/*
* 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.
*/
package it.pkg;
import org.apache.beam.sdk.Pipeline;
import org.apache.beam.sdk.options.PipelineOptionsFactory;
import org.apache.beam.sdk.transforms.Create;
import org.apache.beam.sdk.transforms.DoFn;
import org.apache.beam.sdk.transforms.MapElements;
import org.apache.beam.sdk.transforms.ParDo;
import org.apache.beam.sdk.transforms.SimpleFunction;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A starter example for writing Beam programs.
*
* <p>The example takes two strings, converts them to their upper-case
* representation and logs them.
*
* <p>To run this starter example locally using DirectRunner, just
* execute it without any additional parameters from your favorite development
* environment.
*
* <p>To run this starter example using managed resource in Google Cloud
* Platform, you should specify the following command-line options:
* --project=<YOUR_PROJECT_ID>
* --stagingLocation=<STAGING_LOCATION_IN_CLOUD_STORAGE>
* --runner=DataflowRunner
*/
public class StarterPipeline {
private static final Logger LOG = LoggerFactory.getLogger(StarterPipeline.class);
public static void main(String[] args) {
Pipeline p = Pipeline.create(
PipelineOptionsFactory.fromArgs(args).withValidation().create());
p.apply(Create.of("Hello", "World"))
.apply(MapElements.via(new SimpleFunction<String, String>() {
@Override
public String apply(String input) {
return input.toUpperCase();
}
}))
.apply(ParDo.of(new DoFn<String, Void>() {
@ProcessElement
public void processElement(ProcessContext c) {
LOG.info(c.element());
}
}));
p.run();
}
}