Repository navigation
Expand file tree
/
Copy pathMeteredInvocationHandleFactory.java
More file actions
102 lines (86 loc) · 3.26 KB
/
Copy pathMeteredInvocationHandleFactory.java
File metadata and controls
102 lines (86 loc) · 3.26 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
/**
* Copyright 2012-2020 The Feign Authors
*
* Licensed 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 feign.micrometer;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import feign.Feign;
import feign.FeignException;
import feign.InvocationHandlerFactory;
import feign.Target;
import feign.Util;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.Tag;
/**
* Warp feign {@link InvocationHandler} with metrics.
*/
public class MeteredInvocationHandleFactory implements InvocationHandlerFactory {
/**
* Methods that are declared by super class object and, if invoked, we don't wanna record metrics
* for
*/
private static final List<String> JAVA_OBJECT_METHODS =
Arrays.asList("equals", "toString", "hashCode");
private final InvocationHandlerFactory invocationHandler;
private final MeterRegistry meterRegistry;
private final FeignMetricName metricName;
public MeteredInvocationHandleFactory(InvocationHandlerFactory invocationHandler,
MeterRegistry meterRegistry) {
this.invocationHandler = invocationHandler;
this.meterRegistry = meterRegistry;
this.metricName = new FeignMetricName(Feign.class);
}
@Override
public InvocationHandler create(Target target, Map<Method, MethodHandler> dispatch) {
final Class clientClass = target.type();
final InvocationHandler invocationHandle = invocationHandler.create(target, dispatch);
return (proxy, method, args) -> {
if (JAVA_OBJECT_METHODS.contains(method.getName())
|| Util.isDefault(method)) {
return invocationHandle.invoke(proxy, method, args);
}
try {
return meterRegistry.timer(
metricName.name(),
metricName.tag(clientClass, method, target.url()))
.recordCallable(() -> {
try {
return invocationHandle.invoke(proxy, method, args);
} catch (Exception e) {
throw e;
} catch (Throwable e) {
throw new Exception(e);
}
});
} catch (final FeignException e) {
meterRegistry.counter(
metricName.name("http_error"),
metricName.tag(clientClass, method, target.url(),
Tag.of("http_status", String.valueOf(e.status())),
Tag.of("error_group", e.status() / 100 + "xx")))
.increment();
throw e;
} catch (final Throwable e) {
meterRegistry.counter(
metricName.name("exception"),
metricName.tag(clientClass, method, target.url(),
Tag.of("exception_name", e.getClass().getSimpleName())))
.increment();
throw e;
}
};
}
}