Add seed code for DMaaP plugin

Change-Id: I8c7a9c432badd3052a571ed87b9b580760b376e6
Issue-Id: CCSDK-65
Signed-off-by: Jack Lucas <jflucas@research.att.com>

1 files changed, 256 insertions, 0 deletions

diff --git a/dmaap/dmaapcontrollerif/dmaap_requests.py b/dmaap/dmaapcontrollerif/dmaap_requests.py
new file mode 100644
index 0000000..eb6fe1b
--- /dev/null
+++ b/dmaap/dmaapcontrollerif/dmaap_requests.py
@@ -0,0 +1,256 @@
+# ============LICENSE_START====================================================
+# org.onap.ccsdk
+# =============================================================================
+# Copyright (c) 2017 AT&T Intellectual Property. All rights reserved.
+# =============================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============LICENSE_END======================================================
+
+import requests
+
+### "Constants"
+FEEDS_PATH = '/feeds'
+PUBS_PATH = '/dr_pubs'
+SUBS_PATH = '/dr_subs'
+TOPICS_PATH = '/topics'
+CLIENTS_PATH = '/mr_clients'
+LOCATIONS_PATH = '/dcaeLocations'
+
+class DMaaPControllerHandle(object):
+    '''
+    A simple wrapper class to map DMaaP bus controller API calls into operations supported by the requests module
+    '''
+
+    def __init__(self, api_url, user, password, logger,
+                 feeds_path = FEEDS_PATH,
+                 pubs_path = PUBS_PATH,
+                 subs_path = SUBS_PATH,
+                 topics_path = TOPICS_PATH,
+                 clients_path = CLIENTS_PATH):
+        '''
+        Constructor
+        '''
+        self.api_url = api_url        # URL for the root of the Controller resource tree, no trailing "/"
+        self.auth = (user, password)  # user name and password for HTTP basic auth
+        self.logger = logger
+        self.feeds_path = feeds_path
+        self.pubs_path = pubs_path
+        self.subs_path = subs_path
+        self.topics_path = topics_path
+        self.clients_path = clients_path
+
+
+    ### INTERNAL FUNCTIONS ###
+
+    def _make_url(self, path):
+        '''
+        Make a full URL given the path relative to the root
+        '''
+        if not path.startswith('/'):
+            path = '/' + path
+
+        return self.api_url + path
+
+    def _get_resource(self, path):
+        '''
+        Get the DMaaP resource at path, where path is relative to the root.
+        '''
+        url = self._make_url(path)
+        self.logger.info("Querying URL: {0}".format(url))
+        return requests.get(url, auth=self.auth)
+
+    def _create_resource(self, path, resource_content):
+        '''
+        Create a DMaaP resource by POSTing to the resource collection
+        identified by path (relative to root), using resource_content as the body of the post
+        '''
+        url = self._make_url(path)
+        self.logger.info("Posting to URL: {0} with body: {1}".format(url, resource_content))
+        return requests.post(url, auth=self.auth, json=resource_content)
+
+    def _delete_resource(self, path):
+        '''
+        Delete the DMaaP resource at path, where path is relative to the root.
+        '''
+        url = self._make_url(path)
+        self.logger.info("Deleting URL: {0}".format(url))
+        return requests.delete(url, auth=self.auth)
+
+    ### PUBLIC API ###
+
+    # Data Router Feeds
+    def create_feed(self, name, version=None, description=None, aspr_class=None, owner=None):
+        '''
+        Create a DMaaP data router feed with the given feed name
+        and (optionally) feed version, feed description, ASPR classification,
+        and owner
+        '''
+        feed_definition = {'feedName' : name}
+        if version:
+            feed_definition['feedVersion'] = version
+        if description:
+            feed_definition['feedDescription'] = description
+        if aspr_class:
+            feed_definition['asprClassification'] = aspr_class
+        if owner:
+            feed_definition['owner'] = owner
+
+        return self._create_resource(self.feeds_path, feed_definition)
+
+    def get_feed_info(self, feed_id):
+        '''
+        Get the representation of the DMaaP data router feed whose feed id is feed_id.
+        '''
+        return self._get_resource("{0}/{1}".format(self.feeds_path, feed_id))
+
+    def delete_feed(self, feed_id):
+        '''
+        Delete the DMaaP data router feed whose feed id is feed_id.
+        '''
+        return self._delete_resource("{0}/{1}".format(self.feeds_path, feed_id))
+
+    # Data Router Publishers
+    def add_publisher(self, feed_id, location, username, password, status=None):
+        '''
+        Add a publisher to feed feed_id at location location with user, pass, and status
+        '''
+        publisher_definition = {
+            'feedId' : feed_id,
+            'dcaeLocationName' : location,
+            'username' : username,
+            'userpwd' : password
+        }
+
+        if status:
+            publisher_definition['status'] = status
