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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| objName=test-case-scouter |
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108 changes: 108 additions & 0 deletions
108
scouter.agent.java/src/main/java/scouter/agent/asm/ApiCallResponseObjectASM.java
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| /* | ||
| * Copyright 2015 the original author or authors. | ||
| * @https://github.com/scouter-project/scouter | ||
| * | ||
| * 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 scouter.agent.asm; | ||
|
|
||
| import scouter.agent.ClassDesc; | ||
| import scouter.agent.Configure; | ||
| import scouter.agent.trace.TraceApiCall; | ||
| import scouter.org.objectweb.asm.ClassVisitor; | ||
| import scouter.org.objectweb.asm.Label; | ||
| import scouter.org.objectweb.asm.MethodVisitor; | ||
| import scouter.org.objectweb.asm.Opcodes; | ||
| import scouter.org.objectweb.asm.Type; | ||
| import scouter.org.objectweb.asm.commons.LocalVariablesSorter; | ||
|
|
||
| import java.util.HashSet; | ||
| import java.util.Set; | ||
|
|
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| /** | ||
| * @author Gun Lee ([email protected]) on 2018. 3. 20. | ||
| */ | ||
| public class ApiCallResponseObjectASM implements IASM, Opcodes { | ||
| private Configure conf = Configure.getInstance(); | ||
|
|
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| private static Set<String> hookingClasses = new HashSet<String>(); | ||
| static { | ||
| hookingClasses.add("org/apache/http/impl/execchain/HttpResponseProxy"); | ||
| hookingClasses.add("org/apache/http/impl/client/CloseableHttpResponseProxy"); | ||
| } | ||
| public ClassVisitor transform(ClassVisitor cv, String className, ClassDesc classDesc) { | ||
| if (conf._hook_apicall_enabled == false) | ||
| return cv; | ||
|
|
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| if (hookingClasses.contains(className)) { | ||
| return new ApiCallResponseObjectCV(cv, className); | ||
| } | ||
|
|
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| return cv; | ||
| } | ||
| } | ||
|
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| class ApiCallResponseObjectCV extends ClassVisitor implements Opcodes { | ||
| String className; | ||
|
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| public ApiCallResponseObjectCV(ClassVisitor cv, String className) { | ||
| super(ASM5, cv); | ||
| this.className = className; | ||
| } | ||
|
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| @Override | ||
| public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) { | ||
| MethodVisitor mv = super.visitMethod(access, name, desc, signature, exceptions); | ||
| if (mv == null) { | ||
| return null; | ||
| } | ||
| if ("<init>".equals(name) && desc.startsWith("(Lorg/apache/http/HttpResponse;")) { | ||
| return new ApiCallResponseObjectInitMV(className, access, name, desc, mv); | ||
| } | ||
|
|
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| return mv; | ||
| } | ||
| } | ||
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| class ApiCallResponseObjectInitMV extends LocalVariablesSorter implements Opcodes { | ||
| private static final String TRACE = TraceApiCall.class.getName().replace('.', '/'); | ||
| private static final String END_METHOD = "setCalleeToCtxInHttpClientResponse"; | ||
| private static final String END_SIGNATURE = "(Ljava/lang/Object;Ljava/lang/Object;)V"; | ||
|
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| private String className; | ||
| private String name; | ||
| private String desc; | ||
| private int statIdx; | ||
| private Type returnType; | ||
| private Label startFinally = new Label(); | ||
|
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| public ApiCallResponseObjectInitMV(String className, int access, String name, String desc, MethodVisitor mv) { | ||
| super(ASM5, access, desc, mv); | ||
| this.className = className; | ||
| this.name = name; | ||
| this.desc = desc; | ||
| this.returnType = Type.getReturnType(desc); | ||
| } | ||
|
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| @Override | ||
| public void visitInsn(int opcode) { | ||
| if ((opcode >= IRETURN && opcode <= RETURN)) { | ||
| mv.visitVarInsn(ALOAD, 0); | ||
| mv.visitVarInsn(ALOAD, 1); | ||
| mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACE, END_METHOD, END_SIGNATURE, false); | ||
| } | ||
| mv.visitInsn(opcode); | ||
| } | ||
| } |
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