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BigQuery: harden snippets against transient GCS errors. #6184

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Oct 10, 2018
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BigQuery: harden snippets against transient GCS errors. #6184

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25 changes: 13 additions & 12 deletions bigquery/docs/snippets.py
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Original file line number Diff line number Diff line change
Expand Up @@ -39,8 +39,11 @@
pyarrow = None

from google.api_core import datetime_helpers
from google.api_core.exceptions import InternalServerError
from google.api_core.exceptions import ServiceUnavailable
from google.api_core.exceptions import TooManyRequests
from google.cloud import bigquery
from google.cloud import storage
from test_utils.retry import RetryErrors

ORIGINAL_FRIENDLY_NAME = 'Original friendly name'
Expand Down Expand Up @@ -68,6 +71,8 @@


retry_429 = RetryErrors(TooManyRequests)
retry_storage_errors = RetryErrors(
(TooManyRequests, InternalServerError, ServiceUnavailable))


@pytest.fixture(scope='module')
Expand All @@ -82,6 +87,8 @@ def to_delete(client):
for item in doomed:
if isinstance(item, (bigquery.Dataset, bigquery.DatasetReference)):
retry_429(client.delete_dataset)(item, delete_contents=True)
elif isinstance(item, storage.Bucket):
retry_storage_errors(item.delete)()
else:
retry_429(item.delete)()

Expand Down Expand Up @@ -1880,11 +1887,9 @@ def test_copy_table_cmek(client, to_delete):


def test_extract_table(client, to_delete):
from google.cloud import storage

bucket_name = 'extract_shakespeare_{}'.format(_millis())
storage_client = storage.Client()
bucket = retry_429(storage_client.create_bucket)(bucket_name)
bucket = retry_storage_errors(storage_client.create_bucket)(bucket_name)
to_delete.append(bucket)

# [START bigquery_extract_table]
Expand All @@ -1910,18 +1915,16 @@ def test_extract_table(client, to_delete):
project, dataset_id, table_id, destination_uri))
# [END bigquery_extract_table]

blob = bucket.get_blob('shakespeare.csv')
blob = retry_storage_errors(bucket.get_blob)('shakespeare.csv')
assert blob.exists
assert blob.size > 0
to_delete.insert(0, blob)


def test_extract_table_json(client, to_delete):
from google.cloud import storage

bucket_name = 'extract_shakespeare_json_{}'.format(_millis())
storage_client = storage.Client()
bucket = retry_429(storage_client.create_bucket)(bucket_name)
bucket = retry_storage_errors(storage_client.create_bucket)(bucket_name)
to_delete.append(bucket)

# [START bigquery_extract_table_json]
Expand All @@ -1945,18 +1948,16 @@ def test_extract_table_json(client, to_delete):
extract_job.result() # Waits for job to complete.
# [END bigquery_extract_table_json]

blob = bucket.get_blob('shakespeare.json')
blob = retry_storage_errors(bucket.get_blob)('shakespeare.json')
assert blob.exists
assert blob.size > 0
to_delete.insert(0, blob)


def test_extract_table_compressed(client, to_delete):
from google.cloud import storage

bucket_name = 'extract_shakespeare_compress_{}'.format(_millis())
storage_client = storage.Client()
bucket = retry_429(storage_client.create_bucket)(bucket_name)
bucket = retry_storage_errors(storage_client.create_bucket)(bucket_name)
to_delete.append(bucket)

# [START bigquery_extract_table_compressed]
Expand All @@ -1979,7 +1980,7 @@ def test_extract_table_compressed(client, to_delete):
extract_job.result() # Waits for job to complete.
# [END bigquery_extract_table_compressed]

blob = bucket.get_blob('shakespeare.csv.gz')
blob = retry_storage_errors(bucket.get_blob)('shakespeare.csv.gz')
assert blob.exists
assert blob.size > 0
to_delete.insert(0, blob)
Expand Down