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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jrt;
class InvocationServer {
private Connection conn;
private Request request;
private Method method;
private int replyKey;
private boolean noReply;
private TieBreaker done;
public InvocationServer(Connection conn, Request request, Method method,
int replyKey, boolean noReply) {
this.conn = conn;
this.request = request;
this.method = method;
this.replyKey = replyKey;
this.noReply = noReply;
request.serverHandler(this);
done = conn.startRequest();
}
public Target getTarget() {
return conn;
}
public void invoke() {
if (method != null) {
if (method.checkParameters(request)) {
if (method.requestAccessFilter().allow(request)) {
method.invoke(request);
} else {
request.setError(ErrorCode.PERMISSION_DENIED, "Permission denied");
}
} else {
request.setError(ErrorCode.WRONG_PARAMS, "Parameters in " + request + " does not match " + method);
}
} else {
request.setError(ErrorCode.NO_SUCH_METHOD, "No such method");
}
if (!request.isDetached()) {
returnRequest();
}
}
public void returnRequest() {
if (!conn.completeRequest(done)) {
throw new IllegalStateException("Request already returned");
}
if (noReply) {
return;
}
if (!request.isError() && !method.checkReturnValues(request)) {
request.setError(ErrorCode.WRONG_RETURN, "Return values in " + request + " does not match " + method);
}
if (request.isError()) {
conn.postPacket(new ErrorPacket(0, replyKey,
request.errorCode(),
request.errorMessage()));
} else {
conn.postPacket(new ReplyPacket(0, replyKey,
request.returnValues()));
}
}
}
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