thoerup/circuitbreaker/AccountingCircuitBreaker.java

package dk.thoerup.circuitbreaker;

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

import dk.thoerup.circuitbreaker.config.BreakerConfig;

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, BreakerConfig config) {
                super(name, config);

                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	package dk.thoerup.circuitbreaker;
2
3	import java.util.concurrent.atomic.AtomicInteger;
4	import java.util.concurrent.atomic.AtomicLong;
5
6	import dk.thoerup.circuitbreaker.config.BreakerConfig;
7
8	public class AccountingCircuitBreaker extends CircuitBreaker {
9
10	private AtomicInteger tripCount = new AtomicInteger(0); // how many times ahs the CB tripped
11	private AtomicInteger retripCount = new AtomicInteger(0);
12	private AtomicInteger blockCount = new AtomicInteger(0); //how many times has this CB blocked a call that would otherwise go to the backend
13	private AtomicInteger totalFailureCount = new AtomicInteger(0); //how many times has the backend thrown an exception
14	private AtomicInteger totalCallCount = new AtomicInteger(0);
15
16	private AtomicLong lastTrip = new AtomicLong(0);
17	private AtomicLong lastRetrip = new AtomicLong(0);
18	private AtomicLong lastFailure = new AtomicLong(0);
19	private AtomicLong lastReset = new AtomicLong(0);
20
21	private long lastResetCounters = 0;
22
23	public AccountingCircuitBreaker(String name, BreakerConfig config) {
24	super(name, config);
25
26	resetCounters();
27	}
28
29	@Override
30	public Object invoke(CircuitInvocation invocation) throws Exception {
31	Object result;
32	try {
33	totalCallCount.incrementAndGet();
34	result = super.invoke(invocation);
35	} catch (Exception e) {
36	if (e instanceof CircuitBreakerException) {
37	blockCount.incrementAndGet();
38	} else {
39	totalFailureCount.incrementAndGet();
40	lastFailure.set( System.currentTimeMillis() );
41	}
42	throw e;
43	}
44
45	return result;
46	}
47
48	@Override
49	public void tripBreaker() {
50	super.tripBreaker();
51	tripCount.incrementAndGet();
52	lastTrip.set( System.currentTimeMillis() );
53	}
54
55	@Override
56	public void retripBreaker() {
57	super.retripBreaker();
58	retripCount.incrementAndGet();
59	lastRetrip.set( System.currentTimeMillis() );
60	}
61
62
63	@Override
64	public void reset() {
65	super.reset();
66	lastReset.set( System.currentTimeMillis());
67	}
68
69	public int getTripCount() {
70	return tripCount.get();
71	}
72
73	public int getRetripCount() {
74	return retripCount.get();
75	}
76
77	public int getBlockCount() {
78	return blockCount.get();
79	}
80
81	public int getTotalFailureCount() {
82	return totalFailureCount.get();
83	}
84
85	public long getLastResetCounters() {
86	return lastResetCounters;
87	}
88
89	public long getLastTrip() {
90	return lastTrip.get();
91	}
92
93	public long getLastRetrip() {
94	return lastRetrip.get();
95	}
96
97	public long getLastFailure() {
98	return lastFailure.get();
99	}
100
101	public long getLastReset() {
102	return lastReset.get();
103	}
104
105	public int getTotalCallCount() {
106	return totalCallCount.get();
107	}
108
109	public void resetCounters() {
110	tripCount.set(0);
111	retripCount.set(0);
112	blockCount.set(0);
113	totalFailureCount.set(0);
114	totalCallCount.set(0);
115	lastTrip.set(0);
116	lastRetrip.set(0);
117	lastReset.set(0);
118	lastFailure.set(0);
119
120	lastResetCounters = System.currentTimeMillis();
121	}
122
123	}