potiuk commented on a change in pull request #4353: [AIRFLOW-3480] Add Database
Deploy/Update/Delete operators
URL: https://github.com/apache/incubator-airflow/pull/4353#discussion_r245062825
##########
File path: airflow/contrib/operators/gcp_spanner_operator.py
##########
@@ -197,3 +200,201 @@ def execute(self, context):
def sanitize_queries(queries):
if len(queries) and queries[-1] == '':
del queries[-1]
+
+
+class CloudSpannerInstanceDatabaseDeployOperator(BaseOperator):
+ """
+ Creates a new Cloud Spanner database, or if database exists,
+ the operator does nothing.
+
+
+ :param project_id: The ID of the project that owns the Cloud Spanner
Database.
+ :type project_id: str
+ :param instance_id: The Cloud Spanner instance ID.
+ :type instance_id: str
+ :param database_id: The Cloud Spanner database ID.
+ :type database_id: str
+ :param ddl_statements: The string list containing DDL for the new database.
+ :type ddl_statements: [str]
+ :param gcp_conn_id: The connection ID used to connect to Google Cloud
Platform.
+ :type gcp_conn_id: str
+ """
+ # [START gcp_spanner_database_deploy_template_fields]
+ template_fields = ('project_id', 'instance_id', 'database_id',
'ddl_statements',
+ 'gcp_conn_id')
+ template_ext = ('.sql', )
+ # [END gcp_spanner_database_deploy_template_fields]
+
+ @apply_defaults
+ def __init__(self,
+ project_id,
+ instance_id,
+ database_id,
+ ddl_statements,
+ gcp_conn_id='google_cloud_default',
+ *args, **kwargs):
+ # type: (str, str, str, [str], str, object, object) -> None
+ self.instance_id = instance_id
+ self.project_id = project_id
+ self.database_id = database_id
+ self.ddl_statements = ddl_statements
+ self.gcp_conn_id = gcp_conn_id
+ self._validate_inputs()
+ self._hook = CloudSpannerHook(gcp_conn_id=gcp_conn_id)
+ super(CloudSpannerInstanceDatabaseDeployOperator,
self).__init__(*args, **kwargs)
+
+ def _validate_inputs(self):
+ if not self.project_id:
+ raise AirflowException("The required parameter 'project_id' is
empty")
+ if not self.instance_id:
+ raise AirflowException("The required parameter 'instance_id' is
empty")
+ if not self.database_id:
+ raise AirflowException("The required parameter 'database_id' is
empty")
+ if not self.ddl_statements:
+ raise AirflowException("The required parameter 'ddl_statements' is
empty")
+
+ def execute(self, context):
+ if not self._hook.get_database(self.project_id,
+ self.instance_id,
+ self.database_id):
+ self.log.info("Creating Cloud Spanner database "
+ "'{}' in project '{}' and instance '{}'".
+ format(self.database_id, self.project_id,
self.instance_id))
+ return self._hook.create_database(project_id=self.project_id,
+ instance_id=self.instance_id,
+ database_id=self.database_id,
+
ddl_statements=self.ddl_statements)
+ else:
+ self.log.info("The database '{}' in project '{}' and instance '{}'"
Review comment:
Make sense.
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