flink-end-to-end-tests/test-scripts/test_streaming_classloader.sh

#!/usr/bin/env bash
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source "$(dirname "$0")"/common.sh

TEST_PROGRAM_JAR=${END_TO_END_DIR}/flink-parent-child-classloading-test-program/target/ClassLoaderTestProgram.jar

echo "Moving fake LibPackage.jar from end-to-end tests to lib/"
cp ${END_TO_END_DIR}/flink-parent-child-classloading-test-lib-package/target/LibPackage.jar ${FLINK_DIR}/lib/

function classloader_cleanup() {
  stop_cluster
  $FLINK_DIR/bin/taskmanager.sh stop-all
}
on_exit classloader_cleanup

echo "Testing parent-first class loading"

delete_config_key "classloader.parent-first-patterns"
set_config_key "classloader.resolve-order" "parent-first"

start_cluster

$FLINK_DIR/bin/flink run -p 1 $TEST_PROGRAM_JAR --resolve-order parent-first --output $TEST_DATA_DIR/out/cl_out_pf

stop_cluster

OUTPUT=`cat $TEST_DATA_DIR/out/cl_out_pf`
# first field: whether we found the method on TaskManager
# result of getResource("parent-child-test.properties"), should be from the parent
# ordered result of getResources("parent-child-test.properties"), should have parent first
EXPECTED="Hello, from lib package!:hello-from-lib-package:hello-from-lib-packagehello-from-user-package"
if ! [[ "$OUTPUT" =~ $EXPECTED ]]; then
  echo "Output from Flink program does not match expected output."
  echo -e "EXPECTED: $EXPECTED"
  echo -e "ACTUAL: $OUTPUT"
  exit 1
fi

# This verifies that Flink classes are still resolved from the parent because the default
# "parent-first-pattern" is "org.apache.flink"
echo "Testing child-first class loading with Flink classes loaded via parent"

delete_config_key "classloader.parent-first-patterns"
set_config_key "classloader.resolve-order" "child-first"

start_cluster

$FLINK_DIR/bin/flink run -p 1 $TEST_PROGRAM_JAR --resolve-order parent-first --output $TEST_DATA_DIR/out/cl_out_cf_pf

stop_cluster

OUTPUT=`cat $TEST_DATA_DIR/out/cl_out_cf_pf`
# first field: whether we found the method on TaskManager
# result of getResource("parent-child-test.properties"), should be from the child
# ordered result of getResources("parent-child-test.properties"), should be child first
EXPECTED="Hello, from lib package!:hello-from-user-package:hello-from-user-packagehello-from-lib-package"
if ! [[ "$OUTPUT" =~ $EXPECTED ]]; then
  echo "Output from Flink program does not match expected output."
  echo -e "EXPECTED: $EXPECTED"
  echo -e "ACTUAL: $OUTPUT"
  exit 1
fi

echo "Testing child-first class loading"

set_config_key "classloader.parent-first-patterns" "foo.bar"
set_config_key "classloader.resolve-order" "child-first"

start_cluster

$FLINK_DIR/bin/flink run -p 1 $TEST_PROGRAM_JAR --resolve-order child-first --output $TEST_DATA_DIR/out/cl_out_cf

stop_cluster

OUTPUT=`cat $TEST_DATA_DIR/out/cl_out_cf`
# first field: whether we found the method on TaskManager
# result of getResource("parent-child-test.properties"), should be from the child
# ordered result of getResources("parent-child-test.properties"), should be child first
EXPECTED="Hello, from user package!:hello-from-user-package:hello-from-user-packagehello-from-lib-package"
if ! [[ "$OUTPUT" =~ $EXPECTED ]]; then
  echo "Output from Flink program does not match expected output."
  echo -e "EXPECTED: $EXPECTED"
  echo -e "ACTUAL: $OUTPUT"
  exit 1
fi