mirror of
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228 lines
7.2 KiB
Python
228 lines
7.2 KiB
Python
#!/usr/bin/python
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# Copyright: Ansible Project
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = '''
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---
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module: ecs_cluster
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short_description: create or terminate ecs clusters
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notes:
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- When deleting a cluster, the information returned is the state of the cluster prior to deletion.
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- It will also wait for a cluster to have instances registered to it.
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description:
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- Creates or terminates ecs clusters.
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version_added: "2.0"
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author: Mark Chance (@Java1Guy)
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requirements: [ boto3 ]
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options:
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state:
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description:
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- The desired state of the cluster
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required: true
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choices: ['present', 'absent', 'has_instances']
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name:
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description:
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- The cluster name
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required: true
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delay:
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description:
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- Number of seconds to wait
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required: false
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repeat:
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description:
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- The number of times to wait for the cluster to have an instance
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required: false
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extends_documentation_fragment:
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- aws
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- ec2
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'''
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EXAMPLES = '''
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# Note: These examples do not set authentication details, see the AWS Guide for details.
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# Cluster creation
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- ecs_cluster:
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name: default
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state: present
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# Cluster deletion
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- ecs_cluster:
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name: default
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state: absent
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- name: Wait for register
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ecs_cluster:
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name: "{{ new_cluster }}"
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state: has_instances
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delay: 10
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repeat: 10
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register: task_output
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'''
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RETURN = '''
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activeServicesCount:
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description: how many services are active in this cluster
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returned: 0 if a new cluster
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type: int
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clusterArn:
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description: the ARN of the cluster just created
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type: string
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returned: 0 if a new cluster
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sample: arn:aws:ecs:us-west-2:172139249013:cluster/test-cluster-mfshcdok
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clusterName:
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description: name of the cluster just created (should match the input argument)
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type: string
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returned: always
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sample: test-cluster-mfshcdok
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pendingTasksCount:
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description: how many tasks are waiting to run in this cluster
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returned: 0 if a new cluster
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type: int
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registeredContainerInstancesCount:
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description: how many container instances are available in this cluster
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returned: 0 if a new cluster
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type: int
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runningTasksCount:
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description: how many tasks are running in this cluster
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returned: 0 if a new cluster
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type: int
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status:
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description: the status of the new cluster
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returned: always
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type: string
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sample: ACTIVE
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'''
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import time
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try:
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import boto3
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HAS_BOTO3 = True
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except ImportError:
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HAS_BOTO3 = False
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.ec2 import boto3_conn, ec2_argument_spec, get_aws_connection_info
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class EcsClusterManager:
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"""Handles ECS Clusters"""
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def __init__(self, module):
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self.module = module
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# self.ecs = boto3.client('ecs')
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region, ec2_url, aws_connect_kwargs = get_aws_connection_info(module, boto3=True)
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self.ecs = boto3_conn(module, conn_type='client', resource='ecs',
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region=region, endpoint=ec2_url, **aws_connect_kwargs)
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def find_in_array(self, array_of_clusters, cluster_name, field_name='clusterArn'):
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for c in array_of_clusters:
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if c[field_name].endswith(cluster_name):
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return c
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return None
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def describe_cluster(self, cluster_name):
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response = self.ecs.describe_clusters(clusters=[
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cluster_name
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])
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if len(response['failures']) > 0:
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c = self.find_in_array(response['failures'], cluster_name, 'arn')
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if c and c['reason'] == 'MISSING':
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return None
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# fall thru and look through found ones
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if len(response['clusters']) > 0:
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c = self.find_in_array(response['clusters'], cluster_name)
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if c:
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return c
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raise Exception("Unknown problem describing cluster %s." % cluster_name)
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def create_cluster(self, clusterName='default'):
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response = self.ecs.create_cluster(clusterName=clusterName)
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return response['cluster']
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def delete_cluster(self, clusterName):
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return self.ecs.delete_cluster(cluster=clusterName)
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def main():
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argument_spec = ec2_argument_spec()
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argument_spec.update(dict(
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state=dict(required=True, choices=['present', 'absent', 'has_instances']),
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name=dict(required=True, type='str'),
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delay=dict(required=False, type='int', default=10),
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repeat=dict(required=False, type='int', default=10)
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))
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required_together = [['state', 'name']]
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module = AnsibleModule(argument_spec=argument_spec, supports_check_mode=True, required_together=required_together)
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if not HAS_BOTO3:
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module.fail_json(msg='boto3 is required.')
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cluster_mgr = EcsClusterManager(module)
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try:
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existing = cluster_mgr.describe_cluster(module.params['name'])
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except Exception as e:
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module.fail_json(msg="Exception describing cluster '" + module.params['name'] + "': " + str(e))
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results = dict(changed=False)
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if module.params['state'] == 'present':
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if existing and 'status' in existing and existing['status'] == "ACTIVE":
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results['cluster'] = existing
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else:
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if not module.check_mode:
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# doesn't exist. create it.
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results['cluster'] = cluster_mgr.create_cluster(module.params['name'])
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results['changed'] = True
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# delete the cluster
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elif module.params['state'] == 'absent':
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if not existing:
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pass
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else:
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# it exists, so we should delete it and mark changed.
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# return info about the cluster deleted
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results['cluster'] = existing
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if 'status' in existing and existing['status'] == "INACTIVE":
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results['changed'] = False
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else:
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if not module.check_mode:
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cluster_mgr.delete_cluster(module.params['name'])
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results['changed'] = True
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elif module.params['state'] == 'has_instances':
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if not existing:
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module.fail_json(msg="Cluster '" + module.params['name'] + " not found.")
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return
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# it exists, so we should delete it and mark changed.
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# return info about the cluster deleted
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delay = module.params['delay']
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repeat = module.params['repeat']
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time.sleep(delay)
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count = 0
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for i in range(repeat):
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existing = cluster_mgr.describe_cluster(module.params['name'])
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count = existing['registeredContainerInstancesCount']
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if count > 0:
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results['changed'] = True
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break
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time.sleep(delay)
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if count == 0 and i is repeat - 1:
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module.fail_json(msg="Cluster instance count still zero after " + str(repeat) + " tries of " + str(delay) + " seconds each.")
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return
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module.exit_json(**results)
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if __name__ == '__main__':
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main()
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