SQOOP-1816: Sqoop2: Add logging to the test DerbyProvider implementation

(Jarek Jarcec Cecho via Abraham Elmahrek)

common-test/src/main/java/org/apache/sqoop/common/test/db/DerbyProvider.java

@@ -17,8 +17,10 @@
  */
 package org.apache.sqoop.common.test.db;
 
+import org.apache.log4j.Level;
 import org.apache.log4j.Logger;
 import org.apache.derby.drda.NetworkServerControl;
+import org.apache.sqoop.common.test.utils.LoggerWriter;
 
 import java.net.InetAddress;
 
@@ -40,7 +42,12 @@ public void start() {
     // Start embedded server
     try {
       server = new NetworkServerControl(InetAddress.getByName("localhost"), 1527);
-      server.start(null);
+      server.start(new LoggerWriter(LOG, Level.INFO));
+
+      // Start won't thrown an exception in case that it fails to start, one
+      // have to explicitly call ping() in order to verify if the server is
+      // up. Check DERBY-1465 for more details.
+      server.ping();
     } catch (Exception e) {
       LOG.error("Can't start Derby network server", e);
       throw new RuntimeException("Can't derby server", e);

common-test/src/main/java/org/apache/sqoop/common/test/utils/LoggerWriter.java

@@ -0,0 +1,65 @@
+/**
+ * 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.sqoop.common.test.utils;
+
+import org.apache.log4j.Level;
+import org.apache.log4j.Logger;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.Writer;
+
+/**
+ * PrintWriter implementation that will forward all the messages into given logger.
+ */
+public class LoggerWriter extends PrintWriter {
+
+  public LoggerWriter(final Logger logger, final Level level) {
+    super(new InternalWriter(logger, level));
+  }
+
+  private static class InternalWriter extends Writer {
+
+    private final Logger logger;
+    private final Level level;
+
+    public InternalWriter(final Logger logger, final Level level) {
+      this.logger = logger;
+      this.level = level;
+    }
+
+    @Override
+    public void write(char[] chars, int offset, int len) throws IOException {
+      while(len > 0 && (chars[len - 1] == '\n' || chars[len - 1] == '\r')) {
+        len--;
+      }
+
+      if(len > 0) {
+        logger.log(level, String.copyValueOf(chars, offset, len));
+      }
+    }
+
+    @Override
+    public void flush() throws IOException {
+    }
+
+    @Override
+    public void close() throws IOException {
+    }
+  }
+}