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Add version output parsing and runtime tests
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| package tfexec | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "fmt" | ||
| "regexp" | ||
| "strings" | ||
|
|
||
| "github.com/hashicorp/go-version" | ||
| ) | ||
|
|
||
| // Version returns structured output from the terraform version command including both the Terraform CLI version | ||
| // and any initialized provider versions. This will read cached values when present unless the skipCache parameter | ||
| // is set to true. | ||
| func (tf *Terraform) Version(ctx context.Context, skipCache bool) (tfVersion *version.Version, providerVersions map[string]*version.Version, err error) { | ||
| tf.versionLock.Lock() | ||
| defer tf.versionLock.Unlock() | ||
|
|
||
| if tf.execVersion == nil || skipCache { | ||
| tf.execVersion, tf.provVersions, err = tf.version(ctx) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
| } | ||
|
|
||
| return tf.execVersion, tf.provVersions, nil | ||
| } | ||
|
|
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| // version does not use the locking on the Terraform instance and should probably not be used directly, prefer Version. | ||
| func (tf *Terraform) version(ctx context.Context) (*version.Version, map[string]*version.Version, error) { | ||
| // TODO: 0.13.0-beta2? and above supports a `-json` on the version command, should add support | ||
| // for that here and fallback to string parsing | ||
|
|
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| versionCmd := tf.buildTerraformCmd(ctx, "version") | ||
| var errBuf strings.Builder | ||
| var outBuf bytes.Buffer | ||
| versionCmd.Stderr = &errBuf | ||
| versionCmd.Stdout = &outBuf | ||
|
|
||
| err := versionCmd.Run() | ||
| if err != nil { | ||
| fmt.Println(errBuf.String()) | ||
| return nil, nil, fmt.Errorf("unable to run version command: %w, %s", err, errBuf.String()) | ||
| } | ||
|
|
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| tfVersion, providerVersions, err := parseVersionOutput(outBuf.String()) | ||
| if err != nil { | ||
| return nil, nil, fmt.Errorf("unable to parse version: %w", err) | ||
| } | ||
|
|
||
| return tfVersion, providerVersions, nil | ||
| } | ||
|
|
||
| var ( | ||
| simpleVersionRe = `v?(?P<version>[0-9]+(?:\.[0-9]+)*(?:-[A-Za-z0-9\.]+)?)` | ||
|
|
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| versionOutputRe = regexp.MustCompile(`^Terraform ` + simpleVersionRe) | ||
| providerVersionOutputRe = regexp.MustCompile(`(\n\+ provider[\. ](?P<name>\S+) ` + simpleVersionRe + `)`) | ||
| ) | ||
|
|
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| func parseVersionOutput(stdout string) (*version.Version, map[string]*version.Version, error) { | ||
| stdout = strings.TrimSpace(stdout) | ||
|
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| submatches := versionOutputRe.FindStringSubmatch(stdout) | ||
| if len(submatches) != 2 { | ||
| return nil, nil, fmt.Errorf("unexpected number of version matches %d for %s", len(submatches), stdout) | ||
| } | ||
| v, err := version.NewVersion(submatches[1]) | ||
| if err != nil { | ||
| return nil, nil, fmt.Errorf("unable to parse version %q: %w", submatches[1], err) | ||
| } | ||
|
|
||
| allSubmatches := providerVersionOutputRe.FindAllStringSubmatch(stdout, -1) | ||
| provV := map[string]*version.Version{} | ||
|
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| for _, submatches := range allSubmatches { | ||
| if len(submatches) != 4 { | ||
| return nil, nil, fmt.Errorf("unexpected number of providerion version matches %d for %s", len(submatches), stdout) | ||
| } | ||
|
|
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| v, err := version.NewVersion(submatches[3]) | ||
| if err != nil { | ||
| return nil, nil, fmt.Errorf("unable to parse provider version %q: %w", submatches[3], err) | ||
| } | ||
|
|
||
| provV[submatches[2]] = v | ||
| } | ||
|
|
||
| return v, provV, err | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,166 @@ | ||
| package tfexec | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "os" | ||
| "path/filepath" | ||
| "testing" | ||
|
|
||
| "github.com/hashicorp/go-version" | ||
| ) | ||
|
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| func TestVersion(t *testing.T) { | ||
| ctx := context.Background() | ||
|
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| for _, tfv := range []string{ | ||
| "0.11.14", | ||
| "0.12.28", | ||
| "0.13.0-beta3", | ||
