project: Add merge_pipelines_enabled and merge_trains_enabled. Closes #623

docs/data-sources/project.md

@@ -38,7 +38,9 @@ data "gitlab_project" "example" {
 - **http_url_to_repo** (String) URL that can be provided to `git clone` to clone the
 - **issues_enabled** (Boolean) Enable issue tracking for the project.
 - **lfs_enabled** (Boolean) Enable LFS for the project.
+- **merge_pipelines_enabled** (Boolean) Enable or disable merge pipelines.
 - **merge_requests_enabled** (Boolean) Enable merge requests for the project.
+- **merge_trains_enabled** (Boolean) Enable or disable merge trains.
 - **name** (String) The name of the project.
 - **namespace_id** (Number) The namespace (group or user) of the project. Defaults to your user.
 - **path** (String) The path of the repository.

docs/data-sources/projects.md

@@ -100,7 +100,9 @@ Read-Only:
 - **last_activity_at** (String)
 - **lfs_enabled** (Boolean)
 - **merge_method** (String)
+- **merge_pipelines_enabled** (Boolean)
 - **merge_requests_enabled** (Boolean)
+- **merge_trains_enabled** (Boolean)
 - **mirror** (Boolean)
 - **mirror_overwrites_diverged_branches** (Boolean)
 - **mirror_trigger_builds** (Boolean)

docs/resources/project.md

@@ -60,8 +60,10 @@ resource "gitlab_project" "example-two" {
 - **issues_template** (String) Sets the template for new issues in the project.
 - **lfs_enabled** (Boolean) Enable LFS for the project.
 - **merge_method** (String) Set to `ff` to create fast-forward merges
+- **merge_pipelines_enabled** (Boolean) Enable or disable merge pipelines.
 - **merge_requests_enabled** (Boolean) Enable merge requests for the project.
 - **merge_requests_template** (String) Sets the template for new merge requests in the project.
+- **merge_trains_enabled** (Boolean) Enable or disable merge trains. Requires `merge_pipelines_enabled` to be set to `true` to take effect.
 - **mirror** (Boolean) Enable project pull mirror.
 - **mirror_overwrites_diverged_branches** (Boolean) Enable overwrite diverged branches for a mirrored project.
 - **mirror_trigger_builds** (Boolean) Enable trigger builds on pushes for a mirrored project.

internal/provider/data_source_gitlab_project.go

@@ -139,6 +139,16 @@ var _ = registerDataSource("gitlab_project", func() *schema.Resource {
 				Type:        schema.TypeBool,
 				Computed:    true,
 			},
+			"merge_pipelines_enabled": {
+				Description: "Enable or disable merge pipelines.",
+				Type:        schema.TypeBool,
+				Computed:    true,
+			},
+			"merge_trains_enabled": {
+				Description: "Enable or disable merge trains.",
+				Type:        schema.TypeBool,
+				Computed:    true,
+			},
 			// lintignore: S031 // TODO: Resolve this tfproviderlint issue
 			"push_rules": {
 				Description: "Push rules for the project.",
@@ -247,6 +257,8 @@ func dataSourceGitlabProjectRead(ctx context.Context, d *schema.ResourceData, me
 	d.Set("runners_token", found.RunnersToken)
 	d.Set("archived", found.Archived)
 	d.Set("remove_source_branch_after_merge", found.RemoveSourceBranchAfterMerge)
+	d.Set("merge_pipelines_enabled", found.MergePipelinesEnabled)
+	d.Set("merge_trains_enabled", found.MergeTrainsEnabled)
 
 	log.Printf("[DEBUG] Reading Gitlab project %q push rules", d.Id())
 

