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# ============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======================================================
from cloudify import ctx
from cloudify.decorators import operation
from cloudify.exceptions import NonRecoverableError
from dmaapplugin import DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, CONSUL_HOST
from dmaaputils import random_string
from dmaapcontrollerif.dmaap_requests import DMaaPControllerHandle
from consulif.consulif import ConsulHandle
# Lifecycle operations for DMaaP Data Router
# publish and subscribe relationships
@operation
def add_dr_publisher(**kwargs):
'''
Sets up the source of the publishes_relationship as a publisher to the feed that
is the target of the relationship
Assumes target (the feed) has the following runtime properties set
- feed_id
- log_url
- publish_url
Assumes source (the publisher) has a runtime property whose name matches the node name of the feed.
This is a dictionary containing one property:
- location (the dcaeLocationName to pass when adding the publisher to the feed)
Generates a user name and password that the publisher will need to use when publishing
Adds the following properties to the dictionary above:
- publish_url
- log_url
- username
- password
'''
try:
# Make sure we have a name under which to store DMaaP configuration
# Check early so we don't needlessly create DMaaP entities
if 'service_component_name' not in ctx.source.instance.runtime_properties:
raise Exception("Source node does not have 'service_component_name' in runtime_properties")
target_feed = ctx.target.node.id
ctx.logger.info("Attempting to add publisher {0} to feed {1}".format(ctx.source.node.id, target_feed))
# Set up the parameters for the add_publisher request to the DMaaP bus controller
feed_id = ctx.target.instance.runtime_properties["feed_id"]
location = ctx.source.instance.runtime_properties[target_feed]["location"]
username = random_string(8)
password = random_string(10)
# Make the request to add the publisher to the feed
dmc = DMaaPControllerHandle(DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, ctx.logger)
add_pub = dmc.add_publisher(feed_id, location, username, password)
add_pub.raise_for_status()
publisher_info = add_pub.json()
publisher_id = publisher_info["pubId"]
ctx.logger.info("Added publisher id {0} to feed {1} at {2}, with user {3}, pass {4}".format(publisher_id, feed_id, location, username, password))
# Set runtime properties on the source
ctx.source.instance.runtime_properties[target_feed] = {
"publisher_id" : publisher_id,
"location" : location,
"publish_url" : ctx.target.instance.runtime_properties["publish_url"],
"log_url" : ctx.target.instance.runtime_properties["log_url"],
"username" : username,
"password" : password
}
# Set key in Consul
ch = ConsulHandle("http://{0}:8500".format(CONSUL_HOST), None, None, ctx.logger)
ch.add_to_entry("{0}:dmaap".format(ctx.source.instance.runtime_properties['service_component_name']), target_feed, ctx.source.instance.runtime_properties[target_feed])
except Exception as e:
ctx.logger.error("Error adding publisher to feed: {er}".format(er=e))
raise NonRecoverableError(e)
@operation
def delete_dr_publisher(**kwargs):
'''
Deletes publisher (the source of the publishes_files relationship)
from the feed (the target of the relationship).
Assumes that the 'publisher_id' property was added to the dictionary of feed-related properties,
when the publisher was added to the feed.
'''
try:
# Make sure we have a name under which to store DMaaP configuration
# Check early so we don't needlessly create DMaaP entities
if 'service_component_name' not in ctx.source.instance.runtime_properties:
raise Exception("Source node does not have 'service_component_name' in runtime_properties")
# Get the publisher id
target_feed = ctx.target.node.id
publisher_id = ctx.source.instance.runtime_properties[target_feed]["publisher_id"]
ctx.logger.info("Attempting to delete publisher {0}".format(publisher_id, target_feed))
# Make the request
dmc = DMaaPControllerHandle(DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, ctx.logger)
del_result = dmc.delete_publisher(publisher_id)
del_result.raise_for_status()
ctx.logger.info("Deleted publisher {0}".format(publisher_id))
# Attempt to remove the entire ":dmaap" entry from the Consul KV store
# Will quietly do nothing if the entry has already been removed
ch = ConsulHandle("http://{0}:8500".format(CONSUL_HOST), None, None, ctx.logger)
ch.delete_entry("{0}:dmaap".format(ctx.source.instance.runtime_properties['service_component_name']))
except Exception as e:
ctx.logger.error("Error deleting publisher: {er}".format(er=e))
# don't raise a NonRecoverable error here--let the uninstall workflow continue
@operation
def add_dr_subscriber(**kwargs):
'''
Sets up the source of the subscribes_to_files relationship as a subscriber to the
feed that is the target of the relationship.