| } { | ||
| t.Run(tfv, func(t *testing.T) { | ||
| td := testTempDir(t) | ||
| defer os.RemoveAll(td) | ||
|
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| err := copyFile(filepath.Join(testFixtureDir, "basic/main.tf"), td) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| tf, err := NewTerraform(td, tfVersion(t, tfv)) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
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| err = tf.Init(ctx, Lock(false)) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
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| v, _, err := tf.Version(ctx, false) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| if v.String() != tfv { | ||
| t.Fatalf("expected version %q, got %q", tfv, v) | ||
| } | ||
|
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| // TODO: test/assert provider info | ||
|
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| // force execution / skip cache as well | ||
| v, _, err = tf.Version(ctx, true) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| if v.String() != tfv { | ||
| t.Fatalf("expected version %q, got %q", tfv, v) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
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| func TestParseVersionOutput(t *testing.T) { | ||
| var mustVer = func(s string) *version.Version { | ||
| v, err := version.NewVersion(s) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| return v | ||
| } | ||
|
|
||
| for i, c := range []struct { | ||
| expectedV *version.Version | ||
| expectedProviders map[string]*version.Version | ||
|
|
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| stdout string | ||
| }{ | ||
| // 0.13 tests | ||
| { | ||
| mustVer("0.13.0-dev"), nil, ` | ||
| Terraform v0.13.0-dev`, | ||
| }, | ||
| { | ||
| mustVer("0.13.0-dev"), map[string]*version.Version{ | ||
| "registry.terraform.io/hashicorp/null": mustVer("2.1.2"), | ||
| "registry.terraform.io/paultyng/null": mustVer("0.1.0"), | ||
| }, ` | ||
| Terraform v0.13.0-dev | ||
| + provider registry.terraform.io/hashicorp/null v2.1.2 | ||
| + provider registry.terraform.io/paultyng/null v0.1.0`, | ||
| }, | ||
| { | ||
| mustVer("0.13.0-dev"), nil, ` | ||
| Terraform v0.13.0-dev | ||
| Your version of Terraform is out of date! The latest version | ||
| is 0.13.1. You can update by downloading from https://www.terraform.io/downloads.html`, | ||
| }, | ||
| { | ||
| mustVer("0.13.0-dev"), map[string]*version.Version{ | ||
| "registry.terraform.io/hashicorp/null": mustVer("2.1.2"), | ||
| "registry.terraform.io/paultyng/null": mustVer("0.1.0"), | ||
| }, ` | ||
| Terraform v0.13.0-dev | ||
| + provider registry.terraform.io/hashicorp/null v2.1.2 | ||
| + provider registry.terraform.io/paultyng/null v0.1.0 | ||
| Your version of Terraform is out of date! The latest version | ||
| is 0.13.1. You can update by downloading from https://www.terraform.io/downloads.html`, | ||
| }, | ||
|
|
||
| // 0.12 tests | ||
| { | ||
| mustVer("0.12.26"), nil, ` | ||
| Terraform v0.12.26 | ||
| `, | ||
| }, | ||
| { | ||
| mustVer("0.12.26"), map[string]*version.Version{ | ||
| "null": mustVer("2.1.2"), | ||
| }, ` | ||
| Terraform v0.12.26 | ||
| + provider.null v2.1.2 | ||
| `, | ||
| }, | ||
| { | ||
| mustVer("0.12.18"), nil, ` | ||
| Terraform v0.12.18 | ||
| Your version of Terraform is out of date! The latest version | ||
| is 0.12.26. You can update by downloading from https://www.terraform.io/downloads.html | ||
| `, | ||
| }, | ||
| { | ||
| mustVer("0.12.18"), map[string]*version.Version{ | ||
| "null": mustVer("2.1.2"), | ||
| }, ` | ||
| Terraform v0.12.18 | ||
| + provider.null v2.1.2 | ||
| Your version of Terraform is out of date! The latest version | ||
| is 0.12.26. You can update by downloading from https://www.terraform.io/downloads.html | ||
| `, | ||
| }, | ||
| } { | ||
| t.Run(fmt.Sprintf("%d %s", i, c.expectedV), func(t *testing.T) { | ||
| actualV, actualProv, err := parseVersionOutput(c.stdout) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| if !c.expectedV.Equal(actualV) { | ||
| t.Fatalf("expected %s, got %s", c.expectedV, actualV) | ||
| } | ||
|
|
||
| for k, v := range c.expectedProviders { | ||
| if actual := actualProv[k]; actual == nil || !v.Equal(actual) { | ||
| t.Fatalf("expected %s for %s, got %s", v, k, actual) | ||
| } | ||
| } | ||
|
|
||
| if len(c.expectedProviders) != len(actualProv) { | ||
| t.Fatalf("expected %d providers, got %d", len(c.expectedProviders), len(actualProv)) | ||
| } | ||
| }) | ||
| } | ||
| } |