internal/provider/data_source_gitlab_projects.go

@@ -165,6 +165,8 @@ func flattenProjects(projects []*gitlab.Project) (values []map[string]interface{
 				"packages_enabled":                                 project.PackagesEnabled,
 				"build_coverage_regex":                             project.BuildCoverageRegex,
 				"ci_forward_deployment_enabled":                    project.CIForwardDeploymentEnabled,
+				"merge_pipelines_enabled":                          project.MergePipelinesEnabled,
+				"merge_trains_enabled":                             project.MergeTrainsEnabled,
 			}
 			values = append(values, v)
 		}
@@ -777,6 +779,16 @@ var _ = registerDataSource("gitlab_projects", func() *schema.Resource {
 							Type:        schema.TypeBool,
 							Computed:    true,
 						},
+						"merge_pipelines_enabled": {
+							Description: "Enable or disable merge pipelines.",
+							Type:        schema.TypeBool,
+							Computed:    true,
+						},
+						"merge_trains_enabled": {
+							Description: "Enable or disable merge trains.",
+							Type:        schema.TypeBool,
+							Computed:    true,
+						},
 					},
 				},
 			},

internal/provider/resource_gitlab_project.go

@@ -375,6 +375,18 @@ var resourceGitLabProjectSchema = map[string]*schema.Schema{
 		Optional:    true,
 		Default:     true,
 	},
+	"merge_pipelines_enabled": {
+		Description: "Enable or disable merge pipelines.",
+		Type:        schema.TypeBool,
+		Optional:    true,
+		Default:     false,
+	},
+	"merge_trains_enabled": {
+		Description: "Enable or disable merge trains. Requires `merge_pipelines_enabled` to be set to `true` to take effect.",
+		Type:        schema.TypeBool,
+		Optional:    true,
+		Default:     false,
+	},
 }
 
 var _ = registerResource("gitlab_project", func() *schema.Resource {
@@ -447,6 +459,8 @@ func resourceGitlabProjectSetToState(client *gitlab.Client, d *schema.ResourceDa
 	d.Set("merge_requests_template", project.MergeRequestsTemplate)
 	d.Set("ci_config_path", project.CIConfigPath)
 	d.Set("ci_forward_deployment_enabled", project.CIForwardDeploymentEnabled)
+	d.Set("merge_pipelines_enabled", project.MergePipelinesEnabled)
+	d.Set("merge_trains_enabled", project.MergeTrainsEnabled)
 	return nil
 }
 
@@ -702,6 +716,14 @@ func resourceGitlabProjectCreate(ctx context.Context, d *schema.ResourceData, me
 		editProjectOptions.MergeRequestsTemplate = gitlab.String(v.(string))
 	}
 
+	if v, ok := d.GetOk("merge_pipelines_enabled"); ok {
+		editProjectOptions.MergePipelinesEnabled = gitlab.Bool(v.(bool))
+	}
+
+	if v, ok := d.GetOk("merge_trains_enabled"); ok {
+		editProjectOptions.MergeTrainsEnabled = gitlab.Bool(v.(bool))
+	}
+
 	if (editProjectOptions != gitlab.EditProjectOptions{}) {
 		if _, _, err := client.Projects.EditProject(d.Id(), &editProjectOptions, gitlab.WithContext(ctx)); err != nil {
 			return diag.Errorf("Could not update project %q: %s", d.Id(), err)
@@ -896,6 +918,14 @@ func resourceGitlabProjectUpdate(ctx context.Context, d *schema.ResourceData, me
 		options.CIForwardDeploymentEnabled = gitlab.Bool(d.Get("ci_forward_deployment_enabled").(bool))
 	}
 
+	if d.HasChange("merge_pipelines_enabled") {
+		options.MergePipelinesEnabled = gitlab.Bool(d.Get("merge_pipelines_enabled").(bool))
+	}
+
+	if d.HasChange("merge_trains_enabled") {
+		options.MergeTrainsEnabled = gitlab.Bool(d.Get("merge_trains_enabled").(bool))
+	}
+
 	if *options != (gitlab.EditProjectOptions{}) {
 		log.Printf("[DEBUG] update gitlab project %s", d.Id())
 		_, _, err := client.Projects.EditProject(d.Id(), options, gitlab.WithContext(ctx))