+
+        return self._create_resource(self.pubs_path, publisher_definition)
+
+    def get_publisher_info(self, pub_id):
+        '''
+        Get the representation of the DMaaP data router publisher whose publisher id is pub_id
+        '''
+        return self._get_resource("{0}/{1}".format(self.pubs_path, pub_id))
+
+    def delete_publisher(self, pub_id):
+        '''
+        Delete the DMaaP data router publisher whose publisher id is id.
+        '''
+        return self._delete_resource("{0}/{1}".format(self.pubs_path, pub_id))
+
+
+    # Data Router SUbscrihers
+    def add_subscriber(self, feed_id, location, delivery_url, username, password, status=None):
+        '''
+        Add a publisher to feed feed_id at location location with user, pass, and status
+        '''
+        subscriber_definition = {
+            'feedId' : feed_id,
+            'dcaeLocationName' : location,
+            'deliveryURL' : delivery_url,
+            'username' : username,
+            'userpwd' : password
+        }
+
+        if status:
+            subscriber_definition['status'] = status
+
+        return self._create_resource(self.subs_path, subscriber_definition)
+
+    def get_subscriber_info(self, sub_id):
+        '''
+        Get the representation of the DMaaP data router subscriber whose subscriber id is sub_id
+        '''
+        return self._get_resource("{0}/{1}".format(self.subs_path, sub_id))
+
+    def delete_subscriber(self, sub_id):
+        '''
+        Delete the DMaaP data router subscriber whose subscriber id is sub_id.
+        '''
+        return self._delete_resource("{0}/{1}".format(self.subs_path, sub_id))
+
+    # Message router topics
+    def create_topic(self, name, description = None, txenable = None, owner = None, replication_case = None, global_mr_url = None):
+        '''
+        Create a message router topic with the topic name 'name' and optionally the topic_description
+        'description', the 'txenable' flag and the topic owner 'owner'.
+        '''
+        topic_definition = {'topicName' : name};
+        if description:
+            topic_definition['topicDescription'] = description
+        if owner:
+            topic_definition['owner'] = owner
+        if txenable != None:                            # It's a boolean!
+            topic_definition['txenable'] = txenable
+        if replication_case:
+            topic_definition['replicationCase'] = replication_case
+        if global_mr_url:
+            topic_definition['globalMrURL'] = global_mr_url
+
+        return self._create_resource(self.topics_path, topic_definition)
+
+    def get_topic_info(self, fqtn):
+        '''
+        Get information about the topic whose fully-qualified name is 'fqtn'
+        '''
+        return self._get_resource("{0}/{1}".format(self.topics_path, fqtn))
+
+    def delete_topic(self, fqtn):
+        '''
+        Delete the topic whose fully qualified name is 'fqtn'
+        '''
+        return self._delete_resource("{0}/{1}".format(self.topics_path, fqtn))
+
+    # Message route clients (publishers and subscribers
+    def create_client(self, fqtn, location, client_role, actions):
+        '''
+        Creates a client authorized to access the topic with fully-qualified name 'fqtn',
+        from the location 'location', using the AAF client role 'client_role'.  The
+        client is authorized to perform actions in the list 'actions'.  (Valid
+        values are 'pub', 'sub', and 'view'
+        '''
+        client_definition = {
+            'fqtn' : fqtn,
+            'dcaeLocationName' : location,
+            'clientRole' : client_role,
+            'action' : actions
+        }
+        return self._create_resource(self.clients_path, client_definition)
+
+    def get_client_info(self, client_id):
+        '''
+        Get client information for the client whose client ID is 'client_id'
+        '''
+        return self._get_resource("{0}/{1}".format(self.clients_path, client_id))
+
+    def delete_client(self, client_id):
+        '''
+        Delete the client whose client ID is 'client_id'
+        '''
+        return self._delete_resource("{0}/{1}".format(self.clients_path, client_id))
+
+    def get_dcae_locations(self, dcae_layer):
+        '''
+        Get the list of location names known to the DMaaP bus controller
+        whose "dcaeLayer" property matches dcae_layer and whose status is "VALID".
+        "dcaeLayer" is "opendcae-central" for central sites.
+        '''
+        # Do these as a separate step so things like 404 get reported precisely
+        locations = self._get_resource(LOCATIONS_PATH)
+        locations.raise_for_status()
+
+        # pull out location names for VALID locations with matching dcae_layer
+        return  map(lambda l: l["dcaeLocationName"],
+                    filter(lambda i : (i['dcaeLayer'] == dcae_layer and i['status'] == 'VALID'),
+                       locations.json()))
+