@Override
public OtpErlangObject call(
final int timeout,
final OtpErlangObject gleader,
final String module,
final String fun,
final String signature,
final Object... args0)
throws RpcException {
if (stopped) {
return null;
}
tryConnect();
OtpErlangObject result;
try {
result =
rpcHelper.rpcCall(
localNode,
data.getNodeName(),
false,
gleader,
module,
fun,
timeout,
signature,
args0);
} catch (final SignatureException e) {
throw new RpcException(e);
}
return result;
}
private void tryConnect() throws RpcException {
synchronized (connectLock) {
switch (state) {
case DISCONNECTED:
reported = false;
if (connectRetry()) {
state = State.CONNECTED;
} else if (connectOnce) {
state = State.DOWN;
} else {
state = State.DISCONNECTED;
}
break;
case CONNECTED:
break;
case DOWN:
try {
if (process != null) {
process.terminate();
}
} catch (final DebugException e) {
ErlLogger.info(e);
}
// TODO restart it??
// process =
if (!stopped) {
final String msg = reportRuntimeDown(data.getNodeName());
throw new RpcException(msg);
}
}
}
}
@Override
public void send(final String name, final Object msg) {
try {
tryConnect();
rpcHelper.send(localNode, data.getNodeName(), name, msg);
} catch (final SignatureException e) {
} catch (final RpcException e) {
}
}
public void startLocalNode() {
boolean nodeCreated = false;
synchronized (localNodeLock) {
int i = 0;
do {
try {
i++;
localNode = ErlRuntime.createOtpNode(data.getCookie(), data.hasLongName());
localNode.registerStatusHandler(statusWatcher);
nodeCreated = true;
} catch (final IOException e) {
ErlLogger.error("ErlRuntime could not be created (%s), retrying %d", e.getMessage(), i);
try {
localNodeLock.wait(300);
} catch (final InterruptedException e1) {
}
}
} while (!nodeCreated && i < 10);
}
}
public ErlRuntime(
final String name,
final String cookie,
final IProvider<IProcess> processProvider,
final boolean reportWhenDown,
final boolean longName,
final boolean connectOnce) {
state = State.DISCONNECTED;
this.processProvider = processProvider;
process = processProvider.get();
this.connectOnce = connectOnce;
stopped = false;
data = new RuntimeData();
data.setLongName(longName);
data.setCookie(cookie);
data.setNodeName(name);
data.setReportErrors(reportWhenDown);
statusWatcher =
new OtpNodeStatus() {
@Override
public void remoteStatus(final String node, final boolean up, final Object info) {
if (node.equals(data.getNodeName())) {
if (up) {
ErlLogger.debug("Node %s is up", data.getNodeName());
connectRetry();
} else {
ErlLogger.debug("Node %s is down: %s", data.getNodeName(), info);
state = State.DOWN;
}
}
}
};
startLocalNode();
// if (epmdWatcher.isRunningNode(name)) {
// connect();
// }
}
@Override
public void cast(
final OtpErlangObject gleader,
final String module,
final String fun,
final String signature,
final Object... args0)
throws RpcException {
tryConnect();
try {
rpcHelper.rpcCast(
localNode, data.getNodeName(), false, gleader, module, fun, signature, args0);
} catch (final SignatureException e) {
throw new RpcException(e);
}
}
@Override
public void async_call_result(
final IRpcResultCallback cb,
final String m,
final String f,
final String signature,
final Object... args)
throws RpcException {
final OtpErlangAtom gleader = new OtpErlangAtom("user");
try {
rpcHelper.rpcCastWithProgress(
cb, localNode, data.getNodeName(), false, gleader, m, f, signature, args);
} catch (final SignatureException e) {
throw new RpcException(e);
}
}
@Override
public void async_call_cb(
final IRpcCallback cb,
final int timeout,
final OtpErlangObject gleader,
final String module,
final String fun,
final String signature,
final Object... args)
throws RpcException {
tryConnect();
try {
rpcHelper.makeAsyncCbCall(
localNode, data.getNodeName(), cb, timeout, gleader, module, fun, signature, args);
} catch (final SignatureException e) {
throw new RpcException(e);
}
}
private String reportRuntimeDown(final String peer) {
final String fmt = "Backend '%s' is down";
final String msg = String.format(fmt, peer);
if (data.getReportErrors() && !reported) {
final String user = System.getProperty("user.name");
String msg1;
if (connectOnce) {
msg1 =
"It is likely that your network is misconfigured or uses 'strange' host names.\n"
+ "Please check the "
+ "Window->preferences->erlang->network page for hints about that."
+ "\n\n"
+ "Also, check if you can create and connect two erlang nodes on your machine\n"
+ "using \"erl -name foo1\" and \"erl -name foo2\".";
} else {
msg1 =
"If you didn't shut it down on purpose, it is an "
+ "unrecoverable error, please restart Eclipse. ";
}
final String bigMsg =
msg
+ "\n\n"
+ msg1
+ "\n\n"
+ "If an error report named '"
+ user
+ "_<timestamp>.txt' has been created in your home directory,\n "
+ "please consider reporting the problem. \n"
+ (SystemConfiguration.hasFeatureEnabled("erlide.ericsson.user")
? ""
: "http://www.assembla.com/spaces/erlide/support/tickets");
MessageReporter.showError(bigMsg, ReporterPosition.CORNER);
reported = true;
}
return msg;
}
@Override
public RuntimeInfo getRuntimeInfo() {
return data.getRuntimeInfo();
}
@Override
public String getNodeName() {
return data.getNodeName();
}