[FLINK-32834] Add usage information and -h option to low-level scripts

tools/ci/license_check.sh

@@ -17,6 +17,32 @@
 # limitations under the License.
 ################################################################################
 
+usage() {
+  echo "Usage: $0 <maven-build-output> <deployed-artifacts-folder>"
+  echo "    <maven-build-output>                 A file containing the output of the Maven build."
+  echo "    <deployed-artifacts-folder>          A directory containing a Maven repository into which the Flink artifacts were deployed."
+  echo ""
+  echo "Example preparation:"
+  echo "    mvnw clean deploy -DaltDeploymentRepository=validation_repository::default::file:<deployed-artifacts-folder> > <maven-build-output>"
+  echo ""
+  echo "The environment variable MVN is used to specify the Maven binaries; defaults to 'mvnw'."
+  echo "See further details in the JavaDoc of LicenseChecker."
+}
+
+while getopts 'h' o; do
+  case "${o}" in
+    h)
+      usage
+      exit 0
+      ;;
+  esac
+done
+
+if [[ "$#" != "2" ]]; then
+  usage
+  exit 1
+fi
+
 MVN_CLEAN_COMPILE_OUT=$1
 FLINK_DEPLOYED_ROOT=$2
 

tools/ci/verify_bundled_optional.sh

@@ -17,6 +17,30 @@
 # limitations under the License.
 #
 
+usage() {
+  echo "Usage: $0 <maven-build-output>"
+  echo "    <maven-build-output>                 A file containing the output of the Maven build."
+  echo ""
+  echo "mvnw clean package > <maven-build-output>"
+  echo ""
+  echo "The environment variable MVN is used to specify the Maven binaries; defaults to 'mvnw'."
+  echo "See further details in the JavaDoc of ShadeOptionalChecker."
+}
+
+while getopts 'h' o; do
+  case "${o}" in
+    h)
+      usage
+      exit 0
+      ;;
+  esac
+done
+
+if [[ "$#" != "1" ]]; then
+  usage
+  exit 1
+fi
+
 ## Checks that all bundled dependencies are marked as optional in the poms
 MVN_CLEAN_COMPILE_OUT=$1
 

tools/ci/verify_scala_suffixes.sh

@@ -37,6 +37,24 @@
 #
 # The script uses 'mvn dependency:tree -Dincludes=org.scala-lang' to list Scala
 # dependent modules.
+
+
+usage() {
+  echo "Usage: $0"
+  echo ""
+  echo "The environment variable MVN is used to specify the Maven binaries; defaults to 'mvnw'."
+  echo "See further details in the JavaDoc of ScalaSuffixChecker."
+}
+
+while getopts 'h' o; do
+  case "${o}" in
+    h)
+      usage
+      exit 0
+      ;;
+  esac
+done
+
 MVN=${MVN:-./mvnw}
 
 echo "--- Flink Scala Dependency Analyzer ---"