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ProfileFetchThread.java
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ProfileFetchThread.java
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package net.citizensnpcs.npc.profile;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Deque;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.annotation.Nullable;
import org.bukkit.Bukkit;
import com.google.common.base.Preconditions;
import com.google.common.base.Throwables;
import com.mojang.authlib.Agent;
import com.mojang.authlib.GameProfile;
import com.mojang.authlib.GameProfileRepository;
import com.mojang.authlib.ProfileLookupCallback;
import net.citizensnpcs.api.CitizensAPI;
import net.citizensnpcs.api.util.Messaging;
import net.citizensnpcs.util.NMS;
/**
* Thread used to fetch profiles from the Mojang servers.
*
* <p>
* Maintains a cache of profiles so that no profile is ever requested more than once during a single server session.
* </p>
*
* @see ProfileFetcher
*/
class ProfileFetchThread implements Runnable {
private final Deque<ProfileRequest> queue = new ArrayDeque<ProfileRequest>();
private final Map<String, ProfileRequest> requested = new HashMap<String, ProfileRequest>(40);
private final Object sync = new Object(); // sync for queue & requested fields
ProfileFetchThread() {
}
/**
* Fetch a profile.
*
* @param name
* The name of the player the profile belongs to.
* @param handler
* Optional handler to handle result fetch result. Handler always invoked from the main thread.
*
* @see ProfileFetcher#fetch
*/
void fetch(String name, @Nullable ProfileFetchHandler handler) {
Preconditions.checkNotNull(name);
name = name.toLowerCase();
ProfileRequest request;
synchronized (sync) {
request = requested.get(name);
if (request == null) {
request = new ProfileRequest(name, handler);
queue.add(request);
requested.put(name, request);
return;
} else if (request.getResult() == ProfileFetchResult.TOO_MANY_REQUESTS) {
queue.add(request);
}
}
if (handler != null) {
if (request.getResult() == ProfileFetchResult.PENDING
|| request.getResult() == ProfileFetchResult.TOO_MANY_REQUESTS) {
addHandler(request, handler);
} else {
sendResult(handler, request);
}
}
}
public void fetchForced(String name, ProfileFetchHandler handler) {
Preconditions.checkNotNull(name);
name = name.toLowerCase();
ProfileRequest request;
synchronized (sync) {
request = requested.get(name);
if (request != null) {
if (request.getResult() == ProfileFetchResult.TOO_MANY_REQUESTS) {
queue.add(request);
} else {
requested.remove(name);
queue.remove(request);
request = null;
}
}
if (request == null) {
request = new ProfileRequest(name, handler);
queue.add(request);
requested.put(name, request);
return;
}
}
if (handler != null) {
if (request.getResult() == ProfileFetchResult.PENDING
|| request.getResult() == ProfileFetchResult.TOO_MANY_REQUESTS) {
addHandler(request, handler);
} else {
sendResult(handler, request);
}
}
}
/**
* Fetch one or more profiles.
*
* @param requests
* The profile requests.
*/
private void fetchRequests(final Collection<ProfileRequest> requests) {
Preconditions.checkNotNull(requests);
final GameProfileRepository repo = NMS.getGameProfileRepository();
String[] playerNames = new String[requests.size()];
int i = 0;
for (ProfileRequest request : requests) {
playerNames[i++] = request.getPlayerName();
}
repo.findProfilesByNames(playerNames, Agent.MINECRAFT, new ProfileLookupCallback() {
@Override
public void onProfileLookupFailed(GameProfile profile, Exception e) {
if (Messaging.isDebugging()) {
Messaging.debug(
"Profile lookup for player '" + profile.getName() + "' failed2: " + getExceptionMsg(e));
Messaging.debug(Throwables.getStackTraceAsString(e));
}
ProfileRequest request = findRequest(profile.getName(), requests);
if (request == null)
return;
if (isProfileNotFound(e)) {
request.setResult(null, ProfileFetchResult.NOT_FOUND);
} else if (isTooManyRequests(e)) {
request.setResult(null, ProfileFetchResult.TOO_MANY_REQUESTS);
} else {
request.setResult(null, ProfileFetchResult.FAILED);
}
}
@Override
public void onProfileLookupSucceeded(final GameProfile profile) {
if (Messaging.isDebugging()) {
Messaging.debug("Fetched profile " + profile.getId() + " for player " + profile.getName());
}
ProfileRequest request = findRequest(profile.getName(), requests);
if (request == null)
return;
try {
request.setResult(NMS.fillProfileProperties(profile, true), ProfileFetchResult.SUCCESS);
} catch (Throwable e) {
if (Messaging.isDebugging()) {
Messaging.debug("Profile lookup for player '" + profile.getName() + "' failed: "
+ getExceptionMsg(e) + " " + isTooManyRequests(e));
Messaging.debug(Throwables.getStackTraceAsString(e));
}
if (isTooManyRequests(e)) {
request.setResult(null, ProfileFetchResult.TOO_MANY_REQUESTS);
} else {
request.setResult(null, ProfileFetchResult.FAILED);
}
}
}
});
}
@Override
public void run() {
List<ProfileRequest> requests;
synchronized (sync) {
if (queue.isEmpty())
return;
requests = new ArrayList<ProfileRequest>(queue);
queue.clear();
}
fetchRequests(requests);
}
private static void addHandler(final ProfileRequest request, final ProfileFetchHandler handler) {
Bukkit.getScheduler().scheduleSyncDelayedTask(CitizensAPI.getPlugin(), new Runnable() {
@Override
public void run() {
request.addHandler(handler);
}
}, 1);
}
@Nullable
private static ProfileRequest findRequest(String name, Collection<ProfileRequest> requests) {
name = name.toLowerCase();
for (ProfileRequest request : requests) {
if (request.getPlayerName().equals(name)) {
return request;
}
}
return null;
}
private static String getExceptionMsg(Throwable e) {
return Throwables.getRootCause(e).getMessage();
}
private static boolean isProfileNotFound(Exception e) {
String message = e.getMessage();
String cause = e.getCause() != null ? e.getCause().getMessage() : null;
return (message != null && message.contains("did not find"))
|| (cause != null && cause.contains("did not find"));
}
private static boolean isTooManyRequests(Throwable e) {
String message = e.getMessage();
String cause = e.getCause() != null ? e.getCause().getMessage() : null;
return (message != null && message.contains("too many requests"))
|| (cause != null && cause.contains("too many requests"));
}
private static void sendResult(final ProfileFetchHandler handler, final ProfileRequest request) {
Bukkit.getScheduler().scheduleSyncDelayedTask(CitizensAPI.getPlugin(), new Runnable() {
@Override
public void run() {
handler.onResult(request);
}
}, 1);
}
}