/**
* Connects this member to the cluster using the given <code>loadFactor</code>. The <code>
* loadFactor</code> defines the (approximate) relative load that this member will receive.
*
* <p>A good default value is 100, which will give this member 100 nodes on the distributed hash
* ring. Giving all members (proportionally) lower values will result in a less evenly distributed
* hash.
*
* @param loadFactor The load factor for this node.
* @throws ConnectionFailedException when an error occurs while connecting
*/
public synchronized void connect(int loadFactor) throws ConnectionFailedException {
this.currentLoadFactor = loadFactor;
Assert.isTrue(loadFactor >= 0, "Load Factor must be a positive integer value.");
Assert.isTrue(
channel.getReceiver() == null || channel.getReceiver() == messageReceiver,
"The given channel already has a receiver configured. "
+ "Has the channel been reused with other Connectors?");
try {
channel.setReceiver(messageReceiver);
if (channel.isConnected() && !clusterName.equals(channel.getClusterName())) {
throw new AxonConfigurationException(
"The Channel that has been configured with this JGroupsConnector "
+ "is already connected to another cluster.");
} else if (channel.isConnected()) {
// we need to fetch state now that we have attached our MessageReceiver
channel.getState(null, 10000);
} else {
// we need to connect. This will automatically fetch state as well.
channel.connect(clusterName, null, 10000);
}
updateMembership();
} catch (Exception e) {
joinedCondition.markJoined(false);
channel.disconnect();
throw new ConnectionFailedException("Failed to connect to JGroupsConnectorFactoryBean", e);
}
}
protected void _init(JChannel ch, long sleep_time, String name) throws Exception {
this.sleep_time = sleep_time;
channel = ch;
if (name != null) channel.setName(name);
channel.connect(getClass().getSimpleName());
channel.setReceiver(receiver);
try {
MBeanServer server = Util.getMBeanServer();
JmxConfigurator.registerChannel(
channel, server, "jgroups-" + name, channel.getClusterName(), true);
} catch (Throwable ex) {
System.err.println("registering the channel with JMX failed: " + ex);
}
}
public void testLifecycle() throws Exception {
fc1 = new ForkChannel(ch, "stack", "fc1");
assert fc1.isOpen() && !fc1.isConnected() && !fc1.isClosed() : "state=" + fc1.getState();
ch.connect(CLUSTER);
assert fc1.isOpen() && !fc1.isConnected() && !fc1.isClosed() : "state=" + fc1.getState();
fc1.connect("bla");
assert fc1.isOpen() && fc1.isConnected() && !fc1.isClosed() : "state=" + fc1.getState();
assert ch.getAddress().equals(fc1.getAddress());
assert ch.getClusterName().equals(fc1.getClusterName());
assert ch.getView().equals(fc1.getView());
fc1.disconnect();
assert fc1.isOpen() && !fc1.isConnected() && !fc1.isClosed() : "state=" + fc1.getState();
fc1.connect("foobar");
assert fc1.isOpen() && fc1.isConnected() && !fc1.isClosed() : "state=" + fc1.getState();
Util.close(fc1);
assert !fc1.isOpen() && !fc1.isConnected() && fc1.isClosed() : "state=" + fc1.getState();
try {
fc1.connect("whocares");
assert false : "a closed fork channel cannot be reconnected";
} catch (Exception ex) {
assert ex instanceof IllegalStateException;
}
assert !fc1.isOpen() && !fc1.isConnected() && fc1.isClosed() : "state=" + fc1.getState();
Util.close(ch);
assert !fc1.isOpen() && !fc1.isConnected() && fc1.isClosed() : "state=" + fc1.getState();
try {
fc1.send(null, "hello");
assert false
: "sending on a fork-channel with a disconnected main-channel should throw an exception";
} catch (Throwable t) {
System.out.println(
"got an exception (as expected) sending on a fork-channel where the main-channel is disconnected: "
+ t);
}
}
public void init(String props, String name) throws Throwable {
channel = new JChannel(props);
if (name != null) channel.setName(name);
disp = new RpcDispatcher(channel, null, this, this);
disp.setMethodLookup(
new MethodLookup() {
public Method findMethod(short id) {
return METHODS[id];
}
});
disp.setRequestMarshaller(new CustomMarshaller());
channel.connect(groupname);
local_addr = channel.getAddress();
try {
MBeanServer server = Util.getMBeanServer();
JmxConfigurator.registerChannel(channel, server, "jgroups", channel.getClusterName(), true);
} catch (Throwable ex) {
System.err.println("registering the channel in JMX failed: " + ex);
}
if (members.size() < 2) return;
Address coord = members.get(0);
ConfigOptions config =
(ConfigOptions)
disp.callRemoteMethod(
coord, new MethodCall(GET_CONFIG), new RequestOptions(ResponseMode.GET_ALL, 5000));
if (config != null) {
this.oob = config.oob;
this.sync = config.sync;
this.num_threads = config.num_threads;
this.num_msgs = config.num_msgs;
this.msg_size = config.msg_size;
this.anycast_count = config.anycast_count;
this.read_percentage = config.read_percentage;
System.out.println("Fetched config from " + coord + ": " + config);
} else System.err.println("failed to fetch config from " + coord);
}
