| #!/usr/bin/env python |
| """ |
| 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 os |
| |
| import time |
| |
| import metron_security |
| import metron_service |
| from resource_management.core.exceptions import Fail |
| from resource_management.core.logger import Logger |
| from resource_management.core.resources.system import Execute |
| |
| |
| # Wrap major operations and functionality in this class |
| class ProfilerCommands: |
| __params = None |
| __profiler_topic = None |
| __profiler_topology = None |
| __configured = False |
| __acl_configured = False |
| __hbase_configured = False |
| __hbase_acl_configured = False |
| |
| def __init__(self, params): |
| if params is None: |
| raise ValueError("params argument is required for initialization") |
| self.__params = params |
| self.__profiler_topology = params.metron_profiler_topology |
| self.__profiler_topic = params.profiler_input_topic |
| self.__configured = os.path.isfile(self.__params.profiler_configured_flag_file) |
| self.__acl_configured = os.path.isfile(self.__params.profiler_acl_configured_flag_file) |
| self.__hbase_configured = os.path.isfile(self.__params.profiler_hbase_configured_flag_file) |
| self.__hbase_acl_configured = os.path.isfile(self.__params.profiler_hbase_acl_configured_flag_file) |
| |
| def __get_topics(self): |
| return [self.__profiler_topic] |
| |
| def __get_kafka_acl_groups(self): |
| return ['profiler'] |
| |
| def is_configured(self): |
| return self.__configured |
| |
| def is_acl_configured(self): |
| return self.__acl_configured |
| |
| def is_hbase_configured(self): |
| return self.__hbase_configured |
| |
| def is_hbase_acl_configured(self): |
| return self.__hbase_acl_configured |
| |
| def set_configured(self): |
| metron_service.set_configured(self.__params.metron_user, self.__params.profiler_configured_flag_file, "Setting Profiler configured flag to true") |
| |
| def set_acl_configured(self): |
| metron_service.set_configured(self.__params.metron_user, self.__params.profiler_acl_configured_flag_file, "Setting Profiler acl configured flag to true") |
| |
| def set_hbase_configured(self): |
| metron_service.set_configured(self.__params.metron_user, self.__params.profiler_hbase_configured_flag_file, "Setting HBase configured to True for profiler") |
| |
| def set_hbase_acl_configured(self): |
| metron_service.set_configured(self.__params.metron_user, self.__params.profiler_hbase_acl_configured_flag_file, "Setting HBase ACL configured to True for profiler") |
| |
| def create_hbase_tables(self): |
| Logger.info("Creating HBase table '{0}' for profiler".format( |
| self.__params.profiler_hbase_table)) |
| metron_service.create_hbase_table(self.__params, |
| self.__params.profiler_hbase_table, |
| self.__params.profiler_hbase_cf) |
| self.set_hbase_configured() |
| Logger.info("Done creating HBase Tables for profiler") |
| |
| def init_kafka_acls(self): |
| Logger.info('Creating Kafka ACls for profiler') |
| metron_service.init_kafka_acls(self.__params, self.__get_topics()) |
| metron_service.init_kafka_acl_groups(self.__params, self.__get_kafka_acl_groups()) |
| |
| def set_hbase_acls(self): |
| Logger.info("Setting HBase ACLs for profiler") |
| if self.__params.security_enabled: |
| metron_security.kinit(self.__params.kinit_path_local, |
| self.__params.hbase_keytab_path, |
| self.__params.hbase_principal_name, |
| execute_user=self.__params.hbase_user) |
| |
| cmd = "echo \"grant '{0}', 'RW', '{1}'\" | hbase shell -n" |
| add_table_acl_cmd = cmd.format(self.__params.metron_user, self.__params.profiler_hbase_table) |
| Execute(add_table_acl_cmd, |
| tries=3, |
| try_sleep=5, |
| logoutput=False, |
| path='/usr/sbin:/sbin:/usr/local/bin:/bin:/usr/bin', |
| user=self.__params.hbase_user |
| ) |
| |
| self.set_hbase_acl_configured() |
