Initial version

Dockerfile

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+FROM python:3.5.1-alpine 
+MAINTAINER Chris Smith <chris87@gmail.com> 
+
+RUN \
+  pip install \
+    docker-py \
+    python-etcd
+
+COPY report.py /report.py
+CMD /report.py

report.py

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+#!/usr/bin/env python3
+
+from collections import defaultdict
+import docker 
+import etcd
+
+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():
+  name = container['Names'][0][1:]
+  image = container['Image']
+  labels = container['Labels']
+  addrs = {}
+  ports = defaultdict(dict)
+
+  for net_name, net_config in container['NetworkSettings']['Networks'].items():
+    addrs[net_name] = net_config['IPAddress']
+
+  for port in container['Ports']:
+    ports[port['Type']][port['PrivatePort']] = port['PublicPort'] if 'PublicPort' in port else 0
+
+  containers[name] = {
+    'image': image,
+    'labels': labels,
+    'net': {
+      'addr': addrs,
+      'ports': ports
+    }
+  }
+
+  for k, v in labels.items():
+    label_index[k][name] = v
+  for k, v in addrs.items():
+    network_index[k][name] = v
+
+try:
+  etcd_client.delete(prefix, recursive=True)
+except etcd.EtcdKeyNotFound:
+  pass
+
+for name, details in containers.items():
+  cprefix = prefix + '/containers/' + name
+  etcd_client.write(cprefix + '/image', details['image'])
+  for k, v in details['labels'].items():
+    etcd_client.write(cprefix + '/labels/' + k, v)
+  for k, v in details['net']['addr'].items():
+    etcd_client.write(cprefix + '/net/addr/' + k, v)
+  for proto, ports in details['net']['ports'].items():
+    for k, v in ports.items():
+      etcd_client.write(cprefix + '/net/ports/' + proto + '/' + str(k), v)
+
+for name, values in label_index.items():
+  lprefix = prefix + '/labels/' + name + '/'
+  for cont, value in values.items():
+    etcd_client.write(lprefix + cont, value)
+
+for name, values in network_index.items():
+  nprefix = prefix + '/networks/' + name + '/'
+  for cont, value in values.items():
+    etcd_client.write(nprefix + cont, value)
+
+print(containers)
+print(label_index)
+print(network_index)