[spanner] fix: set timeout for polling on operations (#3488)

* [spanner] fix: set timeout for polling on operations

fixes #3471

* bump the deadline to 1200 for backup and restore

* bumped the deadline to 120

spanner/cloud-client/backup_sample.py

@@ -42,7 +42,7 @@ def create_backup(instance_id, database_id, backup_id):
  operation = backup.create()
 
  # Wait for backup operation to complete.
- operation.result()
+ operation.result(1200)
 
  # Verify that the backup is ready.
  backup.reload()
@@ -68,7 +68,7 @@ def restore_database(instance_id, new_database_id, backup_id):
  operation = new_database.restore(backup)
 
  # Wait for restore operation to complete.
- operation.result()
+ operation.result(1200)
 
  # Newly created database has restore information.
  new_database.reload()

spanner/cloud-client/snippets.py

@@ -52,7 +52,7 @@ def create_database(instance_id, database_id):
  operation = database.create()
 
  print('Waiting for operation to complete...')
- operation.result()
+ operation.result(120)
 
  print('Created database {} on instance {}'.format(
  database_id, instance_id))
@@ -213,7 +213,7 @@ def add_index(instance_id, database_id):
  'CREATE INDEX AlbumsByAlbumTitle ON Albums(AlbumTitle)'])
 
  print('Waiting for operation to complete...')
- operation.result()
+ operation.result(120)
 
  print('Added the AlbumsByAlbumTitle index.')
 # [END spanner_create_index]
@@ -306,7 +306,7 @@ def add_storing_index(instance_id, database_id):
  'STORING (MarketingBudget)'])
 
  print('Waiting for operation to complete...')
- operation.result()
+ operation.result(120)
 
  print('Added the AlbumsByAlbumTitle2 index.')
 # [END spanner_create_storing_index]
@@ -355,7 +355,7 @@ def add_column(instance_id, database_id):
  'ALTER TABLE Albums ADD COLUMN MarketingBudget INT64'])
 
  print('Waiting for operation to complete...')
- operation.result()
+ operation.result(120)
 
  print('Added the MarketingBudget column.')
 # [END spanner_add_column]
@@ -509,7 +509,7 @@ def create_table_with_timestamp(instance_id, database_id):
  ])
 
  print('Waiting for operation to complete...')
- operation.result()
+ operation.result(120)
 
  print('Created Performances table on database {} on instance {}'.format(
  database_id, instance_id))
@@ -554,7 +554,7 @@ def add_timestamp_column(instance_id, database_id):
  'OPTIONS(allow_commit_timestamp=true)'])
 
  print('Waiting for operation to complete...')
- operation.result()
+ operation.result(120)
 
  print('Altered table "Albums" on database {} on instance {}.'.format(
  database_id, instance_id))
@@ -1122,7 +1122,7 @@ def create_table_with_datatypes(instance_id, database_id):
  ])
 
  print('Waiting for operation to complete...')
- operation.result()
+ operation.result(120)
 
  print('Created Venues table on database {} on instance {}'.format(
  database_id, instance_id))