Merge pull request #1601 from valfirst/use-built-in-caching

[CI] Use built-in caching from `setup-java` action

.github/workflows/build.yml

@@ -19,21 +19,12 @@ jobs:
       - name: Validate Gradle Wrapper
         uses: gradle/wrapper-validation-action@v1
 
-      - name: Generate cache key
-        run: ./.github/workflows/checksum.sh checksum.txt
-
-      - uses: actions/cache@v2
-        with:
-          path: ~/.gradle/caches
-          key: ${{ runner.os }}-gradle-${{ hashFiles('checksum.txt') }}
-          restore-keys: |
-            ${{ runner.os }}-gradle-
-
       - name: Configure JDK
         uses: actions/setup-java@v3
         with:
           distribution: 'zulu'
           java-version: '18'
+          cache: 'gradle'
 
       - name: Test
         run: ./gradlew build check --stacktrace -PkotlinTestMode=${{ matrix.kotlin-test-mode }}

.github/workflows/checksum.sh

@@ -1,24 +0,0 @@
-#!/bin/bash
-
-RESULT_FILE=$1
-
-if [[ -f ${RESULT_FILE} ]]; then
-  rm ${RESULT_FILE}
-fi
-touch ${RESULT_FILE}
-
-checksum_file() {
-  echo $(openssl md5 $1 | awk '{print $2}')
-}
-
-FILES=()
-while read -r -d ''; do
-	FILES+=("$REPLY")
-done < <(find . -type f \( -name "build.gradle*" -o -name "settings.gradle*" -o -name "gradle-wrapper.properties" \) -print0)
-
-# Loop through files and append MD5 to result file
-for FILE in ${FILES[@]}; do
-	echo $(checksum_file ${FILE}) >> ${RESULT_FILE}
-done
-# Now sort the file so that it is idempotent.
-sort ${RESULT_FILE} -o ${RESULT_FILE}