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cache_hooks.go
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/
cache_hooks.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 harness
import (
"context"
"fmt"
"github.com/apache/beam/sdks/v2/go/pkg/beam/core/util/hooks"
)
var (
cacheSize int = 0
)
func init() {
hf := func(opts []string) hooks.Hook {
return hooks.Hook{
Init: func(ctx context.Context) (context.Context, error) {
if len(opts) == 0 {
return ctx, nil
}
if len(opts) > 1 {
return ctx, fmt.Errorf("expected 1 option, got %v: %v", len(opts), opts)
}
var count int
_, err := fmt.Sscan(opts[0], &count)
if err != nil {
return nil, err
}
cacheSize = count
return ctx, nil
},
}
}
hooks.RegisterHook("beam:go:hook:sideinputcache:capacity", hf)
}