def test_rows_are_written(self):
client = mock.Mock()
table = bigquery.Table(tableReference=bigquery.TableReference(
projectId='project', datasetId='dataset', tableId='table'),
schema=bigquery.TableSchema())
client.tables.Get.return_value = table
write_disposition = df.io.BigQueryDisposition.WRITE_APPEND
insert_response = mock.Mock()
insert_response.insertErrors = []
client.tabledata.InsertAll.return_value = insert_response
with df.io.BigQuerySink(
'project:dataset.table',
write_disposition=write_disposition).writer(client) as writer:
writer.Write({'i': 1, 'b': True, 's': 'abc', 'f': 3.14})
sample_row = {'i': 1, 'b': True, 's': 'abc', 'f': 3.14}
expected_rows = []
json_object = bigquery.JsonObject()
for k, v in sample_row.iteritems():
json_object.additionalProperties.append(
bigquery.JsonObject.AdditionalProperty(key=k,
value=to_json_value(v)))
expected_rows.append(
bigquery.TableDataInsertAllRequest.RowsValueListEntry(
insertId='_1', # First row ID generated with prefix ''
json=json_object))
client.tabledata.InsertAll.assert_called_with(
bigquery.BigqueryTabledataInsertAllRequest(
projectId='project',
datasetId='dataset',
tableId='table',
tableDataInsertAllRequest=bigquery.TableDataInsertAllRequest(
rows=expected_rows)))
def _create_table(self, project_id, dataset_id, table_id, schema):
table = bigquery.Table(
tableReference=bigquery.TableReference(
projectId=project_id, datasetId=dataset_id, tableId=table_id),
schema=schema)
request = bigquery.BigqueryTablesInsertRequest(
projectId=project_id, datasetId=dataset_id, table=table)
response = self.client.tables.Insert(request)
# The response is a bigquery.Table instance.
return response
def test_table_with_write_disposition_append(self):
client = mock.Mock()
table = bigquery.Table(tableReference=bigquery.TableReference(
projectId='project', datasetId='dataset', tableId='table'),
schema=bigquery.TableSchema())
client.tables.Get.return_value = table
client.tables.Insert.return_value = table
write_disposition = df.io.BigQueryDisposition.WRITE_APPEND
with df.io.BigQuerySink(
'project:dataset.table',
write_disposition=write_disposition).writer(client):
pass
self.assertTrue(client.tables.Get.called)
self.assertFalse(client.tables.Delete.called)
self.assertFalse(client.tables.Insert.called)
def _parse_table_reference(table, dataset=None, project=None):
"""Parses a table reference into a (project, dataset, table) tuple.
Args:
table: The ID of the table. The ID must contain only letters
(a-z, A-Z), numbers (0-9), or underscores (_). If dataset argument is None
then the table argument must contain the entire table reference:
'DATASET.TABLE' or 'PROJECT:DATASET.TABLE'. This argument can be a
bigquery.TableReference instance in which case dataset and project are
ignored and the reference is returned as a result.
dataset: The ID of the dataset containing this table or null if the table
reference is specified entirely by the table argument.
project: The ID of the project containing this table or null if the table
reference is specified entirely by the table (and possibly dataset)
argument.
Returns:
A bigquery.TableReference object. The object has the following attributes:
projectId, datasetId, and tableId.
Raises:
ValueError: if the table reference as a string does not match the expected
format.
"""
if isinstance(table, bigquery.TableReference):
return table
table_reference = bigquery.TableReference()
# If dataset argument is not specified, the expectation is that the
# table argument will contain a full table reference instead of just a
# table name.
if dataset is None:
match = re.match(
r'^((?P<project>.+):)?(?P<dataset>\w+)\.(?P<table>\w+)$', table)
if not match:
raise ValueError(
'Expected a table reference (PROJECT:DATASET.TABLE or '
'DATASET.TABLE) instead of %s.' % table)
table_reference.projectId = match.group('project')
table_reference.datasetId = match.group('dataset')
table_reference.tableId = match.group('table')
else:
table_reference.projectId = project
table_reference.datasetId = dataset
table_reference.tableId = table
return table_reference
def test_no_table_and_create_if_needed(self):
client = mock.Mock()
table = bigquery.Table(tableReference=bigquery.TableReference(
projectId='project', datasetId='dataset', tableId='table'),
schema=bigquery.TableSchema())
client.tables.Get.side_effect = HttpError(response={'status': '404'},
url='',
content='')
client.tables.Insert.return_value = table
create_disposition = df.io.BigQueryDisposition.CREATE_IF_NEEDED
with df.io.BigQuerySink(
'project:dataset.table',
schema='somefield:INTEGER',
create_disposition=create_disposition).writer(client):
pass
self.assertTrue(client.tables.Get.called)
self.assertTrue(client.tables.Insert.called)
def test_table_empty_and_write_disposition_empty(self):
client = mock.Mock()
table = bigquery.Table(tableReference=bigquery.TableReference(
projectId='project', datasetId='dataset', tableId='table'),
schema=bigquery.TableSchema())
client.tables.Get.return_value = table
client.tabledata.List.return_value = bigquery.TableDataList(
totalRows=0)
client.tables.Insert.return_value = table
write_disposition = df.io.BigQueryDisposition.WRITE_EMPTY
with df.io.BigQuerySink(
'project:dataset.table',
write_disposition=write_disposition).writer(client):
pass
self.assertTrue(client.tables.Get.called)
self.assertTrue(client.tabledata.List.called)
self.assertFalse(client.tables.Delete.called)
self.assertFalse(client.tables.Insert.called)
def test_table_not_empty_and_write_disposition_empty(self):
client = mock.Mock()
client.tables.Get.return_value = bigquery.Table(
tableReference=bigquery.TableReference(projectId='project',
datasetId='dataset',
tableId='table'),
schema=bigquery.TableSchema())
client.tabledata.List.return_value = bigquery.TableDataList(
totalRows=1)
write_disposition = df.io.BigQueryDisposition.WRITE_EMPTY
with self.assertRaises(RuntimeError) as exn:
with df.io.BigQuerySink(
'project:dataset.table',
write_disposition=write_disposition).writer(client):
pass
self.assertEqual(
exn.exception.message,
'Table project:dataset.table is not empty but write disposition is '
'WRITE_EMPTY.')
