Adding docker_image_facts (#3493)

* Adding docker_image_facts

* Fix github credentials

cloud/docker/docker_image_facts.py

@@ -0,0 +1,244 @@
+#!/usr/bin/python
+#
+# Copyright 2016 Red Hat | Ansible
+#
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+
+DOCUMENTATION = '''
+---
+module: docker_image_facts
+
+short_description: Inspect docker images
+
+version_added: "2.1.0"
+
+description:
+     - Provide one or more image names, and the module will inspect each, returning an array of inspection results.
+
+options:
+  name:
+    description:
+      - An image name or a list of image names. Name format will be name[:tag] or repository/name[:tag], where tag is
+        optional. If a tag is not provided, 'latest' will be used.
+    default: null
+    required: true
+
+extends_documentation_fragment:
+    - docker
+
+requirements:
+  - "python >= 2.6"
+  - "docker-py >= 1.7.0"
+  - "Docker API >= 1.20"
+
+authors:
+  - Chris Houseknecht (@chouseknecht)
+  - James Tanner (@jctanner)
+
+'''
+
+EXAMPLES = '''
+
+- name: Inspect a single image
+  docker_image_facts:
+    name: pacur/centos-7
+
+- name: Inspect multiple images
+  docker_iamge_facts:
+    name:
+      - pacur/centos-7
+      - sinatra
+'''
+
+RETURN = '''
+images:
+    description: Facts for the selected images.
+    returned: always
+    type: dict
+    sample:[
+        {
+            "Architecture": "amd64",
+            "Author": "",
+            "Comment": "",
+            "Config": {
+                "AttachStderr": false,
+                "AttachStdin": false,
+                "AttachStdout": false,
+                "Cmd": [
+                    "/etc/docker/registry/config.yml"
+                ],
+                "Domainname": "",
+                "Entrypoint": [
+                    "/bin/registry"
+                ],
+                "Env": [
+                    "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+                ],
+                "ExposedPorts": {
+                    "5000/tcp": {}
+                },
+                "Hostname": "e5c68db50333",
+                "Image": "c72dce2618dc8f7b794d2b2c2b1e64e0205ead5befc294f8111da23bd6a2c799",
+                "Labels": {},
+                "OnBuild": [],
+                "OpenStdin": false,
+                "StdinOnce": false,
+                "Tty": false,
+                "User": "",
+                "Volumes": {
+                    "/var/lib/registry": {}
+                },
+                "WorkingDir": ""
+            },
+            "Container": "e83a452b8fb89d78a25a6739457050131ca5c863629a47639530d9ad2008d610",
+            "ContainerConfig": {
+                "AttachStderr": false,
+                "AttachStdin": false,
+                "AttachStdout": false,
+                "Cmd": [
+                    "/bin/sh",
+                    "-c",
+                    "#(nop) CMD [\"/etc/docker/registry/config.yml\"]"
+                ],
+                "Domainname": "",
+                "Entrypoint": [
+                    "/bin/registry"
+                ],
+                "Env": [
+                    "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+                ],
+                "ExposedPorts": {
+                    "5000/tcp": {}
+                },
+                "Hostname": "e5c68db50333",
+                "Image": "c72dce2618dc8f7b794d2b2c2b1e64e0205ead5befc294f8111da23bd6a2c799",
+                "Labels": {},
+                "OnBuild": [],
+                "OpenStdin": false,
+                "StdinOnce": false,
+                "Tty": false,
+                "User": "",
+                "Volumes": {
+                    "/var/lib/registry": {}
+                },
+                "WorkingDir": ""
+            },
+            "Created": "2016-03-08T21:08:15.399680378Z",
+            "DockerVersion": "1.9.1",
+            "GraphDriver": {
+                "Data": null,
+                "Name": "aufs"
+            },
+            "Id": "53773d8552f07b730f3e19979e32499519807d67b344141d965463a950a66e08",
+            "Name": "registry:2",
+            "Os": "linux",
+            "Parent": "f0b1f729f784b755e7bf9c8c2e65d8a0a35a533769c2588f02895f6781ac0805",
+            "RepoDigests": [],
+            "RepoTags": [
+                "registry:2"
+            ],
+            "Size": 0,
+            "VirtualSize": 165808884
+        }
+    ]
+'''
+
+from ansible.module_utils.docker_common import *
+
+try:
+    from docker import auth
+    from docker import utils
+except ImportError:
+    # missing docker-py handled in docker_common
+    pass
+
+class ImageManager(DockerBaseClass):
+
+    def __init__(self, client, results):
+
+        super(ImageManager, self).__init__()
+
+        self.client = client
+        self.results = results
+        self.name = self.client.module.params.get('name')
+        self.log("Gathering facts for images: %s" % (str(self.name)))
+
+        if self.name:
+            self.results['images'] = self.get_facts()
+        else:
+            self.results['images'] = self.get_all_images()
+
+    def fail(self, msg):
+        self.client.fail(msg)
+
+    def get_facts(self):
+        '''
+        Lookup and inspect each image name found in the names parameter.
+
+        :returns array of image dictionaries
+        '''
+
+        results = []
+
+        names = self.name
+        if not isinstance(names, list):
+            names = [names]
+
+        for name in names:
+            repository, tag = utils.parse_repository_tag(name)
+            if not tag:
+                tag = 'latest'
+            self.log('Fetching image %s:%s' % (repository, tag))
+            image = self.client.find_image(name=repository, tag=tag)
+            if image:
+                results.append(image)
+        return results
+
+    def get_all_images(self):
+        results = []
+        images = self.client.images()
+        for image in images:
+            try:
+                inspection = self.client.inspect_image(image['Id'])
+            except Exception, exc:
+                self.fail("Error inspecting image %s - %s" % (image['Id'], str(exc)))
+            results.append(inspection)
+        return results
+
+
+def main():
+    argument_spec = dict(
+        name=dict(type='list'),
+        )
+
+    client = AnsibleDockerClient(
+        argument_spec=argument_spec
+    )
+
+    results = dict(
+        changed=False,
+        images=[]
+    )
+
+    ImageManager(client, results)
+    client.module.exit_json(**results)
+
+
+# import module snippets
+from ansible.module_utils.basic import *
+
+if __name__ == '__main__':
+    main()