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v1.8.4
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scouter.agent.java/src/main/java/scouter/agent/asm/JDBCGetConnectionASM.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
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| package scouter.agent.asm; | ||
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| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
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| import scouter.agent.ClassDesc; | ||
| import scouter.agent.Configure; | ||
| import scouter.agent.Logger; | ||
| import scouter.agent.asm.util.AsmUtil; | ||
| import scouter.agent.asm.util.HookingSet; | ||
| import scouter.agent.trace.TraceSQL; | ||
| import scouter.org.objectweb.asm.ClassVisitor; | ||
| 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; | ||
|
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| public class JDBCGetConnectionASM implements IASM, Opcodes { | ||
| private List<HookingSet> target = HookingSet.getHookingMethodSet(Configure.getInstance().hook_get_connection_patterns); | ||
| private Map<String, HookingSet> reserved = new HashMap<String, HookingSet>(); | ||
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| public JDBCGetConnectionASM() { | ||
| //AsmUtil.add(reserved, "weblogic/jdbc/common/internal/RmiDataSource", "getConnection()Ljava/sql/Connection;"); | ||
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| } | ||
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| public ClassVisitor transform(ClassVisitor cv, String className, ClassDesc classDesc) { | ||
| if (Configure.getInstance()._hook_dbsql_enabled == false) { | ||
| return cv; | ||
| } | ||
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| HookingSet mset = reserved.get(className); | ||
| if (mset != null) | ||
| return new DataSourceCV(cv, mset, className); | ||
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| for (int i = 0; i < target.size(); i++) { | ||
| mset = target.get(i); | ||
| if (mset.classMatch.include(className)) { | ||
| return new DataSourceCV(cv, mset, className); | ||
| } | ||
| } | ||
| return cv; | ||
| } | ||
| } | ||
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| class DataSourceCV extends ClassVisitor implements Opcodes { | ||
|
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| public String className; | ||
| private HookingSet mset; | ||
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| public DataSourceCV(ClassVisitor cv, HookingSet mset, String className) { | ||
| super(ASM5, cv); | ||
| this.mset = mset; | ||
| this.className = className; | ||
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| } | ||
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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 || mset.isA(name, desc) == false) { | ||
| return mv; | ||
| } | ||
| if (AsmUtil.isSpecial(name)) { | ||
| return mv; | ||
| } | ||
| return new DataSourceMV(access, desc, mv, className,name); | ||
| } | ||
| } | ||
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| // /////////////////////////////////////////////////////////////////////////// | ||
| class DataSourceMV extends LocalVariablesSorter implements Opcodes { | ||
| private static final String TRACE_SQL = TraceSQL.class.getName().replace('.', '/'); | ||
| private final static String METHOD = "getConnection"; | ||
| private static final String SIGNATURE = "(Ljava/sql/Connection;)Ljava/sql/Connection;"; | ||
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| private Type returnType; | ||
| private String className; | ||
| private String methodName; | ||
| private String methodDesc; | ||
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| public DataSourceMV(int access, String desc, MethodVisitor mv, String className, String methodName) { | ||
| super(ASM5,access, desc, mv); | ||
| this.returnType = Type.getReturnType(desc); | ||
| this.className = className; | ||
| this.methodName = methodName; | ||
| this.methodDesc = desc; | ||
| } | ||
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| @Override | ||
| public void visitInsn(int opcode) { | ||
| if ((opcode >= IRETURN && opcode <= RETURN)) { | ||
| int i = newLocal(this.returnType); | ||
| mv.visitVarInsn(ASTORE, i); | ||
| mv.visitVarInsn(Opcodes.ALOAD, i); | ||
| AsmUtil.PUSH(mv, className); | ||
| AsmUtil.PUSH(mv, methodName); | ||
| AsmUtil.PUSH(mv, methodDesc); | ||
| mv.visitVarInsn(Opcodes.ALOAD, 0); | ||
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| mv.visitVarInsn(Opcodes.ALOAD, i); | ||
| mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACE_SQL, METHOD, SIGNATURE,false); | ||
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| } | ||
| mv.visitInsn(opcode); | ||
| } | ||
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| } |
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