internal/provider/resource_gitlab_project_test.go

@@ -55,6 +55,8 @@ func TestAccGitlabProject_basic(t *testing.T) {
 		MergeRequestsTemplate:           "",
 		CIConfigPath:                    ".gitlab-ci.yml@mynamespace/myproject",
 		CIForwardDeploymentEnabled:      true,
+		MergePipelinesEnabled:           true,
+		MergeTrainsEnabled:              true,
 	}
 
 	defaultsMainBranch = defaults
@@ -102,6 +104,8 @@ func TestAccGitlabProject_basic(t *testing.T) {
 						PagesAccessLevel:            gitlab.DisabledAccessControl,
 						BuildCoverageRegex:          "bar",
 						CIForwardDeploymentEnabled:  false,
+						MergePipelinesEnabled:       false,
+						MergeTrainsEnabled:          false,
 					}, &received),
 				),
 			},
@@ -463,6 +467,60 @@ func TestAccGitlabProject_IssueMergeRequestTemplates(t *testing.T) {
 	})
 }
 
+func TestAccGitlabProject_MergePipelines(t *testing.T) {
+	var project gitlab.Project
+	rInt := acctest.RandInt()
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:          func() { testAccPreCheck(t) },
+		ProviderFactories: providerFactories,
+		CheckDestroy:      testAccCheckGitlabProjectDestroy,
+		Steps: []resource.TestStep{
+			{
+				SkipFunc: isRunningInCE,
+				Config:   testAccGitLabProjectMergePipelinesEnabled(rInt),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckGitlabProjectExists("gitlab_project.foo", &project),
+					func(s *terraform.State) error {
+						if project.MergePipelinesEnabled != true {
+							return fmt.Errorf("expected merge pipelines to be enabled")
+						}
+
+						return nil
+					},
+				),
+			},
+		},
+	})
+}
+
+func TestAccGitlabProject_MergeTrains(t *testing.T) {
+	var project gitlab.Project
+	rInt := acctest.RandInt()
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:          func() { testAccPreCheck(t) },
+		ProviderFactories: providerFactories,
+		CheckDestroy:      testAccCheckGitlabProjectDestroy,
+		Steps: []resource.TestStep{
+			{
+				SkipFunc: isRunningInCE,
+				Config:   testAccGitLabProjectMergeTrainsEnabled(rInt),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckGitlabProjectExists("gitlab_project.foo", &project),
+					func(s *terraform.State) error {
+						if project.MergeTrainsEnabled != true {
+							return fmt.Errorf("expected merge trains to be enabled")
+						}
+
+						return nil
+					},
+				),
+			},
+		},
+	})
+}
+
 func TestAccGitlabProject_willError(t *testing.T) {
 	var received, defaults gitlab.Project
 	rInt := acctest.RandInt()
@@ -1283,6 +1341,8 @@ resource "gitlab_project" "foo" {
   pages_access_level = "disabled"
   build_coverage_regex = "bar"
   ci_forward_deployment_enabled = false
+  merge_pipelines_enabled = false
+  merge_trains_enabled = false
 }
 	`, rInt, rInt)
 }
@@ -1507,3 +1567,34 @@ resource "gitlab_project" "foo" {
 }
 	`, rInt, rInt)
 }
+
+func testAccGitLabProjectMergePipelinesEnabled(rInt int) string {
+	return fmt.Sprintf(`
+resource "gitlab_project" "foo" {
+  name = "foo-%d"
+  path = "foo.%d"
+  description = "Terraform acceptance tests"
+  merge_pipelines_enabled = true
+
+  # So that acceptance tests can be run in a gitlab organization
+  # with no billing
+  visibility_level = "public"
+}
+	`, rInt, rInt)
+}
+
+func testAccGitLabProjectMergeTrainsEnabled(rInt int) string {
+	return fmt.Sprintf(`
+resource "gitlab_project" "foo" {
+  name = "foo-%d"
+  path = "foo.%d"
+  description = "Terraform acceptance tests"
+  merge_pipelines_enabled = true
+  merge_trains_enabled = true
+
+  # So that acceptance tests can be run in a gitlab organization
+  # with no billing
+  visibility_level = "public"
+}
+	`, rInt, rInt)
+}