thoerup/circuitbreaker/AccountingCircuitBreaker.java

package dk.thoerup.circuitbreaker;

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 retripCount = new AtomicInteger(0);   
        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 AtomicLong lastRetrip = new AtomicLong(0);
        private AtomicLong lastFailure = new AtomicLong(0);
        private AtomicLong lastReset = new AtomicLong(0);
        
        private long lastResetCounters = 0;
        
        public AccountingCircuitBreaker(String name, int threshold, int 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();
                                lastFailure.set( System.currentTimeMillis() );
                        }
                        throw e;
                }
                
                return result;
        }

        @Override
        public void tripBreaker() {
                super.tripBreaker();
                tripCount.incrementAndGet();
                lastTrip.set( System.currentTimeMillis() );
        }
        
        @Override
        public void retripBreaker() {
                super.retripBreaker();
                retripCount.incrementAndGet();
                lastRetrip.set( System.currentTimeMillis() );
        }
        
        
        @Override
        public void reset() {
                super.reset();
                lastReset.set( System.currentTimeMillis());
        }

        public int getTripCount() {
                return tripCount.get();
        }
        
        public int getRetripCount() {
                return retripCount.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 long getLastRetrip() {
                return lastRetrip.get();
        }

        public long getLastFailure() {
                return lastFailure.get();
        }
        
        public long getLastReset() {
                return lastReset.get();
        }
        
        public int getTotalCallCount() {
                return totalCallCount.get();
        }
        
        public void resetCounters() {
                tripCount.set(0);
                retripCount.set(0);
                blockCount.set(0);
                totalFailureCount.set(0);
                totalCallCount.set(0);
                lastTrip.set(0);
                lastRetrip.set(0);
                lastReset.set(0);
                lastFailure.set(0);
                
                lastResetCounters = System.currentTimeMillis();
        }
        
}
1	torben	467	package dk.thoerup.circuitbreaker;
2	torben	399
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	torben	864	private AtomicInteger retripCount = new AtomicInteger(0);
10	torben	399	private AtomicInteger blockCount = new AtomicInteger(0); //how many times has this CB blocked a call that would otherwise go to the backend
11	torben	403	private AtomicInteger totalFailureCount = new AtomicInteger(0); //how many times has the backend thrown an exception
12			private AtomicInteger totalCallCount = new AtomicInteger(0);
13	torben	624
14	torben	460	private AtomicLong lastTrip = new AtomicLong(0);
15	torben	864	private AtomicLong lastRetrip = new AtomicLong(0);
16	torben	621	private AtomicLong lastFailure = new AtomicLong(0);
17	torben	624	private AtomicLong lastReset = new AtomicLong(0);
18
19	torben	404	private long lastResetCounters = 0;
20	torben	400
21	torben	1306	public AccountingCircuitBreaker(String name, int threshold, int timeoutMS) {
22	torben	399	super(name, threshold, timeoutMS);
23	torben	444
24			resetCounters();
25	torben	399	}
26
27			@Override
28	torben	450	public Object invoke(CircuitInvocation invocation) throws Exception {
29	torben	399	Object result;
30			try {
31	torben	403	totalCallCount.incrementAndGet();
32	torben	399	result = super.invoke(invocation);
33	torben	450	} catch (Exception e) {
34			if (e instanceof CircuitBreakerException) {
35	torben	399	blockCount.incrementAndGet();
36			} else {
37	torben	403	totalFailureCount.incrementAndGet();
38	torben	621	lastFailure.set( System.currentTimeMillis() );
39	torben	399	}
40	torben	450	throw e;
41	torben	399	}
42
43			return result;
44			}
45
46			@Override
47			public void tripBreaker() {
48			super.tripBreaker();
49			tripCount.incrementAndGet();
50	torben	460	lastTrip.set( System.currentTimeMillis() );
51	torben	399	}
52
53	torben	864	@Override
54			public void retripBreaker() {
55			super.retripBreaker();
56			retripCount.incrementAndGet();
57			lastRetrip.set( System.currentTimeMillis() );
58			}
59	torben	624
60
61			@Override
62			public void reset() {
63			super.reset();
64			lastReset.set( System.currentTimeMillis());
65			}
66
67	torben	399	public int getTripCount() {
68			return tripCount.get();
69			}
70
71	torben	864	public int getRetripCount() {
72			return retripCount.get();
73			}
74
75	torben	399	public int getBlockCount() {
76			return blockCount.get();
77			}
78
79	torben	403	public int getTotalFailureCount() {
80			return totalFailureCount.get();
81	torben	399	}
82
83	torben	404	public long getLastResetCounters() {
84			return lastResetCounters;
85	torben	400	}
86
87	torben	460	public long getLastTrip() {
88			return lastTrip.get();
89			}
90
91	torben	864	public long getLastRetrip() {
92			return lastRetrip.get();
93			}
94
95	torben	621	public long getLastFailure() {
96			return lastFailure.get();
97			}
98
99	torben	624	public long getLastReset() {
100			return lastReset.get();
101			}
102
103	torben	403	public int getTotalCallCount() {
104			return totalCallCount.get();
105			}
106
107	torben	399	public void resetCounters() {
108			tripCount.set(0);
109	torben	864	retripCount.set(0);
110	torben	399	blockCount.set(0);
111	torben	403	totalFailureCount.set(0);
112			totalCallCount.set(0);
113	torben	460	lastTrip.set(0);
114	torben	864	lastRetrip.set(0);
115	torben	624	lastReset.set(0);
116	torben	621	lastFailure.set(0);
117	torben	400
118	torben	404	lastResetCounters = System.currentTimeMillis();
119	torben	399	}
120
121			}