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java/org/apache/catalina/tribes/transport/SenderState.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF 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 org.apache.catalina.tribes.transport;
+
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+
+import org.apache.catalina.tribes.Member;
+
+public class SenderState {
+
+    public static final int READY = 0;
+    public static final int SUSPECT = 1;
+    public static final int FAILING = 2;
+
+    protected static final ConcurrentMap<Member, SenderState> memberStates = new ConcurrentHashMap<>();
+
+    public static SenderState getSenderState(Member member) {
+        return getSenderState(member, true);
+    }
+
+    public static SenderState getSenderState(Member member, boolean create) {
+        SenderState state = memberStates.get(member);
+        if (state == null && create) {
+            state = new SenderState();
+            SenderState current = memberStates.putIfAbsent(member, state);
+            if (current != null) {
+                state = current;
+            }
+        }
+        return state;
+    }
+
+    public static void removeSenderState(Member member) {
+        memberStates.remove(member);
+    }
+
+
+    // ----------------------------------------------------- Instance Variables
+
+    private volatile int state = READY;
+
+    //  ----------------------------------------------------- Constructor
+
+
+    private SenderState() {
+        this(READY);
+    }
+
+    private SenderState(int state) {
+        this.state = state;
+    }
+
+    /**
+     *
+     * @return boolean
+     */
+    public boolean isSuspect() {
+        return (state == SUSPECT) || (state == FAILING);
+    }
+
+    public void setSuspect() {
+        state = SUSPECT;
+    }
+
+    public boolean isReady() {
+        return state == READY;
+    }
+
+    public void setReady() {
+        state = READY;
+    }
+
+    public boolean isFailing() {
+        return state == FAILING;
+    }
+
+    public void setFailing() {
+        state = FAILING;
+    }
+
+
+    //  ----------------------------------------------------- Public Properties
+
+}