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From "Brett Randall (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IVY-1545) Cycle in parent POM ancestry yields StackOverflowError in PomModuleDescriptorParser
Date Sun, 27 Mar 2016 01:58:25 GMT
Brett Randall created IVY-1545:
----------------------------------

             Summary: Cycle in parent POM ancestry yields StackOverflowError in PomModuleDescriptorParser
                 Key: IVY-1545
                 URL: https://issues.apache.org/jira/browse/IVY-1545
             Project: Ivy
          Issue Type: Bug
          Components: Maven Compatibility
    Affects Versions: 2.4.0, master
            Reporter: Brett Randall
            Priority: Minor


If the parent-hierarchy of a POM contains a cycle, or the artifact references itself as its
parent, a {{StackOverflowError}} as {{PomModuleDescriptorParser}} recursively attempts to
walk the parent ancestry (see stack trace below).  It does this while it looks for properties
in parent POMs.  Obviously the artifact and/or parent structure is bad (contains a cycle)
and needs to be corrected, but it would be helpful if Ivy threw a more meaningful error in
this case.

This can be exposed with two new tests I authored, {{ResolveTest#testErrorResolveMaven2ParentPomWithCycle()}}
and {{ResolveTest#testErrorResolveMaven2SelfAsParent()}}.

My solution is to {{pushNewCopyContext}} on entry to {{parseDescriptor}}, then get/add a new
{{LinkedHashSet}} to track parents seen in a walk, and throw a {{CircularDependencyException}}
should we encounter a cycle.

{noformat}
java.lang.StackOverflowError
at java.lang.String.checkBounds(String.java:370)
at java.lang.String.<init>(String.java:415)
at java.lang.String.<init>(String.java:481)
at java.io.UnixFileSystem.canonicalize0(Native Method)
at java.io.UnixFileSystem.canonicalize(UnixFileSystem.java:172)
at java.io.File.getCanonicalPath(File.java:618)
at java.io.FilePermission$1.run(FilePermission.java:221)
at java.io.FilePermission$1.run(FilePermission.java:209)
at java.security.AccessController.doPrivileged(Native Method)
at java.io.FilePermission.init(FilePermission.java:209)
at java.io.FilePermission.<init>(FilePermission.java:285)
at sun.net.www.protocol.file.FileURLConnection.getPermission(FileURLConnection.java:225)
at sun.net.www.protocol.jar.JarFileFactory.getPermission(JarFileFactory.java:156)
at sun.net.www.protocol.jar.JarFileFactory.getCachedJarFile(JarFileFactory.java:126)
at sun.net.www.protocol.jar.JarFileFactory.get(JarFileFactory.java:81)
at sun.net.www.protocol.jar.JarURLConnection.connect(JarURLConnection.java:122)
at sun.net.www.protocol.jar.JarURLConnection.getInputStream(JarURLConnection.java:150)
at java.net.URLClassLoader.getResourceAsStream(URLClassLoader.java:233)
at javax.xml.parsers.SecuritySupport$4.run(SecuritySupport.java:94)
at java.security.AccessController.doPrivileged(Native Method)
at javax.xml.parsers.SecuritySupport.getResourceAsStream(SecuritySupport.java:87)
at javax.xml.parsers.FactoryFinder.findJarServiceProvider(FactoryFinder.java:283)
at javax.xml.parsers.FactoryFinder.find(FactoryFinder.java:255)
at javax.xml.parsers.DocumentBuilderFactory.newInstance(DocumentBuilderFactory.java:121)
at org.apache.ivy.util.XMLHelper.getDocBuilder(XMLHelper.java:228)
at org.apache.ivy.util.XMLHelper.parseToDom(XMLHelper.java:222)
at org.apache.ivy.plugins.parser.m2.PomReader.<init>(PomReader.java:121)
at org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser.parseDescriptor(PomModuleDescriptorParser.java:119)
at org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser.parseDescriptor(PomModuleDescriptorParser.java:109)
at org.apache.ivy.core.cache.DefaultRepositoryCacheManager$MyModuleDescriptorProvider.provideModule(DefaultRepositoryCacheManager.java:826)
at org.apache.ivy.core.cache.ModuleDescriptorMemoryCache.getStale(ModuleDescriptorMemoryCache.java:68)
at org.apache.ivy.core.cache.DefaultRepositoryCacheManager.getStaledMd(DefaultRepositoryCacheManager.java:843)
at org.apache.ivy.core.cache.DefaultRepositoryCacheManager.cacheModuleDescriptor(DefaultRepositoryCacheManager.java:1358)
at org.apache.ivy.plugins.resolver.BasicResolver.parse(BasicResolver.java:538)
at org.apache.ivy.plugins.resolver.BasicResolver.getDependency(BasicResolver.java:273)
at org.apache.ivy.plugins.resolver.ChainResolver.getDependency(ChainResolver.java:103)
at org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser.parseOtherPom(PomModuleDescriptorParser.java:394)
at org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser.parseDescriptor(PomModuleDescriptorParser.java:139)
at org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser.parseDescriptor(PomModuleDescriptorParser.java:109)
at org.apache.ivy.core.cache.DefaultRepositoryCacheManager$MyModuleDescriptorProvider.provideModule(DefaultRepositoryCacheManager.java:826)
at org.apache.ivy.core.cache.ModuleDescriptorMemoryCache.getStale(ModuleDescriptorMemoryCache.java:68)
at org.apache.ivy.core.cache.DefaultRepositoryCacheManager.getStaledMd(DefaultRepositoryCacheManager.java:843)
at org.apache.ivy.core.cache.DefaultRepositoryCacheManager.cacheModuleDescriptor(DefaultRepositoryCacheManager.java:1358)
at org.apache.ivy.plugins.resolver.BasicResolver.parse(BasicResolver.java:538)
at org.apache.ivy.plugins.resolver.BasicResolver.getDependency(BasicResolver.java:273)
at org.apache.ivy.plugins.resolver.ChainResolver.getDependency(ChainResolver.java:103)
at org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser.parseOtherPom(PomModuleDescriptorParser.java:394)
at org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser.parseDescriptor(PomModuleDescriptorParser.java:139)
at org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser.parseDescriptor(PomModuleDescriptorParser.java:109)
at org.apache.ivy.core.cache.DefaultRepositoryCacheManager$MyModuleDescriptorProvider.provideModule(DefaultRepositoryCacheManager.java:826)
at org.apache.ivy.core.cache.ModuleDescriptorMemoryCache.getStale(ModuleDescriptorMemoryCache.java:68)
at org.apache.ivy.core.cache.DefaultRepositoryCacheManager.getStaledMd(DefaultRepositoryCacheManager.java:843)
at org.apache.ivy.core.cache.DefaultRepositoryCacheManager.cacheModuleDescriptor(DefaultRepositoryCacheManager.java:1358)
at org.apache.ivy.plugins.resolver.BasicResolver.parse(BasicResolver.java:538)
at org.apache.ivy.plugins.resolver.BasicResolver.getDependency(BasicResolver.java:273)
at org.apache.ivy.plugins.resolver.ChainResolver.getDependency(ChainResolver.java:103)
at org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser.parseOtherPom(PomModuleDescriptorParser.java:394)
at org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser.parseDescriptor(PomModuleDescriptorParser.java:139)
at org.apache.ivy.plugins.parser.m2.PomModuleDescriptorParser.parseDescriptor(PomModuleDescriptorParser.java:109)
{noformat}



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