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#!/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.
Ambari Agent
"""
__all__ = ["is_lzo_enabled", "should_install_phoenix", "should_install_ams_collector", "should_install_ams_grafana",
"should_install_mysql", "should_install_mysl_connector"]
import os
from resource_management.libraries.script import Script
from resource_management.libraries.functions.default import default
def should_install_lzo():
config = Script.get_config()
io_compression_codecs = default("/configurations/core-site/io.compression.codecs", None)
lzo_enabled = io_compression_codecs is not None and "com.hadoop.compression.lzo" in io_compression_codecs.lower()
return lzo_enabled
def should_install_phoenix():
phoenix_hosts = default('/clusterHostInfo/phoenix_query_server_hosts', [])
phoenix_enabled = default('/configurations/hbase-env/phoenix_sql_enabled', False)
has_phoenix = len(phoenix_hosts) > 0
return phoenix_enabled or has_phoenix
def should_install_ams_collector():
config = Script.get_config()
return 'role' in config and config['role'] == "METRICS_COLLECTOR"
def should_install_ams_grafana():
config = Script.get_config()
return 'role' in config and config['role'] == "METRICS_GRAFANA"
def should_install_mysql():
config = Script.get_config()
hive_database = config['configurations']['hive-env']['hive_database']
hive_use_existing_db = hive_database.startswith('Existing')
if hive_use_existing_db or 'role' in config and config['role'] != "MYSQL_SERVER":
return False
return True
def should_install_mysl_connector():
mysql_jdbc_driver_jar = "/usr/share/java/mysql-connector-java.jar"
return not os.path.exists(mysql_jdbc_driver_jar)
def should_install_hive_atlas():
atlas_hosts = default('/clusterHostInfo/atlas_server_hosts', [])
has_atlas = len(atlas_hosts) > 0
return has_atlas
def should_install_kerberos_server():
config = Script.get_config()
return 'role' in config and config['role'] != "KERBEROS_CLIENT"
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