Google Cloud Bigtable Operators¶
BigtableCreateInstanceOperator¶
Use the BigtableCreateInstanceOperator
to create a Google Cloud Bigtable instance.
If the Cloud Bigtable instance with the given ID exists, the operator does not compare its configuration and immediately succeeds. No changes are made to the existing instance.
Using the operator¶
You can create the operator with or without project id. If project id is missing it will be retrieved from the Google Cloud connection used. Both variants are shown:
create_instance_task = BigtableCreateInstanceOperator(
project_id=GCP_PROJECT_ID,
instance_id=CBT_INSTANCE_ID,
main_cluster_id=CBT_CLUSTER_ID,
main_cluster_zone=CBT_CLUSTER_ZONE,
instance_display_name=CBT_INSTANCE_DISPLAY_NAME,
instance_type=int(CBT_INSTANCE_TYPE),
instance_labels=json.loads(CBT_INSTANCE_LABELS),
cluster_nodes=None,
cluster_storage_type=int(CBT_CLUSTER_STORAGE_TYPE),
task_id='create_instance_task',
)
create_instance_task2 = BigtableCreateInstanceOperator(
instance_id=CBT_INSTANCE_ID,
main_cluster_id=CBT_CLUSTER_ID,
main_cluster_zone=CBT_CLUSTER_ZONE,
instance_display_name=CBT_INSTANCE_DISPLAY_NAME,
instance_type=int(CBT_INSTANCE_TYPE),
instance_labels=json.loads(CBT_INSTANCE_LABELS),
cluster_nodes=int(CBT_CLUSTER_NODES),
cluster_storage_type=int(CBT_CLUSTER_STORAGE_TYPE),
task_id='create_instance_task2',
)
create_instance_task >> create_instance_task2
BigtableUpdateInstanceOperator¶
Use the BigtableUpdateInstanceOperator
to update an existing Google Cloud Bigtable instance.
Only the following configuration can be updated for an existing instance: instance_display_name, instance_type and instance_labels.
Using the operator¶
You can create the operator with or without project id. If project id is missing it will be retrieved from the Google Cloud connection used. Both variants are shown:
update_instance_task = BigtableUpdateInstanceOperator(
instance_id=CBT_INSTANCE_ID,
instance_display_name=CBT_INSTANCE_DISPLAY_NAME_UPDATED,
instance_type=int(CBT_INSTANCE_TYPE_PROD),
instance_labels=json.loads(CBT_INSTANCE_LABELS_UPDATED),
task_id='update_instance_task',
)
BigtableDeleteInstanceOperator¶
Use the BigtableDeleteInstanceOperator
to delete a Google Cloud Bigtable instance.
Using the operator¶
You can create the operator with or without project id. If project id is missing it will be retrieved from the Google Cloud connection used. Both variants are shown:
delete_instance_task = BigtableDeleteInstanceOperator(
project_id=GCP_PROJECT_ID,
instance_id=CBT_INSTANCE_ID,
task_id='delete_instance_task',
)
delete_instance_task2 = BigtableDeleteInstanceOperator(
instance_id=CBT_INSTANCE_ID,
task_id='delete_instance_task2',
)
BigtableUpdateClusterOperator¶
Use the BigtableUpdateClusterOperator
to modify number of nodes in a Cloud Bigtable cluster.
Using the operator¶
You can create the operator with or without project id. If project id is missing it will be retrieved from the Google Cloud connection used. Both variants are shown:
cluster_update_task = BigtableUpdateClusterOperator(
project_id=GCP_PROJECT_ID,
instance_id=CBT_INSTANCE_ID,
cluster_id=CBT_CLUSTER_ID,
nodes=int(CBT_CLUSTER_NODES_UPDATED),
task_id='update_cluster_task',
)
cluster_update_task2 = BigtableUpdateClusterOperator(
instance_id=CBT_INSTANCE_ID,
cluster_id=CBT_CLUSTER_ID,
nodes=int(CBT_CLUSTER_NODES_UPDATED),
task_id='update_cluster_task2',
)
cluster_update_task >> cluster_update_task2
BigtableCreateTableOperator¶
Creates a table in a Cloud Bigtable instance.
If the table with given ID exists in the Cloud Bigtable instance, the operator compares the Column Families. If the Column Families are identical operator succeeds. Otherwise, the operator fails with the appropriate error message.
Using the operator¶
You can create the operator with or without project id. If project id is missing it will be retrieved from the Google Cloud connection used. Both variants are shown:
create_table_task = BigtableCreateTableOperator(
project_id=GCP_PROJECT_ID,
instance_id=CBT_INSTANCE_ID,
table_id=CBT_TABLE_ID,
task_id='create_table',
)
create_table_task2 = BigtableCreateTableOperator(
instance_id=CBT_INSTANCE_ID,
table_id=CBT_TABLE_ID,
task_id='create_table_task2',
)
create_table_task >> create_table_task2
Advanced¶
When creating a table, you can specify the optional initial_split_keys and column_families.
Please refer to the Python Client for Google Cloud Bigtable documentation
for Table and for Column
Families.
BigtableDeleteTableOperator¶
Use the BigtableDeleteTableOperator
to delete a table in Google Cloud Bigtable.
Using the operator¶
You can create the operator with or without project id. If project id is missing it will be retrieved from the Google Cloud connection used. Both variants are shown:
delete_table_task = BigtableDeleteTableOperator(
project_id=GCP_PROJECT_ID,
instance_id=CBT_INSTANCE_ID,
table_id=CBT_TABLE_ID,
task_id='delete_table_task',
)
delete_table_task2 = BigtableDeleteTableOperator(
instance_id=CBT_INSTANCE_ID,
table_id=CBT_TABLE_ID,
task_id='delete_table_task2',
)
BigtableTableReplicationCompletedSensor¶
You can create the operator with or without project id. If project id is missing it will be retrieved from the Google Cloud connection used. Both variants are shown:
Use the BigtableTableReplicationCompletedSensor
to wait for the table to replicate fully.
The same arguments apply to this sensor as the BigtableCreateTableOperator.
Note: If the table or the Cloud Bigtable instance does not exist, this sensor waits for the table until timeout hits and does not raise any exception.
Using the operator¶
wait_for_table_replication_task = BigtableTableReplicationCompletedSensor(
project_id=GCP_PROJECT_ID,
instance_id=CBT_INSTANCE_ID,
table_id=CBT_TABLE_ID,
poke_interval=int(CBT_POKE_INTERVAL),
timeout=180,
task_id='wait_for_table_replication_task',
)
wait_for_table_replication_task2 = BigtableTableReplicationCompletedSensor(
instance_id=CBT_INSTANCE_ID,
table_id=CBT_TABLE_ID,
poke_interval=int(CBT_POKE_INTERVAL),
timeout=180,
task_id='wait_for_table_replication_task2',
)