add_ngrok_hook.sh

#!/bin/bash -
#===============================================================================
#
#          FILE: add_ngrok_hook.sh
#
#         USAGE: ./add_ngrok_hook.sh
#
#   DESCRIPTION: adds ngrok-created public URL that points
#                to hook running on port 8888 at hook.default.svc.cluster
#
#       OPTIONS: none
#        AUTHOR: Robert Kielty (robk), rob.kielty@gmail.com
#       CREATED: 05/11/19 13:36:55
#===============================================================================
declare SECRETS_DIR
declare PUBLIC_URL
declare GITHUB_ORG="ROKITdsOrg"
declare GITHUB_REPO="kubernetes"

SECRETS_DIR="$(pwd)/secrets"

function get_ngrok_if_needed() {
  if ! command -v ngrok >/dev/null 2>&1; then
		echo "$0: visit https://ngrok.com/download and download ngrok for your platform"
		exit 1
	fi
}

function build_add_hook_if_needed() {
  if ! command -v add-hook >/dev/null 2>&1; then
		echo "Installing add-hook"
    cd "${GOPATH}"/src/k8s.io/test-infra/experiment/add-hook/ || echo "Cannot find local fork of test-infr" 
		go install
	fi
}

# adds a github webhook PUBLIC_URL to the GITHUB/GITHUB_REPO as
function add_hook() {
   add-hook --confirm --hmac-path="${SECRETS_DIR}"/hmac-token \
		 --github-token-path="${SECRETS_DIR}"/gh-oauth-token \
		 --hook-url "${PUBLIC_URL}"/hook \
		 --repo "${GITHUB_ORG}"/"${GITHUB_REPO}"
}

function get_prow_hook_ngrok_public_url() {
	PUBLIC_URL=$(curl -s http://127.0.0.1:4040/api/tunnels | jq -r .tunnels[0].public_url)
  if [ -z "${PUBLIC_URL}" ]; then
		./tools/ngrok start -all -config=./tools/ngrok-yaml &
		sleep 3
	fi
	PUBLIC_URL=$(curl -s http://127.0.0.1:4040/api/tunnels | jq -r .tunnels[0].public_url)
}

get_prow_hook_ngrok_public_url
build_add_hook_if_needed
add_hook

echo "$0: your ngrok public url is $PUBLIC_URL"
echo "$0: inspect ngrok tunnel locally here http://localhost:4040/inspect/http"
echo "$0: and ./ngrok.log"
echo "$0: verify your github webhook settings here : https://github.com/${GITHUB_ORG}/${GITHUB_REPO}/settings/hooks"