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/*
* Copyright 2022 Jérôme de Bretagne
*
* Licensed 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.
*
* %ExternalCopyright%
*/
import java.io.IOException;
import com.ericsson.otp.erlang.OtpGenericTransportFactory;
import com.ericsson.otp.erlang.OtpLocalNode;
import com.ericsson.otp.erlang.OtpNode;
import com.ericsson.otp.erlang.OtpPeer;
import com.ericsson.otp.erlang.OtpServerTransport;
import com.ericsson.otp.erlang.OtpSocketTransportFactory;
import com.ericsson.otp.erlang.OtpTransport;
import com.ericsson.otp.erlang.OtpTransportFactory;
public class GenericTransportFactoryTest {
/**
* A minimalist custom generic transport factory working without epmd,
* using the node name as the identifier of the listening socket port.
*/
public static class TestFactory extends OtpGenericTransportFactory {
OtpSocketTransportFactory tf = new OtpSocketTransportFactory();
String fake_epmd_name;
int fake_epmd_port;
public OtpTransport createTransport(final OtpPeer peer)
throws IOException {
String addr = "localhost";
String peerName = peer.alive();
int port = 0;
if (peerName == fake_epmd_name) {
port = fake_epmd_port;
}
else {
fail("Fake epmd don't know port nr of " + peerName);
}
System.out.println("Creating transport to " + addr + ", " + port);
return tf.createTransport(addr, port);
}
public OtpServerTransport createServerTransport(final OtpLocalNode node)
throws IOException {
String nodeName = node.alive();
OtpServerTransport transport = tf.createServerTransport(0);
System.out.println("Creating server transport for node "
+ nodeName + " to port "
+ transport.getLocalPort());
// Store last created server node in our fake "epmd database".
fake_epmd_name = nodeName;
fake_epmd_port = transport.getLocalPort();
return transport;
}
}
public static void main(final String[] args) throws IOException {
OtpTransportFactory customFactory = new TestFactory();
// The 2 test nodes with arbitrary socket port numbers
String nodeName1 = "Alice";
String nodeName2 = "Bob";
// Create the first node
final OtpNode node1 = new OtpNode(nodeName1, customFactory);
// Create the second node
final OtpNode node2 = new OtpNode(nodeName2, customFactory);
// Finally test the connection between the 2 nodes
if (!node1.ping(nodeName2, 2000)) {
fail("The 2 nodes couldn't connect");
}
}
private static void fail(final String string) {
System.err.println(string);
System.exit(1);
}
}
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