netty5/example/src/main/java/io/netty/example/worldclock/WorldClockServerHandler.java

73 lines
2.7 KiB
Java

/*
* Copyright 2012 The Netty Project
*
* The Netty Project licenses this file to you 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 io.netty.example.worldclock;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.example.worldclock.WorldClockProtocol.Continent;
import io.netty.example.worldclock.WorldClockProtocol.DayOfWeek;
import io.netty.example.worldclock.WorldClockProtocol.LocalTime;
import io.netty.example.worldclock.WorldClockProtocol.LocalTimes;
import io.netty.example.worldclock.WorldClockProtocol.Location;
import io.netty.example.worldclock.WorldClockProtocol.Locations;
import java.util.Calendar;
import java.util.TimeZone;
import static java.util.Calendar.*;
public class WorldClockServerHandler extends SimpleChannelInboundHandler<Locations> {
@Override
public void messageReceived(ChannelHandlerContext ctx, Locations locations) throws Exception {
long currentTime = System.currentTimeMillis();
LocalTimes.Builder builder = LocalTimes.newBuilder();
for (Location l: locations.getLocationList()) {
TimeZone tz = TimeZone.getTimeZone(
toString(l.getContinent()) + '/' + l.getCity());
Calendar calendar = getInstance(tz);
calendar.setTimeInMillis(currentTime);
builder.addLocalTime(LocalTime.newBuilder().
setYear(calendar.get(YEAR)).
setMonth(calendar.get(MONTH) + 1).
setDayOfMonth(calendar.get(DAY_OF_MONTH)).
setDayOfWeek(DayOfWeek.valueOf(calendar.get(DAY_OF_WEEK))).
setHour(calendar.get(HOUR_OF_DAY)).
setMinute(calendar.get(MINUTE)).
setSecond(calendar.get(SECOND)).build());
}
ctx.write(builder.build());
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) {
ctx.flush();
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
cause.printStackTrace();
ctx.close();
}
private static String toString(Continent c) {
return c.name().charAt(0) + c.name().toLowerCase().substring(1);
}
}