mirror of https://github.com/pulumi/pulumi.git
79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
// Copyright 2024, 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 cmdutil
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import (
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"errors"
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"io"
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"os"
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"sync"
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"github.com/pulumi/pulumi/sdk/v3/go/common/resource/plugin"
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)
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// InstallDependencies installs dependencies for the given language runtime, blocking until the installation is
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// complete. Standard output and error are streamed to os.Stdout and os.Stderr, respectively, and any errors encountered
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// during the installation or streaming of its output are returned.
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func InstallDependencies(lang plugin.LanguageRuntime, req plugin.InstallDependenciesRequest) error {
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stdout, stderr, done, err := lang.InstallDependencies(req)
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if err != nil {
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return err
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}
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// We'll use a WaitGroup to wait for the stdout (1) and stderr (2) readers to be fully drained, as well as for the
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// done channel to close (3), before we return.
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var wg sync.WaitGroup
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wg.Add(3)
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errorChan := make(chan error, 3)
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go func() {
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defer wg.Done()
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if _, err := io.Copy(os.Stdout, stdout); err != nil {
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errorChan <- err
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}
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}()
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go func() {
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defer wg.Done()
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if _, err := io.Copy(os.Stderr, stderr); err != nil {
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errorChan <- err
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}
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}()
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go func() {
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defer wg.Done()
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if err := <-done; err != nil {
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errorChan <- err
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}
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}()
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var errs []error
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wg.Wait()
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close(errorChan)
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for err := range errorChan {
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if err != nil {
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errs = append(errs, err)
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}
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}
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err = errors.Join(errs...)
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if err != nil {
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return err
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}
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return nil
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}
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