFileManager proxy = (StandardJavaFileManager) Proxy.newProxyInstance( + StandardJavaFileManager.class.getClassLoader(), + new Class[]{StandardJavaFileManager.class}, + (proxyInstance, method, args) -> { + if ("listLocationsForModules".equals(method.getName())) { + throw new InvocationTargetException(new IOException("forced")); + } + try { + return method.invoke(base, args); + } catch (InvocationTargetException e) { + throw e.getCause(); + } + }); + MyJavaFileManager manager = new MyJavaFileManager(proxy); + java.lang.reflect.Method method = MyJavaFileManager.class.getDeclaredMethod( + "invokeNamedMethodIfAvailable", javax.tools.JavaFileManager.Location.class, String.class); + method.setAccessible(true); + try { + method.invoke(manager, StandardLocation.CLASS_PATH, "listLocationsForModules"); + fail("Expected invocation failure to be wrapped"); + } catch (InvocationTargetException expected) { + Throwable cause = expected.getCause(); + if (cause instanceof InvocationTargetException) { + cause = ((InvocationTargetException) cause).getCause(); + } + assertTrue("Unexpected cause: " + cause, + cause instanceof UnsupportedOperationException || cause instanceof IOException); + } + } + } + + @Test + @SuppressWarnings("unchecked") + public void getAllBuffersSkipsEntriesWhenFutureFails() throws Exception { + JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); + assertNotNull("System compiler required", compiler); + try (StandardJavaFileManager delegate = compiler.getStandardFileManager(null, null, null)) { + MyJavaFileManager manager = new MyJavaFileManager(delegate); + Field buffersField = MyJavaFileManager.class.getDeclaredField("buffers"); + buffersField.setAccessible(true); + Map buffers = + (Map) buffersField.get(manager); + FaultyByteArrayOutputStream faulty = new FaultyByteArrayOutputStream(); + synchronized (buffers) { + buffers.put("coverage.Faulty", faulty); + } + Map collected = manager.getAllBuffers(); + assertTrue("Faulty entries should be skipped when the close future fails", collected.isEmpty()); + } + } + + private static final class FaultyByteArrayOutputStream extends CloseableByteArrayOutputStream { + private final CompletableFuture future = new CompletableFuture<>(); + + FaultyByteArrayOutputStream() { + future.completeExceptionally(new RuntimeException("faulty")); + } + + @Override + public CompletableFuture closeFuture() { + return future; + } + } + + private static javax.tools.JavaFileManager.Location resolveSystemModules() { + try { + return StandardLocation.valueOf("SYSTEM_MODULES"); + } catch (IllegalArgumentException ignored) { + return null; + } + } + + private static byte[] readFully(InputStream is) throws IOException { + ByteArrayOutputStream buffer = new ByteArrayOutputStream(); + byte[] chunk = new byte[1024]; + int read; + while ((read = is.read(chunk)) != -1) { + buffer.write(chunk, 0, read); + } + return buffer.toByteArray(); + } +} diff --git a/src/test/resources/eg/FooBarTee2.jcf b/src/test/resources/eg/FooBarTee2.jcf index f24aad0..7eafcec 100644 --- a/src/test/resources/eg/FooBarTee2.jcf +++ b/src/test/resources/eg/FooBarTee2.jcf @@ -1,5 +1,5 @@ /* - * Copyright 2014 Higher Frequency Trading + * Copyright 2014-2025 chronicle.software * * http://www.higherfrequencytrading.com * @@ -15,7 +15,6 @@ * See the License for the specific language governing permissions and * limitations under the License. */ - package eg; import eg.components.BarImpl;