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- #!/usr/bin/env python3
-
- from collections import defaultdict
- import docker
- import etcd
-
-
- def etcd_put(client, prefix, obj):
- for key, value in obj.items():
- new_prefix = "%s/%s" % (prefix, key)
-
- if isinstance(value, dict):
- etcd_put(client, new_prefix, value)
- else:
- client.write(new_prefix, str(value))
-
-
- def get_addresses(container):
- return {k: v['IPAddress'] for k, v in container['NetworkSettings']['Networks'].items()}
-
-
- def get_ports(container):
- ports = defaultdict(dict)
- for port in container['Ports']:
- ports[port['Type']][port['PrivatePort']] = port['PublicPort'] if 'PublicPort' in port else 0
- return ports
-
-
- docker_client = docker.Client(base_url='unix://var/run/docker.sock')
- etcd_client = etcd.Client(host='etcd', port=4001)
- prefix = '/docker'
-
- containers = {}
- label_index = defaultdict(dict)
- network_index = defaultdict(dict)
-
- for container in docker_client.containers():
- containers[container['Names'][0][1:]] = {
- 'image': container['Image'],
- 'labels': container['Labels'],
- 'net': {
- 'addr': get_addresses(container),
- 'ports': get_ports(container)
- }
- }
-
- for name, details in containers.items():
- for k, v in details['labels'].items():
- label_index[k][name] = v
- for k, v in details['net']['addr'].items():
- network_index[k][name] = v
-
- try:
- etcd_client.delete(prefix, recursive=True)
- except etcd.EtcdKeyNotFound:
- pass
-
- etcd_put(etcd_client, prefix + '/containers', containers)
- etcd_put(etcd_client, prefix + '/labels', label_index)
- etcd_put(etcd_client, prefix + '/networks', network_index)
-
- print(containers)
- print(label_index)
- print(network_index)
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