| Logger.info("Done setting HBase ACLs for profiler") |
| |
| def start_profiler_topology(self, env): |
| Logger.info('Starting ' + self.__profiler_topology) |
| |
| if not self.is_topology_active(env): |
| if self.__params.security_enabled: |
| metron_security.kinit(self.__params.kinit_path_local, |
| self.__params.metron_keytab_path, |
| self.__params.metron_principal_name, |
| execute_user=self.__params.metron_user) |
| start_cmd_template = """{0}/bin/start_profiler_topology.sh \ |
| -s {1} \ |
| -z {2}""" |
| start_cmd = start_cmd_template.format(self.__params.metron_home, |
| self.__profiler_topology, |
| self.__params.zookeeper_quorum) |
| Execute(start_cmd, user=self.__params.metron_user, tries=3, try_sleep=5, logoutput=True) |
| else: |
| Logger.info('Profiler topology already running') |
| |
| Logger.info('Finished starting profiler topology') |
| |
| def stop_profiler_topology(self, env): |
| Logger.info('Stopping ' + self.__profiler_topology) |
| |
| if self.is_topology_active(env): |
| if self.__params.security_enabled: |
| metron_security.kinit(self.__params.kinit_path_local, |
| self.__params.metron_keytab_path, |
| self.__params.metron_principal_name, |
| execute_user=self.__params.metron_user) |
| stop_cmd = 'storm kill ' + self.__profiler_topology |
| Execute(stop_cmd, user=self.__params.metron_user, tries=3, try_sleep=5, logoutput=True) |
| |
| else: |
| Logger.info("Profiler topology already stopped") |
| |
| Logger.info('Done stopping profiler topologies') |
| |
| def restart_profiler_topology(self, env): |
| Logger.info('Restarting the profiler topologies') |
| self.stop_profiler_topology(env) |
| |
| # Wait for old topology to be cleaned up by Storm, before starting again. |
| retries = 0 |
| topology_active = self.is_topology_active(env) |
| while self.is_topology_active(env) and retries < 3: |
| Logger.info('Existing topology still active. Will wait and retry') |
| time.sleep(10) |
| retries += 1 |
| |
| if not topology_active: |
| Logger.info('Waiting for storm kill to complete') |
| time.sleep(30) |
| self.start_profiler_topology(env) |
| Logger.info('Done restarting the profiler topologies') |
| else: |
| Logger.warning('Retries exhausted. Existing topology not cleaned up. Aborting topology start.') |
| |
| def is_topology_active(self, env): |
| env.set_params(self.__params) |
| active = True |
| topologies = metron_service.get_running_topologies(self.__params) |
| is_running = False |
| if self.__profiler_topology in topologies: |
| is_running = topologies[self.__profiler_topology] in ['ACTIVE', 'REBALANCING'] |
| active &= is_running |
| return active |
| |
| def service_check(self, env): |
| """ |
| Performs a service check for the Profiler. |
| :param env: Environment |
| """ |
| Logger.info('Checking Kafka topics for Profiler') |
| metron_service.check_kafka_topics(self.__params, [self.__params.profiler_input_topic]) |
| |
| Logger.info("Checking HBase table for profiler") |
| metron_service.check_hbase_table(self.__params, self.__params.profiler_hbase_table) |
| metron_service.check_hbase_column_family(self.__params, self.__params.profiler_hbase_table, self.__params.profiler_hbase_cf) |
| |
| if self.__params.security_enabled: |
| |
| Logger.info('Checking Kafka ACLs for Profiler') |
| metron_service.check_kafka_acls(self.__params, self.__get_topics()) |
| metron_service.check_kafka_acl_groups(self.__params, self.__get_kafka_acl_groups()) |
| |
| Logger.info('Checking Kafka ACLs for Profiler') |
| metron_service.check_hbase_acls(self.__params, self.__params.profiler_hbase_table) |
| |
| Logger.info("Checking for Profiler topology") |
| if not self.is_topology_active(env): |
| raise Fail("Profiler topology not running") |
| |
| Logger.info("Profiler service check completed successfully") |
