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//========================================================================
//Copyright 2011-2012 Mort Bay Consulting Pty. Ltd.
//------------------------------------------------------------------------
//All rights reserved. This program and the accompanying materials
//are made available under the terms of the Eclipse Public License v1.0
//and Apache License v2.0 which accompanies this distribution.
//The Eclipse Public License is available at
//http://www.eclipse.org/legal/epl-v10.html
//The Apache License v2.0 is available at
//http://www.opensource.org/licenses/apache2.0.php
//You may elect to redistribute this code under either of these licenses.
//========================================================================
package org.eclipse.jetty.spdy.api;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
public class Settings implements Iterable<Settings.Setting>
{
private Map<ID, Settings.Setting> settings = new HashMap<>();
public Settings()
{
}
public Settings(Settings original, boolean immutable)
{
Map<ID, Settings.Setting> copy = new HashMap<>(original.size());
copy.putAll(original.settings);
settings = immutable ? Collections.unmodifiableMap(copy) : copy;
}
public Setting get(ID id)
{
return settings.get(id);
}
public void put(Setting setting)
{
settings.put(setting.id(), setting);
}
public Setting remove(ID id)
{
return settings.remove(id);
}
public int size()
{
return settings.size();
}
public void clear()
{
settings.clear();
}
@Override
public boolean equals(Object obj)
{
if (this == obj)
return true;
if (obj == null || getClass() != obj.getClass())
return false;
Settings that = (Settings)obj;
return settings.equals(that.settings);
}
@Override
public int hashCode()
{
return settings.hashCode();
}
@Override
public Iterator<Setting> iterator()
{
return settings.values().iterator();
}
@Override
public String toString()
{
return settings.toString();
}
public static final class ID
{
public static ID UPLOAD_BANDWIDTH = new ID(1);
public static ID DOWNLOAD_BANDWIDTH = new ID(2);
public static ID ROUND_TRIP_TIME = new ID(3);
public static ID MAX_CONCURRENT_STREAMS = new ID(4);
public static ID CURRENT_CONGESTION_WINDOW = new ID(5);
public static ID DOWNLOAD_RETRANSMISSION_RATE = new ID(6);
public static ID INITIAL_WINDOW_SIZE = new ID(7);
public synchronized static ID from(int code)
{
ID id = Codes.codes.get(code);
if (id == null)
id = new ID(code);
return id;
}
private final int code;
private ID(int code)
{
this.code = code;
Codes.codes.put(code, this);
}
public int code()
{
return code;
}
@Override
public String toString()
{
return String.valueOf(code);
}
private static class Codes
{
private static final Map<Integer, ID> codes = new HashMap<>();
}
}
public static enum Flag
{
NONE((byte)0),
PERSIST((byte)1),
PERSISTED((byte)2);
public static Flag from(byte code)
{
return Codes.codes.get(code);
}
private final byte code;
private Flag(byte code)
{
this.code = code;
Codes.codes.put(code, this);
}
public byte code()
{
return code;
}
private static class Codes
{
private static final Map<Byte, Flag> codes = new HashMap<>();
}
}
public static class Setting
{
private final ID id;
private final Flag flag;
private final int value;
public Setting(ID id, int value)
{
this(id, Flag.NONE, value);
}
public Setting(ID id, Flag flag, int value)
{
this.id = id;
this.flag = flag;
this.value = value;
}
public ID id()
{
return id;
}
public Flag flag()
{
return flag;
}
public int value()
{
return value;
}
@Override
public boolean equals(Object obj)
{
if (this == obj)
return true;
if (obj == null || getClass() != obj.getClass())
return false;
Setting that = (Setting)obj;
return value == that.value && flag == that.flag && id == that.id;
}
@Override
public int hashCode()
{
int result = id.hashCode();
result = 31 * result + flag.hashCode();
result = 31 * result + value;
return result;
}
@Override
public String toString()
{
return String.format("[id=%s,flags=%s:value=%d]", id(), flag(), value());
}
}
}
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