def _create_instances(context, db_info, datastore, datastore_version,
instances, extended_properties, locality):
redis_conf = CONF.get(datastore_version.manager)
ephemeral_enabled = redis_conf.device_path
volume_enabled = redis_conf.volume_support
num_instances = len(instances)
models.validate_instance_flavors(context, instances, volume_enabled,
ephemeral_enabled)
total_volume_allocation = models.get_required_volume_size(
instances, volume_enabled)
models.assert_homogeneous_cluster(instances)
models.validate_instance_nics(context, instances)
name_index = 1
for instance in instances:
if not instance.get('name'):
instance['name'] = "%s-member-%s" % (db_info.name, name_index)
name_index += 1
# Check quotas
quota_request = {
'instances': num_instances,
'volumes': total_volume_allocation
}
check_quotas(context.project_id, quota_request)
# Creating member instances
return [
inst_models.Instance.create(
context,
instance['name'],
instance['flavor_id'],
datastore_version.image_id, [], [],
datastore,
datastore_version,
instance.get('volume_size'),
None,
instance.get('availability_zone', None),
instance.get('nics', None),
configuration_id=None,
cluster_config={
"id": db_info.id,
"instance_type": "member"
},
volume_type=instance.get('volume_type', None),
modules=instance.get('modules'),
locality=locality,
region_name=instance.get('region_name'))
for instance in instances
]
def create(cls, context, name, datastore, datastore_version, instances,
extended_properties, locality, configuration
): # pylint: disable=too-many-arguments, too-many-locals
"""Create Clusters API endpoint.
main function to create a cluster is here
https://github.com/openstack/trove/blob/master/trove/cluster/service.py#L162-L234
"""
# 1. validates args
if context is None:
LOG.error("no context")
return None
if name is None:
LOG.error("no name")
return None
if datastore is None:
LOG.error("no datastore")
return None
if datastore_version is None:
LOG.error("no datastore_version")
return None
if instances is None:
LOG.error("no instances")
return None
models.assert_homogeneous_cluster(instances)
manager_conf = CONF.get(datastore_version.manager)
models.validate_instance_flavors(context, instances,
manager_conf.volume_support,
manager_conf.device_path)
models.validate_instance_nics(context, instances)
# 2. Insert a cluster data to clusters table
db_info = models.DBCluster.create(
name=name,
tenant_id=context.project_id,
datastore_version_id=datastore_version.id,
configuration_id=configuration,
task_status=ClusterTasks.BUILDING_INITIAL)
# 3. Create instances in OpenStack
cls._create_insts(context, db_info.id, db_info.name, datastore,
datastore_version, instances, locality,
configuration)
# 4. Calling taskmanager to further proceed for cluster-configuration
LOG.debug(
"Calling taskmanager to further proceed for "
"cluster-configuration of %s", db_info.id)
task_api.load(context,
datastore_version.manager).create_cluster(db_info.id)
# 5. Returns cluster instance to render HTTP response.
return K2hdkcCluster(context, db_info, datastore, datastore_version)
def _validate_cluster_instances(context, instances, datastore,
datastore_version):
"""Validate the flavor and volume"""
ds_conf = CONF.get(datastore_version.manager)
num_instances = len(instances)
# Checking volumes and get delta for quota check
cluster_models.validate_instance_flavors(context, instances,
ds_conf.volume_support,
ds_conf.device_path)
req_volume_size = cluster_models.get_required_volume_size(
instances, ds_conf.volume_support)
cluster_models.assert_homogeneous_cluster(instances)
deltas = {'instances': num_instances, 'volumes': req_volume_size}
# quota check
check_quotas(context.tenant, deltas)
# Checking networks are same for the cluster
cluster_models.validate_instance_nics(context, instances)
def _create_cluster_instances(cls, context, cluster_id, cluster_name,
datastore, datastore_version, instances,
extended_properties, locality,
configuration_id):
LOG.debug("Processing a request for new cluster instances.")
