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#!/usr/bin/python
#
# Copyright © 2018-2019 AT&T Intellectual Property.
#
# 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.
import datetime
import importlib
import importlib.util
import json
import logging
import sys
import time
from google.protobuf import json_format, struct_pb2
from google.protobuf.timestamp_pb2 import Timestamp
from proto.BlueprintCommon_pb2 import (
EVENT_COMPONENT_EXECUTED,
EVENT_COMPONENT_NOTIFICATION,
EVENT_COMPONENT_PROCESSING,
EVENT_COMPONENT_TRACE,
Status
)
from proto.BlueprintProcessing_pb2 import (
ExecutionServiceInput,
ExecutionServiceOutput,
)
from .script_executor_configuration import ScriptExecutorConfiguration
logger = logging.getLogger("Utils")
def current_time():
ts = time.time()
return datetime.datetime.fromtimestamp(ts).strftime("%Y-%m-%dT%H:%M:%S.%fZ")
def blueprint_id(input: ExecutionServiceInput):
blueprint_name = input.actionIdentifiers.blueprintName
blueprint_version = input.actionIdentifiers.blueprintVersion
return blueprint_name + '/' + blueprint_version
def blueprint_location(config: ScriptExecutorConfiguration, input: ExecutionServiceInput):
blueprint_name = input.actionIdentifiers.blueprintName
blueprint_version = input.actionIdentifiers.blueprintVersion
return config.blueprints_processor('blueprintDeployPath') + '/' + blueprint_name + '/' + blueprint_version
def instance_for_input(config: ScriptExecutorConfiguration, input: ExecutionServiceInput):
blueprint_name = input.actionIdentifiers.blueprintName
blueprint_version = input.actionIdentifiers.blueprintVersion
action_name = input.actionIdentifiers.actionName
# Get Blueprint python script location
script_location = blueprint_location(config, input) + '/' + 'Scripts/python/__init__.py'
logger.info(script_location)
# Create Dynamic Module Name
module_name = blueprint_name + '-' + blueprint_version
spec = importlib.util.spec_from_file_location(module_name, script_location)
logger.info(spec)
dynamic_module = importlib.util.module_from_spec(spec)
# Add blueprint modules
sys.modules[spec.name] = dynamic_module
spec.loader.exec_module(dynamic_module)
script_clazz = getattr(dynamic_module, action_name)
return script_clazz()
def log_response(input: ExecutionServiceInput, message: str):
payload = struct_pb2.Struct()
payload['message'] = message
status = Status()
status.timestamp = current_time()
status.eventType = EVENT_COMPONENT_TRACE
return ExecutionServiceOutput(commonHeader=input.commonHeader,
actionIdentifiers=input.actionIdentifiers,
payload=payload, status=status)
def send_notification(input: ExecutionServiceInput, message: str):
payload = struct_pb2.Struct()
payload['message'] = message
status = Status()
status.timestamp = current_time()
status.eventType = EVENT_COMPONENT_NOTIFICATION
return ExecutionServiceOutput(commonHeader=input.commonHeader,
actionIdentifiers=input.actionIdentifiers,
payload=payload, status=status)
def ack_response(input: ExecutionServiceInput):
timestamp = Timestamp()
timestamp.GetCurrentTime()
response_common_header = input.commonHeader
status = Status()
status.timestamp = current_time()
status.eventType = EVENT_COMPONENT_PROCESSING
return ExecutionServiceOutput(commonHeader=response_common_header,
actionIdentifiers=input.actionIdentifiers,
status=status)
def success_response(input: ExecutionServiceInput, property_json: json, code: int):
timestamp = Timestamp()
timestamp.GetCurrentTime()
status = Status()
status.timestamp = current_time()
status.eventType = EVENT_COMPONENT_EXECUTED
status.code = code
status.message = 'success'
payload_struct = create_response_payload_from_json(input.actionIdentifiers.actionName, property_json)
return ExecutionServiceOutput(commonHeader=input.commonHeader,
actionIdentifiers=input.actionIdentifiers, status=status, payload=payload_struct)
def failure_response(input: ExecutionServiceInput, property_json: json, error_code: int,
error_message: str):
timestamp = Timestamp()
timestamp.GetCurrentTime()
status = Status()
status.timestamp = current_time()
status.eventType = EVENT_COMPONENT_EXECUTED
status.code = error_code
status.message = 'failure'
payload_struct = create_response_payload_from_json(input.actionIdentifiers.actionName, property_json)
status.errorMessage = error_message
return ExecutionServiceOutput(commonHeader=input.commonHeader,
actionIdentifiers=input.actionIdentifiers, status=status, payload=payload_struct)
def create_response_payload_from_json(action_name, property_json: json):
# Create response Pay load json from property Json
payload_key = action_name + '-response'
response_payload = {}
response_payload[payload_key] = property_json
response_payload_json = json.dumps(response_payload)
# Create Struct from Json
payload_struct = struct_pb2.Struct()
json_format.Parse(str(response_payload_json), payload_struct, ignore_unknown_fields=True)
return payload_struct
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