feat: add support for GitLab Generic Packages (#2006) (#2745)

GitLab's Generic Package Repository allows uploading files
to GitLab, as an alternative to attachments.

Added the flag `use_package_registry` to the `gitlab_urls` config.
When false, the default, it will behave as before.
When true, it will publish the file to the Generic Package Registry.
Either way, the URL is bound to the release the same

Updated `go-gitlab` to version 0.52.2 which has the new
`GenericPackages.PublishPackageFile` function.

Co-authored-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>

internal/client/gitlab.go

@@ -377,19 +377,41 @@ func (c *gitlabClient) Upload(
 		projectID = ctx.Config.Release.GitLab.Owner + "/" + projectID
 	}
 
-	log.WithField("file", file.Name()).Debug("uploading file")
-	projectFile, _, err := c.client.Projects.UploadFile(
-		projectID,
-		file.Name(),
-		nil,
-	)
-	if err != nil {
-		return err
+	var baseLinkURL string
+	if ctx.Config.GitLabURLs.UsePackageRegistry {
+		log.WithField("file", file.Name()).Debug("uploading file as generic package")
+		_, _, err := c.client.GenericPackages.PublishPackageFile(
+			projectID,
+			ctx.Config.ProjectName,
+			ctx.Version,
+			artifact.Name,
+			file,
+			nil,
+		)
+		if err != nil {
+			return err
+		}
+		baseLinkURL, err = c.client.GenericPackages.FormatPackageURL(
+			projectID, ctx.Config.ProjectName, ctx.Version, artifact.Name)
+		if err != nil {
+			return err
+		}
+	} else {
+		log.WithField("file", file.Name()).Debug("uploading file as attachment")
+		projectFile, _, err := c.client.Projects.UploadFile(
+			projectID,
+			file.Name(),
+			nil,
+		)
+		if err != nil {
+			return err
+		}
+		baseLinkURL = projectFile.URL
 	}
 
 	log.WithFields(log.Fields{
 		"file": file.Name(),
-		"url":  projectFile.URL,
+		"url":  baseLinkURL,
 	}).Debug("uploaded file")
 
 	// search for project details based on projectID
@@ -398,14 +420,18 @@ func (c *gitlabClient) Upload(
 		return err
 	}
 
-	gitlabBaseURL, err := tmpl.New(ctx).Apply(ctx.Config.GitLabURLs.Download)
-	if err != nil {
-		return fmt.Errorf("templating GitLab Download URL: %w", err)
-	}
-
-	linkURL := gitlabBaseURL + "/" + projectDetails.PathWithNamespace + projectFile.URL
 	name := artifact.Name
 	filename := "/" + name
+	var linkURL string
+	if ctx.Config.GitLabURLs.UsePackageRegistry {
+		linkURL = c.client.BaseURL().String() + baseLinkURL
+	} else {
+		gitlabBaseURL, err := tmpl.New(ctx).Apply(ctx.Config.GitLabURLs.Download)
+		if err != nil {
+			return fmt.Errorf("templating GitLab Download URL: %w", err)
+		}
+		linkURL = gitlabBaseURL + "/" + projectDetails.PathWithNamespace + baseLinkURL
+	}
 	releaseLink, _, err := c.client.ReleaseLinks.CreateReleaseLink(
 		projectID,
 		releaseID,

pkg/config/config.go

@@ -25,9 +25,10 @@ type GitHubURLs struct {
 
 // GitLabURLs holds the URLs to be used when using gitlab ce/enterprise.
 type GitLabURLs struct {
-	API           string `yaml:"api,omitempty"`
-	Download      string `yaml:"download,omitempty"`
-	SkipTLSVerify bool   `yaml:"skip_tls_verify,omitempty"`
+	API                string `yaml:"api,omitempty"`
+	Download           string `yaml:"download,omitempty"`
+	SkipTLSVerify      bool   `yaml:"skip_tls_verify,omitempty"`
+	UsePackageRegistry bool   `yaml:"use_package_registry,omitempty"`
 }
 
 // GiteaURLs holds the URLs to be used when using gitea.

www/docs/scm/gitlab.md

@@ -28,6 +28,9 @@ gitlab_urls:
   download: https://gitlab.company.com
   # set to true if you use a self-signed certificate
   skip_tls_verify: false
+  # set to true if you want to upload to the Package Registry rather than attachments
+  # Only works with GitLab 13.5+
+  use_package_registry: false
 ```
 
 If none are set, they default to GitLab's public URLs.
@@ -37,6 +40,19 @@ If none are set, they default to GitLab's public URLs.
     on [release](https://docs.gitlab.com/ee/user/project/releases/index.html) functionality
     and [direct asset linking](https://docs.gitlab.com/ee/user/project/releases/index.html#permanent-links-to-release-assets).
 
+## Generic Package Registry
+
+GitLab introduced the [Generic Package Registry](https://docs.gitlab.com/ee/user/packages/package_registry/index.html) in Gitlab 13.5.
+
+Normally, `goreleaser` uploads release files as "attachments", which may have [administrative limits](https://docs.gitlab.com/ee/user/admin_area/settings/account_and_limit_settings.html).  Notably, hosted gitlab.com instances have a 10MB attachment limit which cannot be changed.
+
+Uploading to the Generic Package Registry does not have this restriction.  To use it instead, set `use_package_registry` to `true`.
+
+```yaml
+# .goreleaser.yml
+gitlab_urls:
+  use_package_registry: true
+```
 
 ## Example release