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scouter.agent.asm.jdbc.PsExecuteMV Maven / Gradle / Ivy
/*
* Copyright 2015 Scouter Project.
*
* 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.jdbc;
import scouter.agent.asm.util.AsmUtil;
import scouter.agent.trace.TraceSQL;
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;
public class PsExecuteMV extends LocalVariablesSorter implements Opcodes {
private static Set target = new HashSet();
static {
target.add("execute");
target.add("executeQuery");
target.add("executeUpdate");
target.add("executeBatch");
}
private final byte methodType;
public static boolean isTarget(String name) {
return target.contains(name);
}
private final static String TRACESQL = TraceSQL.class.getName().replace('.', '/');
private final static String START_METHOD = "start";
private static final String START_SIGNATURE = "(Ljava/lang/Object;Lscouter/agent/trace/SqlParameter;B)Ljava/lang/Object;";
private final static String END_METHOD = "end";
private static final String END_SIGNATURE = "(Ljava/lang/Object;Ljava/lang/Throwable;I)V";
public PsExecuteMV(int access, String desc, MethodVisitor mv, String owner,String name) {
super(ASM4,access, desc, mv);
this.owner = owner;
this.returnType = Type.getReturnType(desc);
this.desc = desc;
this.methodType = StExecuteMV.methodType(name);
}
private Label startFinally = new Label();
private String owner;
private int statIdx;
private final Type returnType;
private final String desc;
@Override
public void visitCode() {
mv.visitVarInsn(ALOAD, 0);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, owner, TraceSQL.PSTMT_PARAM_FIELD, "Lscouter/agent/trace/SqlParameter;");
AsmUtil.PUSH(mv, this.methodType);
mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACESQL, START_METHOD, START_SIGNATURE,false);
statIdx = newLocal(scouter.org.objectweb.asm.Type.getType(Object.class));
mv.visitVarInsn(Opcodes.ASTORE, statIdx);
mv.visitLabel(startFinally);
mv.visitCode();
}
@Override
public void visitInsn(int opcode) {
if ((opcode >= IRETURN && opcode <= RETURN)) {
int lvPosReturn;
switch (returnType.getSort()) {
case Type.ARRAY:
if(returnType.getElementType().getSort() == Type.INT) {
lvPosReturn = newLocal(returnType);
mv.visitVarInsn(Opcodes.ASTORE, lvPosReturn);
mv.visitVarInsn(Opcodes.ALOAD, lvPosReturn);
mv.visitVarInsn(Opcodes.ALOAD, statIdx);
mv.visitInsn(Opcodes.ACONST_NULL);
mv.visitVarInsn(Opcodes.ALOAD, lvPosReturn);
mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACESQL, "getIntArraySum", "([I)I", false);
} else {
mv.visitVarInsn(Opcodes.ALOAD, statIdx);
mv.visitInsn(Opcodes.ACONST_NULL);
AsmUtil.PUSH(mv, -1);
}
break;
case Type.BOOLEAN:
case Type.INT:
lvPosReturn = newLocal(returnType);
mv.visitVarInsn(Opcodes.ISTORE, lvPosReturn);
mv.visitVarInsn(Opcodes.ILOAD, lvPosReturn);
mv.visitVarInsn(Opcodes.ALOAD, statIdx);
mv.visitInsn(Opcodes.ACONST_NULL);
mv.visitVarInsn(Opcodes.ILOAD, lvPosReturn);
if(returnType.getSort()== Type.BOOLEAN){
mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACESQL, "toInt", "(Z)I",false);
}
break;
default:
mv.visitVarInsn(Opcodes.ALOAD, statIdx);
mv.visitInsn(Opcodes.ACONST_NULL);
AsmUtil.PUSH(mv, -1);
}
mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACESQL, END_METHOD, END_SIGNATURE,false);
}
mv.visitInsn(opcode);
}
@Override
public void visitMaxs(int maxStack, int maxLocals) {
Label endFinally = new Label();
mv.visitTryCatchBlock(startFinally, endFinally, endFinally, null);
mv.visitLabel(endFinally);
mv.visitInsn(DUP);
int errIdx = newLocal(Type.getType(Throwable.class));
mv.visitVarInsn(Opcodes.ASTORE, errIdx);
mv.visitVarInsn(Opcodes.ALOAD, statIdx);
mv.visitVarInsn(Opcodes.ALOAD, errIdx);
AsmUtil.PUSH(mv, -3);
mv.visitMethodInsn(Opcodes.INVOKESTATIC, TRACESQL, END_METHOD, END_SIGNATURE,false);
mv.visitInsn(ATHROW);
mv.visitMaxs(maxStack + 8, maxLocals + 2);
}
public static void main(String[] args) {
Type type = Type.getReturnType("(Z)[I");
System.out.println("type = " + type.getSort());
System.out.println("dim = " + type.getDimensions());
System.out.println("element = " + type.getElementType());
}
}
