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248c53d68d
Updates the base Docker image to install Terraform version 1.3.4 (max supported version) by default. Also updates documentation to reflect this change.
82 lines
2.1 KiB
Go
82 lines
2.1 KiB
Go
package terraform
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import (
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"context"
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"os"
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"path/filepath"
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"time"
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"github.com/gofrs/flock"
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"github.com/hashicorp/go-version"
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"github.com/hashicorp/hc-install/product"
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"github.com/hashicorp/hc-install/releases"
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"golang.org/x/xerrors"
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"cdr.dev/slog"
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)
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var (
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// TerraformVersion is the version of Terraform used internally
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// when Terraform is not available on the system.
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// NOTE: Keep this in sync with the version in scripts/Dockerfile.base.
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TerraformVersion = version.Must(version.NewVersion("1.3.4"))
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minTerraformVersion = version.Must(version.NewVersion("1.1.0"))
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maxTerraformVersion = version.Must(version.NewVersion("1.3.4"))
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terraformMinorVersionMismatch = xerrors.New("Terraform binary minor version mismatch.")
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)
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// Install implements a thread-safe, idempotent Terraform Install
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// operation.
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func Install(ctx context.Context, log slog.Logger, dir string, wantVersion *version.Version) (string, error) {
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err := os.MkdirAll(dir, 0o750)
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if err != nil {
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return "", err
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}
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// Windows requires a separate lock file.
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// See https://github.com/pinterest/knox/blob/master/client/flock_windows.go#L64
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// for precedent.
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lockFilePath := filepath.Join(dir, "lock")
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lock := flock.New(lockFilePath)
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ok, err := lock.TryLockContext(ctx, time.Millisecond*100)
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if !ok {
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return "", xerrors.Errorf("could not acquire flock for %v: %w", lockFilePath, err)
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}
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defer lock.Close()
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binPath := filepath.Join(dir, product.Terraform.BinaryName())
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hasVersion, err := versionFromBinaryPath(ctx, binPath)
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if err == nil && hasVersion.Equal(wantVersion) {
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return binPath, err
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}
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installer := &releases.ExactVersion{
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InstallDir: dir,
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Product: product.Terraform,
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Version: TerraformVersion,
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}
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installer.SetLogger(slog.Stdlib(ctx, log, slog.LevelDebug))
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log.Debug(
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ctx,
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"installing terraform",
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slog.F("dir", dir),
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slog.F("version", TerraformVersion),
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)
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path, err := installer.Install(ctx)
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if err != nil {
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return "", xerrors.Errorf("install: %w", err)
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}
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// Sanity-check: if path != binPath then future invocations of Install
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// will fail.
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if path != binPath {
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return "", xerrors.Errorf("%s should be %s", path, binPath)
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}
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return path, nil
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}
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