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Trace method calls to figure out the root cause of FasterXML#179
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,157 @@ | ||
| package com.ctc.aop; | ||
|
|
||
| import org.aspectj.lang.annotation.Aspect; | ||
| import org.aspectj.lang.annotation.Before; | ||
| import org.aspectj.lang.reflect.CodeSignature; | ||
| import org.aspectj.lang.reflect.MethodSignature; | ||
| import org.aspectj.lang.annotation.AfterReturning; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.Arrays; | ||
| import java.util.HashSet; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
|
|
||
| import org.aspectj.lang.JoinPoint; | ||
|
|
||
| @Aspect | ||
| public class TraceAspect { | ||
|
|
||
| private int indent = 0; | ||
| private List<String> indents = new ArrayList<>(); | ||
| private static final Set<String> renderableTypes = new HashSet<>(Arrays.asList( | ||
| javax.xml.namespace.QName.class.getName(), | ||
| int.class.getName(), | ||
| long.class.getName(), | ||
| byte.class.getName(), | ||
| boolean.class.getName(), | ||
| Integer.class.getName(), | ||
| Long.class.getName(), | ||
| Byte.class.getName(), | ||
| Boolean.class.getName() | ||
| )); | ||
|
|
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| @Before("execution(* com.ctc.wstx..*.*(..)) && !handler(*) && !execution(* com.ctc.wstx.util.XmlChars.*(..))") | ||
| public void beforeMethodCall(JoinPoint joinPoint) { | ||
| if (joinPoint.getSignature() instanceof CodeSignature) { | ||
| CodeSignature sig = (CodeSignature) joinPoint.getSignature(); | ||
| System.out.println(indent() + "> " + sig.getDeclaringTypeName() + "." + sig.getName() + "("+ | ||
| params(sig.getParameterTypes(), joinPoint.getArgs()) +")"); | ||
| } | ||
| } | ||
|
|
||
| @AfterReturning(pointcut = "execution(* com.ctc.wstx..*.*(..)) && !handler(*) && !execution(* com.ctc.wstx.util.XmlChars.*(..))", returning = "returnValue") | ||
| //@After("execution(* com.ctc.wstx..*.*(..)) && !handler(*) && !execution(* com.ctc.wstx.util.XmlChars.*(..))") | ||
| public void afterMethodCall(JoinPoint joinPoint, Object returnValue) { | ||
| if (joinPoint.getSignature() instanceof CodeSignature) { | ||
| CodeSignature sig = (CodeSignature) joinPoint.getSignature(); | ||
| StringBuilder ret = new StringBuilder(); | ||
| String returnType = (sig instanceof MethodSignature) ? ((MethodSignature) sig).getReturnType().getName() : "void"; | ||
| param(ret, returnValue, returnType); | ||
| System.out.println(unindent() + "< " + sig.getDeclaringTypeName() + "." + sig.getName() + "("+ | ||
| params(sig.getParameterTypes(), joinPoint.getArgs()) +") : " + ret.toString()); | ||
| } | ||
| } | ||
|
|
||
| static String params(Class<?>[] types, Object[] args) { | ||
| if (types.length == 0) { | ||
| return ""; | ||
| } | ||
| StringBuilder sb = new StringBuilder(); | ||
| for (int i = 0; i < types.length; i++) { | ||
| if (i > 0) { | ||
| sb.append(", "); | ||
| } | ||
| Object val = args[i]; | ||
| final String type = types[i].getName(); | ||
| param(sb, val, type); | ||
| } | ||
| return sb.toString(); | ||
| } | ||
|
|
||
| private static void param(StringBuilder sb, Object val, final String type) { | ||
| if (val == null) { | ||
| sb.append("null").append(':').append(type); | ||
| } else if (val.getClass() == String.class) { | ||
| escapeString('"', (String) val, sb); | ||
| sb.append(':').append(type); | ||
| } else if (val != null && (val.getClass() == char.class || val.getClass() == Character.class)) { | ||
| escapeChar('\'', (Character) val, sb); | ||
| sb.append(':').append(type); | ||
| } else if (renderableTypes.contains(val.getClass().getName())) { | ||
| sb.append(val).append(':').append(type); | ||
| } else { | ||
| sb.append(type); | ||
| } | ||
| } | ||
| static void escapeString(char quote, String input, StringBuilder escapedString) { | ||
| escapedString.append(quote); | ||
| for (char c : input.toCharArray()) { | ||
| switch (c) { | ||
| case '\n': | ||
| escapedString.append("\\n"); | ||
| break; | ||
| case '\r': | ||
| escapedString.append("\\r"); | ||
| break; | ||
| case '\t': | ||
| escapedString.append("\\t"); | ||
| break; | ||
| case '\"': | ||
| escapedString.append("\\\""); | ||
| break; | ||
| case '\\': | ||
| escapedString.append("\\\\"); | ||
| break; | ||
| // Add more cases here for other special characters if needed | ||
| default: | ||
| escapedString.append(c); | ||
| } | ||
| } | ||
| escapedString.append(quote); | ||
| } | ||
|
|
||
| static void escapeChar(char quote, Character c, StringBuilder escapedString) { | ||
| escapedString.append(quote); | ||
| switch (c.charValue()) { | ||
| case '\n': | ||
| escapedString.append("\\n"); | ||
| break; | ||
| case '\r': | ||
| escapedString.append("\\r"); | ||
| break; | ||
| case '\t': | ||
| escapedString.append("\\t"); | ||
| break; | ||
| case '\"': | ||
| escapedString.append("\\\""); | ||
| break; | ||
| case '\\': | ||
| escapedString.append("\\\\"); | ||
| break; | ||
| // Add more cases here for other special characters if needed | ||
| default: | ||
| escapedString.append(c); | ||
| } | ||
| escapedString.append(quote); | ||
| } | ||
|
|
||
| private String indent() { | ||
| while (indent >= indents.size()) { | ||
| indents.add(spaces(indents.size())); | ||
| } | ||
| return indents.get(indent++); | ||
| } | ||
|
|
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| private String unindent() { | ||
| return indents.get(--indent); | ||
| } | ||
|
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| static String spaces(int size) { | ||
| StringBuilder sb = new StringBuilder(size); | ||
| for (int i = 0; i < size; i++) { | ||
| sb.append(' '); | ||
| } | ||
| return sb.toString(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| <aspectj> | ||
| <weaver> | ||
| <include within="com.ctc.wstx..*"/> | ||
| </weaver> | ||
| <aspects> | ||
| <aspect name="com.ctc.aop.TraceAspect"/> | ||
| </aspects> | ||
| </aspectj> |
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