[AIRFLOW-6790] Add basic Tableau Integration

airflow/models/connection.py

@@ -71,6 +71,7 @@
     "presto": ("airflow.providers.presto.hooks.presto.PrestoHook", "presto_conn_id"),
     "redis": ("airflow.providers.redis.hooks.redis.RedisHook", "redis_conn_id"),
     "sqlite": ("airflow.providers.sqlite.hooks.sqlite.SqliteHook", "sqlite_conn_id"),
+    "tableau": ("airflow.providers.salesforce.hooks.tableau.TableauHook", "tableau_conn_id"),
     "vertica": ("airflow.providers.vertica.hooks.vertica.VerticaHook", "vertica_conn_id"),
     "wasb": ("airflow.providers.microsoft.azure.hooks.wasb.WasbHook", "wasb_conn_id"),
 }
@@ -159,6 +160,7 @@ class Connection(Base, LoggingMixin):
         ('grpc', 'GRPC Connection'),
         ('yandexcloud', 'Yandex Cloud'),
         ('livy', 'Apache Livy'),
+        ('tableau', 'Tableau'),
     ]
 
     def __init__(

airflow/providers/salesforce/example_dags/__init__.py

@@ -0,0 +1,16 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.

airflow/providers/salesforce/example_dags/example_tableau_refresh_workbook.py

@@ -0,0 +1,66 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+"""
+This is an example dag that performs two refresh operations on a Tableau Workbook aka Extract. The first one
+waits until it succeeds. The second does not wait since this is an asynchronous operation and we don't know
+when the operation actually finishes. That's why we have another task that checks only that.
+"""
+from datetime import timedelta
+
+from airflow import DAG
+from airflow.providers.salesforce.operators.tableau_refresh_workbook import TableauRefreshWorkbookOperator
+from airflow.providers.salesforce.sensors.tableau_job_status import TableauJobStatusSensor
+from airflow.utils.dates import days_ago
+
+DEFAULT_ARGS = {
+    'owner': 'airflow',
+    'depends_on_past': False,
+    'start_date': days_ago(2),
+    'email': ['airflow@example.com'],
+    'email_on_failure': False,
+    'email_on_retry': False
+}
+
+with DAG(
+    dag_id='example_tableau_refresh_workbook',
+    default_args=DEFAULT_ARGS,
+    dagrun_timeout=timedelta(hours=2),
+    schedule_interval=None,
+    tags=['example'],
+) as dag:
+    # Refreshes a workbook and waits until it succeeds.
+    task_refresh_workbook_blocking = TableauRefreshWorkbookOperator(
+        site_id='my_site',
+        workbook_name='MyWorkbook',
+        blocking=True,
+        task_id='refresh_tableau_workbook_blocking',
+    )
+    # Refreshes a workbook and does not wait until it succeeds.
+    task_refresh_workbook_non_blocking = TableauRefreshWorkbookOperator(
+        site_id='my_site',
+        workbook_name='MyWorkbook',
+        blocking=False,
+        task_id='refresh_tableau_workbook_non_blocking',
+    )
+    # The following task queries the status of the workbook refresh job until it succeeds.
+    task_check_job_status = TableauJobStatusSensor(
+        site_id='my_site',
+        job_id="{{ ti.xcom_pull(task_ids='refresh_tableau_workbook_non_blocking') }}",
+        task_id='check_tableau_job_status',
+    )
+    task_refresh_workbook_non_blocking >> task_check_job_status