cassandra_conf = CONF.get(datastore_version.manager)
eph_enabled = cassandra_conf.device_path
vol_enabled = cassandra_conf.volume_support
# Validate instance flavors.
models.validate_instance_flavors(context, instances, vol_enabled,
eph_enabled)
# Compute the total volume allocation.
req_volume_size = models.get_required_volume_size(
instances, vol_enabled)
# Check requirements against quota.
num_new_instances = len(instances)
deltas = {'instances': num_new_instances, 'volumes': req_volume_size}
models.assert_homogeneous_cluster(instances)
check_quotas(context.tenant, deltas)
# Checking networks are same for the cluster
models.validate_instance_nics(context, instances)
# Creating member instances.
num_instances = len(
CassandraClusterTasks.find_cluster_node_ids(cluster_id))
new_instances = []
for instance_idx, instance in enumerate(instances, num_instances + 1):
instance_az = instance.get('availability_zone', None)
member_config = {
"id": cluster_id,
"instance_type": "member",
"dc": cls.DEFAULT_DATA_CENTER,
"rack": instance_az or cls.DEFAULT_RACK
}
instance_name = instance.get('name')
if not instance_name:
instance_name = cls._build_instance_name(
cluster_name, member_config['dc'], member_config['rack'],
instance_idx)
new_instance = inst_models.Instance.create(
context,
instance_name,
instance['flavor_id'],
datastore_version.image_id, [], [],
datastore,
datastore_version,
instance['volume_size'],
None,
nics=instance.get('nics', None),
availability_zone=instance_az,
configuration_id=configuration_id,
cluster_config=member_config,
volume_type=instance.get('volume_type', None),
modules=instance.get('modules'),
locality=locality,
region_name=instance.get('region_name'))
new_instances.append(new_instance)
return new_instances
def create(cls, context, name, datastore, datastore_version,
instances, extended_properties, locality, configuration):
if configuration:
raise exception.ConfigurationNotSupported()
# TODO(amcreynolds): consider moving into CONF and even supporting
# TODO(amcreynolds): an array of values, e.g. [3, 5, 7]
# TODO(amcreynolds): or introduce a min/max num_instances and set
# TODO(amcreynolds): both to 3
num_instances = len(instances)
if num_instances != 3:
raise exception.ClusterNumInstancesNotSupported(num_instances=3)
mongo_conf = CONF.get(datastore_version.manager)
num_configsvr = int(extended_properties.get(
'num_configsvr', mongo_conf.num_config_servers_per_cluster))
num_mongos = int(extended_properties.get(
'num_mongos', mongo_conf.num_query_routers_per_cluster))
delta_instances = num_instances + num_configsvr + num_mongos
models.validate_instance_flavors(
context, instances, mongo_conf.volume_support,
mongo_conf.device_path)
models.assert_homogeneous_cluster(instances)
flavor_id = instances[0]['flavor_id']
volume_size = instances[0].get('volume_size', None)
volume_type = instances[0].get('volume_type', None)
configsvr_vsize = int(extended_properties.get(
'configsvr_volume_size', mongo_conf.config_servers_volume_size))
configsvr_vtype = extended_properties.get('configsvr_volume_type',
volume_type)
mongos_vsize = int(extended_properties.get(
'mongos_volume_size', mongo_conf.query_routers_volume_size))
mongos_vtype = extended_properties.get('mongos_volume_type',
volume_type)
all_instances = (instances
+ [{'volume_size': configsvr_vsize}] * num_configsvr
+ [{'volume_size': mongos_vsize}] * num_mongos)
req_volume_size = models.get_required_volume_size(
all_instances, mongo_conf.volume_support)
deltas = {'instances': delta_instances, 'volumes': req_volume_size}
check_quotas(context.project_id, deltas)
# Checking networks are same for the cluster
models.validate_instance_nics(context, instances)
nics = instances[0].get('nics', None)
azs = [instance.get('availability_zone', None)
for instance in instances]
regions = [instance.get('region_name', None)
for instance in instances]
db_info = models.DBCluster.create(
name=name, tenant_id=context.project_id,
datastore_version_id=datastore_version.id,
