-
Notifications
You must be signed in to change notification settings - Fork 569
/
NettyRoutingFilterInterceptor.java
85 lines (72 loc) · 3.88 KB
/
NettyRoutingFilterInterceptor.java
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
/*
* 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.skywalking.apm.plugin.spring.cloud.gateway.v21x;
import java.lang.reflect.Method;
import org.apache.skywalking.apm.agent.core.context.ContextManager;
import org.apache.skywalking.apm.agent.core.context.ContextSnapshot;
import org.apache.skywalking.apm.agent.core.context.trace.AbstractSpan;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.EnhancedInstance;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstanceMethodsAroundInterceptor;
import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.MethodInterceptResult;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.server.ServerWebExchangeDecorator;
import org.springframework.web.server.adapter.DefaultServerWebExchange;
import static org.apache.skywalking.apm.network.trace.component.ComponentsDefine.SPRING_CLOUD_GATEWAY;
public class NettyRoutingFilterInterceptor implements InstanceMethodsAroundInterceptor {
private static final String NETTY_ROUTING_FILTER_TRACED_ATTR = NettyRoutingFilterInterceptor.class.getName() + ".isTraced";
@Override
public void beforeMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes,
MethodInterceptResult result) throws Throwable {
ServerWebExchange exchange = (ServerWebExchange) allArguments[0];
if (isTraced(exchange)) {
return;
}
setTracedStatus(exchange);
EnhancedInstance enhancedInstance = getInstance(exchange);
AbstractSpan span = ContextManager.createLocalSpan("SpringCloudGateway/RoutingFilter");
if (enhancedInstance != null && enhancedInstance.getSkyWalkingDynamicField() != null) {
ContextManager.continued((ContextSnapshot) enhancedInstance.getSkyWalkingDynamicField());
}
span.setComponent(SPRING_CLOUD_GATEWAY);
}
private static void setTracedStatus(ServerWebExchange exchange) {
exchange.getAttributes().put(NETTY_ROUTING_FILTER_TRACED_ATTR, true);
}
private static boolean isTraced(ServerWebExchange exchange) {
return exchange.getAttributeOrDefault(NETTY_ROUTING_FILTER_TRACED_ATTR, false);
}
public static EnhancedInstance getInstance(Object o) {
EnhancedInstance instance = null;
if (o instanceof DefaultServerWebExchange) {
instance = (EnhancedInstance) o;
} else if (o instanceof ServerWebExchangeDecorator) {
ServerWebExchange delegate = ((ServerWebExchangeDecorator) o).getDelegate();
return getInstance(delegate);
}
return instance;
}
@Override
public Object afterMethod(EnhancedInstance objInst, Method method, Object[] allArguments, Class<?>[] argumentsTypes,
Object ret) throws Throwable {
return ret;
}
@Override
public void handleMethodException(EnhancedInstance objInst, Method method, Object[] allArguments,
Class<?>[] argumentsTypes, Throwable t) {
ContextManager.activeSpan().log(t);
}
}