Mercurial Hosting > luan
annotate src/goodjava/webserver/handlers/DomainHandler.java @ 1435:3aae37efbf40
minor
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Mon, 06 Jan 2020 17:47:10 -0700 |
| parents | 546edc2df02c |
| children | 42c07ecb0ddc |
| rev | line source |
|---|---|
|
1402
27efb1fcbcb5
move luan.lib to goodjava
Franklin Schmidt <fschmidt@gmail.com>
parents:
1401
diff
changeset
|
1 package goodjava.webserver.handlers; |
| 1315 | 2 |
| 3 import java.io.Closeable; | |
| 4 import java.io.IOException; | |
| 5 import java.lang.ref.Reference; | |
| 1401 | 6 //import java.lang.ref.WeakReference; |
| 1315 | 7 import java.lang.ref.SoftReference; |
| 8 import java.lang.ref.ReferenceQueue; | |
| 9 import java.util.Map; | |
| 10 import java.util.HashMap; | |
|
1402
27efb1fcbcb5
move luan.lib to goodjava
Franklin Schmidt <fschmidt@gmail.com>
parents:
1401
diff
changeset
|
11 import goodjava.logging.Logger; |
|
27efb1fcbcb5
move luan.lib to goodjava
Franklin Schmidt <fschmidt@gmail.com>
parents:
1401
diff
changeset
|
12 import goodjava.logging.LoggerFactory; |
|
27efb1fcbcb5
move luan.lib to goodjava
Franklin Schmidt <fschmidt@gmail.com>
parents:
1401
diff
changeset
|
13 import goodjava.webserver.Handler; |
|
27efb1fcbcb5
move luan.lib to goodjava
Franklin Schmidt <fschmidt@gmail.com>
parents:
1401
diff
changeset
|
14 import goodjava.webserver.Request; |
|
27efb1fcbcb5
move luan.lib to goodjava
Franklin Schmidt <fschmidt@gmail.com>
parents:
1401
diff
changeset
|
15 import goodjava.webserver.Response; |
| 1315 | 16 |
| 17 | |
| 18 public final class DomainHandler implements Handler { | |
| 19 private static final Logger logger = LoggerFactory.getLogger(DomainHandler.class); | |
| 20 | |
| 21 public interface Factory { | |
| 22 public Handler newHandler(String domain); | |
| 23 } | |
| 24 | |
| 25 private static void close(Handler handler) { | |
| 26 if( handler instanceof Closeable ) { | |
| 27 try { | |
| 28 ((Closeable)handler).close(); | |
| 29 } catch(IOException e) { | |
| 30 logger.error(handler.toString(),e); | |
| 31 } | |
| 32 } | |
| 33 } | |
| 34 | |
| 1401 | 35 private final Map<String,Reference<Handler>> map = new HashMap<String,Reference<Handler>>(); |
| 1315 | 36 |
| 37 private final Factory factory; | |
| 38 | |
| 39 public DomainHandler(Factory factory) { | |
| 40 this.factory = factory; | |
| 41 } | |
| 42 | |
| 43 public Response handle(Request request) { | |
| 44 String host = (String)request.headers.get("host"); | |
| 1331 | 45 if( host == null ) |
| 46 return null; | |
| 1315 | 47 int i = host.indexOf(':'); |
| 48 String domain = i == -1 ? host : host.substring(0,i); | |
| 49 Handler handler = getHandler(domain); | |
| 50 return handler==null ? null : handler.handle(request); | |
| 51 } | |
| 52 | |
| 53 public Handler getHandler(String domain) { | |
| 1401 | 54 domain = domain.toLowerCase(); |
| 55 synchronized(map) { | |
| 56 Reference<Handler> ref = map.get(domain); | |
| 57 Handler handler = ref==null ? null : ref.get(); | |
| 58 if( handler == null ) { | |
| 59 //if(ref!=null) logger.info("gc "+domain); | |
| 60 handler = factory.newHandler(domain); | |
| 61 if( handler == null ) | |
| 62 return null; | |
| 63 map.put(domain,new SoftReference<Handler>(handler)); | |
| 64 } | |
| 65 return handler; | |
| 66 } | |
| 1315 | 67 } |
| 68 | |
| 69 public void removeHandler(String domain) { | |
| 1405 | 70 //logger.info("removeHandler "+domain); |
| 1315 | 71 domain = domain.toLowerCase(); |
| 72 synchronized(map) { | |
| 1401 | 73 Reference<Handler> ref = map.remove(domain); |
| 74 Handler handler = ref==null ? null : ref.get(); | |
| 75 if( handler != null ) { | |
| 76 close(handler); | |
| 1315 | 77 } |
| 78 } | |
| 79 } | |
| 80 | |
| 81 } |