File: client.py

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# Copyright 2014 - Mirantis, Inc.
# Copyright 2015 - StackStorm, Inc.
#
#    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 six

from mistralclient.api import httpclient
from mistralclient.api.v2 import action_executions
from mistralclient.api.v2 import actions
from mistralclient.api.v2 import cron_triggers
from mistralclient.api.v2 import environments
from mistralclient.api.v2 import executions
from mistralclient.api.v2 import members
from mistralclient.api.v2 import services
from mistralclient.api.v2 import tasks
from mistralclient.api.v2 import workbooks
from mistralclient.api.v2 import workflows


class Client(object):
    def __init__(self, mistral_url=None, username=None, api_key=None,
                 project_name=None, auth_url=None, project_id=None,
                 endpoint_type='publicURL', service_type='workflowv2',
                 auth_token=None, user_id=None, cacert=None, insecure=False):

        if mistral_url and not isinstance(mistral_url, six.string_types):
            raise RuntimeError('Mistral url should be string')

        if auth_url:
            (mistral_url, auth_token, project_id, user_id) = (
                self.authenticate(
                    mistral_url,
                    username,
                    api_key,
                    project_name,
                    auth_url,
                    project_id,
                    endpoint_type,
                    service_type,
                    auth_token,
                    user_id,
                    cacert,
                    insecure
                )
            )

        if not mistral_url:
            mistral_url = "http://localhost:8989/v2"

        self.http_client = httpclient.HTTPClient(
            mistral_url,
            auth_token,
            project_id,
            user_id
        )

        # Create all resource managers.
        self.workbooks = workbooks.WorkbookManager(self)
        self.executions = executions.ExecutionManager(self)
        self.tasks = tasks.TaskManager(self)
        self.actions = actions.ActionManager(self)
        self.workflows = workflows.WorkflowManager(self)
        self.cron_triggers = cron_triggers.CronTriggerManager(self)
        self.environments = environments.EnvironmentManager(self)
        self.action_executions = action_executions.ActionExecutionManager(self)
        self.services = services.ServiceManager(self)
        self.members = members.MemberManager(self)

    def authenticate(self, mistral_url=None, username=None, api_key=None,
                     project_name=None, auth_url=None, project_id=None,
                     endpoint_type='publicURL', service_type='workflowv2',
                     auth_token=None, user_id=None, cacert=None,
                     insecure=False):

        if project_name and project_id:
            raise RuntimeError(
                'Only project name or project id should be set'
            )

        if username and user_id:
            raise RuntimeError(
                'Only user name or user id should be set'
            )

        keystone_client = _get_keystone_client(auth_url)

        keystone = keystone_client.Client(
            username=username,
            user_id=user_id,
            password=api_key,
            token=auth_token,
            tenant_id=project_id,
            tenant_name=project_name,
            auth_url=auth_url,
            endpoint=auth_url,
            cacert=cacert,
            insecure=insecure
        )

        keystone.authenticate()
        token = keystone.auth_token
        user_id = keystone.user_id
        project_id = keystone.project_id

        if not mistral_url:
            catalog = keystone.service_catalog.get_endpoints(
                service_type=service_type,
                endpoint_type=endpoint_type
            )
            if service_type in catalog:
                service = catalog.get(service_type)
                mistral_url = service[0].get(
                    endpoint_type) if service else None

        return mistral_url, token, project_id, user_id


def _get_keystone_client(auth_url):
    if "v2.0" in auth_url:
        from keystoneclient.v2_0 import client
    else:
        from keystoneclient.v3 import client

    return client