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+# ============LICENSE_START====================================================
+# org.onap.dcaegen2
+# =============================================================================
+# Copyright (c) 2017-2020 AT&T Intellectual Property. All rights reserved.
+# Copyright (c) 2020 Pantheon.tech. 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======================================================
+
+from cloudify import ctx
+from cloudify.decorators import operation
+from cloudify.exceptions import NonRecoverableError
+from dmaapplugin import DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, DMAAP_OWNER
+from dmaapplugin.dmaaputils import random_string
+from dmaapcontrollerif.dmaap_requests import DMaaPControllerHandle
+
+# Lifecycle operations for DMaaP Data Router feeds
+
+@operation
+def create_feed(**kwargs):
+ '''
+ Create a new data router feed
+ Expects "feed_name" to be set in node properties
+ If 'feed_name' is not set or is empty, generates a random one.
+ Allows "feed_version", "feed_description", "aspr_classification" and "useExisting" as optional properties
+ (Sets default values if not provided )
+ Sets instance runtime properties:
+ Note that 'useExisting' is a flag indicating whether DBCL will use existing feed if the feed already exists.
+ - "feed_id"
+ - "publish_url"
+ - "log_url"
+
+ '''
+ try:
+ # Make sure there's a feed_name
+ feed_name = ctx.node.properties.get("feed_name")
+ if not (feed_name and feed_name.strip()):
+ feed_name = random_string(12)
+
+ # Set defaults/placeholders for the optional properties for the feed
+ if "feed_version" in ctx.node.properties:
+ feed_version = ctx.node.properties["feed_version"]
+ else:
+ feed_version = "0.0"
+ if "feed_description" in ctx.node.properties:
+ feed_description = ctx.node.properties["feed_description"]
+ else:
+ feed_description = "No description provided"
+ if "aspr_classification" in ctx.node.properties:
+ aspr_classification = ctx.node.properties["aspr_classification"]
+ else:
+ aspr_classification = "unclassified"
+ if "useExisting" in ctx.node.properties:
+ useExisting = ctx.node.properties["useExisting"]
+ else:
+ useExisting = False
+
+ # Make the request to the controller
+ dmc = DMaaPControllerHandle(DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, ctx.logger)
+ ctx.logger.info("Attempting to create feed name {0}".format(feed_name))
+ f = dmc.create_feed(feed_name, feed_version, feed_description, aspr_classification, DMAAP_OWNER, useExisting)
+ f.raise_for_status()
+
+ # Capture important properties from the result
+ feed = f.json()
+ ctx.instance.runtime_properties["feed_id"] = feed["feedId"]
+ ctx.instance.runtime_properties["publish_url"] = feed["publishURL"]
+ ctx.instance.runtime_properties["log_url"] = feed["logURL"]
+ ctx.logger.info("Created feed name {0} with feed id {1}".format(feed_name, feed["feedId"]))
+
+ except Exception as e:
+ ctx.logger.error("Error creating feed: {er}".format(er=e))
+ raise NonRecoverableError(e)
+
+
+@operation
+def get_existing_feed(**kwargs):
+ '''
+ Find information for an existing data router feed
+ Expects "feed_id" to be set in node properties -- uniquely identifies the feed
+ Sets instance runtime properties:
+ - "feed_id"
+ - "publish_url"
+ - "log_url"
+ '''
+
+ try:
+ # Make the lookup request to the controller
+ dmc = DMaaPControllerHandle(DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, ctx.logger)
+ ctx.logger.info("DMaaPControllerHandle() returned")
+ feed_id_input = False
+ if "feed_id" in ctx.node.properties:
+ feed_id_input = True
+ f = dmc.get_feed_info(ctx.node.properties["feed_id"])
+ elif "feed_name" in ctx.node.properties:
+ feed_name = ctx.node.properties["feed_name"]
+ f = dmc.get_feed_info_by_name(feed_name)
+ if f is None:
+ ctx.logger.error("Not find existing feed with feed name {0}".format(feed_name))
+ raise ValueError("Not find existing feed with feed name " + feed_name)
+ else:
+ raise ValueError("Either feed_id or feed_name must be defined to get existing feed")
+
+ f.raise_for_status()
+
+ # Capture important properties from the result
+ feed = f.json()
+ feed_id = feed["feedId"]
+ ctx.instance.runtime_properties["feed_id"] = feed_id # Just to be consistent with newly-created node, above
+ ctx.instance.runtime_properties["publish_url"] = feed["publishURL"]
+ ctx.instance.runtime_properties["log_url"] = feed["logURL"]
+ if feed_id_input:
+ ctx.logger.info("Found existing feed with feed id {0}".format(ctx.node.properties["feed_id"]))
+ else:
+ ctx.logger.info("Found existing feed with feed name {0}".format(ctx.node.properties["feed_name"]))
+
+ except ValueError as e:
+ ctx.logger.error("{er}".format(er=e))
+ raise NonRecoverableError(e)
+ except Exception as e:
+ if feed_id_input:
+ ctx.logger.error("Error getting existing feed id {id}: {er}".format(id=ctx.node.properties["feed_id"],er=e))
+ else:
+ ctx.logger.error("Error getting existing feed name {name}: {er}".format(name=ctx.node.properties["feed_name"],er=e))
+ raise NonRecoverableError(e)
+
+
+@operation
+def delete_feed(**kwargs):
+ '''
+ Delete a feed
+ Expects "feed_id" to be set on the instance's runtime properties
+ '''
+ try:
+ # Make the lookup request to the controllerid=ctx.node.properties["feed_id"]
+ dmc = DMaaPControllerHandle(DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, ctx.logger)
+ f = dmc.delete_feed(ctx.instance.runtime_properties["feed_id"])
+ f.raise_for_status()
+ ctx.logger.info("Deleting feed id {0}".format(ctx.instance.runtime_properties["feed_id"]))
+
+ except Exception as e:
+ ctx.logger.error("Error deleting feed id {id}: {er}".format(id=ctx.instance.runtime_properties["feed_id"],er=e))
+ # don't raise a NonRecoverable error here--let the uninstall workflow continue