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/*
* Copyright © 2017-2018 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.model;
import android.databinding.BaseObservable;
import android.databinding.Bindable;
import android.support.annotation.Nullable;
import com.wireguard.android.BR;
import com.wireguard.android.util.ExceptionLoggers;
import com.wireguard.config.Config;
import com.wireguard.util.Keyed;
import java.util.regex.Pattern;
import java9.util.concurrent.CompletableFuture;
import java9.util.concurrent.CompletionStage;
/**
* Encapsulates the volatile and nonvolatile state of a WireGuard tunnel.
*/
public class Tunnel extends BaseObservable implements Keyed<String> {
public static final int NAME_MAX_LENGTH = 15;
private static final Pattern NAME_PATTERN = Pattern.compile("[a-zA-Z0-9_=+.-]{1,15}");
private final TunnelManager manager;
@Nullable private Config config;
private String name;
private State state;
@Nullable private Statistics statistics;
Tunnel(final TunnelManager manager, final String name,
@Nullable final Config config, final State state) {
this.manager = manager;
this.name = name;
this.config = config;
this.state = state;
}
public static boolean isNameInvalid(final CharSequence name) {
return !NAME_PATTERN.matcher(name).matches();
}
public CompletionStage<Void> delete() {
return manager.delete(this);
}
@Bindable @Nullable
public Config getConfig() {
if (config == null)
manager.getTunnelConfig(this).whenComplete(ExceptionLoggers.E);
return config;
}
public CompletionStage<Config> getConfigAsync() {
if (config == null)
return manager.getTunnelConfig(this);
return CompletableFuture.completedFuture(config);
}
@Override
public String getKey() {
return name;
}
@Bindable
public String getName() {
return name;
}
@Bindable
public State getState() {
return state;
}
public CompletionStage<State> getStateAsync() {
return TunnelManager.getTunnelState(this);
}
@Bindable @Nullable
public Statistics getStatistics() {
// FIXME: Check age of statistics.
if (statistics == null)
TunnelManager.getTunnelStatistics(this).whenComplete(ExceptionLoggers.E);
return statistics;
}
public CompletionStage<Statistics> getStatisticsAsync() {
// FIXME: Check age of statistics.
if (statistics == null)
return TunnelManager.getTunnelStatistics(this);
return CompletableFuture.completedFuture(statistics);
}
Config onConfigChanged(final Config config) {
this.config = config;
notifyPropertyChanged(BR.config);
return config;
}
public String onNameChanged(final String name) {
this.name = name;
notifyPropertyChanged(BR.name);
return name;
}
State onStateChanged(final State state) {
if (state != State.UP)
onStatisticsChanged(null);
this.state = state;
notifyPropertyChanged(BR.state);
return state;
}
@Nullable
Statistics onStatisticsChanged(@Nullable final Statistics statistics) {
this.statistics = statistics;
notifyPropertyChanged(BR.statistics);
return statistics;
}
public CompletionStage<Config> setConfig(final Config config) {
if (!config.equals(this.config))
return manager.setTunnelConfig(this, config);
return CompletableFuture.completedFuture(this.config);
}
public CompletionStage<String> setName(final String name) {
if (!name.equals(this.name))
return manager.setTunnelName(this, name);
return CompletableFuture.completedFuture(this.name);
}
public CompletionStage<State> setState(final State state) {
if (state != this.state)
return manager.setTunnelState(this, state);
return CompletableFuture.completedFuture(this.state);
}
public enum State {
DOWN,
TOGGLE,
UP;
public static State of(final boolean running) {
return running ? UP : DOWN;
}
}
public static class Statistics extends BaseObservable { }
}
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