1.0

旧的java项目/itcast/server/session/SessionMemoryImpl.java

@@ -0,0 +1,47 @@
+package cn.itcast.server.session;
+
+import io.netty.channel.Channel;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class SessionMemoryImpl implements Session {
+
+    private final Map<String, Channel> usernameChannelMap = new ConcurrentHashMap<>();
+    private final Map<Channel, String> channelUsernameMap = new ConcurrentHashMap<>();
+    private final Map<Channel,Map<String,Object>> channelAttributesMap = new ConcurrentHashMap<>();
+
+    @Override
+    public void bind(Channel channel, String username) {
+        usernameChannelMap.put(username, channel);
+        channelUsernameMap.put(channel, username);
+        channelAttributesMap.put(channel, new ConcurrentHashMap<>());
+    }
+
+    @Override
+    public void unbind(Channel channel) {
+        String username = channelUsernameMap.remove(channel);
+        usernameChannelMap.remove(username);
+        channelAttributesMap.remove(channel);
+    }
+
+    @Override
+    public Object getAttribute(Channel channel, String name) {
+        return channelAttributesMap.get(channel).get(name);
+    }
+
+    @Override
+    public void setAttribute(Channel channel, String name, Object value) {
+        channelAttributesMap.get(channel).put(name, value);
+    }
+
+    @Override
+    public Channel getChannel(String username) {
+        return usernameChannelMap.get(username);
+    }
+
+    @Override
+    public String toString() {
+        return usernameChannelMap.toString();
+    }
+}