Fixing/cleaning up kubernetes submission

1) Removed kubectl functionality. We'll move that into a different
   module in the future. Also removed post/put/patch/delete options,
   as they are not Ansible best practice.
2) Expanded error handling in areas where tracebacks were most likely,
   based on bad data from users, etc.
3) Added an 'insecure' option and made the password param optional, to
   enable the use of the local insecure port.
4) Allowed the data (both inline and from the file) to support multiple
   items via a list. This is common in YAML files where mutliple docs
   are used to create/remove multiple resources in one shot.
5) General bug fixing.

clustering/kubernetes.py

@@ -28,9 +28,6 @@ description:
         Only supports HTTP Basic Auth
         Only supports 'strategic merge' for update, http://goo.gl/fCPYxT
         SSL certs are not working, use 'validate_certs=off' to disable
-      This module can mimic the 'kubectl' Kubernetes client for commands
-      such as 'get', 'cluster-info', and 'version'. This is useful if you
-      want to fetch full object details for existing Kubernetes resources.
 options:
   api_endpoint:
     description:
@@ -40,12 +37,14 @@ options:
     aliases: ["endpoint"]
   inline_data:
     description:
-      - The Kubernetes YAML data to send to the API I(endpoint).
+      - The Kubernetes YAML data to send to the API I(endpoint). This option is
+        mutually exclusive with C('file_reference').
     required: true
     default: null
   file_reference:
     description:
       - Specify full path to a Kubernets YAML file to send to API I(endpoint).
+        This option is mutually exclusive with C('inline_data').
     required: false
     default: null
   certificate_authority_data:
@@ -56,53 +55,27 @@ options:
         'match_hostname' that can match the IP address against the CA data.
     required: false
     default: null
-  kubectl_api_versions:
-    description:
-      - Mimic the 'kubectl api-versions' command, values are ignored.
-    required: false
-    default: null
-  kubectl_cluster_info:
-    description:
-      - Mimic the 'kubectl cluster-info' command, values are ignored.
-    required: false
-    default: null
-  kubectl_get:
-    description:
-      - Mimic the 'kubectl get' command. Specify the object(s) to fetch such
-        as 'pods' or 'replicationcontrollers/mycontroller'. It does not
-        support shortcuts (e.g. 'po', 'rc', 'svc').
-    required: false
-    default: null
-  kubectl_namespace:
-    description:
-      - Specify the namespace to use for 'kubectl' commands.
-    required: false
-    default: "default"
-  kubectl_version:
-    description:
-      - Mimic the 'kubectl version' command, values are ignored.
-    required: false
-    default: null
   state:
     description:
-      - The desired action to take on the Kubernetes data, or 'kubectl' to
+      - The desired action to take on the Kubernetes data.
-        mimic some kubectl commands.
     required: true
     default: "present"
-    choices: ["present", "post", "absent", "delete", "update", "patch",
+    choices: ["present", "absent", "update", "replace"]
-              "replace", "put", "kubectl"]
+  password:
-  url_password:
     description:
-      - The HTTP Basic Auth password for the API I(endpoint).
+      - The HTTP Basic Auth password for the API I(endpoint). This should be set
-    required: true
+        unless using the C('insecure') option.
     default: null
-    aliases: ["password", "api_password"]
+  username:
-  url_username:
     description:
-      - The HTTP Basic Auth username for the API I(endpoint).
+      - The HTTP Basic Auth username for the API I(endpoint). This should be set
-    required: true
+        unless using the C('insecure') option.
     default: "admin"
-    aliases: ["username", "api_username"]
+  insecure:
+    description:
+      - "Reverts the connection to using HTTP instead of HTTPS. This option should
+        only be used when execuing the M('kubernetes') module local to the Kubernetes
+        cluster using the insecure local port (locahost:8080 by default)."
   validate_certs:
     description:
       - Enable/disable certificate validation. Note that this is set to
@@ -110,7 +83,6 @@ options:
         hostname matching (exists in >= python3.5.0).
     required: false
     default: false
-    choices: BOOLEANS
 
