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Posted to commits@beam.apache.org by al...@apache.org on 2017/06/22 00:05:32 UTC
[1/2] beam git commit: Add example for Bigquery streaming sink
Repository: beam
Updated Branches:
refs/heads/master ae50fdd9e -> b3099bba2
Add example for Bigquery streaming sink
Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/aa65ea11
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/aa65ea11
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/aa65ea11
Branch: refs/heads/master
Commit: aa65ea11e6e0d50864de21340219b5f4d019dbc2
Parents: ae50fdd
Author: Sourabh Bajaj <so...@google.com>
Authored: Wed Jun 21 10:32:14 2017 -0700
Committer: Ahmet Altay <al...@google.com>
Committed: Wed Jun 21 17:05:22 2017 -0700
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.../apache_beam/examples/windowed_wordcount.py | 93 ++++++++++++++++++++
1 file changed, 93 insertions(+)
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http://git-wip-us.apache.org/repos/asf/beam/blob/aa65ea11/sdks/python/apache_beam/examples/windowed_wordcount.py
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diff --git a/sdks/python/apache_beam/examples/windowed_wordcount.py b/sdks/python/apache_beam/examples/windowed_wordcount.py
new file mode 100644
index 0000000..bd57847
--- /dev/null
+++ b/sdks/python/apache_beam/examples/windowed_wordcount.py
@@ -0,0 +1,93 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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.
+#
+
+"""A streaming word-counting workflow.
+
+Important: streaming pipeline support in Python Dataflow is in development
+and is not yet available for use.
+"""
+
+from __future__ import absolute_import
+
+import argparse
+import logging
+
+
+import apache_beam as beam
+import apache_beam.transforms.window as window
+
+TABLE_SCHEMA = ('word:STRING, count:INTEGER, '
+ 'window_start:TIMESTAMP, window_end:TIMESTAMP')
+
+
+def find_words(element):
+ import re
+ return re.findall(r'[A-Za-z\']+', element)
+
+
+class FormatDoFn(beam.DoFn):
+ def process(self, element, window=beam.DoFn.WindowParam):
+ ts_format = '%Y-%m-%d %H:%M:%S.%f UTC'
+ window_start = window.start.to_utc_datetime().strftime(ts_format)
+ window_end = window.end.to_utc_datetime().strftime(ts_format)
+ return [{'word': element[0],
+ 'count': element[1],
+ 'window_start':window_start,
+ 'window_end':window_end}]
+
+
+def run(argv=None):
+ """Build and run the pipeline."""
+
+ parser = argparse.ArgumentParser()
+ parser.add_argument(
+ '--input_topic', required=True,
+ help='Input PubSub topic of the form "/topics/<PROJECT>/<TOPIC>".')
+ parser.add_argument(
+ '--output_table', required=True,
+ help=
+ ('Output BigQuery table for results specified as: PROJECT:DATASET.TABLE '
+ 'or DATASET.TABLE.'))
+ known_args, pipeline_args = parser.parse_known_args(argv)
+
+ with beam.Pipeline(argv=pipeline_args) as p:
+
+ # Read the text from PubSub messages
+ lines = p | beam.io.ReadStringsFromPubSub(known_args.input_topic)
+
+ # Capitalize the characters in each line.
+ transformed = (lines
+ | 'Split' >> (beam.FlatMap(find_words)
+ .with_output_types(unicode))
+ | 'PairWithOne' >> beam.Map(lambda x: (x, 1))
+ | beam.WindowInto(window.FixedWindows(2*60, 0))
+ | 'Group' >> beam.GroupByKey()
+ | 'Count' >> beam.Map(lambda (word, ones): (word, sum(ones)))
+ | 'Format' >> beam.ParDo(FormatDoFn()))
+
+ # Write to BigQuery.
+ # pylint: disable=expression-not-assigned
+ transformed | 'Write' >> beam.io.WriteToBigQuery(
+ known_args.output_table,
+ schema=TABLE_SCHEMA,
+ create_disposition=beam.io.BigQueryDisposition.CREATE_IF_NEEDED,
+ write_disposition=beam.io.BigQueryDisposition.WRITE_APPEND)
+
+
+if __name__ == '__main__':
+ logging.getLogger().setLevel(logging.INFO)
+ run()
[2/2] beam git commit: This closes #3399
Posted by al...@apache.org.
This closes #3399
Project: http://git-wip-us.apache.org/repos/asf/beam/repo
Commit: http://git-wip-us.apache.org/repos/asf/beam/commit/b3099bba
Tree: http://git-wip-us.apache.org/repos/asf/beam/tree/b3099bba
Diff: http://git-wip-us.apache.org/repos/asf/beam/diff/b3099bba
Branch: refs/heads/master
Commit: b3099bba2d1b26a3bdd9df0f92d5d2f85f065e21
Parents: ae50fdd aa65ea1
Author: Ahmet Altay <al...@google.com>
Authored: Wed Jun 21 17:05:24 2017 -0700
Committer: Ahmet Altay <al...@google.com>
Committed: Wed Jun 21 17:05:24 2017 -0700
----------------------------------------------------------------------
.../apache_beam/examples/windowed_wordcount.py | 93 ++++++++++++++++++++
1 file changed, 93 insertions(+)
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