Allow all failed commit builds to be retried.

app/controllers/projects/commit_controller.rb

@@ -39,6 +39,16 @@ class Projects::CommitController < Projects::ApplicationController
     redirect_to ci_namespace_project_commit_path(project.namespace, project, commit.sha)
   end
+  def retry_builds
+    @ci_commit = @project.ci_commit(@commit.sha)
+    @ci_commit.builds.latest.failed.each do |build|
+      if build.retryable?
+        Ci::Build.retry(build)
+      end
+    end
+
+    redirect_to ci_namespace_project_commit_path(project.namespace, project, commit.sha)
+  end
   def branches
     @branches = @project.repository.branch_names_contains(commit.id)

app/views/projects/commit/ci.html.haml

@@ -26,6 +26,9 @@
      
     - if @ci_project && current_user && can?(current_user, :manage_builds, @project)
+      - if @ci_commit.builds.latest.failed.any?(&:retryable?)
+        = link_to "Retry failed", retry_ci_namespace_project_commit_path(@project.namespace, @project, @commit.sha), class: 'btn btn-xs btn-primary', method: :post
+
       - if @ci_commit.builds.running_or_pending.any?
         = link_to "Cancel all", cancel_builds_namespace_project_commit_path(@project.namespace, @project, @commit.sha), class: 'btn btn-xs btn-danger'

config/routes.rb

@@ -475,6 +475,7 @@ Gitlab::Application.routes.draw do
             get :branches
             get :ci
             get :cancel_builds
+            post :retry_builds
           end
         end