ambari/ambari-server/src/main/resources/common-services/MAHOUT/1.0.0.2.3/package/scripts/params.py

"""
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

"""
from resource_management import *
from resource_management.libraries.functions import conf_select
from resource_management.libraries.functions import stack_select
from resource_management.libraries.functions import format
from resource_management.libraries.functions.version import format_stack_version
from resource_management.libraries.functions.default import default
from resource_management.libraries.functions import get_kinit_path
from resource_management.libraries.script.script import Script

# server configurations
config = Script.get_config()
tmp_dir = Script.get_tmp_dir()

stack_name = default("/hostLevelParams/stack_name", None)
host_sys_prepped = default("/hostLevelParams/host_sys_prepped", False)

stack_version_unformatted = str(config['hostLevelParams']['stack_version'])
stack_version_formatted = format_stack_version(stack_version_unformatted)

# New Cluster Stack Version that is defined during the RESTART of a Rolling Upgrade
version = default("/commandParams/version", None)

#mahout params
mahout_home = "/usr/hdp/current/mahout-client"
mahout_conf_dir = "/usr/hdp/current/mahout-client/conf"
mahout_user = config['configurations']['mahout-env']['mahout_user']

yarn_log_dir_prefix = config['configurations']['yarn-env']['yarn_log_dir_prefix']

#hadoop params
hadoop_bin_dir = stack_select.get_hadoop_dir("bin")
hadoop_home = stack_select.get_hadoop_dir("home")

# the configuration direction for HDFS/YARN/MapR is the hadoop config
# directory, which is symlinked by hadoop-client only
hadoop_conf_dir = conf_select.get_hadoop_conf_dir()

hdfs_user = config['configurations']['hadoop-env']['hdfs_user']
yarn_user = config['configurations']['yarn-env']['yarn_user']
hdfs_principal_name = config['configurations']['hadoop-env']['hdfs_principal_name']
hdfs_user_keytab = config['configurations']['hadoop-env']['hdfs_user_keytab']
smokeuser = config['configurations']['cluster-env']['smokeuser']
smokeuser_principal = config['configurations']['cluster-env']['smokeuser_principal_name']
user_group = config['configurations']['cluster-env']['user_group']
security_enabled = config['configurations']['cluster-env']['security_enabled']
smoke_user_keytab = config['configurations']['cluster-env']['smokeuser_keytab']
kinit_path_local = get_kinit_path(default('/configurations/kerberos-env/executable_search_paths', None))

# not supporting 32 bit jdk.
java64_home = config['hostLevelParams']['java_home']

log4j_props = config['configurations']['mahout-log4j']['content']

hdfs_site = config['configurations']['hdfs-site']
default_fs = config['configurations']['core-site']['fs.defaultFS']

dfs_type = default("/commandParams/dfs_type", "")

import functools
#create partial functions with common arguments for every HdfsResource call
#to create/delete hdfs directory/file/copyfromlocal we need to call params.HdfsResource in code
HdfsResource = functools.partial(
  HdfsResource,
  user=hdfs_user,
  hdfs_resource_ignore_file = "/var/lib/ambari-agent/data/.hdfs_resource_ignore",
  security_enabled = security_enabled,
  keytab = hdfs_user_keytab,
  kinit_path_local = kinit_path_local,
  hadoop_bin_dir = hadoop_bin_dir,
  hadoop_conf_dir = hadoop_conf_dir,
  principal_name = hdfs_principal_name,
  hdfs_site = hdfs_site,
  default_fs = default_fs,
  dfs_type = dfs_type
)