Move backup and restore into common
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059230d369
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01c82f5d19
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@ -45,89 +45,33 @@ def initialize_cluster(zkhandler, overwrite=False):
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"""
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Initialize a new cluster
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"""
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# Abort if we've initialized the cluster before
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if zkhandler.exists('/config/primary_node') and not overwrite:
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return False
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retflag, retmsg = pvc_cluster.cluster_initialize(zkhandler, overwrite)
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if overwrite:
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# Delete the existing keys; ignore any errors
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status = zkhandler.delete([
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'/config'
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'/nodes',
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'/domains',
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'/networks',
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'/ceph',
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'/ceph/osds',
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'/ceph/pools',
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'/ceph/volumes',
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'/ceph/snapshots',
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'/cmd',
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'/cmd/domains',
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'/cmd/ceph',
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'/locks',
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'/locks/flush_lock',
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'/locks/primary_node'
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], recursive=True)
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retmsg = {
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'message': retmsg
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}
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if retflag:
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retcode = 200
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else:
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retcode = 400
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if not status:
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return False
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# Create the root keys
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status = zkhandler.write([
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('/config', ''),
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('/config/primary_node', 'none'),
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('/config/upstream_ip', 'none'),
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('/config/maintenance', 'False'),
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('/config/migration_target_selector', 'none'),
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('/nodes', ''),
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('/domains', ''),
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('/networks', ''),
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('/ceph', ''),
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('/ceph/osds', ''),
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('/ceph/pools', ''),
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('/ceph/volumes', ''),
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('/ceph/snapshots', ''),
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('/cmd', ''),
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('/cmd/domains', ''),
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('/cmd/ceph', ''),
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('/locks', ''),
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('/locks/flush_lock', ''),
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('/locks/primary_node', ''),
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])
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return status
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return retmsg, retcode
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@ZKConnection(config)
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def backup_cluster(zkhandler):
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# Dictionary of values to come
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cluster_data = dict()
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retflag, retdata = pvc_cluster.cluster_backup(zkhandler)
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def get_data(path):
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data = zkhandler.read(path)
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children = zkhandler.children(path)
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if retflag:
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retcode = 200
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retdata = json.dumps(retdata)
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else:
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retcode = 400
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retdata = {
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'message': retdata
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}
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cluster_data[path] = data
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if children:
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if path == '/':
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child_prefix = '/'
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else:
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child_prefix = path + '/'
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for child in children:
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if child_prefix + child == '/zookeeper':
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# We must skip the built-in /zookeeper tree
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continue
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if child_prefix + child == '/patroni':
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# We must skip the /patroni tree
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continue
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get_data(child_prefix + child)
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get_data('/')
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return json.dumps(cluster_data), 200
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return retdata, retcode
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@ZKConnection(config)
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@ -135,21 +79,19 @@ def restore_cluster(zkhandler, cluster_data_raw):
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try:
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cluster_data = json.loads(cluster_data_raw)
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except Exception as e:
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return {"message": "Failed to parse JSON data: {}.".format(e)}, 400
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return {'message': 'ERROR: Failed to parse JSON data: {}'.format(e)}, 400
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# Build a key+value list
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kv = []
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for key in cluster_data:
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data = cluster_data[key]
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kv.append((key, data))
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retflag, retdata = pvc_cluster.cluster_restore(zkhandler, cluster_data)
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# Close the Zookeeper connection
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result = zkhandler.write(kv)
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if result:
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return {'message': 'Restore completed successfully.'}, 200
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retdata = {
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'message': retdata
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}
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if retflag:
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retcode = 200
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else:
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return {'message': 'Restore failed.'}, 500
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retcode = 400
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return retdata, retcode
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#
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@ -259,3 +259,77 @@ def get_info(zkhandler):
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return True, cluster_information
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else:
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return False, 'ERROR: Failed to obtain cluster information!'
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def cluster_initialize(zkhandler, overwrite=False):
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# Abort if we've initialized the cluster before
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if zkhandler.exists('base.config.primary_node') and not overwrite:
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return False, 'ERROR: Cluster contains data and overwrite not set.'
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if overwrite:
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# Delete the existing keys; ignore any errors
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status = zkhandler.delete(zkhandler.schema.keys('base'), recursive=True)
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if not status:
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return False, 'ERROR: Failed to delete data in cluster; running nodes perhaps?'
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# Create the root keys
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zkhandler.schema.apply(zkhandler)
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return True, 'Successfully initialized cluster'
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def cluster_backup(zkhandler):
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# Dictionary of values to come
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cluster_data = dict()
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def get_data(path):
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data = zkhandler.read(path)
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children = zkhandler.children(path)
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cluster_data[path] = data
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if children:
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if path == '/':
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child_prefix = '/'
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else:
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child_prefix = path + '/'
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for child in children:
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if child_prefix + child == '/zookeeper':
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# We must skip the built-in /zookeeper tree
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continue
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if child_prefix + child == '/patroni':
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# We must skip the /patroni tree
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continue
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get_data(child_prefix + child)
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try:
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get_data('/')
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except Exception as e:
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return False, 'ERROR: Failed to obtain backup: {}'.format(e)
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return True, cluster_data
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def cluster_restore(zkhandler, cluster_data):
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# Build a key+value list
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kv = []
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schema_version = None
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for key in cluster_data:
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if key == zkhandler.zkschema.path('base.schema.version'):
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schema_version = cluster_data[key]
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data = cluster_data[key]
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kv.append((key, data))
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if schema_version != zkhandler.schema.version:
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return False, 'ERROR: Schema version of backup ({}) does not match cluster schema version ({}).'.format(schema_version, zkhandler.schema.version)
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# Close the Zookeeper connection
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result = zkhandler.write(kv)
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if result:
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return True, 'Restore completed successfully.'
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else:
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return False, 'Restore failed.'
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