com.google.gwt.logging.server
Class StackTraceDeobfuscator

java.lang.Object
  com.google.gwt.logging.server.StackTraceDeobfuscator

public class StackTraceDeobfuscator
extends java.lang.Object

Deobfuscates stack traces on the server side. This class requires that you have turned on emulated stack traces, via <set-property name="compiler.stackMode" value="emulated" /> in your .gwt.xml module file for non-Chrome browsers or <set-property name="compiler.useSourceMaps" value="true"/> for Chrome, and moved your symbol map files to a location accessible by your server sever side code. You can use the GWT compiler -deploy command line argument to specify the location of the folder into which the generated symbolMaps directory is written. By default, the final symbolMaps directory is war/WEB-INF/deploy/yourmodulename/symbolMaps/. Pass the resulting directory location into this class' symbolMapsDirectory constructor or setSymbolMapsDirectory(String) setter method. TODO(unnurg): Combine this code with similar code in JUnitHostImpl

fragmentIdPattern

java.util.regex.Pattern fragmentIdPattern

symbolMapsDirectory

protected java.io.File symbolMapsDirectory

StackTraceDeobfuscator

public StackTraceDeobfuscator(java.lang.String symbolMapsDirectory)

Constructor, which takes a symbolMaps directory as its argument. Symbol maps are generated into the location specified by the GWT compiler -deploy command line argument.

Parameters:

symbolMapsDirectory - the symbolMaps directory with, or without trailing directory separator character

deobfuscateLogRecord

public java.util.logging.LogRecord deobfuscateLogRecord(java.util.logging.LogRecord lr,
                                                        java.lang.String strongName)

Best effort resymbolization of a log record's stack trace.

Parameters:

lr - the log record to resymbolize

strongName - the GWT permutation strong name

Returns:

the best effort resymbolized log record

deobfuscateStackTrace

public java.lang.StackTraceElement[] deobfuscateStackTrace(java.lang.StackTraceElement[] st,
                                                           java.lang.String strongName)

Convenience method which resymbolizes an entire stack trace to extent possible.

Parameters:

st - the stack trace to resymbolize

strongName - the GWT permutation strong name

Returns:

a best effort resymbolized stack trace

resymbolize

public java.lang.StackTraceElement resymbolize(java.lang.StackTraceElement ste,
                                               java.lang.String strongName)

Best effort resymbolization of a a single stack trace element.

Parameters:

ste - the stack trace element to resymbolize

strongName - the GWT permutation strong name

Returns:

the best effort resymbolized stack trace element

setSymbolMapsDirectory

public void setSymbolMapsDirectory(java.lang.String symbolMapsDirectory)

getSourceMapInputStream

protected java.io.InputStream getSourceMapInputStream(java.lang.String permutationStrongName,
                                                      int fragmentNumber)
                                               throws java.io.IOException

Throws:

java.io.IOException

getSymbolMapInputStream

protected java.io.InputStream getSymbolMapInputStream(java.lang.String permutationStrongName)
                                               throws java.io.IOException

Retrieves a new InputStream for the given permutation strong name. This implementation, which subclasses may override, returns a InputStream for the permutation-strong-name.symbolMap file in the symbolMaps directory.

Parameters:

permutationStrongName - the GWT permutation strong name

Returns:

a new InputStream

Throws:

java.io.IOException