Merge pull request #249 from kurochan/docker-daemon

[docker-daemon] Add recipe and tests

recipes/docker_daemon.rb

@@ -0,0 +1,57 @@
+include_recipe 'datadog::dd-agent'
+
+# Build a data structure with configuration.
+# @see https://www.datadoghq.com/2014/06/monitor-docker-datadog/
+# @example
+#   node.override['datadog']['docker_daemon']['init_config'] = [
+#     {
+#       docker_root: '/',
+#       socket_timeout: 10,
+#       tls: false,
+#       tls_client_cert: '/path/to/client-cert.pem',
+#       tls_client_key: '/path/to/client-key.pem',
+#       tls_cacert: '/path/to/ca.pem',
+#       tls_verify: true
+#     }
+#   ]
+#   node.override['datadog']['docker_daemon']['instances'] = [
+#     {
+#       url: 'unix://var/run/docker.sock',
+#       tags: [
+#         'toto',
+#         'tata'
+#       ],
+#       include: [
+#         'docker_image:ubuntu',
+#         'docker_image:debian'
+#       ],
+#       exclude: [
+#         '.*'
+#       ],
+#       performance_tags: [
+#         'container_name',
+#         'image_name',
+#         'image_tag',
+#         'docker_image'
+#       ],
+#       container_tags: [
+#         'image_name',
+#         'image_tag',
+#         'docker_image'
+#       ],
+#       collect_labels_as_tags: [
+#         'com.docker.compose.service',
+#         'com.docker.compose.project'
+#       ],
+#       ecs_tags: true,
+#       collect_events: true,
+#       collect_container_size: false,
+#       collect_image_size: false,
+#       collect_images_stats: false
+#     }
+#   ]
+
+datadog_monitor 'docker_daemon' do
+  init_config node['datadog']['docker_daemon']['init_config']
+  instances node['datadog']['docker_daemon']['instances']
+end

spec/integrations/docker_daemon_spec.rb

@@ -0,0 +1,110 @@
+describe 'datadog::docker_daemon' do
+  expected_yaml = <<-EOF
+    init_config:
+      docker_root: /
+      timeout: 10
+      tls: false
+      tls_client_cert: /path/to/client-cert.pem
+      tls_client_key: /path/to/client-key.pem
+      tls_cacert: /path/to/ca.pem
+      tls_verify: true
+    instances:
+      - url: unix://var/run/docker.sock
+        tags:
+          - toto
+          - tata
+        include:
+          - docker_image:ubuntu
+          - docker_image:debian
+        exclude:
+          - .*
+        performance_tags:
+          - container_name
+          - image_name
+          - image_tag
+          - docker_image
+        container_tags:
+          - image_name
+          - image_tag
+          - docker_image
+        collect_labels_as_tags:
+          - com.docker.compose.service
+          - com.docker.compose.project
+        ecs_tags: true
+        collect_events: true
+        collect_container_size: false
+        collect_image_size: false
+        collect_images_stats: false
+  EOF
+
+  cached(:chef_run) do
+    ChefSpec::SoloRunner.new(step_into: ['datadog_monitor']) do |node|
+      node.automatic['languages'] = { 'python' => { 'version' => '2.7.2' } }
+
+      node.set['datadog'] = {
+        'api_key' => 'someapikey',
+        'docker_daemon' => {
+          init_config: {
+            docker_root: '/',
+            timeout: 10,
+            tls: false,
+            tls_client_cert: '/path/to/client-cert.pem',
+            tls_client_key: '/path/to/client-key.pem',
+            tls_cacert: '/path/to/ca.pem',
+            tls_verify: true
+          },
+          instances: [
+            {
+              url: 'unix://var/run/docker.sock',
+              tags: [
+                'toto',
+                'tata'
+              ],
+              include: [
+                'docker_image:ubuntu',
+                'docker_image:debian'
+              ],
+              exclude: [
+                '.*'
+              ],
+              performance_tags: [
+                'container_name',
+                'image_name',
+                'image_tag',
+                'docker_image'
+              ],
+              container_tags: [
+                'image_name',
+                'image_tag',
+                'docker_image'
+              ],
+              collect_labels_as_tags: [
+                'com.docker.compose.service',
+                'com.docker.compose.project'
+              ],
+              ecs_tags: true,
+              collect_events: true,
+              collect_container_size: false,
+              collect_image_size: false,
+              collect_images_stats: false
+            }
+          ]
+        }
+      }
+    end.converge(described_recipe)
+  end
+
+  subject { chef_run }
+
+  it_behaves_like 'datadog-agent'
+
+  it { is_expected.to include_recipe('datadog::dd-agent') }
+
+  it { is_expected.to add_datadog_monitor('docker_daemon') }
+
+  it 'renders expected YAML config file' do
+    expect(chef_run).to render_file('/etc/dd-agent/conf.d/docker_daemon.yaml').with_content { |content|
+      expect(YAML.load(content).to_json).to be_json_eql(YAML.load(expected_yaml).to_json)
+    }
+  end
+end

templates/default/docker_daemon.yaml.erb

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+# Generated by Chef, local modifications will be overwritten
+
+<%= JSON.parse(({ 'init_config' => @init_config, 'instances' => @instances}).to_json).to_yaml %>