airflow/providers/salesforce/hooks/tableau.py

@@ -0,0 +1,110 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+from enum import Enum
+from typing import Optional
+
+from tableauserverclient import Pager, PersonalAccessTokenAuth, Server, TableauAuth
+from tableauserverclient.server import Auth
+
+from airflow.hooks.base_hook import BaseHook
+
+
+class TableauJobFinishCode(Enum):
+    """
+    The finish code indicates the status of the job.
+
+    .. seealso:: https://help.tableau.com/current/api/rest_api/en-us/REST/rest_api_ref.htm#query_job
+
+    """
+    PENDING = -1
+    SUCCESS = 0
+    ERROR = 1
+    CANCELED = 2
+
+
+class TableauHook(BaseHook):
+    """
+    Connects to the Tableau Server Instance and allows to communicate with it.
+
+    .. seealso:: https://tableau.github.io/server-client-python/docs/
+
+    :param site_id: The id of the site where the workbook belongs to.
+        It will connect to the default site if you don't provide an id.
+    :type site_id: Optional[str]
+    :param tableau_conn_id: The Tableau Connection id containing the credentials
+        to authenticate to the Tableau Server.
+    :type tableau_conn_id: str
+    """
+
+    def __init__(self, site_id: Optional[str] = None, tableau_conn_id: str = 'tableau_default'):
+        self.tableau_conn_id = tableau_conn_id
+        self.conn = self.get_connection(self.tableau_conn_id)
+        self.site_id = site_id or self.conn.extra_dejson.get('site_id', '')
+        self.server = Server(self.conn.host, use_server_version=True)
+        self.tableau_conn = None
+
+    def __enter__(self):
+        if not self.tableau_conn:
+            self.tableau_conn = self.get_conn()
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self.server.auth.sign_out()
+
+    def get_conn(self) -> Auth.contextmgr:
+        """
+        Signs in to the Tableau Server and automatically signs out if used as ContextManager.
+
+        :return: an authorized Tableau Server Context Manager object.
+        :rtype: tableauserverclient.server.Auth.contextmgr
+        """
+        if self.conn.login and self.conn.password:
+            return self._auth_via_password()
+        if 'token_name' in self.conn.extra_dejson and 'personal_access_token' in self.conn.extra_dejson:
+            return self._auth_via_token()
+        raise NotImplementedError('No Authentication method found for given Credentials!')
+
+    def _auth_via_password(self) -> Auth.contextmgr:
+        tableau_auth = TableauAuth(
+            username=self.conn.login,
+            password=self.conn.password,
+            site_id=self.site_id
+        )
+        return self.server.auth.sign_in(tableau_auth)
+
+    def _auth_via_token(self) -> Auth.contextmgr:
+        tableau_auth = PersonalAccessTokenAuth(
+            token_name=self.conn.extra_dejson['token_name'],
+            personal_access_token=self.conn.extra_dejson['personal_access_token'],
+            site_id=self.site_id
+        )
+        return self.server.auth.sign_in_with_personal_access_token(tableau_auth)
+
+    def get_all(self, resource_name: str) -> Pager:
+        """
+        Get all items of the given resource.
+
+        .. seealso:: https://tableau.github.io/server-client-python/docs/page-through-results
+
+        :param resource_name: The name of the resource to paginate.
+            For example: jobs or workbooks
+        :type resource_name: str
+        :return: all items by returning a Pager.
+        :rtype: tableauserverclient.Pager
+        """
+        resource = getattr(self.server, resource_name)
+        return Pager(resource.get)

airflow/providers/salesforce/operators/__init__.py

@@ -0,0 +1,16 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.

airflow/providers/salesforce/operators/tableau_refresh_workbook.py

@@ -0,0 +1,94 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+from typing import Optional
+
+from tableauserverclient import WorkbookItem
+
+from airflow import AirflowException
+from airflow.models import BaseOperator
+from airflow.providers.salesforce.hooks.tableau import TableauHook
+from airflow.utils.decorators import apply_defaults
+
+
+class TableauRefreshWorkbookOperator(BaseOperator):
+    """
+    Refreshes a Tableau Workbook/Extract
+
+    .. seealso:: https://tableau.github.io/server-client-python/docs/api-ref#workbooks
+
+    :param workbook_name: The name of the workbook to refresh.
+    :type workbook_name: str
+    :param site_id: The id of the site where the workbook belongs to.
+    :type site_id: Optional[str]
+    :param blocking: By default the extract refresh will be blocking means it will wait until it has finished.
+    :type blocking: bool
+    :param tableau_conn_id: The Tableau Connection id containing the credentials
+        to authenticate to the Tableau Server.
+    :type tableau_conn_id: str
+    """
+
+    @apply_defaults
+    def __init__(self,
+                 workbook_name: str,
+                 site_id: Optional[str] = None,
+                 blocking: bool = True,
+                 tableau_conn_id: str = 'tableau_default',
+                 *args,
+                 **kwargs):
+        super().__init__(*args, **kwargs)
+        self.workbook_name = workbook_name
+        self.site_id = site_id
+        self.blocking = blocking
+        self.tableau_conn_id = tableau_conn_id
+
+    def execute(self, context: dict) -> str:
+        """
+        Executes the Tableau Extract Refresh and pushes the job id to xcom.
+
+        :param context: The task context during execution.
+        :type context: dict
+        :return: the id of the job that executes the extract refresh
+        :rtype: str
+        """
+        with TableauHook(self.site_id, self.tableau_conn_id) as tableau_hook:
+            workbook = self._get_workbook_by_name(tableau_hook)
+
+            job_id = self._refresh_workbook(tableau_hook, workbook.id)
+            if self.blocking:
+                from airflow.providers.salesforce.sensors.tableau_job_status import TableauJobStatusSensor
+                TableauJobStatusSensor(
+                    job_id=job_id,
+                    site_id=self.site_id,
+                    tableau_conn_id=self.tableau_conn_id,
+                    task_id='wait_until_succeeded',
+                    dag=None
+                ).execute(context={})
+                self.log.info('Workbook %s has been successfully refreshed.', self.workbook_name)
+            return job_id
+
+    def _get_workbook_by_name(self, tableau_hook: TableauHook) -> WorkbookItem:
+        for workbook in tableau_hook.get_all(resource_name='workbooks'):
+            if workbook.name == self.workbook_name:
+                self.log.info('Found matching workbook with id %s', workbook.id)
+                return workbook
+
+        raise AirflowException(f'Workbook {self.workbook_name} not found!')
+
+    def _refresh_workbook(self, tableau_hook: TableauHook, workbook_id: str) -> str:
+        job = tableau_hook.server.workbooks.refresh(workbook_id)
+        self.log.info('Refreshing Workbook %s...', self.workbook_name)
+        return job.id

airflow/providers/salesforce/sensors/__init__.py

@@ -0,0 +1,16 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.