mirror of https://github.com/pulumi/pulumi.git
104 lines
3.0 KiB
Go
104 lines
3.0 KiB
Go
// Copyright 2019-2024, 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 npm
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import (
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"bytes"
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"context"
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"errors"
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"fmt"
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"io"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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)
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// NPM is the canonical "Node Package Manager".
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type npmManager struct {
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executable string
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}
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// Assert that NPM is an instance of PackageManager.
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var _ PackageManager = &npmManager{}
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func newNPM() (*npmManager, error) {
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npmPath, err := exec.LookPath("npm")
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if err != nil {
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if errors.Is(err, exec.ErrNotFound) {
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return nil, errors.New("Could not find `npm` executable.\n" +
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"Install npm and make sure it is in your PATH.")
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}
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return nil, err
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}
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return &npmManager{
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executable: npmPath,
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}, nil
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}
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func (node *npmManager) Name() string {
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return "npm"
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}
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func (node *npmManager) Install(ctx context.Context, dir string, production bool, stdout, stderr io.Writer) error {
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command := node.installCmd(ctx, production)
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command.Dir = dir
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command.Stdout = stdout
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command.Stderr = stderr
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return command.Run()
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}
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func (node *npmManager) installCmd(ctx context.Context, production bool) *exec.Cmd {
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// We pass `--loglevel=error` to prevent `npm` from printing warnings about missing
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// `description`, `repository`, and `license` fields in the package.json file.
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args := []string{"install", "--loglevel=error"}
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if production {
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args = append(args, "--production")
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}
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//nolint:gosec // False positive on tained command execution. We aren't accepting input from the user here.
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return exec.CommandContext(ctx, node.executable, args...)
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}
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func (node *npmManager) Pack(ctx context.Context, dir string, stderr io.Writer) ([]byte, error) {
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//nolint:gosec // False positive on tained command execution. We aren't accepting input from the user here.
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command := exec.CommandContext(ctx, node.executable, "pack", "--loglevel=error")
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command.Dir = dir
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// We have to read the name of the file from stdout.
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var stdout bytes.Buffer
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command.Stdout = &stdout
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command.Stderr = stderr
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err := command.Run()
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if err != nil {
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return nil, err
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}
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// Next, we try to read the name of the file from stdout.
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// packfile is the name of the file containing the tarball,
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// as produced by `npm pack`.
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packFilename := strings.TrimSpace(stdout.String())
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packfile := filepath.Join(dir, packFilename)
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defer os.Remove(packfile)
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packTarball, err := os.ReadFile(packfile)
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if err != nil {
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newErr := fmt.Errorf("'npm pack' completed successfully but the package .tgz file was not generated: %w", err)
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return nil, newErr
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}
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return packTarball, nil
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}
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