/
synthetic.go
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/
synthetic.go
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// 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 synthetic contains pipelines for testing synthetic steps and sources.
package synthetic
import (
"github.com/apache/beam/sdks/v2/go/pkg/beam"
"github.com/apache/beam/sdks/v2/go/pkg/beam/io/synthetic"
"github.com/apache/beam/sdks/v2/go/pkg/beam/testing/passert"
)
// SimplePipeline creates a very simple synthetic pipeline to test that basic
// synthetic pipelines work.
func SimplePipeline() *beam.Pipeline {
p, s := beam.NewPipelineWithRoot()
const size = 100
src := synthetic.SourceSingle(s,
synthetic.DefaultSourceConfig().NumElements(size).Build())
step := synthetic.Step(s, synthetic.DefaultStepConfig().Build(), src)
passert.Count(s, step, "out", size)
return p
}
// SplittablePipeline creates a simple synthetic pipeline that exercises
// splitting-related behavior.
func SplittablePipeline() *beam.Pipeline {
p, s := beam.NewPipelineWithRoot()
const srcSize1 = 50
const srcSize2 = 10
const stepMult = 500
const outCount = (srcSize1 + srcSize2) * stepMult
configs := beam.Create(s,
synthetic.DefaultSourceConfig().NumElements(srcSize1).InitialSplits(3).Build(),
synthetic.DefaultSourceConfig().NumElements(srcSize2).InitialSplits(3).Build())
src := synthetic.Source(s, configs)
step := synthetic.Step(
s,
synthetic.
DefaultStepConfig().
OutputPerInput(stepMult).
Splittable(true).
InitialSplits(8).
Build(),
src)
passert.Count(s, step, "out", outCount)
return p
}