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package pl.edu.mimuw.cloudatlas.agent;
import pl.edu.mimuw.cloudatlas.agent.modules.*;
import pl.edu.mimuw.cloudatlas.agent.modules.Module;
import pl.edu.mimuw.cloudatlas.api.Api;
import pl.edu.mimuw.cloudatlas.model.PathName;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
public class AgentConfig {
private HashMap<ModuleType, Executor> executors;
HashMap<ModuleType, Module> modules;
public HashMap<ModuleType, Executor> getExecutors() {
return executors;
}
public void runRegistry(EventBus eventBus) {
try {
NewApiImplementation api = new NewApiImplementation(eventBus);
Api apiStub =
(Api) UnicastRemoteObject.exportObject(api, 0);
Registry registry = LocateRegistry.getRegistry();
registry.rebind("Api", apiStub);
System.out.println("Agent: api bound");
} catch (Exception e) {
System.err.println("Agent registry initialization exception:");
e.printStackTrace();
}
}
private HashMap<ModuleType, Module> initializeModules() throws UnknownHostException, SocketException, NullPointerException {
Long freshnessPeriod = Long.getLong("freshness_period");
Integer port = Integer.getInteger("UDUPServer.port");
Integer timeout = Integer.getInteger("UDUPServer.timeout");
Integer bufsize = Integer.getInteger("UDUPServer.bufsize");
InetAddress serverAddr = InetAddress.getByName(System.getProperty("UDUPServer.hostname"));
String ourPath = System.getProperty("zone_path");
HashMap<ModuleType, Module> modules = new HashMap<ModuleType, Module>();
modules.put(ModuleType.TIMER_SCHEDULER, new TimerScheduler(ModuleType.TIMER_SCHEDULER));
modules.put(ModuleType.RMI, new Remik());
modules.put(ModuleType.STATE, new Stanik(new PathName(ourPath), freshnessPeriod));
modules.put(ModuleType.QUERY, new Qurnik());
modules.put(ModuleType.GOSSIP, new GossipGirl());
UDUPServer server = new UDUPServer(serverAddr, port, bufsize);
modules.put(ModuleType.UDP, new UDUP(port, timeout, bufsize, server));
return modules;
}
public static HashMap<ModuleType, Executor> initializeExecutors(
HashMap<ModuleType, Module> modules) {
HashMap<ModuleType, Executor> executors = new HashMap<ModuleType, Executor>();
for (Map.Entry<ModuleType, Module> moduleEntry : modules.entrySet()) {
Module module = moduleEntry.getValue();
Executor executor = new Executor(module);
executors.put(moduleEntry.getKey(), executor);
}
return executors;
}
public static ArrayList<Thread> initializeExecutorThreads(HashMap<ModuleType, Executor> executors) {
ArrayList<Thread> executorThreads = new ArrayList<Thread>();
for (Map.Entry<ModuleType, Executor> executorEntry : executors.entrySet()) {
Thread thread = new Thread(executorEntry.getValue());
thread.setDaemon(true);
System.out.println("Initializing executor " + executorEntry.getKey());
thread.start();
executorThreads.add(thread);
}
return executorThreads;
}
public void closeExecutors(ArrayList<Thread> executorThreads) {
for (Thread executorThread : executorThreads) {
executorThread.interrupt();
}
}
public void runModulesAsThreads() {
try {
modules = initializeModules();
} catch (UnknownHostException | SocketException e) {
System.out.println("Module initialization failed");
e.printStackTrace();
return;
}
executors = initializeExecutors(modules);
ArrayList<Thread> executorThreads = initializeExecutorThreads(executors);
}
void startNonModuleThreads(EventBus eventBus) {
Thread UDUPServerThread = new Thread(((UDUP) modules.get(ModuleType.UDP)).getServer());
Thread eventBusThread = new Thread(eventBus);
System.out.println("Initializing event bus");
eventBusThread.start();
UDUPServerThread.start();
}
}
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