thoerup/circuitbreaker/AccountingCircuitBreaker.java

package dk.thoerup.curcuitbreaker;

import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;

public class AccountingCircuitBreaker extends CircuitBreaker {

        private AtomicInteger tripCount = new AtomicInteger(0); // how many times ahs the CB tripped  
        private AtomicInteger blockCount = new AtomicInteger(0); //how many times has this CB blocked a call that would otherwise go to the backend
        private AtomicInteger totalFailureCount = new AtomicInteger(0); //how many times has the backend thrown an exception
        private AtomicInteger totalCallCount = new AtomicInteger(0);
        private AtomicLong lastTrip = new AtomicLong(0);
        private long lastResetCounters = 0;
        
        public AccountingCircuitBreaker(String name, int threshold, long timeoutMS) {
                super(name, threshold, timeoutMS);

                resetCounters();
        }

        @Override
        public Object invoke(CircuitInvocation invocation) throws Exception {
                Object result;
                try {
                        totalCallCount.incrementAndGet();
                        result = super.invoke(invocation);
                } catch (Exception e) {
                        if (e instanceof CircuitBreakerException) {
                                blockCount.incrementAndGet();
                        } else {
                                totalFailureCount.incrementAndGet();
                        }
                        throw e;
                }
                
                return result;
        }

        @Override
        public void tripBreaker() {
                super.tripBreaker();
                tripCount.incrementAndGet();
                lastTrip.set( System.currentTimeMillis() );
        }
        
        public int getTripCount() {
                return tripCount.get();
        }
        
        public int getBlockCount() {
                return blockCount.get();        
        }
        
        public int getTotalFailureCount() {
                return totalFailureCount.get();
        }
        
        public long getLastResetCounters() {
                return lastResetCounters;
        }
        
        public long getLastTrip() {
                return lastTrip.get();
        }
        
        public int getTotalCallCount() {
                return totalCallCount.get();
        }
        
        public void resetCounters() {
                tripCount.set(0);
                blockCount.set(0);
                totalFailureCount.set(0);
                totalCallCount.set(0);
                lastTrip.set(0);
                
                lastResetCounters = System.currentTimeMillis();
        }
        
}
1	torben	399	package dk.thoerup.curcuitbreaker;
2
3			import java.util.concurrent.atomic.AtomicInteger;
4	torben	460	import java.util.concurrent.atomic.AtomicLong;
5	torben	399
6			public class AccountingCircuitBreaker extends CircuitBreaker {
7
8			private AtomicInteger tripCount = new AtomicInteger(0); // how many times ahs the CB tripped
9			private AtomicInteger blockCount = new AtomicInteger(0); //how many times has this CB blocked a call that would otherwise go to the backend
10	torben	403	private AtomicInteger totalFailureCount = new AtomicInteger(0); //how many times has the backend thrown an exception
11			private AtomicInteger totalCallCount = new AtomicInteger(0);
12	torben	460	private AtomicLong lastTrip = new AtomicLong(0);
13	torben	404	private long lastResetCounters = 0;
14	torben	400
15	torben	399	public AccountingCircuitBreaker(String name, int threshold, long timeoutMS) {
16			super(name, threshold, timeoutMS);
17	torben	444
18			resetCounters();
19	torben	399	}
20
21			@Override
22	torben	450	public Object invoke(CircuitInvocation invocation) throws Exception {
23	torben	399	Object result;
24			try {
25	torben	403	totalCallCount.incrementAndGet();
26	torben	399	result = super.invoke(invocation);
27	torben	450	} catch (Exception e) {
28			if (e instanceof CircuitBreakerException) {
29	torben	399	blockCount.incrementAndGet();
30			} else {
31	torben	403	totalFailureCount.incrementAndGet();
32	torben	399	}
33	torben	450	throw e;
34	torben	399	}
35
36			return result;
37			}
38
39			@Override
40			public void tripBreaker() {
41			super.tripBreaker();
42			tripCount.incrementAndGet();
43	torben	460	lastTrip.set( System.currentTimeMillis() );
44	torben	399	}
45
46			public int getTripCount() {
47			return tripCount.get();
48			}
49
50			public int getBlockCount() {
51			return blockCount.get();
52			}
53
54	torben	403	public int getTotalFailureCount() {
55			return totalFailureCount.get();
56	torben	399	}
57
58	torben	404	public long getLastResetCounters() {
59			return lastResetCounters;
60	torben	400	}
61
62	torben	460	public long getLastTrip() {
63			return lastTrip.get();
64			}
65
66	torben	403	public int getTotalCallCount() {
67			return totalCallCount.get();
68			}
69
70	torben	399	public void resetCounters() {
71			tripCount.set(0);
72			blockCount.set(0);
73	torben	403	totalFailureCount.set(0);
74			totalCallCount.set(0);
75	torben	460	lastTrip.set(0);
76	torben	400
77	torben	404	lastResetCounters = System.currentTimeMillis();
78	torben	399	}
79
80			}