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pardo.go
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pardo.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 regression contains pipeline regression tests.
package regression
import (
"github.com/apache/beam/sdks/go/pkg/beam"
"github.com/apache/beam/sdks/go/pkg/beam/testing/passert"
"github.com/apache/beam/sdks/go/pkg/beam/testing/ptest"
)
func directFn(elm int) int {
return elm + 1
}
// DirectParDo tests direct form output DoFns.
func DirectParDo() *beam.Pipeline {
p, s := beam.NewPipelineWithRoot()
direct := beam.ParDo(s, directFn, beam.Create(s, 1, 2, 3))
passert.Sum(s, direct, "direct", 3, 9)
return p
}
func emitFn(elm int, emit func(int)) {
emit(elm + 1)
}
// EmitParDo tests emit form output DoFns.
func EmitParDo() *beam.Pipeline {
p, s := beam.NewPipelineWithRoot()
emit := beam.ParDo(s, emitFn, beam.Create(s, 1, 2, 3))
passert.Sum(s, emit, "emit", 3, 9)
return p
}
func emit2Fn(elm int, emit, emit2 func(int)) {
emit(elm + 1)
emit2(elm + 2)
}
// MultiEmitParDo tests double emit form output DoFns.
func MultiEmitParDo() *beam.Pipeline {
p, s := beam.NewPipelineWithRoot()
emit1, emit2 := beam.ParDo2(s, emit2Fn, beam.Create(s, 1, 2, 3))
passert.Sum(s, emit1, "emit2_1", 3, 9)
passert.Sum(s, emit2, "emit2_2", 3, 12)
return p
}
func mixedFn(elm int, emit func(int)) int {
emit(elm + 2)
return elm + 1
}
// MixedOutputParDo tests mixed direct + emit form output DoFns.
func MixedOutputParDo() *beam.Pipeline {
p, s := beam.NewPipelineWithRoot()
mixed1, mixed2 := beam.ParDo2(s, mixedFn, beam.Create(s, 1, 2, 3))
passert.Sum(s, mixed1, "mixed_1", 3, 9)
passert.Sum(s, mixed2, "mixed_2", 3, 12)
return p
}
func directCountFn(_ int, values func(*int) bool) (int, error) {
sum := 0
var i int
for values(&i) {
sum += i
}
return sum, nil
}
// DirectParDoAfterGBK generates a pipeline with a direct-form
// ParDo after a GBK. See: BEAM-3978 and BEAM-4175.
func DirectParDoAfterGBK() *beam.Pipeline {
p, s, col := ptest.Create([]interface{}{1, 2, 3, 4})
keyed := beam.GroupByKey(s, beam.AddFixedKey(s, col))
sum := beam.ParDo(s, directCountFn, keyed)
passert.Equals(s, beam.DropKey(s, beam.AddFixedKey(s, sum)), 10)
return p
}
func emitCountFn(_ int, values func(*int) bool, emit func(int)) error {
sum := 0
var i int
for values(&i) {
sum += i
}
emit(sum)
return nil
}
// EmitParDoAfterGBK generates a pipeline with a emit-form
// ParDo after a GBK. See: BEAM-3978 and BEAM-4175.
func EmitParDoAfterGBK() *beam.Pipeline {
p, s, col := ptest.Create([]interface{}{1, 2, 3, 4})
keyed := beam.GroupByKey(s, beam.AddFixedKey(s, col))
sum := beam.ParDo(s, emitCountFn, keyed)
passert.Equals(s, beam.DropKey(s, beam.AddFixedKey(s, sum)), 10)
return p
}