okhttp3.internal.connection.RouteDatabase Maven / Gradle / Ivy
/*
* Copyright (C) 2013 Square, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package okhttp3.internal.connection;
import java.util.LinkedHashSet;
import java.util.Set;
import okhttp3.Route;
/**
* A blacklist of failed routes to avoid when creating a new connection to a target address. This is
* used so that OkHttp can learn from its mistakes: if there was a failure attempting to connect to
* a specific IP address or proxy server, that failure is remembered and alternate routes are
* preferred.
*/
public final class RouteDatabase {
private final Set failedRoutes = new LinkedHashSet<>();
/** Records a failure connecting to {@code failedRoute}. */
public synchronized void failed(Route failedRoute) {
failedRoutes.add(failedRoute);
}
/** Records success connecting to {@code route}. */
public synchronized void connected(Route route) {
failedRoutes.remove(route);
}
/** Returns true if {@code route} has failed recently and should be avoided. */
public synchronized boolean shouldPostpone(Route route) {
return failedRoutes.contains(route);
}
}