woodpecker/shared/utils/context.go

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// Copyright 2022 Woodpecker Authors
//
// Licensed 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 utils
import (
"context"
"fmt"
"os"
"os/signal"
"syscall"
)
// Returns a copy of parent context that is canceled when
// an os interrupt signal is received.
func WithContextSigtermCallback(ctx context.Context, f func()) context.Context {
ctx, cancel := context.WithCancelCause(ctx)
go func() {
receivedSignal := make(chan os.Signal, 1)
signal.Notify(receivedSignal, syscall.SIGINT, syscall.SIGTERM)
defer signal.Stop(receivedSignal)
select {
case <-ctx.Done():
case <-receivedSignal:
if f != nil {
f()
}
cancel(fmt.Errorf("received signal: %v", receivedSignal))
}
}()
return ctx
}