Assumes target (the feed) has the following runtime property set
- feed_id
Assumes source (the subscriber) has a runtime property whose name matches the node name of the feed.
This is a dictionary containing the following properties:
- location (the dcaeLocationName to pass when adding the publisher to the feed)
- delivery_url (the URL to which data router will deliver files)
- username (the username data router will use when delivering files)
- password (the password data router will use when delivering files)
Adds a property to the dictionary above:
- subscriber_id (used to delete the subscriber in the uninstall workflow
'''
try:
target_feed = ctx.target.node.id
ctx.logger.info("Attempting to add subscriber {0} to feed {1}".format(ctx.source.node.id, target_feed))
# Get the parameters for the call
feed_id = ctx.target.instance.runtime_properties["feed_id"]
location = ctx.source.instance.runtime_properties[target_feed]["location"]
delivery_url = ctx.source.instance.runtime_properties[target_feed]["delivery_url"]
username = ctx.source.instance.runtime_properties[target_feed]["username"]
password = ctx.source.instance.runtime_properties[target_feed]["password"]
# Make the request to add the subscriber to the feed
dmc = DMaaPControllerHandle(DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, ctx.logger)
add_sub = dmc.add_subscriber(feed_id, location, delivery_url,username, password)
add_sub.raise_for_status()
subscriber_info = add_sub.json()
subscriber_id = subscriber_info["subId"]
ctx.logger.info("Added subscriber id {0} to feed {1} at {2}".format(subscriber_id, feed_id, location))
# Add subscriber_id to the runtime properties
# ctx.source.instance.runtime_properties[target_feed]["subscriber_id"] = subscriber_id
ctx.source.instance.runtime_properties[target_feed] = {
"subscriber_id": subscriber_id,
"location" : location,
"delivery_url" : delivery_url,
"username" : username,
"password" : password
}
ctx.logger.info("on source: {0}".format(ctx.source.instance.runtime_properties[target_feed]))
# Set key in Consul
ch = ConsulHandle("http://{0}:8500".format(CONSUL_HOST), None, None, ctx.logger)
ch.add_to_entry("{0}:dmaap".format(ctx.source.instance.runtime_properties['service_component_name']), target_feed, ctx.source.instance.runtime_properties[target_feed])
except Exception as e:
ctx.logger.error("Error adding subscriber to feed: {er}".format(er=e))
raise NonRecoverableError(e)
@operation
def delete_dr_subscriber(**kwargs):
'''
Deletes subscriber (the source of the subscribes_to_files relationship)
from the feed (the target of the relationship).
Assumes that the source node's runtime properties dictionary for the target feed
includes 'subscriber_id', set when the publisher was added to the feed.
'''
try:
# Get the subscriber id
target_feed = ctx.target.node.id
subscriber_id = ctx.source.instance.runtime_properties[target_feed]["subscriber_id"]
ctx.logger.info("Attempting to delete subscriber {0} from feed {1}".format(subscriber_id, target_feed))
# Make the request
dmc = DMaaPControllerHandle(DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, ctx.logger)
del_result = dmc.delete_subscriber(subscriber_id)
del_result.raise_for_status()
ctx.logger.info("Deleted subscriber {0}".format(subscriber_id))
# Attempt to remove the entire ":dmaap" entry from the Consul KV store
# Will quietly do nothing if the entry has already been removed
ch = ConsulHandle("http://{0}:8500".format(CONSUL_HOST), None, None, ctx.logger)
ch.delete_entry("{0}:dmaap".format(ctx.source.instance.runtime_properties['service_component_name']))
except Exception as e:
ctx.logger.error("Error deleting subscriber: {er}".format(er=e))
# don't raise a NonRecoverable error here--let the uninstall workflow continue
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