mirror of https://github.com/pulumi/pulumi.git
88 lines
2.3 KiB
Go
88 lines
2.3 KiB
Go
// Copyright 2016-2023, Pulumi Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package backend
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import (
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"context"
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"os"
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"os/signal"
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"github.com/pulumi/pulumi/pkg/v3/engine"
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"github.com/pulumi/pulumi/pkg/v3/util/cancel"
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"github.com/pulumi/pulumi/sdk/v3/go/common/diag/colors"
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)
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type cancellationScope struct {
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context *cancel.Context
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sigint chan os.Signal
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done chan bool
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}
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func (s *cancellationScope) Context() *cancel.Context {
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return s.context
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}
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func (s *cancellationScope) Close() {
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signal.Stop(s.sigint)
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close(s.sigint)
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<-s.done
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}
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type cancellationScopeSource int
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var CancellationScopes = CancellationScopeSource(cancellationScopeSource(0))
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func (cancellationScopeSource) NewScope(events chan<- engine.Event, isPreview bool) CancellationScope {
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cancelContext, cancelSource := cancel.NewContext(context.Background())
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c := &cancellationScope{
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context: cancelContext,
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sigint: make(chan os.Signal),
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done: make(chan bool),
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}
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go func() {
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for range c.sigint {
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// If we haven't yet received a SIGINT, call the cancellation func. Otherwise call the termination
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// func.
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if cancelContext.CancelErr() == nil {
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message := "^C received; cancelling. If you would like to terminate immediately, press ^C again.\n"
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if !isPreview {
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message += colors.BrightRed + "Note that terminating immediately may lead to orphaned resources " +
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"and other inconsistencies.\n" + colors.Reset
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}
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engine.NewEvent(engine.StdoutEventPayload{
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Message: message,
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Color: colors.Always,
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})
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cancelSource.Cancel()
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} else {
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message := colors.BrightRed + "^C received; terminating" + colors.Reset
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engine.NewEvent(engine.StdoutEventPayload{
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Message: message,
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Color: colors.Always,
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})
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cancelSource.Terminate()
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}
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}
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close(c.done)
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}()
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signal.Notify(c.sigint, os.Interrupt)
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return c
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}
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