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gateway_server.py
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109 lines (85 loc) · 3.46 KB
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################################################################################
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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.
################################################################################
import importlib
import os
import platform
import signal
from subprocess import Popen, PIPE
from paimon_python_java import constants
def on_windows():
return platform.system() == "Windows"
def find_java_executable():
java_executable = "java.exe" if on_windows() else "java"
java_home = None
if java_home is None and "JAVA_HOME" in os.environ:
java_home = os.environ["JAVA_HOME"]
if java_home is not None:
java_executable = os.path.join(java_home, "bin", java_executable)
return java_executable
def launch_gateway_server_process(env):
java_executable = find_java_executable()
# TODO construct Java module log settings
log_settings = []
jvm_args = env.get(constants.PYPAIMON_JVM_ARGS, '').split()
classpath = _get_classpath(env)
main_args = env.get(constants.PYPAIMON_MAIN_ARGS, '').split()
command = [
java_executable,
*jvm_args,
# default jvm args
"-XX:+IgnoreUnrecognizedVMOptions",
"--add-opens=jdk.proxy2/jdk.proxy2=ALL-UNNAMED",
*log_settings,
"-cp",
classpath,
"-c",
constants.PYPAIMON_MAIN_CLASS,
*main_args
]
preexec_fn = None
if not on_windows():
def preexec_func():
# ignore ctrl-c / SIGINT
signal.signal(signal.SIGINT, signal.SIG_IGN)
preexec_fn = preexec_func
return Popen(list(filter(lambda c: len(c) != 0, command)),
stdin=PIPE, stderr=PIPE, preexec_fn=preexec_fn, env=env)
_JAVA_IMPL_MODULE = 'paimon_python_java'
_JAVA_DEPS = 'java_dependencies'
_JAVA_BRIDGE = 'paimon-python-java-bridge'
def _get_classpath(env):
classpath = []
module = importlib.import_module(_JAVA_IMPL_MODULE)
builtin_java_bridge = os.path.join(*module.__path__, _JAVA_DEPS, _JAVA_BRIDGE + '.jar')
classpath.append(builtin_java_bridge)
# user defined
if constants.PYPAIMON_JAVA_CLASSPATH in env:
classpath.append(env[constants.PYPAIMON_JAVA_CLASSPATH])
# hadoop
hadoop_classpath = _get_hadoop_classpath(env)
if hadoop_classpath is not None:
classpath.append(hadoop_classpath)
return os.pathsep.join(classpath)
def _get_hadoop_classpath(env):
if constants.PYPAIMON_HADOOP_CLASSPATH in env:
return env[constants.PYPAIMON_HADOOP_CLASSPATH]
if 'HADOOP_CLASSPATH' in env:
return env['HADOOP_CLASSPATH']
else:
raise EnvironmentError(f"You haven't set '{constants.PYPAIMON_HADOOP_CLASSPATH}', \
and 'HADOOP_CLASSPATH' is also not set. Ensure one of them is set.")