Added SocketFactories, which eases integration with pgjdbc

junixsocket-common/src/main/java/org/newsclub/net/unix/socketfactory/PostgresqlAFUNIXSocketFactory.java

@@ -0,0 +1,88 @@
+/**
+ * junixsocket
+ *
+ * Copyright (c) 2009,2014 Christian Kohlschütter
+ *
+ * The author 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.newsclub.net.unix.socketfactory;
+
+import org.newsclub.net.unix.AFUNIXSocket;
+import org.newsclub.net.unix.AFUNIXSocketAddress;
+
+import javax.net.SocketFactory;
+import java.io.File;
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.Socket;
+
+/**
+ * A simple {@link SocketFactory} which takes the connection path and port as constructor parameters.
+ * <p>
+ * This implementation breaks the SocketFactory-spec by returning a connected socket in the createSocket-method.
+ * This is necessary to work around some limitations in how the
+ * <a href="https://github.com/pgjdbc/pgjdbc">PGJDBC-library</a> uses a socket factory.
+ * </p>
+ * <p>
+ * To us this in pgjdbc, add the following to your connection-url:
+ * <code>
+ * &amp;socketFactory=org.newsclub.net.unix.socketfactory.PostgresqlAFUNIXSocketFactory&amp;socketFactoryArg=[path-to-the-unix-socket]
+ * For many distros the default path is /var/run/postgresql/.s.PGSQL.5432
+ * </code>
+ * </p>
+ */
+public class PostgresqlAFUNIXSocketFactory extends SocketFactory {
+
+  private final int port;
+  private final File file;
+
+  public PostgresqlAFUNIXSocketFactory(String path) {
+    this(path, 0);
+  }
+
+  public PostgresqlAFUNIXSocketFactory(String path, int port) {
+    this.file = new File(path);
+    this.port = port;
+  }
+
+
+  /**
+   * Creates a connected socket to the file/port given as constructor parameters.
+   */
+  @Override
+  public Socket createSocket() throws IOException {
+    AFUNIXSocket s = AFUNIXSocket.newInstance();
+    s.connect(new AFUNIXSocketAddress(file, port));
+    return s;
+  }
+
+  @Override
+  public Socket createSocket(String s, int i) throws IOException {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public Socket createSocket(String s, int i, InetAddress inetAddress, int i1) throws IOException {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public Socket createSocket(InetAddress inetAddress, int i) throws IOException {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public Socket createSocket(InetAddress inetAddress, int i, InetAddress inetAddress1, int i1) throws IOException {
+    throw new UnsupportedOperationException();
+  }
+}

junixsocket-common/src/main/java/org/newsclub/net/unix/socketfactory/SimpleAFUNIXSocketFactory.java

@@ -0,0 +1,60 @@
+/**
+ * junixsocket
+ *
+ * Copyright (c) 2009,2014 Christian Kohlschütter
+ *
+ * The author 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.newsclub.net.unix.socketfactory;
+
+import org.newsclub.net.unix.AFUNIXSocket;
+import org.newsclub.net.unix.AFUNIXSocketAddress;
+
+import javax.net.SocketFactory;
+import java.io.File;
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.Socket;
+
+/**
+ * A simple {@link SocketFactory} which returns {@link AFUNIXSocket}s.
+ */
+public class SimpleAFUNIXSocketFactory extends SocketFactory {
+
+  @Override
+  public Socket createSocket() throws IOException {
+    return AFUNIXSocket.newInstance();
+  }
+
+  @Override
+  public Socket createSocket(String s, int port) throws IOException {
+    AFUNIXSocket afunixSocket = AFUNIXSocket.newInstance();
+    afunixSocket.connect(new AFUNIXSocketAddress(new File(s), port));
+    return afunixSocket;
+  }
+
+  @Override
+  public Socket createSocket(String s, int i, InetAddress inetAddress, int i1) throws IOException {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public Socket createSocket(InetAddress inetAddress, int i) throws IOException {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public Socket createSocket(InetAddress inetAddress, int i, InetAddress inetAddress1, int i1) throws IOException {
+    throw new UnsupportedOperationException();
+  }
+}