| #!/usr/bin/env python |
| # |
| # Copyright 2016 - The Android Open Source Project |
| # |
| # 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. |
| |
| """Config manager. |
| |
| Three protobuf messages are defined in |
| driver/internal/config/proto/internal_config.proto |
| driver/internal/config/proto/user_config.proto |
| |
| Internal config file User config file |
| | | |
| v v |
| InternalConfig UserConfig |
| (proto message) (proto message) |
| | | |
| | | |
| |-> AcloudConfig <-| |
| |
| At runtime, AcloudConfigManager performs the following steps. |
| - Load driver config file into a InternalConfig message instance. |
| - Load user config file into a UserConfig message instance. |
| - Create AcloudConfig using InternalConfig and UserConfig. |
| |
| TODO(fdeng): |
| 1. Add support for override configs with command line args. |
| 2. Scan all configs to find the right config for given branch and build_id. |
| Raise an error if the given build_id is smaller than min_build_id |
| only applies to release build id. |
| Raise an error if the branch is not supported. |
| |
| """ |
| |
| import logging |
| import os |
| |
| from acloud.internal.proto import internal_config_pb2 |
| from acloud.internal.proto import user_config_pb2 |
| from acloud.public import errors |
| from google.protobuf import text_format |
| _CONFIG_DATA_PATH = os.path.join( |
| os.path.dirname(os.path.abspath(__file__)), "data") |
| |
| logger = logging.getLogger(__name__) |
| |
| |
| class AcloudConfig(object): |
| """A class that holds all configurations for acloud.""" |
| |
| REQUIRED_FIELD = [ |
| "project", "zone", "machine_type", "network", "storage_bucket_name", |
| "min_machine_size", "disk_image_name", "disk_image_mime_type" |
| ] |
| |
| def __init__(self, usr_cfg, internal_cfg): |
| """Initialize. |
| |
| Args: |
| usr_cfg: A protobuf object that holds the user configurations. |
| internal_cfg: A protobuf object that holds internal configurations. |
| """ |
| self.service_account_name = usr_cfg.service_account_name |
| self.service_account_private_key_path = ( |
| usr_cfg.service_account_private_key_path) |
| self.creds_cache_file = internal_cfg.creds_cache_file |
| self.user_agent = internal_cfg.user_agent |
| self.client_id = usr_cfg.client_id |
| self.client_secret = usr_cfg.client_secret |
| |
| self.project = usr_cfg.project |
| self.zone = usr_cfg.zone |
| self.machine_type = (usr_cfg.machine_type or |
| internal_cfg.default_usr_cfg.machine_type) |
| self.network = (usr_cfg.network or |
| internal_cfg.default_usr_cfg.network) |
| self.ssh_private_key_path = usr_cfg.ssh_private_key_path |
| self.ssh_public_key_path = usr_cfg.ssh_public_key_path |
| self.storage_bucket_name = usr_cfg.storage_bucket_name |
| self.metadata_variable = { |
| key: val |
| for key, val in |
| internal_cfg.default_usr_cfg.metadata_variable.iteritems() |
| } |
| self.metadata_variable.update(usr_cfg.metadata_variable) |
| |
| self.device_resolution_map = { |
| device: resolution |
| for device, resolution in |
| internal_cfg.device_resolution_map.iteritems() |
| } |
| self.device_default_orientation_map = { |
| device: orientation |
| for device, orientation in |
| internal_cfg.device_default_orientation_map.iteritems() |
| } |
| self.no_project_access_msg_map = { |
| project: msg for project, msg |
| in internal_cfg.no_project_access_msg_map.iteritems()} |
| self.min_machine_size = internal_cfg.min_machine_size |
| self.disk_image_name = internal_cfg.disk_image_name |
| self.disk_image_mime_type = internal_cfg.disk_image_mime_type |
| self.disk_image_extension = internal_cfg.disk_image_extension |
| self.disk_raw_image_name = internal_cfg.disk_raw_image_name |
| self.disk_raw_image_extension = internal_cfg.disk_raw_image_extension |
| self.valid_branch_and_min_build_id = { |
| branch: min_build_id |
| for branch, min_build_id in |
| internal_cfg.valid_branch_and_min_build_id.iteritems() |
