diff options
Diffstat (limited to 'ms/command-executor')
| -rwxr-xr-x | ms/command-executor/pom.xml-n | 159 | ||||
| -rw-r--r-- | ms/command-executor/src/main/python/command_executor_handler.py | 120 | ||||
| -rw-r--r-- | ms/command-executor/src/main/python/command_executor_server.py | 11 | ||||
| -rw-r--r-- | ms/command-executor/src/main/python/utils.py | 41 |
4 files changed, 112 insertions, 219 deletions
diff --git a/ms/command-executor/pom.xml-n b/ms/command-executor/pom.xml-n deleted file mode 100755 index b4e139d43..000000000 --- a/ms/command-executor/pom.xml-n +++ /dev/null @@ -1,159 +0,0 @@ -<?xml version="1.0" encoding="UTF-8"?> -<!-- - ~ Copyright © 2019 Bell Canada. - ~ - ~ 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. - --> -<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> - <modelVersion>4.0.0</modelVersion> - - <parent> - <groupId>org.onap.ccsdk.cds</groupId> - <artifactId>ms</artifactId> - <version>1.0.0-SNAPSHOT</version> - <relativePath>..</relativePath> - </parent> - - <artifactId>command-executor</artifactId> - <packaging>pom</packaging> - - <name>Command Executor</name> - <description>Micro-service providing python environment with gRPC binding for command execution</description> - - <properties> - <assembly.id>maven</assembly.id> - <image.name>onap/ccsdk-commandexecutor</image.name> - <docker.push.phase>deploy</docker.push.phase> - <docker.verbose>true</docker.verbose> - <ccsdk.project.version>${project.version}</ccsdk.project.version> - <ccsdk.build.timestamp>${maven.build.timestamp}</ccsdk.build.timestamp> - <maven.build.timestamp.format>yyyyMMdd'T'HHmmss'Z'</maven.build.timestamp.format> - </properties> - - <build> - <plugins> - <plugin> - <artifactId>maven-resources-plugin</artifactId> - <version>2.6</version> - <executions> - <execution> - <id>copy-dockerfile</id> - <goals> - <goal>copy-resources</goal> - </goals> - <phase>validate</phase> - <configuration> - <outputDirectory>${basedir}/target/docker-stage</outputDirectory> - <resources> - <resource> - <directory>src/main/docker</directory> - <includes> - <include>Dockerfile</include> - <include>start.sh</include> - </includes> - <filtering>true</filtering> - </resource> - </resources> - </configuration> - </execution> - </executions> - </plugin> - <plugin> - <artifactId>maven-assembly-plugin</artifactId> - <version>3.1.0</version> - <configuration> - <outputDirectory>${basedir}/target/docker-stage</outputDirectory> - <descriptors> - <descriptor>src/main/docker/distribution.xml</descriptor> - </descriptors> - <tarLongFileMode>posix</tarLongFileMode> - </configuration> - <executions> - <execution> - <id>${assembly.id}</id> - <phase>package</phase> - <goals> - <goal>single</goal> - </goals> - </execution> - </executions> - </plugin> - <plugin> - <groupId>org.codehaus.groovy.maven</groupId> - <artifactId>gmaven-plugin</artifactId> - <version>1.0</version> - <executions> - <execution> - <phase>validate</phase> - <goals> - <goal>execute</goal> - </goals> - <configuration> - <source>${basedir}/../../TagVersion.groovy</source> - </configuration> - </execution> - </executions> - </plugin> - </plugins> - </build> - - <profiles> - <profile> - <id>docker</id> - <build> - <plugins> - <plugin> - <groupId>io.fabric8</groupId> - <artifactId>docker-maven-plugin</artifactId> - <version>0.26.1</version> - <inherited>false</inherited> - <configuration> - <images> - <image> - <name>${image.name}</name> - <build> - <cleanup>try</cleanup> - <dockerFileDir>${basedir}/target/docker-stage</dockerFileDir> - <tags> - <tag>${project.docker.latestminortag.version}</tag> - <tag>${project.docker.latestfulltag.version}</tag> - <tag>${project.docker.latesttagtimestamp.version}</tag> - </tags> - </build> - </image> - </images> - <verbose>true</verbose> - </configuration> - <executions> - <execution> - <id>generate-images</id> - <phase>package</phase> - <goals> - <goal>build</goal> - </goals> - </execution> - <execution> - <id>push-images</id> - <phase>${docker.push.phase}</phase> - <goals> - <goal>build</goal> - <goal>push</goal> - </goals> - </execution> - </executions> - </plugin> - </plugins> - </build> - </profile> - </profiles> -</project> diff --git a/ms/command-executor/src/main/python/command_executor_handler.py b/ms/command-executor/src/main/python/command_executor_handler.py index 3219a974b..9d41b2c7b 100644 --- a/ms/command-executor/src/main/python/command_executor_handler.py +++ b/ms/command-executor/src/main/python/command_executor_handler.py @@ -45,41 +45,68 @@ class CommandExecutorHandler: def prepare_env(self, request, results): if not self.is_installed(): - self.create_venv() - if not self.activate_venv(): - return False - - f = open(self.installed, "w+") - if not self.install_packages(request, CommandExecutor_pb2.pip, f, results): - return False - f.write("\r\n") - results.append("\n") - if not self.install_packages(request, CommandExecutor_pb2.ansible_galaxy, f, results): - return False - f.close() + create_venv_status = self.create_venv() + if not create_venv_status["cds_is_successful"]: + err_msg = "ERROR: failed to prepare environment for request {} due to error in creating virtual Python env. Original error {}".format(self.blueprint_id, create_venv_status["err_msg"]) + self.logger.error(err_msg) + return utils.build_ret_data(False, err_msg) + + activate_venv_status = self.activate_venv() + if not activate_venv_status["cds_is_successful"]: + err_msg = "ERROR: failed to prepare environment for request {} due Python venv_activation. Original error {}".format(self.blueprint_id, activate_venv_status["err_msg"]) + self.logger.error(err_msg) + return utils.build_ret_data(False, err_msg) + try: + with open(self.installed, "w+") as f: + if not self.install_packages(request, CommandExecutor_pb2.pip, f, results): + return utils.build_ret_data(False, "ERROR: failed to prepare environment for request {} during pip package install.".format(self.blueprint_id)) + f.write("\r\n") # TODO: is \r needed? + results.append("\n") + if not self.install_packages(request, CommandExecutor_pb2.ansible_galaxy, f, results): + return utils.build_ret_data(False, "ERROR: failed to prepare environment for request {} during Ansible install.".format(self.blueprint_id)) + except Exception as ex: + err_msg = "ERROR: failed to prepare environment for request {} during installing packages. Exception: {}".format(self.blueprint_id, ex) + self.logger.error(err_msg) + return utils.build_ret_data(False, err_msg) else: - f = open(self.installed, "r") - results.append(f.read()) - f.close() + try: + with open(self.installed, "r") as f: + results.append(f.read()) + except Exception as ex: + return utils.build_ret_data(False, "ERROR: failed to prepare environment during reading 'installed' file {}. Exception: {}".format(self.installed, ex)) # deactivate_venv(blueprint_id) - return True + return utils.build_ret_data(True, "") def execute_command(self, request, results): - - if not self.activate_venv(): - return False - - cmd = "cd " + self.venv_home - - if "ansible-playbook" in request.command: - cmd = cmd + "; " + request.command + " -e 'ansible_python_interpreter=" + self.venv_home + "/bin/python'" - else: - cmd = cmd + "; " + request.command + " " + re.escape(MessageToJson(request.properties)) - payload_result = {} - payload_section = [] - is_payload_section = False + # workaround for when packages are not specified, we may not want to go through the install step + # can just call create_venv from here. + if not self.is_installed(): + self.create_venv() + try: + if not self.is_installed(): + create_venv_status = self.create_venv + if not create_venv_status["cds_is_successful"]: + err_msg = "{} - Failed to execute command during venv creation. Original error: {}".format(self.blueprint_id, create_venv_status["err_msg"]) + results.append(err_msg) + return utils.build_ret_data(False, err_msg) + activate_response = self.activate_venv() + if not activate_response["cds_is_successful"]: + orig_error = activate_response["err_msg"] + err_msg = "{} - Failed to execute command during environment activation. Original error: {}".format(self.blueprint_id, orig_error) + results.append(err_msg) #TODO: