# -*- coding: utf-8 -*-
#
# 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.
"""
Example Airflow DAG that creates, patches and deletes a Cloud SQL instance, and also
creates, patches and deletes a database inside the instance, in Google Cloud Platform.
This DAG relies on the following OS environment variables
https://airflow.apache.org/concepts.html#variables
* GCP_PROJECT_ID - Google Cloud Platform project for the Cloud SQL instance.
* INSTANCE_NAME - Name of the Cloud SQL instance.
* DB_NAME - Name of the database inside a Cloud SQL instance.
"""
import os
from airflow import models
from airflow.contrib.operators.gcp_sql_operator import CloudSqlInstanceCreateOperator, \
CloudSqlInstancePatchOperator, CloudSqlInstanceDeleteOperator, \
CloudSqlInstanceDatabaseCreateOperator, CloudSqlInstanceDatabasePatchOperator, \
CloudSqlInstanceDatabaseDeleteOperator, CloudSqlInstanceExportOperator, \
CloudSqlInstanceImportOperator
from airflow.contrib.operators.gcs_acl_operator import \
GoogleCloudStorageBucketCreateAclEntryOperator, \
GoogleCloudStorageObjectCreateAclEntryOperator
from six.moves.urllib.parse import urlsplit
from airflow.utils.dates import days_ago
# [START howto_operator_cloudsql_arguments]
GCP_PROJECT_ID = os.environ.get('GCP_PROJECT_ID', 'example-project')
INSTANCE_NAME = os.environ.get('GCSQL_MYSQL_INSTANCE_NAME', 'test-mysql')
INSTANCE_NAME2 = os.environ.get('GCSQL_MYSQL_INSTANCE_NAME2', 'test-mysql2')
DB_NAME = os.environ.get('GCSQL_MYSQL_DATABASE_NAME', 'testdb')
# [END howto_operator_cloudsql_arguments]
# [START howto_operator_cloudsql_export_import_arguments]
EXPORT_URI = os.environ.get('GCSQL_MYSQL_EXPORT_URI', 'gs://bucketName/fileName')
IMPORT_URI = os.environ.get('GCSQL_MYSQL_IMPORT_URI', 'gs://bucketName/fileName')
# [END howto_operator_cloudsql_export_import_arguments]
# Bodies below represent Cloud SQL instance resources:
# https://cloud.google.com/sql/docs/mysql/admin-api/v1beta4/instances
# [START howto_operator_cloudsql_create_arguments]
FAILOVER_REPLICA_NAME = INSTANCE_NAME + "-failover-replica"
READ_REPLICA_NAME = INSTANCE_NAME + "-read-replica"
# [END howto_operator_cloudsql_create_arguments]
# [START howto_operator_cloudsql_create_body]
body = {
"name": INSTANCE_NAME,
"settings": {
"tier": "db-n1-standard-1",
"backupConfiguration": {
"binaryLogEnabled": True,
"enabled": True,
"startTime": "05:00"
},
"activationPolicy": "ALWAYS",
"dataDiskSizeGb": 30,
"dataDiskType": "PD_SSD",
"databaseFlags": [],
"ipConfiguration": {
"ipv4Enabled": True,
"requireSsl": True,
},
"locationPreference": {
"zone": "europe-west4-a"
},
"maintenanceWindow": {
"hour": 5,
"day": 7,
"updateTrack": "canary"
},
"pricingPlan": "PER_USE",
"replicationType": "ASYNCHRONOUS",
"storageAutoResize": True,
"storageAutoResizeLimit": 0,
"userLabels": {
"my-key": "my-value"
}
},
"failoverReplica": {
"name": FAILOVER_REPLICA_NAME
},
"databaseVersion": "MYSQL_5_7",
"region": "europe-west4",
}
# [END howto_operator_cloudsql_create_body]
body2 = {
"name": INSTANCE_NAME2,
"settings": {
"tier": "db-n1-standard-1",
},
"databaseVersion": "MYSQL_5_7",
"region": "europe-west4",
}
# [START howto_operator_cloudsql_create_replica]
read_replica_body = {
"name": READ_REPLICA_NAME,
"settings": {
"tier": "db-n1-standard-1",
},
"databaseVersion": "MYSQL_5_7",
"region": "europe-west4",
"masterInstanceName": INSTANCE_NAME,
}
# [END howto_operator_cloudsql_create_replica]
# [START howto_operator_cloudsql_patch_body]
patch_body = {
"name": INSTANCE_NAME,
"settings": {
"dataDiskSizeGb": 35,
"maintenanceWindow": {
"hour": 3,
"day": 6,
"updateTrack": "canary"
},
"userLabels": {
"my-key-patch": "my-value-patch"
}
}
}
# [END howto_operator_cloudsql_patch_body]
# [START howto_operator_cloudsql_export_body]
export_body = {