 author: "Eric Johnson (@erjohnso) <erjohnso@google.com>"
 '''
@@ -120,8 +92,8 @@ EXAMPLES = '''
 - name: Create a kubernetes namespace
   kubernetes:
     api_endpoint: 123.45.67.89
-    url_username: admin
+    username: admin
-    url_password: redacted
+    password: redacted
     inline_data:
       kind: Namespace
       apiVersion: v1
@@ -139,28 +111,19 @@ EXAMPLES = '''
 - name: Create a kubernetes namespace
   kubernetes:
     api_endpoint: 123.45.67.89
-    url_username: admin
+    username: admin
-    url_password: redacted
+    password: redacted
     file_reference: /path/to/create_namespace.yaml
     state: present
 
-# Fetch info about the Kubernets cluster with a fake 'kubectl' command.
+# Do the same thing, but using the insecure localhost port
-- name: Look up cluster info
+- name: Create a kubernetes namespace
   kubernetes:
     api_endpoint: 123.45.67.89
-    url_username: admin
+    insecure: true
-    url_password: redacted
+    file_reference: /path/to/create_namespace.yaml
-    kubectl_cluster_info: 1
+    state: present
-    state: kubectl
 
-# Fetch info about the Kubernets pods with a fake 'kubectl' command.
-- name: Look up pods
-  kubernetes:
-    api_endpoint: 123.45.67.89
-    url_username: admin
-    url_password: redacted
-    kubectl_get: pods
-    state: kubectl
 '''
 
 RETURN = '''
@@ -259,6 +222,7 @@ USER_AGENT = "ansible-k8s-module/0.0.1"
 # - Set 'required=true' for certificate_authority_data and ensure that
 #   ansible's SSLValidationHandler.get_ca_certs() can pick up this CA cert
 # - Set 'required=true' for the validate_certs param.
+
 def decode_cert_data(module):
     return
     d = module.params.get("certificate_authority_data")
@@ -270,75 +234,70 @@ def api_request(module, url, method="GET", headers=None, data=None):
     body = None
     if data:
         data = json.dumps(data)
-    response, info = fetch_url(module, url, method=method, headers=headers,
+    response, info = fetch_url(module, url, method=method, headers=headers, data=data)
-                               data=data)
+    if int(info['status']) == -1:
+        module.fail_json(msg="Failed to execute the API request: %s" % info['msg'], url=url, method=method, headers=headers)
     if response is not None:
         body = json.loads(response.read())
     return info, body
 
 
-def k8s_kubectl_get(module, url):
+def k8s_create_resource(module, url, data):
-    req = module.params.get("kubectl_get")
+    info, body = api_request(module, url, method="POST", data=data, headers={"Content-Type": "application/json"})
-    info, body = api_request(module, url + "/" + req)
+    if info['status'] == 409:
+        name = data["metadata"].get("name", None)
+        info, body = api_request(module, url + "/" + name)
         return False, body
+    elif info['status'] >= 400:
+        module.fail_json(msg="failed to create the resource: %s" % info['msg'], url=url)
+    return True, body
 
 
 def k8s_delete_resource(module, url, data):
-    name = None
+    name = data.get('metadata', {}).get('name')
-    if 'metadata' in data:
-        name = data['metadata'].get('name')
     if name is None:
-        module.fail_json(msg="Missing a named resource in object metadata")
+        module.fail_json(msg="Missing a named resource in object metadata when trying to remove a resource")
-    url = url + '/' + name
 