get rid of results and just rely on the return data struct. + return utils.build_ret_data(False, err_msg) + + cmd = "cd " + self.venv_home + + ### TODO: replace with os.environ['VIRTUAL_ENV']? + if "ansible-playbook" in request.command: + cmd = cmd + "; " + request.command + " -e 'ansible_python_interpreter=" + self.venv_home + "/bin/python'" + else: + cmd = cmd + "; " + request.command + " " + re.escape(MessageToJson(request.properties)) + payload_section = [] + is_payload_section = False ### extract the original header request into sys-env variables ### RequestID @@ -113,14 +140,17 @@ class CommandExecutorHandler: payload_section.append(output.strip()) rc = newProcess.poll() except Exception as e: - self.logger.info("{} - Failed to execute command. Error: {}".format(self.blueprint_id, e)) + err_msg = "{} - Failed to execute command. Error: {}".format(self.blueprint_id, e) + self.logger.info(err_msg) results.append(e) - payload_result["cds_return_code"] = False + payload_result.update(utils.build_ret_data(False, err_msg)) return payload_result # deactivate_venv(blueprint_id) - - payload_result["cds_return_code"] = rc + #Since return code is only used to check if it's zero (success), we can just return success flag instead. + self.logger.debug("python return_code : {}".format(rc)) + is_execution_successful = rc == 0 + payload_result.update(utils.build_ret_data(is_execution_successful, "")) return payload_result def install_packages(self, request, type, f, results): @@ -155,6 +185,7 @@ class CommandExecutorHandler: env = dict(os.environ) if "https_proxy" in os.environ: env['https_proxy'] = os.environ['https_proxy'] + self.logger.info("Using https_proxy: ", env['https_proxy']) try: results.append(subprocess.run(command, check=True, stdout=PIPE, stderr=PIPE, env=env).stdout.decode()) @@ -182,6 +213,10 @@ class CommandExecutorHandler: results.append(e.stderr.decode()) return False + # Returns a map with 'status' and 'err_msg'. + # 'status' True indicates success. + # 'err_msg' indicates an error occurred. The presence of err_msg may not be fatal, + # status should be set to False for fatal errors. def create_venv(self): self.logger.info("{} - Create Python Virtual Environment".format(self.blueprint_id)) try: @@ -189,10 +224,14 @@ class CommandExecutorHandler: # venv doesn't populate the activate_this.py script, hence we use from virtualenv venv.create(self.venv_home, with_pip=True, system_site_packages=True) virtualenv.writefile(os.path.join(bin_dir, "activate_this.py"), virtualenv.ACTIVATE_THIS) + return utils.build_ret_data(True, "") except Exception as err: - self.logger.info( - "{} - Failed to provision Python Virtual Environment. Error: {}".format(self.blueprint_id, err)) + err_msg = "{} - Failed to provision Python Virtual Environment. Error: {}".format(self.blueprint_id, err) + self.logger.info(err_msg) + return utils.build_ret_data(False, err_msg) + # return map cds_is_successful and err_msg. Status is True on success. err_msg may existence doesn't necessarily indicate fatal condition. + # the 'status' should be set to False to indicate error. def activate_venv(self): self.logger.info("{} - Activate Python Virtual Environment".format(self.blueprint_id)) @@ -203,14 +242,15 @@ class CommandExecutorHandler: path = "%s/bin/activate_this.py" % self.venv_home try: - exec (open(path).read(), {'__file__': path}) + with open(path) as activate_this_script: + exec (activate_this_script.read(), {'__file__': path}) exec (fixpathenvvar) self.logger.info("Running with PATH : {}".format(os.environ['PATH'])) - return True + return utils.build_ret_data(True, "") except Exception as err: - self.logger.info( - "{} - Failed to activate Python Virtual Environment. Error: {}".format(self.blueprint_id, err)) - return False + err_msg ="{} - Failed to activate Python Virtual Environment. Error: {}".format(self.blueprint_id, err) + self.logger.info( err_msg) + return utils.build_ret_data(False, err_msg) def deactivate_venv(self): self.logger.info("{} - Deactivate Python Virtual Environment".format(self.blueprint_id)) diff --git a/ms/command-executor/src/main/python/command_executor_server.py b/ms/command-executor/src/main/python/command_executor_server.py index 39cd1e6da..3435e2272 100644 --- a/ms/command-executor/src/main/python/command_executor_server.py +++ b/ms/command-executor/src/main/python/command_executor_server.py @@ -37,11 +37,12 @@ class CommandExecutorServer(CommandExecutor_pb2_grpc.CommandExecutorServiceServi results = [] handler = CommandExecutorHandler(request) - if not handler.prepare_env(request, results): + prepare_env_response = handler.prepare_env(request, results) + if not prepare_env_response["cds_is_successful"]: self.logger.info("{} - Failed to prepare python environment. {}".format(blueprint_id, results)) - return utils.build_response(request, results, {}, False) + return utils.build_grpc_response(request, results, {}, False) self.logger.info("{} - Package installation logs {}".format(blueprint_id, results)) - return utils.build_response(request, results, {}, True) + return utils.build_grpc_response(request, results, {}, True) def executeCommand(self, request, context): blueprint_id = utils.get_blueprint_id(request) @@ -53,12 +54,12 @@ class CommandExecutorServer(CommandExecutor_pb2_grpc.CommandExecutorServiceServi payload_result = {} handler = CommandExecutorHandler(request) payload_result = handler.execute_command(request, log_results) - if payload_result["cds_return_code"] != 0: + if not payload_result["cds_is_successful"]: self.logger.info("{} - Failed to executeCommand. {}".format(blueprint_id, log_results)) else: self.logger.info("{} - Execution finished successfully.".format(blueprint_id)) - ret = utils.build_response(request, log_results, payload_result, payload_result["cds_return_code"] == 0) + ret = utils.build_grpc_response(request, log_results, payload_result, payload_result["cds_is_successful"]) self.logger.info("Payload returned %s" % payload_result) return ret
\ No newline at end of file diff --git a/ms/command-executor/src/main/python/utils.py b/ms/command-executor/src/main/python/utils.py index a3748eb17..574be51db 100644 --- a/ms/command-executor/src/main/python/utils.py +++ b/ms/command-executor/src/main/python/utils.py @@ -18,23 +18,34 @@ from google.protobuf.timestamp_pb2 import Timestamp import proto.CommandExecutor_pb2 as CommandExecutor_pb2 import json + def get_blueprint_id(request): - blueprint_name = request.identifiers.blueprintName - blueprint_version = request.identifiers.blueprintVersion - return blueprint_name + '/' + blueprint_version + blueprint_name = request.identifiers.blueprintName + blueprint_version = request.identifiers.blueprintVersion + return blueprint_name + '/' + blueprint_version +# Create a response for grpc. Fills in the timestamp as well as removes cds_is_successful element +def build_grpc_response(request, log_results, payload_return, is_success=False): + if is_success: + status = CommandExecutor_pb2.SUCCESS + else: + status = CommandExecutor_pb2.FAILURE -def build_response(request, log_results, payload_return, is_success=False): - if is_success: - status = CommandExecutor_pb2.SUCCESS - else: - status = CommandExecutor_pb2.FAILURE + timestamp = Timestamp() + timestamp.GetCurrentTime() - timestamp = Timestamp() - timestamp.GetCurrentTime() + if "cds_is_successful" in payload_return: + payload_return.pop('cds_is_successful') + payload_str = json.dumps(payload_return) + return CommandExecutor_pb2.ExecutionOutput(requestId=request.requestId, + response=log_results, + status=status, + payload=payload_str, + timestamp=timestamp) - if 'cds_return_code' in payload_return: - payload_return.pop('cds_return_code') - payload_str = json.dumps(payload_return) - return CommandExecutor_pb2.ExecutionOutput(requestId=request.requestId, response=log_results, status=status, - payload=payload_str, timestamp=timestamp) +# build a return data structure which may contain an error message +def build_ret_data(cds_is_successful, err_msg): + ret_data = {"cds_is_successful": cds_is_successful } + if err_msg != "": + ret_data["err_msg"] = err_msg + return ret_data |