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plugin/discovery: Return tfdiags from Get

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Allows us to surface warnings to the user using the tfdiags interfaces.
pull/20674/head
Justin Campbell 7 years ago
parent f799a133e3
commit 24e13d8ec1
6 changed files with 39 additions and 33 deletions
Show Stats Download Patch File Download Diff File

3
command/init.go
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@ -494,7 +494,8 @@ func (c *InitCommand) getProviders(earlyConfig *earlyconfig.Config, state *state
}
for provider, reqd := range missing {
_, err := c.providerInstaller.Get(provider, reqd.Versions)
_, providerDiags, err := c.providerInstaller.Get(provider, reqd.Versions)
diags = diags.Append(providerDiags)
if err != nil {
constraint := reqd.Versions.String()

9
command/init_test.go
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@ -24,6 +24,7 @@ import (
"github.com/hashicorp/terraform/states"
"github.com/hashicorp/terraform/states/statemgr"
"github.com/hashicorp/terraform/terraform"
"github.com/hashicorp/terraform/tfdiags"
)
func TestInit_empty(t *testing.T) {
@ -964,8 +965,8 @@ func TestInit_getProviderHaveLegacyVersion(t *testing.T) {
testingOverrides: metaOverridesForProvider(testProvider()),
Ui: ui,
},
providerInstaller: callbackPluginInstaller(func(provider string, req discovery.Constraints) (discovery.PluginMeta, error) {
return discovery.PluginMeta{}, fmt.Errorf("EXPECTED PROVIDER ERROR %s", provider)
providerInstaller: callbackPluginInstaller(func(provider string, req discovery.Constraints) (discovery.PluginMeta, tfdiags.Diagnostics, error) {
return discovery.PluginMeta{}, tfdiags.Diagnostics{}, fmt.Errorf("EXPECTED PROVIDER ERROR %s", provider)
}),
}
@ -1174,9 +1175,9 @@ func TestInit_pluginDirProvidersDoesNotGet(t *testing.T) {
c := &InitCommand{
Meta: m,
providerInstaller: callbackPluginInstaller(func(provider string, req discovery.Constraints) (discovery.PluginMeta, error) {
providerInstaller: callbackPluginInstaller(func(provider string, req discovery.Constraints) (discovery.PluginMeta, tfdiags.Diagnostics, error) {
t.Fatalf("plugin installer should not have been called for %q", provider)
return discovery.PluginMeta{}, nil
return discovery.PluginMeta{}, tfdiags.Diagnostics{}, nil
}),
}

16
command/plugins_test.go
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@ -11,6 +11,7 @@ import (
"github.com/hashicorp/terraform/plugin/discovery"
"github.com/hashicorp/terraform/providers"
"github.com/hashicorp/terraform/terraform"
"github.com/hashicorp/terraform/tfdiags"
)
func TestMultiVersionProviderResolver(t *testing.T) {
@ -146,16 +147,17 @@ func (i *mockProviderInstaller) FileName(provider, version string) string {
return fmt.Sprintf("terraform-provider-%s_v%s_x4", provider, version)
}
func (i *mockProviderInstaller) Get(provider string, req discovery.Constraints) (discovery.PluginMeta, error) {
func (i *mockProviderInstaller) Get(provider string, req discovery.Constraints) (discovery.PluginMeta, tfdiags.Diagnostics, error) {
var diags tfdiags.Diagnostics
noMeta := discovery.PluginMeta{}
versions := i.Providers[provider]
if len(versions) == 0 {
return noMeta, fmt.Errorf("provider %q not found", provider)
return noMeta, diags, fmt.Errorf("provider %q not found", provider)
}
err := os.MkdirAll(i.Dir, 0755)
if err != nil {
return noMeta, fmt.Errorf("error creating plugins directory: %s", err)
return noMeta, diags, fmt.Errorf("error creating plugins directory: %s", err)
}
for _, v := range versions {
@ -170,18 +172,18 @@ func (i *mockProviderInstaller) Get(provider string, req discovery.Constraints)
path := filepath.Join(i.Dir, name)
f, err := os.Create(path)
if err != nil {
return noMeta, fmt.Errorf("error fetching provider: %s", err)
return noMeta, diags, fmt.Errorf("error fetching provider: %s", err)
}
f.Close()
return discovery.PluginMeta{
Name: provider,
Version: discovery.VersionStr(v),
Path: path,
}, nil
}, diags, nil
}
}
return noMeta, fmt.Errorf("no suitable version for provider %q found with constraints %s", provider, req)
return noMeta, diags, fmt.Errorf("no suitable version for provider %q found with constraints %s", provider, req)
}
func (i *mockProviderInstaller) PurgeUnused(map[string]discovery.PluginMeta) (discovery.PluginMetaSet, error) {
@ -197,7 +199,7 @@ func (i *mockProviderInstaller) PurgeUnused(map[string]discovery.PluginMeta) (di
type callbackPluginInstaller func(provider string, req discovery.Constraints) (discovery.PluginMeta, error)
func (cb callbackPluginInstaller) Get(provider string, req discovery.Constraints) (discovery.PluginMeta, error) {
func (cb callbackPluginInstaller) Get(provider string, req discovery.Constraints) (discovery.PluginMeta, tfdiags.Diagnostics, error) {
return cb(provider, req)
}