"exportContext": {
"fileType": "sql",
"uri": EXPORT_URI,
"sqlExportOptions": {
"schemaOnly": False
}
}
}
# [END howto_operator_cloudsql_export_body]
# [START howto_operator_cloudsql_import_body]
import_body = {
"importContext": {
"fileType": "sql",
"uri": IMPORT_URI
}
}
# [END howto_operator_cloudsql_import_body]
# [START howto_operator_cloudsql_db_create_body]
db_create_body = {
"instance": INSTANCE_NAME,
"name": DB_NAME,
"project": GCP_PROJECT_ID
}
# [END howto_operator_cloudsql_db_create_body]
# [START howto_operator_cloudsql_db_patch_body]
db_patch_body = {
"charset": "utf16",
"collation": "utf16_general_ci"
}
# [END howto_operator_cloudsql_db_patch_body]
default_args = {
'start_date': days_ago(1)
}
with models.DAG(
'example_gcp_sql',
default_args=default_args,
schedule_interval=None # Override to match your needs
) as dag:
def next_dep(task, prev):
prev >> task
return task
# ############################################## #
# ### INSTANCES SET UP ######################### #
# ############################################## #
# [START howto_operator_cloudsql_create]
sql_instance_create_task = CloudSqlInstanceCreateOperator(
project_id=GCP_PROJECT_ID,
body=body,
instance=INSTANCE_NAME,
task_id='sql_instance_create_task'
)
# [END howto_operator_cloudsql_create]
prev_task = sql_instance_create_task
sql_instance_create_2_task = CloudSqlInstanceCreateOperator(
project_id=GCP_PROJECT_ID,
body=body2,
instance=INSTANCE_NAME2,
task_id='sql_instance_create_task2'
)
# [END howto_operator_cloudsql_create]
prev_task = sql_instance_create_task
prev_task = next_dep(sql_instance_create_2_task, prev_task)
sql_instance_read_replica_create = CloudSqlInstanceCreateOperator(
project_id=GCP_PROJECT_ID,
body=read_replica_body,
instance=INSTANCE_NAME2,
task_id='sql_instance_read_replica_create'
)
prev_task = next_dep(sql_instance_read_replica_create, prev_task)
# ############################################## #
# ### MODIFYING INSTANCE AND ITS DATABASE ###### #
# ############################################## #
# [START howto_operator_cloudsql_patch]
sql_instance_patch_task = CloudSqlInstancePatchOperator(
project_id=GCP_PROJECT_ID,
body=patch_body,
instance=INSTANCE_NAME,
task_id='sql_instance_patch_task'
)
sql_instance_patch_task2 = CloudSqlInstancePatchOperator(
body=patch_body,
instance=INSTANCE_NAME,
task_id='sql_instance_patch_task2'
)
# [END howto_operator_cloudsql_patch]
prev_task = next_dep(sql_instance_patch_task, prev_task)
prev_task = next_dep(sql_instance_patch_task2, prev_task)
# [START howto_operator_cloudsql_db_create]
sql_db_create_task = CloudSqlInstanceDatabaseCreateOperator(
project_id=GCP_PROJECT_ID,
body=db_create_body,
instance=INSTANCE_NAME,
task_id='sql_db_create_task'
)
sql_db_create_task2 = CloudSqlInstanceDatabaseCreateOperator(
body=db_create_body,
instance=INSTANCE_NAME,
task_id='sql_db_create_task2'
)
# [END howto_operator_cloudsql_db_create]
prev_task = next_dep(sql_db_create_task, prev_task)
prev_task = next_dep(sql_db_create_task2, prev_task)
# [START howto_operator_cloudsql_db_patch]
sql_db_patch_task = CloudSqlInstanceDatabasePatchOperator(
project_id=GCP_PROJECT_ID,
body=db_patch_body,
instance=INSTANCE_NAME,
database=DB_NAME,
task_id='sql_db_patch_task'
)
sql_db_patch_task2 = CloudSqlInstanceDatabasePatchOperator(
body=db_patch_body,
instance=INSTANCE_NAME,
database=DB_NAME,
task_id='sql_db_patch_task2'
)
# [END howto_operator_cloudsql_db_patch]
prev_task = next_dep(sql_db_patch_task, prev_task)
prev_task = next_dep(sql_db_patch_task2, prev_task)
# ############################################## #
# ### EXPORTING SQL FROM INSTANCE 1 ############ #
# ############################################## #
export_url_split = urlsplit(EXPORT_URI)
