4a550e308f
We signal provider cancellation by hangning a goroutine off of the plan executor's parent context. To ensure clean shutdown, this goroutine also listens on a channel that closes once the plan has finished executing. Unfortunately, we were closing this channel too early, and the close was racing with the cancellation signal. These changes ensure that the channel closes after the plan has fully completed. Fixes #1906. Fixes pulumi/pulumi-kubernetes#185.
145 lines
3.7 KiB
Go
145 lines
3.7 KiB
Go
// Copyright 2016-2018, 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 deploytest
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import (
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"sync"
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"github.com/blang/semver"
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"github.com/pkg/errors"
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"github.com/pulumi/pulumi/pkg/diag"
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"github.com/pulumi/pulumi/pkg/resource"
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"github.com/pulumi/pulumi/pkg/resource/plugin"
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"github.com/pulumi/pulumi/pkg/tokens"
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"github.com/pulumi/pulumi/pkg/workspace"
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)
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type LoadProviderFunc func() (plugin.Provider, error)
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type ProviderLoader struct {
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pkg tokens.Package
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version semver.Version
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load LoadProviderFunc
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}
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func NewProviderLoader(pkg tokens.Package, version semver.Version, load LoadProviderFunc) *ProviderLoader {
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return &ProviderLoader{
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pkg: pkg,
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version: version,
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load: load,
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}
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}
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type pluginHost struct {
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providerLoaders []*ProviderLoader
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languageRuntime plugin.LanguageRuntime
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sink diag.Sink
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statusSink diag.Sink
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providers map[plugin.Provider]struct{}
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m sync.Mutex
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}
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func NewPluginHost(sink, statusSink diag.Sink, languageRuntime plugin.LanguageRuntime,
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providerLoaders ...*ProviderLoader) plugin.Host {
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return &pluginHost{
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providerLoaders: providerLoaders,
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languageRuntime: languageRuntime,
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sink: sink,
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statusSink: statusSink,
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providers: make(map[plugin.Provider]struct{}),
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}
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}
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func (host *pluginHost) Provider(pkg tokens.Package, version *semver.Version) (plugin.Provider, error) {
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var best *ProviderLoader
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for _, l := range host.providerLoaders {
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if l.pkg != pkg {
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continue
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}
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if version != nil && l.version.LT(*version) {
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continue
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}
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if best == nil || l.version.GT(best.version) {
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best = l
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}
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}
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if best == nil {
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return nil, nil
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}
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prov, err := best.load()
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if err != nil {
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return nil, err
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}
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host.m.Lock()
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defer host.m.Unlock()
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host.providers[prov] = struct{}{}
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return prov, nil
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}
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func (host *pluginHost) LanguageRuntime(runtime string) (plugin.LanguageRuntime, error) {
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return host.languageRuntime, nil
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}
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func (host *pluginHost) SignalCancellation() error {
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host.m.Lock()
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defer host.m.Unlock()
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var err error
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for prov := range host.providers {
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if pErr := prov.SignalCancellation(); pErr != nil {
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err = pErr
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}
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}
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return err
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}
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func (host *pluginHost) Close() error {
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return nil
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}
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func (host *pluginHost) ServerAddr() string {
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panic("Host RPC address not available")
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}
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func (host *pluginHost) Log(sev diag.Severity, urn resource.URN, msg string, streamID int32) {
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host.sink.Logf(sev, diag.StreamMessage(urn, msg, streamID))
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}
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func (host *pluginHost) LogStatus(sev diag.Severity, urn resource.URN, msg string, streamID int32) {
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host.statusSink.Logf(sev, diag.StreamMessage(urn, msg, streamID))
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}
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func (host *pluginHost) Analyzer(nm tokens.QName) (plugin.Analyzer, error) {
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return nil, errors.New("unsupported")
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}
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func (host *pluginHost) CloseProvider(provider plugin.Provider) error {
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host.m.Lock()
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defer host.m.Unlock()
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delete(host.providers, provider)
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return nil
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}
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func (host *pluginHost) ListPlugins() []workspace.PluginInfo {
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return nil
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}
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func (host *pluginHost) EnsurePlugins(plugins []workspace.PluginInfo, kinds plugin.Flags) error {
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return nil
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}
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func (host *pluginHost) GetRequiredPlugins(info plugin.ProgInfo,
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kinds plugin.Flags) ([]workspace.PluginInfo, error) {
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return nil, nil
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}
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