HBASE-25696 Need to initialize SLF4JBridgeHandler in jul-to-slf4j for redirecting jul to slf4j (#3093)

Signed-off-by: Michael Stack <stack@apache.org>

Author: Apache9

bin/hbase

@@ -306,6 +306,8 @@ for f in "${HBASE_HOME}"/lib/client-facing-thirdparty/*.jar; do
     CLASSPATH="${CLASSPATH}:${f}"
   fi
 done
+# redirect java.util.logging to slf4j
+HBASE_OPTS="$HBASE_OPTS -Djava.util.logging.config.class=org.apache.hadoop.hbase.logging.JulToSlf4jInitializer"
 
 # default log directory & file
 if [ "$HBASE_LOG_DIR" = "" ]; then

bin/hbase.cmd

@@ -326,6 +326,9 @@ set HBASE_OPTS=%HBASE_OPTS% -Dhbase.home.dir="%HBASE_HOME%"
 set HBASE_OPTS=%HBASE_OPTS% -Dhbase.id.str="%HBASE_IDENT_STRING%"
 set HBASE_OPTS=%HBASE_OPTS% -XX:OnOutOfMemoryError="taskkill /F /PID %p"
 
+@rem redirect java.util.logging to slf4j
+set HBASE_OPTS=%HBASE_OPTS% -Djava.util.logging.config.class="org.apache.hadoop.hbase.logging.JulToSlf4jInitializer"
+
 if not defined HBASE_ROOT_LOGGER (
   set HBASE_ROOT_LOGGER=INFO,console
 )

hbase-common/src/test/java/org/apache/hadoop/hbase/logging/TestJul2Slf4j.java

@@ -0,0 +1,82 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.logging;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+import java.io.IOException;
+import org.apache.hadoop.hbase.HBaseClassTestRule;
+import org.apache.hadoop.hbase.testclassification.MiscTests;
+import org.apache.hadoop.hbase.testclassification.SmallTests;
+import org.apache.log4j.Appender;
+import org.apache.log4j.Level;
+import org.apache.log4j.LogManager;
+import org.apache.log4j.spi.LoggingEvent;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+import org.mockito.ArgumentCaptor;
+
+/**
+ * This should be in the hbase-logging module but the {@link HBaseClassTestRule} is in hbase-common
+ * so we can only put the class in hbase-common module for now...
+ */
+@Category({ MiscTests.class, SmallTests.class })
+public class TestJul2Slf4j {
+
+  @ClassRule
+  public static final HBaseClassTestRule CLASS_RULE =
+    HBaseClassTestRule.forClass(TestJul2Slf4j.class);
+
+  static {
+    System.setProperty("java.util.logging.config.class", JulToSlf4jInitializer.class.getName());
+  }
+
+  private String loggerName = getClass().getName();
+
+  private Appender mockAppender;
+
+  @Before
+  public void setUp() {
+    mockAppender = mock(Appender.class);
+    LogManager.getRootLogger().addAppender(mockAppender);
+  }
+
+  @After
+  public void tearDown() {
+    LogManager.getRootLogger().removeAppender(mockAppender);
+  }
+
+  @Test
+  public void test() throws IOException {
+    java.util.logging.Logger logger = java.util.logging.Logger.getLogger(loggerName);
+    logger.info(loggerName);
+    ArgumentCaptor<LoggingEvent> captor = ArgumentCaptor.forClass(LoggingEvent.class);
+    verify(mockAppender, times(1)).doAppend(captor.capture());
+    LoggingEvent loggingEvent = captor.getValue();
+    assertThat(loggingEvent.getLevel(), is(Level.INFO));
+    assertEquals(loggerName, loggingEvent.getRenderedMessage());
+  }
+}

hbase-logging/pom.xml

@@ -83,6 +83,11 @@
       <artifactId>slf4j-log4j12</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>jul-to-slf4j</artifactId>
+      <scope>provided</scope>
+    </dependency>
     <dependency>
       <groupId>log4j</groupId>
       <artifactId>log4j</artifactId>

hbase-logging/src/main/java/org/apache/hadoop/hbase/logging/JulToSlf4jInitializer.java

@@ -0,0 +1,42 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.logging;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.logging.LogManager;
+import org.apache.yetus.audience.InterfaceAudience;
+import org.slf4j.bridge.SLF4JBridgeHandler;
+
+/**
+ * Setup {@link SLF4JBridgeHandler}.
+ * <p/>
+ * Set the system property {@code java.util.logging.config.class} to this class to initialize the
+ * direction for java.util.logging to slf4j.
+ */
+@InterfaceAudience.Private
+public class JulToSlf4jInitializer {
+
+  private static final String PROPERTIES = "handlers=" + SLF4JBridgeHandler.class.getName();
+
+  public JulToSlf4jInitializer() throws IOException {
+    LogManager.getLogManager()
+      .readConfiguration(new ByteArrayInputStream(PROPERTIES.getBytes(StandardCharsets.UTF_8)));
+  }
+}

pom.xml

@@ -595,6 +595,7 @@
             <systemPropertyVariables>
               <test.build.classes>${test.build.classes}</test.build.classes>
               <java.io.tmpdir>${test.tmp.dir}</java.io.tmpdir>
+              <java.util.logging.config.class>org.apache.hadoop.hbase.logging.JulToSlf4jInitializer</java.util.logging.config.class>
             </systemPropertyVariables>
             <excludes>
               <!-- users can add -D option to skip particular test classes