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Adding registry url discovery for Terragrunt Provider Cache (#3299)
* chore: registry discovery url * chore: default urls for registry without well-known endpoint * chore: building url if registry download url is a filename * Update cli/provider_cache.go Co-authored-by: Yousif Akbar <[email protected]> --------- Co-authored-by: Yousif Akbar <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| package cli | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "io" | ||
| "net/http" | ||
|
|
||
| "github.com/gruntwork-io/go-commons/errors" | ||
| ) | ||
|
|
||
| const ( | ||
| // well-known address for discovery URLs | ||
| wellKnownURL = ".well-known/terraform.json" | ||
| ) | ||
|
|
||
| var ( | ||
| DefaultRegistryURLs = &RegistryURLs{ | ||
| ModulesV1: "/v1/modules", | ||
| ProvidersV1: "/v1/providers", | ||
| } | ||
| ) | ||
|
|
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| type RegistryURLs struct { | ||
| ModulesV1 string `json:"modules.v1"` | ||
| ProvidersV1 string `json:"providers.v1"` | ||
| } | ||
|
|
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| func (urls *RegistryURLs) String() string { | ||
| b, _ := json.Marshal(urls) //nolint:errcheck | ||
| return string(b) | ||
| } | ||
|
|
||
| func DiscoveryURL(ctx context.Context, registryName string) (*RegistryURLs, error) { | ||
| url := fmt.Sprintf("https://%s/%s", registryName, wellKnownURL) | ||
|
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| req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil) | ||
| if err != nil { | ||
| return nil, errors.WithStackTrace(err) | ||
| } | ||
|
|
||
| resp, err := (&http.Client{}).Do(req) | ||
| if err != nil { | ||
| return nil, errors.WithStackTrace(err) | ||
| } | ||
| defer resp.Body.Close() //nolint:errcheck | ||
|
|
||
| switch resp.StatusCode { | ||
| case http.StatusNotFound: | ||
| return nil, errors.WithStackTrace(NotFoundWellKnownURL{wellKnownURL}) | ||
| case http.StatusOK: | ||
| default: | ||
| return nil, fmt.Errorf("%s returned %s", url, resp.Status) | ||
| } | ||
|
|
||
| content, err := io.ReadAll(resp.Body) | ||
| if err != nil { | ||
| return nil, errors.WithStackTrace(err) | ||
| } | ||
|
|
||
| urls := new(RegistryURLs) | ||
| if err := json.Unmarshal(content, urls); err != nil { | ||
| return nil, errors.WithStackTrace(err) | ||
| } | ||
| return urls, nil | ||
| } | ||
|
|
||
| type NotFoundWellKnownURL struct { | ||
| url string | ||
| } | ||
|
|
||
| func (err NotFoundWellKnownURL) Error() string { | ||
| return fmt.Sprintf("%s not found", err.url) | ||
| } |
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