+    url = url + '/' + name
     info, body = api_request(module, url, method="DELETE")
     if info['status'] == 404:
-        return False, {}
+        return False, "Resource name '%s' already absent" % name
-    if info['status'] == 200:
+    elif info['status'] >= 400:
-        return True, body
+        module.fail_json(msg="failed to delete the resource '%s': %s" % (name, info['msg']), url=url)
-    module.fail_json(msg="%s: fetching URL '%s'" % (info['msg'], url))
+    return True, "Successfully deleted resource name '%s'" % name
-
-
-def k8s_create_resource(module, url, data):
-    info, body = api_request(module, url, method="POST", data=data)
-    if info['status'] == 409:
-        name = data["metadata"].get("name", None)
-        info, body = api_request(module, url + "/" + name)
-        return False, body
-    return True, body
 
 
 def k8s_replace_resource(module, url, data):
-    name = None
+    name = data.get('metadata', {}).get('name')
-    if 'metadata' in data:
-        name = data['metadata'].get('name')
     if name is None:
-        module.fail_json(msg="Missing a named resource in object metadata")
+        module.fail_json(msg="Missing a named resource in object metadata when trying to replace a resource")
-    url = url + '/' + name
 
-    info, body = api_request(module, url, method="PUT", data=data)
+    headers = {"Content-Type": "application/json"}
+    url = url + '/' + name
+    info, body = api_request(module, url, method="PUT", data=data, headers=headers)
     if info['status'] == 409:
         name = data["metadata"].get("name", None)
         info, body = api_request(module, url + "/" + name)
         return False, body
+    elif info['status'] >= 400:
+        module.fail_json(msg="failed to replace the resource '%s': %s" % (name, info['msg']), url=url)
     return True, body
 
 
 def k8s_update_resource(module, url, data):
-    name = None
+    name = data.get('metadata', {}).get('name')
-    if 'metadata' in data:
-        name = data['metadata'].get('name')
     if name is None:
-        module.fail_json(msg="Missing a named resource in object metadata")
+        module.fail_json(msg="Missing a named resource in object metadata when trying to update a resource")
-    url = url + '/' + name
 
     headers = {"Content-Type": "application/strategic-merge-patch+json"}
-    info, body = api_request(module, url, method="PATCH", data=data,
+    url = url + '/' + name
-                             headers=headers)
+    info, body = api_request(module, url, method="PATCH", data=data, headers=headers)
     if info['status'] == 409:
         name = data["metadata"].get("name", None)
         info, body = api_request(module, url + "/" + name)
         return False, body
+    elif info['status'] >= 400:
+        module.fail_json(msg="failed to update the resource '%s': %s" % (name, info['msg']), url=url)
     return True, body
 
 
@@ -347,97 +306,81 @@ def main():
         argument_spec=dict(
             http_agent=dict(default=USER_AGENT),
 
-            url_username=dict(default="admin"),
+            username=dict(default="admin"),
-            url_password=dict(required=True, no_log=True),
+            password=dict(default="", no_log=True),
             force_basic_auth=dict(default="yes"),
-            validate_certs=dict(default=False, choices=BOOLEANS),
+            validate_certs=dict(default=False, type='bool'),
             certificate_authority_data=dict(required=False),
-
+            insecure=dict(default=False, type='bool'),
-            # fake 'kubectl' commands
-            kubectl_api_versions=dict(required=False),
-            kubectl_cluster_info=dict(required=False),
-            kubectl_get=dict(required=False),
-            kubectl_namespace=dict(required=False, default="default"),
-            kubectl_version=dict(required=False),
-
-            # k8s API module variables
             api_endpoint=dict(required=True),
             file_reference=dict(required=False),
             inline_data=dict(required=False),
-            state=dict(default="present",
+            state=dict(default="present", choices=["present", "absent", "update", "replace"])
-                       choices=["present", "post",
+        ),
-                                "absent", "delete",
+        mutually_exclusive = (('file_reference', 'inline_data'), ('username', 'insecure'), ('password', 'insecure')),
-                                "update", "put",
+        required_one_of = (('file_reference', 'inline_data'),),
-                                "replace", "patch",
-                                "kubectl"])
-        )
     )
 
     decode_cert_data(module)
 
