// send a delete request to a server
// 1 < key < max key number
// server: id of server to delete the key
private void sendDeleteRequest(int key, int server) {
IQueryRequest queryReq = new QueryRequest(mRequestId++, server, key);
try {
if (mDhtServerArray[server - 1] != null) {
UnicastRemoteObject.exportObject(queryReq);
mDhtServerArray[server - 1].delete(queryReq);
appendOutput("DHT Server:\n" + queryReq.getMessage());
} else appendOutput("sendDeleteRequest: server " + server + " is not initialized");
} catch (Exception e) {
appendOutput("sendDeleteRequest: " + server + e.getMessage());
}
}
// send a lookup request to a server
// 1 < key < max key number
// server: id of server to lookup the key
private void sendLookupRequest(int key, int server) {
IQueryRequest queryReq = new QueryRequest(mRequestId++, server, key);
try {
if (mDhtServerArray[server - 1] != null) {
UnicastRemoteObject.exportObject(queryReq);
String value = (String) mDhtServerArray[server - 1].lookup(queryReq);
appendOutput(
"DHT Server:\n" + queryReq.getMessage() + "\nDHT Client:\nlookup value is " + value);
} else appendOutput("sendLookupRequest: server " + server + " is not initialized");
} catch (Exception e) {
appendOutput("sendLookupRequest: " + server + e.getMessage());
}
}