32
plugin/discovery/get.go
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@ -21,6 +21,7 @@ import (
"github.com/hashicorp/terraform/registry/regsrc"
"github.com/hashicorp/terraform/registry/response"
"github.com/hashicorp/terraform/svchost/disco"
"github.com/hashicorp/terraform/tfdiags"
tfversion "github.com/hashicorp/terraform/version"
"github.com/mitchellh/cli"
)
@ -54,7 +55,7 @@ func init() {
// An Installer maintains a local cache of plugins by downloading plugins
// from an online repository.
type Installer interface {
Get(name string, req Constraints) (PluginMeta, error)
Get(name string, req Constraints) (PluginMeta, tfdiags.Diagnostics, error)
PurgeUnused(used map[string]PluginMeta) (removed PluginMetaSet, err error)
}
@ -111,7 +112,9 @@ type ProviderInstaller struct {
// are produced under the assumption that if presented to the user they will
// be presented alongside context about what is being installed, and thus the
// error messages do not redundantly include such information.
func (i *ProviderInstaller) Get(provider string, req Constraints) (PluginMeta, error) {
func (i *ProviderInstaller) Get(provider string, req Constraints) (PluginMeta, tfdiags.Diagnostics, error) {
var diags tfdiags.Diagnostics
// a little bit of initialization.
if i.OS == "" {
i.OS = runtime.GOOS
@ -129,19 +132,19 @@ func (i *ProviderInstaller) Get(provider string, req Constraints) (PluginMeta, e
// TODO: return multiple errors
if err != nil {
if registry.IsServiceNotProvided(err) {
return PluginMeta{}, err
return PluginMeta{}, diags, err
}
return PluginMeta{}, ErrorNoSuchProvider
return PluginMeta{}, diags, ErrorNoSuchProvider
}
if len(allVersions.Versions) == 0 {
return PluginMeta{}, ErrorNoSuitableVersion
return PluginMeta{}, diags, ErrorNoSuitableVersion
}
providerSource := allVersions.ID
// Filter the list of plugin versions to those which meet the version constraints
versions := allowedVersions(allVersions, req)
if len(versions) == 0 {
return PluginMeta{}, ErrorNoSuitableVersion
return PluginMeta{}, diags, ErrorNoSuitableVersion
}
// sort them newest to oldest. The newest version wins!
@ -152,7 +155,7 @@ func (i *ProviderInstaller) Get(provider string, req Constraints) (PluginMeta, e
if err := i.checkPlatformCompatibility(versions[0]); err != nil {
versions = i.platformCompatibleVersions(versions)
if len(versions) == 0 {
return PluginMeta{}, ErrorNoVersionCompatibleWithPlatform
return PluginMeta{}, diags, ErrorNoVersionCompatibleWithPlatform
}
}
@ -165,7 +168,7 @@ func (i *ProviderInstaller) Get(provider string, req Constraints) (PluginMeta, e
closestMatch, err := i.findClosestProtocolCompatibleVersion(allVersions.Versions)
if err != nil {
// No operation here if we can't find a version with compatible protocol
return PluginMeta{}, err
return PluginMeta{}, diags, err
}
// Prompt version suggestion to UI based on closest protocol match
@ -182,7 +185,7 @@ func (i *ProviderInstaller) Get(provider string, req Constraints) (PluginMeta, e
constraintStr = "(any version)"
}
return PluginMeta{}, errwrap.Wrap(ErrorVersionIncompatible, fmt.Errorf(fmt.Sprintf(
return PluginMeta{}, diags, errwrap.Wrap(ErrorVersionIncompatible, fmt.Errorf(fmt.Sprintf(
errMsg, provider, v.String(), tfversion.String(),
closestVersion.String(), closestVersion.MinorUpgradeConstraintStr(), constraintStr)))
}
@ -193,7 +196,7 @@ func (i *ProviderInstaller) Get(provider string, req Constraints) (PluginMeta, e
if !i.SkipVerify {
sha256, err := i.getProviderChecksum(downloadURLs)
if err != nil {
return PluginMeta{}, err
return PluginMeta{}, diags, err
}
// add the checksum parameter for go-getter to verify the download for us.
@ -207,7 +210,7 @@ func (i *ProviderInstaller) Get(provider string, req Constraints) (PluginMeta, e
log.Printf("[DEBUG] getting provider %q version %q", printedProviderName, versionMeta.Version)
err = i.install(provider, v, providerURL)
if err != nil {
return PluginMeta{}, err
return PluginMeta{}, diags, err
}
// Find what we just installed
@ -224,7 +227,7 @@ func (i *ProviderInstaller) Get(provider string, req Constraints) (PluginMeta, e
// This should never happen. Suggests that the release archive
// contains an executable file whose name doesn't match the
// expected convention.
return PluginMeta{}, fmt.Errorf(
return PluginMeta{}, diags, fmt.Errorf(
"failed to find installed plugin version %s; this is a bug in Terraform and should be reported",
versionMeta.Version,
)
@ -235,7 +238,7 @@ func (i *ProviderInstaller) Get(provider string, req Constraints) (PluginMeta, e
// particular version was re-released with a different
// executable filename. We consider releases as immutable, so
// this is an error.
return PluginMeta{}, fmt.Errorf(
return PluginMeta{}, diags, fmt.Errorf(
"multiple plugins installed for version %s; this is a bug in Terraform and should be reported",
versionMeta.Version,
)
@ -243,8 +246,7 @@ func (i *ProviderInstaller) Get(provider string, req Constraints) (PluginMeta, e
// By now we know we have exactly one meta, and so "Newest" will
// return that one.
return metas.Newest(), nil
return metas.Newest(), diags, nil
}
func (i *ProviderInstaller) install(provider string, version Version, url string) error {

