'conf' directory added to classpath

bin/configure-sqoop now puts the 'conf' directory on the classpath.
Users can override this by setting $SQOOP_CONF_DIR.
Added src/perftest/ExtConnFactoryTest and ExtFactory, that demonstrates
the configuration is being correctly read.

From: Aaron Kimball <aaron@cloudera.com>

git-svn-id: https://svn.apache.org/repos/asf/incubator/sqoop/trunk@1149921 13f79535-47bb-0310-9956-ffa450edef68

bin/configure-sqoop

@@ -58,6 +58,9 @@ if [ -d "$SQOOP_HOME/lib" ]; then
   done
 fi
 
+SQOOP_CONF_DIR=${SQOOP_CONF_DIR:-${SQOOP_HOME}/conf}
+SQOOP_CLASSPATH=${SQOOP_CONF_DIR}:${SQOOP_CLASSPATH}
+
 # If there's a build subdir, use Ivy-retrieved dependencies too.
 if [ -d "$SQOOP_HOME/build/ivy/lib/sqoop" ]; then
   for f in $SQOOP_HOME/build/ivy/lib/sqoop/*/*.jar; do

src/perftest/ExtConnFactoryTest.java

@@ -0,0 +1,92 @@
+/**
+ * Licensed to Cloudera, Inc. under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  Cloudera, Inc. 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.
+ */
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+import com.cloudera.sqoop.Sqoop;
+import com.cloudera.sqoop.SqoopOptions;
+import com.cloudera.sqoop.manager.ExportJobContext;
+import com.cloudera.sqoop.manager.ImportJobContext;
+import com.cloudera.sqoop.manager.SqlManager;
+import com.cloudera.sqoop.util.ExportException;
+import com.cloudera.sqoop.util.ImportException;
+
+/**
+ * Test external connection factory classes on the classpath.
+ * This adds a connection factory that will accept all connect strings,
+ * but then promptly throws an error message if you try to import or
+ * export a table.
+ *
+ * You'll need to specify the sqoop.connection.factories property
+ * (either in conf/sqoop-default.xml) or on the command line with -D;
+ * this should include the 'ExtConnFactoryTest.ExtFactory' class.
+ *
+ * Run with: src/scripts/run-perftest.sh ExtConnFactoryTest \
+ *     (normal sqoop arguments)
+ */
+public final class ExtConnFactoryTest {
+  private ExtConnFactoryTest() {
+  }
+
+  /**
+   * A ConnManager that cannot satisfy any connection requests;
+   * all operations fail with an error message.
+   */
+  public static class FailingManager extends SqlManager {
+
+    public FailingManager(SqoopOptions options) {
+      super(options);
+    }
+
+    @Override
+    public Connection getConnection() throws SQLException {
+      throw new SQLException("This manager cannot create a connection");
+    }
+
+    @Override
+    public void importTable(ImportJobContext context)
+        throws ImportException {
+      throw new ImportException("This manager cannot read tables.");
+    }
+
+    @Override
+    protected ResultSet execute(String stmt, Object... args)
+        throws SQLException {
+      throw new SQLException("This manager cannot execute SQL statements");
+    }
+
+    @Override
+    public void exportTable(ExportJobContext context) throws ExportException {
+      throw new ExportException("This manager cannot write tables.");
+    }
+
+    @Override
+    public String getDriverClass() {
+      return null;
+    }
+  }
+
+  /**
+   * Run the connection factory test.
+   */
+  public static void main(String [] args) throws Exception {
+    Sqoop.main(args);
+  }
+}

src/perftest/ExtFactory.java

@@ -0,0 +1,42 @@
+/**
+ * Licensed to Cloudera, Inc. under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  Cloudera, Inc. 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.
+ */
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import com.cloudera.sqoop.SqoopOptions;
+import com.cloudera.sqoop.manager.ConnManager;
+import com.cloudera.sqoop.manager.ManagerFactory;
+
+/**
+ * An external ConnFactory used by ExtConnFactoryTest.
+ */
+public class ExtFactory extends ManagerFactory {
+  public static final Log LOG =
+      LogFactory.getLog(ExtFactory.class.getName());
+
+  public ExtFactory() {
+    LOG.info("Instantiating ExtFactory");
+  }
+
+  public ConnManager accept(SqoopOptions options) {
+    LOG.info("ExtFactory accepting manager for: "
+        + options.getConnectString());
+    return new ExtConnFactoryTest.FailingManager(options);
+  }
+}