task_status=ClusterTasks.BUILDING_INITIAL)
replica_set_name = "rs1"
member_config = {"id": db_info.id,
"shard_id": utils.generate_uuid(),
"instance_type": "member",
"replica_set_name": replica_set_name}
configsvr_config = {"id": db_info.id,
"instance_type": "config_server"}
mongos_config = {"id": db_info.id,
"instance_type": "query_router"}
if mongo_conf.cluster_secure:
cluster_key = utils.generate_random_password()
member_config['key'] = cluster_key
configsvr_config['key'] = cluster_key
mongos_config['key'] = cluster_key
for i in range(0, num_instances):
instance_name = "%s-%s-%s" % (name, replica_set_name, str(i + 1))
inst_models.Instance.create(context, instance_name,
flavor_id,
datastore_version.image_id,
[], [], datastore,
datastore_version,
volume_size, None,
availability_zone=azs[i],
nics=nics,
configuration_id=None,
cluster_config=member_config,
volume_type=volume_type,
modules=instances[i].get('modules'),
locality=locality,
region_name=regions[i])
for i in range(1, num_configsvr + 1):
instance_name = "%s-%s-%s" % (name, "configsvr", str(i))
inst_models.Instance.create(context, instance_name,
flavor_id,
datastore_version.image_id,
[], [], datastore,
datastore_version,
configsvr_vsize, None,
availability_zone=None,
nics=nics,
configuration_id=None,
cluster_config=configsvr_config,
volume_type=configsvr_vtype,
locality=locality,
region_name=regions[i % num_instances]
)
for i in range(1, num_mongos + 1):
instance_name = "%s-%s-%s" % (name, "mongos", str(i))
inst_models.Instance.create(context, instance_name,
flavor_id,
datastore_version.image_id,
[], [], datastore,
datastore_version,
mongos_vsize, None,
availability_zone=None,
nics=nics,
configuration_id=None,
cluster_config=mongos_config,
volume_type=mongos_vtype,
locality=locality,
region_name=regions[i % num_instances]
)
task_api.load(context, datastore_version.manager).create_cluster(
db_info.id)
return MongoDbCluster(context, db_info, datastore, datastore_version)
def _create_instances(context,
db_info,
datastore,
datastore_version,
instances,
extended_properties,
locality,
new_cluster=True):
vertica_conf = CONF.get(datastore_version.manager)
num_instances = len(instances)
existing = inst_models.DBInstance.find_all(cluster_id=db_info.id,
deleted=False).all()
num_existing = len(existing)
# Matching number of instances with configured cluster_member_count
if (new_cluster
and num_instances != vertica_conf.cluster_member_count):
raise exception.ClusterNumInstancesNotSupported(
num_instances=vertica_conf.cluster_member_count)
models.validate_instance_flavors(context, instances,
vertica_conf.volume_support,
vertica_conf.device_path)
req_volume_size = models.get_required_volume_size(
instances, vertica_conf.volume_support)
models.assert_homogeneous_cluster(instances)
models.validate_instance_nics(context, instances)
deltas = {'instances': num_instances, 'volumes': req_volume_size}
check_quotas(context.tenant, deltas)
flavor_id = instances[0]['flavor_id']
volume_size = instances[0].get('volume_size', None)
volume_type = instances[0].get('volume_type', None)
nics = [instance.get('nics', None) for instance in instances]
azs = [
instance.get('availability_zone', None) for instance in instances
]
regions = [instance.get('region_name', None) for instance in instances]
# Creating member instances
minstances = []
for i in range(0, num_instances):
if i == 0 and new_cluster:
member_config = {"id": db_info.id, "instance_type": "master"}
else:
member_config = {"id": db_info.id, "instance_type": "member"}
instance_name = "%s-member-%s" % (db_info.name,
str(i + num_existing + 1))
minstances.append(
inst_models.Instance.create(
context,
instance_name,
flavor_id,
datastore_version.image_id, [], [],
datastore,
datastore_version,
volume_size,
None,
nics=nics[i],
availability_zone=azs[i],
configuration_id=None,
cluster_config=member_config,
volume_type=volume_type,
modules=instances[i].get('modules'),
locality=locality,
region_name=regions[i]))
return minstances
