254 lines
7.7 KiB
Python
254 lines
7.7 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# (c) 2013, James Martin <jmartin@basho.com>, Drew Kerrigan <dkerrigan@basho.com>
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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#
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DOCUMENTATION = '''
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---
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module: riak
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short_description: This module handles some common Riak operations
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description:
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- This module can be used to join nodes to a cluster, check
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the status of the cluster.
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version_added: "1.2"
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options:
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command:
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description:
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- The command you would like to perform against the cluster.
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required: false
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default: null
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aliases: []
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choices: ['ping', 'kv_test', 'join', 'plan', 'commit']
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config_dir:
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description:
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- The path to the riak configuration directory
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required: false
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default: /etc/riak
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aliases: []
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http_conn:
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description:
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- The ip address and port that is listening for Riak HTTP queries
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required: false
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default: 127.0.0.1:8098
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aliases: []
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target_node:
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description:
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- The target node for certain operations (join, ping)
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required: false
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default: riak@127.0.0.1
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aliases: []
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wait_for_handoffs:
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description:
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- Number of seconds to wait for handoffs to complete.
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required: false
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default: null
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aliases: []
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type: 'int'
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wait_for_ring:
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description:
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- Number of seconds to wait for all nodes to agree on the ring.
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required: false
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default: null
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aliases: []
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type: 'int'
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wait_for_service:
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description:
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- Waits for a riak service to come online before continuing.
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required: false
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default: None
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aliases: []
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choices: ['kv']
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validate_certs:
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description:
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- If C(no), SSL certificates will not be validated. This should only be used
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on personally controlled sites using self-signed certificates.
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required: false
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default: 'yes'
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choices: ['yes', 'no']
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version_added: 1.5.1
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'''
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EXAMPLES = '''
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# Join's a Riak node to another node
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- riak: command=join target_node=riak@10.1.1.1
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# Wait for handoffs to finish. Use with async and poll.
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- riak: wait_for_handoffs=yes
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# Wait for riak_kv service to startup
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- riak: wait_for_service=kv
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'''
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import urllib2
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import time
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import socket
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import sys
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try:
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import json
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except ImportError:
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import simplejson as json
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def ring_check(module, riak_admin_bin):
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cmd = '%s ringready 2> /dev/null' % riak_admin_bin
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rc, out, err = module.run_command(cmd)
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if rc == 0 and 'TRUE All nodes agree on the ring' in out:
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return True
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else:
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return False
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def main():
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module = AnsibleModule(
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argument_spec=dict(
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command=dict(required=False, default=None, choices=[
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'ping', 'kv_test', 'join', 'plan', 'commit']),
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config_dir=dict(default='/etc/riak'),
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http_conn=dict(required=False, default='127.0.0.1:8098'),
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target_node=dict(default='riak@127.0.0.1', required=False),
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wait_for_handoffs=dict(default=False, type='int'),
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wait_for_ring=dict(default=False, type='int'),
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wait_for_service=dict(
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required=False, default=None, choices=['kv'])
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),
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validate_certs = dict(default='yes', type='bool'),
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)
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command = module.params.get('command')
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config_dir = module.params.get('config_dir')
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http_conn = module.params.get('http_conn')
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target_node = module.params.get('target_node')
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wait_for_handoffs = module.params.get('wait_for_handoffs')
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wait_for_ring = module.params.get('wait_for_ring')
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wait_for_service = module.params.get('wait_for_service')
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#make sure riak commands are on the path
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riak_bin = module.get_bin_path('riak')
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riak_admin_bin = module.get_bin_path('riak-admin')
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timeout = time.time() + 120
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while True:
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if time.time() > timeout:
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module.fail_json(msg='Timeout, could not fetch Riak stats.')
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(response, info) = fetch_url(module, 'http://%s/stats' % (http_conn), force=True, timeout=5)
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if info['status'] == 200:
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stats_raw = response.read()
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break
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time.sleep(5)
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# here we attempt to load those stats,
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try:
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stats = json.loads(stats_raw)
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except:
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module.fail_json(msg='Could not parse Riak stats.')
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node_name = stats['nodename']
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nodes = stats['ring_members']
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ring_size = stats['ring_creation_size']
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rc, out, err = module.run_command([riak_bin, 'version'] )
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version = out.strip()
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result = dict(node_name=node_name,
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nodes=nodes,
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ring_size=ring_size,
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version=version)
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if command == 'ping':
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cmd = '%s ping %s' % ( riak_bin, target_node )
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rc, out, err = module.run_command(cmd)
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if rc == 0:
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result['ping'] = out
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else:
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module.fail_json(msg=out)
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elif command == 'kv_test':
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cmd = '%s test' % riak_admin_bin
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rc, out, err = module.run_command(cmd)
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if rc == 0:
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result['kv_test'] = out
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else:
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module.fail_json(msg=out)
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elif command == 'join':
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if nodes.count(node_name) == 1 and len(nodes) > 1:
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result['join'] = 'Node is already in cluster or staged to be in cluster.'
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else:
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cmd = '%s cluster join %s' % (riak_admin_bin, target_node)
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rc, out, err = module.run_command(cmd)
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if rc == 0:
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result['join'] = out
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result['changed'] = True
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else:
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module.fail_json(msg=out)
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elif command == 'plan':
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cmd = '%s cluster plan' % riak_admin_bin
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rc, out, err = module.run_command(cmd)
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if rc == 0:
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result['plan'] = out
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if 'Staged Changes' in out:
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result['changed'] = True
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else:
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module.fail_json(msg=out)
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elif command == 'commit':
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cmd = '%s cluster commit' % riak_admin_bin
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rc, out, err = module.run_command(cmd)
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if rc == 0:
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result['commit'] = out
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result['changed'] = True
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else:
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module.fail_json(msg=out)
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# this could take a while, recommend to run in async mode
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if wait_for_handoffs:
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timeout = time.time() + wait_for_handoffs
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while True:
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cmd = '%s transfers 2> /dev/null' % riak_admin_bin
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rc, out, err = module.run_command(cmd)
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if 'No transfers active' in out:
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result['handoffs'] = 'No transfers active.'
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break
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time.sleep(10)
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if time.time() > timeout:
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module.fail_json(msg='Timeout waiting for handoffs.')
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if wait_for_service:
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cmd = '%s wait_for_service riak_%s %s' % ( riak_admin_bin, wait_for_service, node_name)
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rc, out, err = module.run_command(cmd)
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result['service'] = out
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if wait_for_ring:
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timeout = time.time() + wait_for_ring
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while True:
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if ring_check(module, riak_admin_bin):
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break
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time.sleep(10)
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if time.time() > timeout:
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module.fail_json(msg='Timeout waiting for nodes to agree on ring.')
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result['ring_ready'] = ring_check(module, riak_admin_bin)
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module.exit_json(**result)
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# import module snippets
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from ansible.module_utils.basic import *
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main()
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