AbstractFileLookup.lookupFileStrict broken on Windows

The fix in ISPN-5949 breaks Windows compatibility.

infinispan.xml is configured in application.properties

spring.cache.jcache.config=classpath:spring/infinispan.xml

When using Infinispan in a Spring Boot application (fat jar or Eclipse IDE) the following exception is thrown:

Caused by: org.infinispan.commons.CacheConfigurationException:
com.ctc.wstx.exc.WstxIOException: Stream closed
	at org.infinispan.configuration.parsing.ParserRegistry.parse(ParserRegistry.java:119)
	at org.infinispan.jcache.embedded.JCacheManager.getConfigurationBuilderHolder(JCacheManager.java:100)
	at org.infinispan.jcache.embedded.JCacheManager.<init>(JCacheManager.java:56)
	at org.infinispan.jcache.embedded.JCachingProvider.createCacheManager(JCachingProvider.java:46)
	at org.infinispan.jcache.AbstractJCachingProvider.getCacheManager(AbstractJCachingProvider.java:67)
	at org.springframework.boot.autoconfigure.cache.JCacheCacheConfiguration.createCacheManager(JCacheCacheConfiguration.java:101)
        ...

When AbstractFileLookup.lookupFileStrict() is called in JCacheManager.getConfigurationHolder() the URI used for infinispan.xml looks something like this:

• fat jar

  jar:file:/C:/projects/myapp/myservice-0.0.1.jar!/spring/infinispan.xml
  

• running app from within IDE

  file:/C:/projects/workspace/myservice/target/classes/spring/infinispan.xml
  

The problem ist now twofold:

1. First this nasty 'C:' in the Windows path breaks the parsing code in AbstractFileLookup.lookupFileStrict(), as lastIndexOf(':') cuts the drive letter from the path and not just 'jar:file:' as intended. The resulting fileName cannot be resolved and cl.getResourceAsStream(fileName) returns null.

      public InputStream lookupFileStrict(URI uri, ClassLoader cl) throws FileNotFoundException {
         //in case we don't have only file schema, but {{jar:file}} schema too, we have to get rid of all schemas
         int startIndex = uri.toString().lastIndexOf(':');
         String fileName = uri.toString().substring(startIndex + 1);
   
         return cl.getResourceAsStream(fileName);
      }
   

2. This method gets called too when running from within an IDE (at least Eclipse with Maven integration). But in this case Spring JCacheCacheConfiguration magic (createCachemanager() - configLocation.getURI()) resolves this path to a full path as seen above (not a classpath relative to /target/classes). As this path ist not on the classpath, cl.getResourceAsStream(fileName) returns null.

In both cases lookupFileStrict returns null as InputStream which in turn leads to the exception mentioned above.

The old code of lookupFileStrict()

return new FileInputStream(new File(uri));

works fine from within the IDE, but is broken for a fat jar (ISPN-5949).

I am currently trying to find a workaround for this. But as far as I can see, the current behaviour (fix or no fix) is going to a problem when developing/running Infinispan enabled applications on Windows.