# For export to work we need to add the Cloud SQL instance's Service Account
# write access to the destination GCS bucket.
# [START howto_operator_cloudsql_export_gcs_permissions]
sql_gcp_add_bucket_permission_task = GoogleCloudStorageBucketCreateAclEntryOperator(
entity="user-{{ task_instance.xcom_pull("
"'sql_instance_create_task', key='service_account_email') "
"}}",
role="WRITER",
bucket=export_url_split[1], # netloc (bucket)
task_id='sql_gcp_add_bucket_permission_task'
)
# [END howto_operator_cloudsql_export_gcs_permissions]
prev_task = next_dep(sql_gcp_add_bucket_permission_task, prev_task)
# [START howto_operator_cloudsql_export]
sql_export_task = CloudSqlInstanceExportOperator(
project_id=GCP_PROJECT_ID,
body=export_body,
instance=INSTANCE_NAME,
task_id='sql_export_task'
)
sql_export_task2 = CloudSqlInstanceExportOperator(
body=export_body,
instance=INSTANCE_NAME,
task_id='sql_export_task2'
)
# [END howto_operator_cloudsql_export]
prev_task = next_dep(sql_export_task, prev_task)
prev_task = next_dep(sql_export_task2, prev_task)
# ############################################## #
# ### IMPORTING SQL TO INSTANCE 2 ############## #
# ############################################## #
import_url_split = urlsplit(IMPORT_URI)
# For import to work we need to add the Cloud SQL instance's Service Account
# read access to the target GCS object.
# [START howto_operator_cloudsql_import_gcs_permissions]
sql_gcp_add_object_permission_task = GoogleCloudStorageObjectCreateAclEntryOperator(
entity="user-{{ task_instance.xcom_pull("
"'sql_instance_create_task2', key='service_account_email')"
" }}",
role="READER",
bucket=import_url_split[1], # netloc (bucket)
object_name=import_url_split[2][1:], # path (strip first '/')
task_id='sql_gcp_add_object_permission_task',
)
prev_task = next_dep(sql_gcp_add_object_permission_task, prev_task)
# For import to work we also need to add the Cloud SQL instance's Service Account
# write access to the whole bucket!.
sql_gcp_add_bucket_permission_2_task = GoogleCloudStorageBucketCreateAclEntryOperator(
entity="user-{{ task_instance.xcom_pull("
"'sql_instance_create_task2', key='service_account_email') "
"}}",
role="WRITER",
bucket=import_url_split[1], # netloc
task_id='sql_gcp_add_bucket_permission_2_task',
)
# [END howto_operator_cloudsql_import_gcs_permissions]
prev_task = next_dep(sql_gcp_add_bucket_permission_2_task, prev_task)
# [START howto_operator_cloudsql_import]
sql_import_task = CloudSqlInstanceImportOperator(
project_id=GCP_PROJECT_ID,
body=import_body,
instance=INSTANCE_NAME2,
task_id='sql_import_task'
)
sql_import_task2 = CloudSqlInstanceImportOperator(
body=import_body,
instance=INSTANCE_NAME2,
task_id='sql_import_task2'
)
# [END howto_operator_cloudsql_import]
prev_task = next_dep(sql_import_task, prev_task)
prev_task = next_dep(sql_import_task2, prev_task)
# ############################################## #
# ### DELETING A DATABASE FROM AN INSTANCE ##### #
# ############################################## #
# [START howto_operator_cloudsql_db_delete]
sql_db_delete_task = CloudSqlInstanceDatabaseDeleteOperator(
project_id=GCP_PROJECT_ID,
instance=INSTANCE_NAME,
database=DB_NAME,
task_id='sql_db_delete_task'
)
sql_db_delete_task2 = CloudSqlInstanceDatabaseDeleteOperator(
instance=INSTANCE_NAME,
database=DB_NAME,
task_id='sql_db_delete_task2'
)
# [END howto_operator_cloudsql_db_delete]
prev_task = next_dep(sql_db_delete_task, prev_task)
prev_task = next_dep(sql_db_delete_task2, prev_task)
# ############################################## #
# ### INSTANCES TEAR DOWN ###################### #
# ############################################## #
# [START howto_operator_cloudsql_replicas_delete]
sql_instance_failover_replica_delete_task = CloudSqlInstanceDeleteOperator(
project_id=GCP_PROJECT_ID,
instance=FAILOVER_REPLICA_NAME,
task_id='sql_instance_failover_replica_delete_task'
)
sql_instance_read_replica_delete_task = CloudSqlInstanceDeleteOperator(
project_id=GCP_PROJECT_ID,
instance=READ_REPLICA_NAME,
task_id='sql_instance_read_replica_delete_task'
)
# [END howto_operator_cloudsql_replicas_delete]
prev_task = next_dep(sql_instance_failover_replica_delete_task, prev_task)
prev_task = next_dep(sql_instance_read_replica_delete_task, prev_task)
# [START howto_operator_cloudsql_delete]
sql_instance_delete_task = CloudSqlInstanceDeleteOperator(
project_id=GCP_PROJECT_ID,
instance=INSTANCE_NAME,
task_id='sql_instance_delete_task'
)
sql_instance_delete_task2 = CloudSqlInstanceDeleteOperator(
instance=INSTANCE_NAME2,
task_id='sql_instance_delete_task2'
)
# [END howto_operator_cloudsql_delete]
prev_task = next_dep(sql_instance_delete_task, prev_task)
sql_instance_delete_2_task = CloudSqlInstanceDeleteOperator(
project_id=GCP_PROJECT_ID,
instance=INSTANCE_NAME2,
task_id='sql_instance_delete_2_task'
)
prev_task = next_dep(sql_instance_delete_2_task, prev_task)