OpenShift Pipelines (Tekton) - Triggers with a cup of Gitea - Branch Webhook Demo

Prerequisite

Triggers with a cup of Gitea - Cluster Setup

Set Up The Namespace Provisioner

Create a Namespace
```
oc new-project namespace-provisioner
```

Create a service account with self-provisioner privileges

oc create sa provisioner -n namespace-provisioner
oc adm policy add-cluster-role-to-user self-provisioner -z provisioner -n namespace-provisioner

Create a ConfigMap for the CA bundle that includes our Gitea server

cat << EOF | oc apply -n namespace-provisioner -f -
apiVersion: v1
kind: ConfigMap
metadata:
  name: trusted-ca
  labels:
    config.openshift.io/inject-trusted-cabundle: 'true'
EOF

Create the Tekton Task and Trigger objects

oc apply -f ~/tekton-tutorial/gitea-demo/namespace-provisioner/ -n namespace-provisioner

Expose the Trigger via a Secured Route

SVC_NAME=$(oc get el ns-prov-trigger-listener -o=jsonpath='{.status.configuration.generatedName}')
oc create route edge ${SVC_NAME} --service=${SVC_NAME}

Create the Gitea Webhook

Retrieve the endpoint URL of the Trigger Event Listener

echo "https://$(oc get route ${SVC_NAME} -o=jsonpath='{.spec.host}')"

Log into Gitea with the ‘developer’ user account:
Select the Organization tab on the right, and select the demo organization:
Click on Settings to the right above New Migration:
Select Webhooks from the menu on the left, and click Add webhook:
Use the URL from step 1 to fill in the webhook as shown:
Click the Add Webhook button:
Your webhook is ready to fire.

Create A Git repository

Let’s use the Quarkus CLI to create a Java application and add it to our Gitea repository:

Create a basic Quarkus REST service:

We’re using the Quarkus CLI for this step. Check it out here: https://quarkus.io/guides/cli-tooling

mkdir ~/branch-test
cd ~/branch-test

quarkus create app --maven --java=11 --no-wrapper --package-name=fun.is.quarkus.demo fun.is.quarkus:hook-test:0.1

Initialize a git repository for the demo app code:

cd ~/branch-test/hook-test
git init -b main
git add .
git commit -m "initial commit"

Add the Gitea server as a remote origin:

git remote add origin https://gitea-gitea.apps-crc.testing/demo/hook-test

Push the demo code to our Gitea instance:
```
GIT_SSL_NO_VERIFY=true git push --set-upstream origin main
```
Note: We’re using GIT_SSL_NO_VERIFY here because we have not set up trust between our Gitea server and workstation.

When prompted, enter the credentials that you created for your gitea user: developer

Take a Look at the Results

The webhook should have fired on the creation of the main branch.

Log into the OpenShift console as kubeadmin
```
crc console --credentials
crc console
```
Take a look at the TaksRuns in the namespace-provisioner namespace:

Log into the OpenShift CLI as the developer user:

oc login -u developer -p developer https://api.crc.testing:6443

Take a look at the available namespaces:

oc get projects

NAME             DISPLAY NAME   STATUS
hook-test-main                  Active

Create a new branch, and verify that another namespace appears:

cd ~/branch-test/hook-test
git checkout -b my-feature
GIT_SSL_NO_VERIFY=true  git push --set-upstream origin my-feature

oc get projects

NAME                   DISPLAY NAME   STATUS
hook-test-main                        Active
hook-test-my-feature                  Active

JSON Payload of a Create Hook

{
  "sha": "9354b1ebd85dba28268d7a7fa2ba6722ef629542",
  "ref": "my-feature",
  "ref_type": "branch",
  "repository": {
    "id": 2,
    "owner": {
      "id": 4,
      "login": "demo",
      "full_name": "",
      "email": "",
      "avatar_url": "https://gitea-gitea.apps-crc.testing/avatars/fe01ce2a7fbac8fafaed7c982a04e229",
      "language": "",
      "is_admin": false,
      "last_login": "0001-01-01T00:00:00Z",
      "created": "2022-05-14T16:13:22Z",
      "restricted": false,
      "active": false,
      "prohibit_login": false,
      "location": "",
      "website": "",
      "description": "",
      "visibility": "private",
      "followers_count": 0,
      "following_count": 0,
      "starred_repos_count": 0,
      "username": "demo"
    },
    "name": "hook-test",
    "full_name": "demo/hook-test",
    "description": "",
    "empty": false,
    "private": true,
    "fork": false,
    "template": false,
    "parent": null,
    "mirror": false,
    "size": 215,
    "html_url": "https://gitea-gitea.apps-crc.testing/demo/hook-test",
    "ssh_url": "gitea@gitea-gitea.apps-crc.testing:demo/hook-test.git",
    "clone_url": "https://gitea-gitea.apps-crc.testing/demo/hook-test.git",
    "original_url": "",
    "website": "",
    "stars_count": 0,
    "forks_count": 0,
    "watchers_count": 3,
    "open_issues_count": 0,
    "open_pr_counter": 0,
    "release_counter": 0,
    "default_branch": "main",
    "archived": false,
    "created_at": "2022-05-15T13:07:04Z",
    "updated_at": "2022-05-15T13:17:47Z",
    "permissions": {
      "admin": false,
      "push": false,
      "pull": false
    },
    "has_issues": true,
    "internal_tracker": {
      "enable_time_tracker": true,
      "allow_only_contributors_to_track_time": true,
      "enable_issue_dependencies": true
    },
    "has_wiki": true,
    "has_pull_requests": true,
    "has_projects": true,
    "ignore_whitespace_conflicts": false,
    "allow_merge_commits": true,
    "allow_rebase": true,
    "allow_rebase_explicit": true,
    "allow_squash_merge": true,
    "default_merge_style": "merge",
    "avatar_url": "",
    "internal": false,
    "mirror_interval": "",
    "mirror_updated": "0001-01-01T00:00:00Z",
    "repo_transfer": null
  },
  "sender": {
    "id": 2,
    "login": "developer",
    "full_name": "",
    "email": "developer@gitea.crc.testing",
    "avatar_url": "https://secure.gravatar.com/avatar/b2f888cb41ee3b9f75d5844732d68765?d=identicon",
    "language": "",
    "is_admin": false,
    "last_login": "0001-01-01T00:00:00Z",
    "created": "2022-05-14T15:48:18Z",
    "restricted": false,
    "active": false,
    "prohibit_login": false,
    "location": "",
    "website": "",
    "description": "",
    "visibility": "public",
    "followers_count": 0,
    "following_count": 0,
    "starred_repos_count": 0,
    "username": "developer"
  }
}