CHAD-4486 Commit hooks (#23444)

* CHAD-4486 Improve DTH commit process

* set pre-commit script as executable

* compile error handling

* finalize commit hooks

* cleanup of commit hook

adds an "unconfigure" task if you want to undo

Author: greens

.githooks/pre-commit

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+ERROR_COUNT=0
+while IFS= read -r DTH; do
+  echo "Verifying $DTH"
+  ERRORS=$(groovyc $DTH 2>&1 | grep ".groovy:")
+  # echo $ERRORS
+  IMPORTANT_ERRORS=$(echo $ERRORS | grep -v "unable")
+  if [[ ${#IMPORTANT_ERRORS} -eq 0 ]]; then
+    echo "No disqualifying compilation errors found"
+  else
+    echo "$DTH failed to compile, run groovyc on your source file for the full error: $ERRORS"
+    ERROR_COUNT=$((ERROR_COUNT + 1))
+  fi
+  echo "======================================================================="
+done < <(git diff --cached --name-only | grep .*.groovy)
+
+if [[ $ERROR_COUNT -gt 0 ]]; then
+  echo "rejected" && exit 1
+else
+  exit 0
+fi

build.gradle

@@ -138,3 +138,17 @@ slackSendMessage {
         text: messageText
     )
 }
+
+task configure(type: Exec) {
+    description "Configures automatic spaces->tabs conversion on merge and a commit hook to detect syntax errors"
+    File attributeFile = new File("${projectDir}/.git/info/attributes")
+    attributeFile.write("*.groovy filter=tabspace\n")
+    commandLine "git", "config", "filter.tabspace.clean", "unexpand -t 2"
+    commandLine "git", "config", "core.hooksPath", ".githooks"
+}
+
+task unconfigure(type: Exec) {
+    description "Undoes configuration put in place by configure"
+    commandLine "git", "config", "--unset-all", "filter.tabspace.clean"
+    commandLine "git", "config", "core.hooksPath", "${projectDir}/.git/hooks"
+}