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hello_world_write.py
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hello_world_write.py
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# Copyright 2020 Google Inc.
#
# Licensed 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.
import datetime
import apache_beam as beam
from apache_beam.io.gcp.bigtableio import WriteToBigTable
from apache_beam.options.pipeline_options import PipelineOptions
from google.cloud.bigtable import row
class BigtableOptions(PipelineOptions):
@classmethod
def _add_argparse_args(cls, parser):
parser.add_argument(
"--bigtable-project",
help="The Bigtable project ID, this can be different than your "
"Dataflow project",
default="bigtable-project",
)
parser.add_argument(
"--bigtable-instance",
help="The Bigtable instance ID",
default="bigtable-instance",
)
parser.add_argument(
"--bigtable-table",
help="The Bigtable table ID in the instance.",
default="bigtable-table",
)
class CreateRowFn(beam.DoFn):
def process(self, key):
direct_row = row.DirectRow(row_key=key)
direct_row.set_cell(
"stats_summary", b"os_build", b"android", datetime.datetime.now()
)
return [direct_row]
def run(argv=None):
"""Build and run the pipeline."""
options = BigtableOptions(argv)
with beam.Pipeline(options=options) as p:
p | beam.Create(
["phone#4c410523#20190501", "phone#4c410523#20190502"]
) | beam.ParDo(CreateRowFn()) | WriteToBigTable(
project_id=options.bigtable_project,
instance_id=options.bigtable_instance,
table_id=options.bigtable_table,
)
if __name__ == "__main__":
run()