PMM-13487 Replace LOCAL_BUILD with USE_S3_CACHE var

build/local/README.md

@@ -58,7 +58,7 @@ In order to save time and to avoid building the same package versions repeatedly
 - before proceeding to building a package, we check if this package version can be found in S3 and we download the package instead of building it;
 - if the package can not be found, we build and upload it to S3 for future reuse.
 
-There is special variable `LOCAL_BUILD`, which needs to be set to '1' in case you don't have AWS CLI installed or you don't want to use the cache. Please be aware, that interacting with Percona's AWS S3 account, i.e. upload and download artefacts, requires authentication and is therefore reserved for Percona's own purposes. This is why, when building packages locally, you are requested to set this variable to '1', which happens to be the default value. Please note, that an attempt to interact with the S3 bucket without proper authorization will lead to a build failure.
+There is special parameter `--use-s3-cache`, which you have to pass in case you have AWS CLI installed or you want to use the build cache. Please be aware, that interacting with Percona's AWS S3 account, i.e. upload and download artefacts, requires authentication and is therefore reserved for Percona's own purposes. This is why, when building packages locally, you are requested to set this variable to '1', which is also the default value. Please note, that an attempt to interact with the S3 bucket without proper authorization will lead to a build failure.
 
 ## Avoiding unnecessary builds
 

build/local/build.sh

@@ -13,6 +13,7 @@ Options:
       --client-only           Build only PMM Client (client binaries + docker)
       --no-client             Do not build PMM Client (this will use local cache)
       --no-client-docker      Do not build PMM Client docker image
+      --use-s3-cache          Use S3 cache for the build (defaults to false)
       --log-file <path>       Save build logs to a file located at <path> (defaults to $PWD/build.log)
                               Note: the log file will get reset on every subsequent run
       --release-build         Make it a release, or release candidate build (otherwise it's a feature build)
@@ -40,7 +41,7 @@ parse_params() {
 	PATH_TO_SCRIPTS="sources/pmm/src/github.com/percona/pmm/build/scripts"
 
 	# Exported variables
-	export LOCAL_BUILD=1
+	export USE_S3_CACHE=0
 	export DEBUG_MODE=0
 	export ROOT_DIR="$(realpath ./${SUBMODULES})"
 	export RPMBUILD_DOCKER_IMAGE=perconalab/rpmbuild:3
@@ -84,6 +85,9 @@ parse_params() {
 				fi
 				PLATFORM="$1"
 				;;
+      --use-s3-cache)
+        USE_S3_CACHE=1
+        ;;
 			--log-file)
 				shift
 				if [ -z "$1" ]; then
@@ -431,6 +435,7 @@ initialize() {
   git submodule update --init --jobs ${NPROCS:-2}
   git submodule status
 
+  echo
   echo "Info: the source code has been cloned to '$SUBMODULES'."
   echo
 

build/scripts/build-server-rpm

@@ -42,10 +42,10 @@ is_build_needed() {
   # s3://pmm-build-cache/RELEASE/9 - el9
 
   # Check if this is a release build
-  if [ -z "$RPM_EPOCH"] && [ "$RELEASE_BUILD" = 1 ]; then
+  if [ "$RELEASE_BUILD" = 1 ]; then
     s3_cache_dir=RELEASE
   fi
-  if command -v aws &> /dev/null && [ -z "$LOCAL_BUILD" ]; then
+  if command -v aws &> /dev/null && [ "${USE_S3_CACHE:-0}" -eq 1 ]; then
     aws s3 sync \
         --region us-east-2 \
         --no-sign-request \
@@ -180,21 +180,21 @@ build() {
     rm -f SOURCES/${spec_name}.spec*
   "
 
-  if [ "$LOCAL_BUILD" = 1 ]; then
+  if [ "${USE_S3_CACHE:-0}" -eq 0 ]; then
     echo "Finished building Server RPMs, spec_name: ${spec_name}.spec, repo_name: ${repo_name}"
     echo
     return
   fi
 
   if ! command -v aws &> /dev/null; then
-    echo "Skipping upload to S3..."
+    echo "AWS CLI is not installed, skipping upload to S3..."
     echo
     echo "Finished building Server RPMs, spec_name: ${spec_name}.spec, repo_name: ${repo_name}"
     echo
     return
   fi
 
-  if [ -z "$RPM_EPOCH" ] && [ "$RELEASE_BUILD" = 1 ]; then
+  if [ "$RELEASE_BUILD" = 1 ]; then
     s3_cache_dir=RELEASE
   fi
   aws s3 sync \