limit branch name to 20 characters (#14977)

.github/branchNameValidation.sh

@@ -3,6 +3,7 @@
 set -e
 
 local_branch=${1}
+[ -z "${1}" ] && local_branch=$(git rev-parse --abbrev-ref HEAD)
 
 valid_branch='^[a-z][a-z0-9-]*$'
 
@@ -15,7 +16,7 @@ join_by() { local IFS='|'; echo "$*"; }
 #creates glob match to check for reserved words used in branch names which would trigger failures
 glob=$(join_by $(for i in ${reserved_words[@]}; do echo "^$i-|-$i$|-$i-|^$i$"; done;))
 
-if [[ ! $local_branch =~ $valid_branch ]] || [[ $local_branch =~ $glob ]] || [[ ${#local_branch} -gt 64 ]]; then
+if [[ ! $local_branch =~ $valid_branch ]] || [[ $local_branch =~ $glob ]] || [[ ${#local_branch} -gt 20 ]]; then
     echo """
      ------------------------------------------------------------------------------------------------------------------------------
      ERROR:  Please read below
@@ -28,7 +29,7 @@ if [[ ! $local_branch =~ $valid_branch ]] || [[ $local_branch =~ $glob ]] || [[
     Therefore, the branch name must be a valid service name. Branch name must be all lower case with no spaces and no underscores.
 
     From Serverless:
-        A service name should only contain alphanumeric (case sensitive) and hyphens. It should start with an alphabetic character and shouldnt exceed 128 characters.
+        A service name should only contain alphanumeric (case sensitive) and hyphens. It should start with an alphabetic character and shouldnt exceed 20 characters.
         For Github Actions support, please push your code to a new branch with a name that meets Serverless' service name requirements.
         So, make a new branch with a name that begins with a letter and is made up of only letters, numbers, and hyphens... then delete this branch.
         ------------------------------------------------------------------------------------------------------------------------------

.github/workflows/pull-request.yml

@@ -3,6 +3,13 @@ name: Pull Request
 on: [pull_request]
 
 jobs:
+  prchecks:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Configure pre-commit to skip branch name validation
+        run: |
+          echo "SKIP=branch-name-validation" >> $GITHUB_ENV
   assignAuthor:
     runs-on: ubuntu-latest
     steps:

.pre-commit-config.yaml

@@ -7,4 +7,11 @@ repos:
   - repo: https://github.com/zricethezav/gitleaks
     rev: v8.12.0
     hooks:
-      - id: gitleaks
+      - id: gitleaks
+  - repo: local
+    hooks:
+      - id: branch-name-validation
+        name: branch-name-validation
+        entry: .github/branchNameValidation.sh
+        language: script
+        pass_filenames: false