abstract changed files pattern to git.changedfiles()

move the logic related to changed files in commit check to
canvas-builds


refs DE-366
flag = none

test plan:
- Build passes
- Main Build detect if there was a change in Jenkins file in HEAD
- Local Docker dev Build is triggered if a local dev file changes
- JENKINSFILE_REFSPEC is setted if a Jenkinfiles changes

Change-Id: I497cae9654e1b71b2de5ec3325b9577b30cfeeba
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/253555
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
QA-Review: Andrea Cirulli <andrea.cirulli@instructure.com>
Product-Review: Andrea Cirulli <andrea.cirulli@instructure.com>
Reviewed-by: Aaron Ogata <aogata@instructure.com>
Reviewed-by: James Butters <jbutters@instructure.com>

Jenkinsfile

@@ -35,6 +35,22 @@ def buildParameters = [
   string(name: 'MASTER_BOUNCER_RUN', value: "${env.MASTER_BOUNCER_RUN}")
 ]
 
+def dockerDevFiles = [
+  '^docker-compose/',
+  '^build/common_docker_build_steps.sh',
+  '^script/canvas_update',
+  '^docker-compose.yml',
+  '^Dockerfile$',
+  '^lib/tasks/',
+  'Jenkinsfile.docker-smoke'
+]
+
+def jenkinsFiles = [
+  'Jenkinsfile*',
+  '^docker-compose.new-jenkins*.yml',
+  'build/new-jenkins/*'
+]
+
 def getDockerWorkDir() {
   return env.GERRIT_PROJECT == "canvas-lms" ? "/usr/src/app" : "/usr/src/app/gems/plugins/${env.GERRIT_PROJECT}"
 }
@@ -403,7 +419,7 @@ pipeline {
                 }
                 // If modifying any of our Jenkinsfiles set JENKINSFILE_REFSPEC for sub-builds to use Jenkinsfiles in
                 // the gerrit rather than master.
-                if(env.GERRIT_PROJECT == 'canvas-lms' && (sh(script: './build/new-jenkins/jenkinsfile_changes.sh', returnStatus: true) == 0)) {
+                if(env.GERRIT_PROJECT == 'canvas-lms' && git.changedFiles(jenkinsFiles, 'HEAD^') ) {
                     buildParameters += string(name: 'JENKINSFILE_REFSPEC', value: "${env.GERRIT_REFSPEC}")
                 }
 
@@ -456,15 +472,8 @@ pipeline {
                     rebaseHelper("master")
                   }
 
-                  if(!env.JOB_NAME.endsWith('Jenkinsfile')) {
-                    sh """#!/bin/bash
-                      set -o errexit -o errtrace -o nounset -o pipefail -o xtrace
-
-                      if git diff --name-only origin/master..HEAD Jenkinsfile* docker-compose.new-jenkins* build/new-jenkins/* |grep -E "Jenkinsfile|docker-compose.new-jenkins|build/new-jenkins/"; then
-                        echo "Jenkinsfile has been updated. Please retrigger your patchset for the latest updates."
-                        exit 1
-                      fi
-                    """
+                  if(!env.JOB_NAME.endsWith('Jenkinsfile') && git.changedFiles(jenkinsFiles, 'origin/master')) {
+                      error "Jenkinsfile has been updated. Please retrigger your patchset for the latest updates."
                   }
                 }
               }
@@ -637,7 +646,7 @@ pipeline {
                   )
                 }
 
-                if(env.GERRIT_PROJECT == 'canvas-lms' && (sh(script: 'build/new-jenkins/docker-dev-changes.sh', returnStatus: true) == 0)) {
+                if(env.GERRIT_PROJECT == 'canvas-lms' && git.changedFiles(dockerDevFiles, 'HEAD^')) {
                   echo 'adding Local Docker Dev Build'
                   buildStage.makeFromJob('Local Docker Dev Build', '/Canvas/test-suites/local-docker-dev-smoke', stages, buildParameters)
                 }

build/new-jenkins/docker-dev-changes.sh

@@ -1,20 +0,0 @@
-#!/bin/bash
-
-set -o nounset -o errexit -o errtrace -o pipefail -o xtrace
-function join_by { local d=$1; shift; local f=$1; shift; printf %s "$f" "${@/#/$d}"; }
-
-fileArr=(
-  '^docker-compose/'
-  '^build/common_docker_build_steps.sh'
-  '^script/canvas_update'
-  '^docker-compose.yml'
-  '^Dockerfile$'
-  '^lib/tasks/'
-  'Jenkinsfile.docker-smoke'
-)
-
-files=$(join_by '|' "${fileArr[@]}")
-
-changed="$(git show --pretty="" --name-only HEAD^..HEAD | grep -E "${files}")"
-
-[[ -n "$changed" ]]; exit $?

build/new-jenkins/jenkinsfile_changes.sh

@@ -1,21 +0,0 @@
-#!/bin/bash
-
-set -o nounset -o errexit -o errtrace -o pipefail -o xtrace
-function join_by { local d=$1; shift; local f=$1; shift; printf %s "$f" "${@/#/$d}"; }
-
-fileArr=(
-  '^Jenkinsfile$'
-  '^Jenkinsfile.contract-tests$'
-  '^Jenkinsfile.docker-smoke$'
-  '^Jenkinsfile.js$'
-  '^Jenkinsfile.selenium.flakey_spec_catcher$'
-  '^Jenkinsfile.vendored-gems$'
-  '^docker-compose.new-jenkins*.yml'
-  'build/new-jenkins/*'
-)
-
-files=$(join_by '|' "${fileArr[@]}")
-
-changed="$(git show --pretty="" --name-only HEAD^..HEAD | grep -E "${files}")"
-
-[[ -n "$changed" ]]; exit $?