Applied mapping file contains invalid entries

[Denqu]

Hello everyone,

first of all, thank you for the proguard maven plugin :)

Unfortunately we have noticed a issue, when using the applyMappingFile option.

Here is our setup:

• a maven project with many modules, which are also executed parallel
• enabled incremental option
• applyMappingFile is set to "./globalMappingFile.txt" (so all modules write into that file)
• Plugin Version 2.5.1

While running the maven build, all modules executes the proguard-maven-plugin. The plugin executions write into the applied mapping file. Rarely thewrite process of the proguard-maven-plugin results into a "broken" mapping file. Entries like com.my.company.class.LoremIpsumClass -> com.mycom.my.company.class.AnotherLoremIpsumClass -> com.my.company.class.AnotherLoremIpsumClass appears in the mapping file.

My assumption is, that multiple plugin executions writes at the same time into the file. So maybe the write process needs to be synchronized.