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+# Copyright 2014 Huawei Technologies Co. Ltd
+#
+# 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.
+
+"""Module to provide util for actions
+
+ .. moduleauthor:: Xiaodong Wang ,xiaodongwang@huawei.com>
+"""
+import logging
+import redis
+
+from contextlib import contextmanager
+
+from compass.db.api import adapter_holder as adapter_db
+from compass.db.api import cluster as cluster_db
+from compass.db.api import host as host_db
+from compass.db.api import machine as machine_db
+from compass.deployment.utils import constants as const
+
+
+@contextmanager
+def lock(lock_name, blocking=True, timeout=10):
+ """acquire a lock to do some actions.
+
+ The lock is acquired by lock_name among the whole distributed
+ systems.
+ """
+ # TODO(xicheng): in future we should explicitly told which redis
+ # server we want to talk to make the lock works on distributed
+ # systems.
+ redis_instance = redis.Redis()
+ instance_lock = redis_instance.lock(lock_name, timeout=timeout)
+ owned = False
+ try:
+ locked = instance_lock.acquire(blocking=blocking)
+ if locked:
+ owned = True
+ logging.debug('acquired lock %s', lock_name)
+ yield instance_lock
+ else:
+ logging.info('lock %s is already hold', lock_name)
+ yield None
+
+ except Exception as error:
+ logging.info(
+ 'redis fails to acquire the lock %s', lock_name)
+ logging.exception(error)
+ yield None
+
+ finally:
+ if owned:
+ instance_lock.acquired_until = 0
+ instance_lock.release()
+ logging.debug('released lock %s', lock_name)
+ else:
+ logging.debug('nothing to release %s', lock_name)
+
+
+class ActionHelper(object):
+
+ @staticmethod
+ def get_adapter_info(adapter_id, cluster_id, user):
+ """Get adapter information. Return a dictionary as below,
+
+ {
+ "id": 1,
+ "name": "xxx",
+ "flavors": [
+ {
+ "flavor_name": "xxx",
+ "roles": ['xxx', 'yyy', ...],
+ "template": "xxx.tmpl"
+ },
+ ...
+ ],
+ "metadata": {
+ "os_config": {
+ ...
+ },
+ "package_config": {
+ ...
+ }
+ },
+ "os_installer": {
+ "name": "cobbler",
+ "settings": {....}
+ },
+ "pk_installer": {
+ "name": "chef",
+ "settings": {....}
+ },
+ ...
+ }
+ To view a complete output, please refer to backend doc.
+ """
+
+ adapter_info = adapter_db.get_adapter(adapter_id, user=user)
+ metadata = cluster_db.get_cluster_metadata(cluster_id, user=user)
+ adapter_info.update({const.METADATA: metadata})
+
+ for flavor_info in adapter_info[const.FLAVORS]:
+ roles = flavor_info[const.ROLES]
+ flavor_info[const.ROLES] = ActionHelper._get_role_names(roles)
+
+ return adapter_info
+
+ @staticmethod
+ def _get_role_names(roles):
+ return [role[const.NAME] for role in roles]
+
+ @staticmethod
+ def get_cluster_info(cluster_id, user):
+ """Get cluster information.Return a dictionary as below,
+
+ {
+ "id": 1,
+ "adapter_id": 1,
+ "os_version": "CentOS-6.5-x86_64",
+ "name": "cluster_01",
+ "flavor": {
+ "flavor_name": "zzz",
+ "template": "xx.tmpl",
+ "roles": [...]
+ }
+ "os_config": {..},
+ "package_config": {...},
+ "deployed_os_config": {},
+ "deployed_package_config": {},
+ "owner": "xxx"
+ }
+ """
+
+ cluster_info = cluster_db.get_cluster(cluster_id, user=user)
+
+ # convert roles retrieved from db into a list of role names
+ roles_info = cluster_info.setdefault(
+ const.FLAVOR, {}).setdefault(const.ROLES, [])
+ cluster_info[const.FLAVOR][const.ROLES] = \
+ ActionHelper._get_role_names(roles_info)
+
+ # get cluster config info
+ cluster_config = cluster_db.get_cluster_config(cluster_id, user=user)
+ cluster_info.update(cluster_config)
+
+ deploy_config = cluster_db.get_cluster_deployed_config(cluster_id,
+ user=user)
+ cluster_info.update(deploy_config)
+
+ return cluster_info
+
+ @staticmethod
+ def get_hosts_info(cluster_id, hosts_id_list, user):
+ """Get hosts information. Return a dictionary as below,
+
+ {
+ "hosts": {
+ 1($host_id): {
+ "reinstall_os": True,
+ "mac": "xxx",
+ "name": "xxx",
+ "roles": [xxx, yyy]
+ },
+ "networks": {
+ "eth0": {
+ "ip": "192.168.1.1",
+ "netmask": "255.255.255.0",
+ "is_mgmt": True,
+ "is_promiscuous": False,
+ "subnet": "192.168.1.0/24"
+ },
+ "eth1": {...}
+ },
+ "os_config": {},
+ "package_config": {},
+ "deployed_os_config": {},
+ "deployed_package_config": {}
+ },
+ 2: {...},
+ ....
