[GHA] fix broken wait. Sign multiple win exes in parallel

.github/scripts/sign-exe.sh

@@ -10,13 +10,14 @@ echo "Copying ${in_file} to s3 s3://${AWS_S3_BUCKET}/exes-to-sign/${id}.exe for
 aws s3 cp $in_file s3://$AWS_S3_BUCKET/exes-to-sign/$id.exe --no-progress
 for (( i=wait_time; i<timeout; i+=wait_time )) ; {
   sleep $wait_time
-  object_exists=$(aws s3api head-object --bucket $CDN_BUCKET --key spring-tools/exes-signed/$id.exe > /dev/null 2>&1 || true)
-  if [ -z "$object_exists" ]; then
+  aws s3api head-object --bucket $CDN_BUCKET --key spring-tools/exes-signed/$id.exe >/dev/null 2>&1 || not_exist=true
+  if [ $not_exist ]; then
     echo "Waited ${i} seconds but ${in_filename} hasn't been signed yet..."
   else
     echo "Successfully signed file ${in_filename}"
     break
   fi
+  unset not_exist
 }
 aws s3 mv s3://$AWS_S3_BUCKET/exes-signed/$id.exe $out_file --no-progress
 

.github/workflows/gh-hosted-eclipse-distro-build.yml

@@ -170,8 +170,20 @@ jobs:
           files=`ls spring-tool-suite-4*win*.zip`
           for file in $files
           do
-            ${{ github.workspace }}/.github/scripts/sign-exe-in-zip-file.sh $file ${{ github.workspace }}/.github/scripts/sign-exe.sh ${{ github.workspace }}/.github/scripts/self-extracting-jar-creator.jar ${{ github.run_id }}
+            ${{ github.workspace }}/.github/scripts/sign-exe-in-zip-file.sh $file ${{ github.workspace }}/.github/scripts/sign-exe.sh ${{ github.workspace }}/.github/scripts/self-extracting-jar-creator.jar ${{ github.run_id }} &
           done
+          FAIL=0
+          for job in `jobs -p`
+          do
+            wait $job || let "FAIL+=1"
+          done
+          if [ "$FAIL" == "0" ];
+          then
+            echo "Done signing EXE files"
+          else
+            echo "Failed signing one or more EXE files"
+            exit 1
+          fi
       - name: Update Win zip/jar on S3
         id: update-s3
         run: |