Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

Appearance settings

Commit e2c4d40

Browse filesBrowse files
vorburgercopybara-github
authored andcommitted
fix: Add missing logging for MCP Servers
This is (very) useful for debugging MCP related problems. I've stumbled over this while I've built https://docs.enola.dev/concepts/mcp. The code is originally from (my) https://github.com/enola-dev/enola/blob/ffc004666ea7f71357562ef12464d2b9fdbf9dbd/java/dev/enola/ai/mcp/McpServer.java#L29, but I'm hereby donating it! ;-) PiperOrigin-RevId: 796463552
1 parent 864d8e4 commit e2c4d40
Copy full SHA for e2c4d40

File tree

Expand file treeCollapse file tree

2 files changed

+42
-0
lines changed
Open diff view settings
Filter options
Expand file treeCollapse file tree

2 files changed

+42
-0
lines changed
Open diff view settings
Collapse file
+41Lines changed: 41 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,41 @@
1+
/*
2+
* Copyright 2025 Google LLC
3+
*
4+
* Licensed under the Apache License, Version 2.0 (the "License");
5+
* you may not use this file except in compliance with the License.
6+
* You may obtain a copy of the License at
7+
*
8+
* http://www.apache.org/licenses/LICENSE-2.0
9+
*
10+
* Unless required by applicable law or agreed to in writing, software
11+
* distributed under the License is distributed on an "AS IS" BASIS,
12+
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13+
* See the License for the specific language governing permissions and
14+
* limitations under the License.
15+
*/
16+
package com.google.adk.tools.mcp;
17+
18+
import io.modelcontextprotocol.spec.McpSchema;
19+
import io.modelcontextprotocol.spec.McpSchema.LoggingMessageNotification;
20+
import java.util.function.Consumer;
21+
import org.slf4j.Logger;
22+
import org.slf4j.LoggerFactory;
23+
import org.slf4j.event.Level;
24+
25+
class McpServerLogConsumer implements Consumer<LoggingMessageNotification> {
26+
27+
@Override
28+
public void accept(LoggingMessageNotification notif) {
29+
Logger log = LoggerFactory.getLogger(notif.logger());
30+
log.atLevel(convert(notif.level())).log("{}", notif.data());
31+
}
32+
33+
private Level convert(McpSchema.LoggingLevel level) {
34+
return switch (level) {
35+
case DEBUG -> Level.DEBUG;
36+
case INFO, NOTICE -> Level.INFO;
37+
case WARNING -> Level.WARN;
38+
case ERROR, CRITICAL, ALERT, EMERGENCY -> Level.ERROR;
39+
};
40+
}
41+
}
Collapse file

‎core/src/main/java/com/google/adk/tools/mcp/McpSessionManager.java‎

Copy file name to clipboardExpand all lines: core/src/main/java/com/google/adk/tools/mcp/McpSessionManager.java
+1Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -71,6 +71,7 @@ public static McpSyncClient initializeSession(
7171
.initializationTimeout(
7272
Optional.ofNullable(initializationTimeout).orElse(Duration.ofSeconds(10)))
7373
.requestTimeout(Optional.ofNullable(requestTimeout).orElse(Duration.ofSeconds(10)))
74+
.loggingConsumer(new McpServerLogConsumer())
7475
.capabilities(ClientCapabilities.builder().build())
7576
.build();
7677
InitializeResult initResult = client.initialize();

0 commit comments

Comments
0 (0)
Morty Proxy This is a proxified and sanitized view of the page, visit original site.