+ }
+ }
+ """
+
+ hosts_info = {}
+ for host_id in hosts_id_list:
+ info = cluster_db.get_cluster_host(cluster_id, host_id, user=user)
+ logging.debug("checking on info %r %r" % (host_id, info))
+
+ info[const.ROLES] = ActionHelper._get_role_names(info[const.ROLES])
+
+ # TODO(grace): Is following line necessary??
+ info.setdefault(const.ROLES, [])
+
+ config = cluster_db.get_cluster_host_config(cluster_id,
+ host_id,
+ user=user)
+ info.update(config)
+
+ networks = info[const.NETWORKS]
+ networks_dict = {}
+ # Convert networks from list to dictionary format
+ for entry in networks:
+ nic_info = {}
+ nic_info = {
+ entry[const.NIC]: {
+ const.IP_ADDR: entry[const.IP_ADDR],
+ const.NETMASK: entry[const.NETMASK],
+ const.MGMT_NIC_FLAG: entry[const.MGMT_NIC_FLAG],
+ const.PROMISCUOUS_FLAG: entry[const.PROMISCUOUS_FLAG],
+ const.SUBNET: entry[const.SUBNET]
+ }
+ }
+ networks_dict.update(nic_info)
+
+ info[const.NETWORKS] = networks_dict
+
+ hosts_info[host_id] = info
+
+ return hosts_info
+
+ @staticmethod
+ def save_deployed_config(deployed_config, user):
+ """Save deployed config."""
+ cluster_config = deployed_config[const.CLUSTER]
+ cluster_id = cluster_config[const.ID]
+ del cluster_config[const.ID]
+
+ cluster_db.update_cluster_deployed_config(cluster_id, user=user,
+ **cluster_config)
+
+ hosts_id_list = deployed_config[const.HOSTS].keys()
+ for host_id in hosts_id_list:
+ config = deployed_config[const.HOSTS][host_id]
+ cluster_db.update_cluster_host_deployed_config(cluster_id,
+ host_id,
+ user=user,
+ **config)
+
+ @staticmethod
+ def update_state(
+ cluster_id, host_id_list, user, **kwargs
+ ):
+ # update all clusterhosts state
+ for host_id in host_id_list:
+ cluster_db.update_cluster_host_state(
+ cluster_id,
+ host_id,
+ user=user,
+ **kwargs
+ )
+
+ # update cluster state
+ cluster_db.update_cluster_state(
+ cluster_id,
+ user=user,
+ **kwargs
+ )
+
+ @staticmethod
+ def delete_cluster(
+ cluster_id, host_id_list, user, delete_underlying_host=False
+ ):
+ """Delete cluster.
+
+ If delete_underlying_host is set, underlying hosts will also
+ be deleted.
+ """
+ if delete_underlying_host:
+ for host_id in host_id_list:
+ host_db.del_host(
+ host_id, True, True, user=user
+ )
+ cluster_db.del_cluster(
+ cluster_id, True, True, user=user
+ )
+
+ @staticmethod
+ def delete_cluster_host(
+ cluster_id, host_id, user, delete_underlying_host=False
+ ):
+ """Delete clusterhost.
+
+ If delete_underlying_host set, also delete underlying host.
+ """
+ if delete_underlying_host:
+ host_db.del_host(
+ host_id, True, True, user=user
+ )
+ cluster_db.del_cluster_host(
+ cluster_id, host_id, True, True, user=user
+ )
+
+ @staticmethod
+ def delete_host(host_id, user):
+ host_db.del_host(
+ host_id, True, True, user=user
+ )
+
+ @staticmethod
+ def host_ready(host_id, from_database_only, user):
+ """Trigger host ready."""
+ host_db.update_host_state_internal(
+ host_id, from_database_only=from_database_only,
+ user=user, ready=True
+ )
+
+ @staticmethod
+ def cluster_host_ready(
+ cluster_id, host_id, from_database_only, user
+ ):
+ """Trigger clusterhost ready."""
+ cluster_db.update_cluster_host_state_internal(
+ cluster_id, host_id, from_database_only=from_database_only,
+ user=user, ready=True
+ )
+
+ @staticmethod
+ def is_cluster_os_ready(cluster_id, user=None):
+ return cluster_db.is_cluster_os_ready(cluster_id, user=user)
+
+ @staticmethod
+ def cluster_ready(cluster_id, from_database_only, user):
+ """Trigger cluster ready."""
+ cluster_db.update_cluster_state_internal(
+ cluster_id, from_database_only=from_database_only,
+ user=user, ready=True
+ )
+
+ @staticmethod
+ def get_machine_IPMI(machine_id, user):
+ machine_info = machine_db.get_machine(machine_id, user=user)
+ return machine_info[const.IPMI_CREDS]