| } |
| self.precreated_data_image_map = { |
| size_gb: image_name |
| for size_gb, image_name in |
| internal_cfg.precreated_data_image.iteritems() |
| } |
| self.extra_data_disk_size_gb = ( |
| usr_cfg.extra_data_disk_size_gb or |
| internal_cfg.default_usr_cfg.extra_data_disk_size_gb) |
| if self.extra_data_disk_size_gb > 0: |
| if "cfg_sta_persistent_data_device" not in usr_cfg.metadata_variable: |
| # If user did not set it explicity, use default. |
| self.metadata_variable["cfg_sta_persistent_data_device"] = ( |
| internal_cfg.default_extra_data_disk_device) |
| if "cfg_sta_ephemeral_data_size_mb" in usr_cfg.metadata_variable: |
| raise errors.ConfigError( |
| "The following settings can't be set at the same time: " |
| "extra_data_disk_size_gb and" |
| "metadata variable cfg_sta_ephemeral_data_size_mb.") |
| if "cfg_sta_ephemeral_data_size_mb" in self.metadata_variable: |
| del self.metadata_variable["cfg_sta_ephemeral_data_size_mb"] |
| |
| # Fields that can be overriden by args |
| self.orientation = usr_cfg.orientation |
| self.resolution = usr_cfg.resolution |
| |
| # Verify validity of configurations. |
| self.Verify() |
| |
| def OverrideWithArgs(self, parsed_args): |
| """Override configuration values with args passed in from cmd line. |
| |
| Args: |
| parsed_args: Args parsed from command line. |
| """ |
| if parsed_args.which == "create" and parsed_args.spec: |
| if not self.resolution: |
| self.resolution = self.device_resolution_map.get( |
| parsed_args.spec, "") |
| if not self.orientation: |
| self.orientation = self.device_default_orientation_map.get( |
| parsed_args.spec, "") |
| if parsed_args.email: |
| self.service_account_name = parsed_args.email |
| |
| def Verify(self): |
| """Verify configuration fields.""" |
| missing = [f for f in self.REQUIRED_FIELD if not getattr(self, f)] |
| if missing: |
| raise errors.ConfigError( |
| "Missing required configuration fields: %s" % missing) |
| if (self.extra_data_disk_size_gb and self.extra_data_disk_size_gb |
| not in self.precreated_data_image_map): |
| raise errors.ConfigError( |
| "Supported extra_data_disk_size_gb options(gb): %s, " |
| "invalid value: %d" % (self.precreated_data_image_map.keys(), |
| self.extra_data_disk_size_gb)) |
| |
| |
| class AcloudConfigManager(object): |
| """A class that loads configurations.""" |
| |
| _DEFAULT_INTERNAL_CONFIG_PATH = os.path.join(_CONFIG_DATA_PATH, |
| "default.config") |
| |
| def __init__(self, |
| user_config_path, |
| internal_config_path=_DEFAULT_INTERNAL_CONFIG_PATH): |
| """Initialize. |
| |
| Args: |
| user_config_path: path to the user config. |
| internal_config_path: path to the internal conifg. |
| """ |
| self._user_config_path = user_config_path |
| self._internal_config_path = internal_config_path |
| |
| def Load(self): |
| """Load the configurations.""" |
| internal_cfg = None |
| usr_cfg = None |
| try: |
| with open(self._internal_config_path) as config_file: |
| internal_cfg = self.LoadConfigFromProtocolBuffer( |
| config_file, internal_config_pb2.InternalConfig) |
| |
| with open(self._user_config_path, "r") as config_file: |
| usr_cfg = self.LoadConfigFromProtocolBuffer( |
| config_file, user_config_pb2.UserConfig) |
| except OSError as e: |
| raise errors.ConfigError("Could not load config files: %s" % |
| str(e)) |
| return AcloudConfig(usr_cfg, internal_cfg) |
| |
| @staticmethod |
| def LoadConfigFromProtocolBuffer(config_file, message_type): |
| """Load config from a text-based protocol buffer file. |
| |
| Args: |
| config_file: A python File object. |
| message_type: A proto message class. |
| |
| Returns: |
| An instance of type "message_type" populated with data |
| from the file. |
| """ |
| try: |
| config = message_type() |
| text_format.Merge(config_file.read(), config) |
| return config |
| except text_format.ParseError as e: |
| raise errors.ConfigError("Could not parse config: %s" % str(e)) |