murano-apps/Cassandra/package/Classes/CassandraCluster.yaml

78 lines
2.7 KiB
YAML

# 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.
Namespaces:
=: io.murano.apps.apache
std: io.murano
res: io.murano.resources
sys: io.murano.system
Name: CassandraCluster
Extends: std:Application
Properties:
name:
Contract: $.string().notNull()
seedNodes:
Contract: [$.class(CassandraNode).notNull()]
regularNodes:
Contract: [$.class(CassandraNode).notNull()]
Methods:
initialize:
Body:
- $._environment: $.find(std:Environment).require()
deploy:
Body:
- If: not $.getAttr(deployed, false)
Then:
- $._environment.reporter.report($this, 'Creating VMs for Cassandra cluster')
# Spawn VMs in parallel
- Parallel:
- $.seedNodes.pselect($.spawnInstance())
- $.regularNodes.pselect($.spawnInstance())
# Collect internal IPs of seed nodes
- $seedNodesAsString: join(',', $.seedNodes.select($.getInternalIp()))
# Deploy Cassandra with default conf
- Parallel:
- $.seedNodes.pselect($.deployInstance())
- $.regularNodes.pselect($.deployInstance())
- $msg: format('Deployed {0} seed nodes and {1} usual nodes', len($.seedNodes), len($.regularNodes))
- $._environment.reporter.report($this, $msg)
# Update configuration (identical on all nodes)
- Parallel:
- $.seedNodes.pselect($.updateConfiguration($this.name, $seedNodesAsString))
- $.regularNodes.pselect($.updateConfiguration($this.name, $seedNodesAsString))
# Restart nodes for changes to take an effect
- $msg: format('Restarting all nodes in the cluster')
- $._environment.reporter.report($this, $msg)
- $.seedNodes.pselect($.restartCassandra(delay => 1))
# No parallel there because usual nodes have to be started one by one
# Uses delay of restart for usual nodes to give seed nodes time on slow envs
- $.regularNodes.select($.restartCassandra(delay => 120))
- $._environment.reporter.report($this, 'Cassandra cluster is deployed')
- $._environment.reporter.report($this, 'Log in to any instance and use "nodetool status" to check')
- $.setAttr(deployed, true)