-    changed = False
+    api_endpoint = module.params.get('api_endpoint')
-    data = module.params.get('inline_data', {})
-    if not data:
-        dfile = module.params.get('file_reference')
-        if dfile:
-            f = open(dfile, "r")
-            data = yaml.load(f)
-
-    endpoint = "https://" + module.params.get('api_endpoint')
-    url = endpoint
-
-    namespace = "default"
-    if data and 'metadata' in data:
-        namespace = data['metadata'].get('namespace', "default")
-        kind = data['kind'].lower()
-        url = endpoint + KIND_URL[kind]
-        url = url.replace("{namespace}", namespace)
-
-    # check for 'kubectl' commands
-    kubectl_api_versions = module.params.get('kubectl_api_versions')
-    kubectl_cluster_info = module.params.get('kubectl_cluster_info')
-    kubectl_get = module.params.get('kubectl_get')
-    kubectl_namespace = module.params.get('kubectl_namespace')
-    kubectl_version = module.params.get('kubectl_version')
-
     state = module.params.get('state')
-    if state in ['present', 'post']:
+    insecure = module.params.get('insecure')
-        changed, body = k8s_create_resource(module, url, data)
+    inline_data = module.params.get('inline_data')
-        module.exit_json(changed=changed, api_response=body)
+    file_reference = module.params.get('file_reference')
 
-    if state in ['absent', 'delete']:
+    if inline_data:
-        changed, body = k8s_delete_resource(module, url, data)
+        data = inline_data
-        module.exit_json(changed=changed, api_response=body)
+    else:
+        try:
+            f = open(file_reference, "r")
+            data = [x for x in yaml.load_all(f)]
+            f.close()
+            if not data:
+                module.fail_json(msg="No valid data could be found.")
+        except:
+            module.fail_json(msg="The file '%s' was not found or contained invalid YAML/JSON data" % file_reference)
 
-    if state in ['replace', 'put']:
+    # set the transport type and build the target endpoint url
-        changed, body = k8s_replace_resource(module, url, data)
+    transport = 'https'
-        module.exit_json(changed=changed, api_response=body)
+    if insecure:
+        transport = 'http'
 
-    if state in ['update', 'patch']:
+    target_endpoint = "%s://%s" % (transport, api_endpoint)
-        changed, body = k8s_update_resource(module, url, data)
-        module.exit_json(changed=changed, api_response=body)
 
-    if state == 'kubectl':
+    body = []
-        kurl = url + "/api/v1/namespaces/" + kubectl_namespace
+    changed = False
-        if kubectl_get:
-            if kubectl_get.startswith("namespaces"):
-                kurl = url + "/api/v1"
-            changed, body = k8s_kubectl_get(module, kurl)
-            module.exit_json(changed=changed, api_response=body)
-        if kubectl_version:
-            info, body = api_request(module, url + "/version")
-            module.exit_json(changed=False, api_response=body)
-        if kubectl_api_versions:
-            info, body = api_request(module, url + "/api")
-            module.exit_json(changed=False, api_response=body)
-        if kubectl_cluster_info:
-            info, body = api_request(module, url +
-                                     "/api/v1/namespaces/kube-system"
-                                     "/services?labelSelector=kubernetes"
-                                     ".io/cluster-service=true")
-            module.exit_json(changed=False, api_response=body)
 
-    module.fail_json(msg="Invalid state: '%s'" % state)
+    # make sure the data is a list
+    if not isinstance(data, list):
+        data = [ data ]
+
+    for item in data:
+        namespace = "default"
+        if item and 'metadata' in item:
+            namespace = item.get('metadata', {}).get('namespace', "default")
+            kind = item.get('kind', '').lower()
+            try:
+                url = target_endpoint + KIND_URL[kind]
+            except KeyError:
+                module.fail_json("invalid resource kind specified in the data: '%s'" % kind)
+            url = url.replace("{namespace}", namespace)
+        else:
+            url = target_endpoint
+
+        if state == 'present':
+            item_changed, item_body = k8s_create_resource(module, url, item)
+        elif state == 'absent':
+            item_changed, item_body = k8s_delete_resource(module, url, item)
+        elif state == 'replace':
+            item_changed, item_body = k8s_replace_resource(module, url, item)
+        elif state == 'update':
+            item_changed, item_body = k8s_update_resource(module, url, item)
+
+        changed |= item_changed
+        body.append(item_body)
+
+    module.exit_json(changed=changed, api_response=body)
 
 
 # import module snippets