10
plugin/discovery/get_test.go
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@ -415,7 +415,7 @@ func TestProviderInstallerGet(t *testing.T) {
Ui: cli.NewMockUi(),
registry: registry.NewClient(Disco(server), nil),
}
_, err = i.Get("test", AllVersions)
_, _, err = i.Get("test", AllVersions)
if err != ErrorNoVersionCompatibleWithPlatform {
t.Fatal("want error for incompatible version")
@ -432,20 +432,20 @@ func TestProviderInstallerGet(t *testing.T) {
}
{
_, err := i.Get("test", ConstraintStr(">9.0.0").MustParse())
_, _, err := i.Get("test", ConstraintStr(">9.0.0").MustParse())
if err != ErrorNoSuitableVersion {
t.Fatal("want error for mismatching constraints")
}
}
{
_, err := i.Get("nonexist", AllVersions)
_, _, err := i.Get("nonexist", AllVersions)
if err != ErrorNoSuchProvider {
t.Fatal("want error for no such provider")
}
}
gotMeta, err := i.Get("test", AllVersions)
gotMeta, _, err := i.Get("test", AllVersions)
if err != nil {
t.Fatal(err)
}
@ -503,7 +503,7 @@ func TestProviderInstallerGet_cache(t *testing.T) {
Arch: "mockarch",
}
gotMeta, err := i.Get("test", AllVersions)
gotMeta, _, err := i.Get("test", AllVersions)
if err != nil {
t.Fatal(err)
}

2
tools/terraform-bundle/package.go
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@ -181,7 +181,7 @@ func (c *PackageCommand) Run(args []string) int {
} else { //attempt to get from the public registry if not found locally
c.ui.Output(fmt.Sprintf("- Checking for provider plugin on %s...",
releaseHost))
_, err := installer.Get(name, constraint)
_, _, err := installer.Get(name, constraint)
if err != nil {
c.ui.Error(fmt.Sprintf("- Failed to resolve %s provider %s: %s", name, constraint, err))
return 1

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