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20 package org.apache.mina.core.filterchain;
21
22 import org.apache.mina.core.filterchain.IoFilter.NextFilter;
23 import org.apache.mina.core.session.IdleStatus;
24 import org.apache.mina.core.session.IoEvent;
25 import org.apache.mina.core.session.IoEventType;
26 import org.apache.mina.core.session.IoSession;
27 import org.apache.mina.core.write.WriteRequest;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
30
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38 public class IoFilterEvent extends IoEvent {
39
40 static Logger LOGGER = LoggerFactory.getLogger(IoFilterEvent.class);
41
42
43 static boolean DEBUG = LOGGER.isDebugEnabled();
44
45 private final NextFilter nextFilter;
46
47 public IoFilterEvent(NextFilter nextFilter, IoEventType type, IoSession session, Object parameter) {
48 super(type, session, parameter);
49
50 if (nextFilter == null) {
51 throw new IllegalArgumentException("nextFilter must not be null");
52 }
53
54 this.nextFilter = nextFilter;
55 }
56
57 public NextFilter getNextFilter() {
58 return nextFilter;
59 }
60
61 @Override
62 public void fire() {
63 IoSession session = getSession();
64 NextFilter nextFilter = getNextFilter();
65 IoEventType type = getType();
66
67 if (DEBUG) {
68 LOGGER.debug("Firing a {} event for session {}", type, session.getId());
69 }
70
71 switch (type) {
72 case MESSAGE_RECEIVED:
73 Object parameter = getParameter();
74 nextFilter.messageReceived(session, parameter);
75 break;
76
77 case MESSAGE_SENT:
78 WriteRequest writeRequest = (WriteRequest) getParameter();
79 nextFilter.messageSent(session, writeRequest);
80 break;
81
82 case WRITE:
83 writeRequest = (WriteRequest) getParameter();
84 nextFilter.filterWrite(session, writeRequest);
85 break;
86
87 case CLOSE:
88 nextFilter.filterClose(session);
89 break;
90
91 case EXCEPTION_CAUGHT:
92 Throwable throwable = (Throwable) getParameter();
93 nextFilter.exceptionCaught(session, throwable);
94 break;
95
96 case SESSION_IDLE:
97 nextFilter.sessionIdle(session, (IdleStatus) getParameter());
98 break;
99
100 case SESSION_OPENED:
101 nextFilter.sessionOpened(session);
102 break;
103
104 case SESSION_CREATED:
105 nextFilter.sessionCreated(session);
106 break;
107
108 case SESSION_CLOSED:
109 nextFilter.sessionClosed(session);
110 break;
111
112 default:
113 throw new IllegalArgumentException("Unknown event type: " + type);
114 }
115
116 if (DEBUG) {
117 LOGGER.debug("Event {} has been fired for session {}", type, session.getId());
118 }
119 }
120 }