CE port for pipelines for external pull requests

Detect if pipeline runs for a GitHub pull request

When using a mirror for CI/CD only we register a pull_request
webhook. When a pull_request webhook is received, if the
source branch SHA matches the actual head of the branch in the
repository we create immediately a new pipeline for the
external pull request. Otherwise we store the
pull request info for when the push webhook is received.

When using "only/except: external_pull_requests" we can detect
if the pipeline has a open pull request on GitHub and create or
not the job based on that.

1 files changed, 17 insertions, 0 deletions

diff --git a/spec/factories/external_pull_requests.rb b/spec/factories/external_pull_requests.rb
new file mode 100644
index 00000000000..08d0fa4d419
--- /dev/null
+++ b/spec/factories/external_pull_requests.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :external_pull_request do
+    sequence(:pull_request_iid)
+    project
+    source_branch 'feature'
+    source_repository 'the-repository'
+    source_sha '97de212e80737a608d939f648d959671fb0a0142'
+    target_branch 'master'
+    target_repository 'the-repository'
+    target_sha 'a09386439ca39abe575675ffd4b89ae824fec22f'
+    status :open
+
+    trait(:closed) { status 'closed' }
+  end
+end