require 'rbconfig' fails on GAE because of NullPointerException
---------------------------------------------------------------
Key: JRUBY-4749
URL: http://jira.codehaus.org/browse/JRUBY-4749
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.5.0.RC1
Environment: Google App Engine
Reporter: Yoko Harada
Fix For: JRuby 1.5
Attachments: DahliaRbConfigLibraryLoad.java, RbConfigLibrary.patch
Platform.ARCH returns null on GAE. However, Platform.ARCH is used to set the
value of "host_cpu" and "target_cpu" in RbConfigLibrary without checking null.
This raised the exception below from the attached test servlet.
{noformat}
Uncaught exception from servlet
java.io.IOException: java.lang.NullPointerException
at
com.servletgarden.dahlia.DahliaRbConfigLibraryLoad.doGet(DahliaRbConfigLibraryLoad.java:45)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at
com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:97)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:35)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:238)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at
com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:135)
at
com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:243)
at
com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:5838)
at
com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:5836)
at
com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:24)
at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:398)
at com.google.net.rpc.impl.Server$2.run(Server.java:852)
at
com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java:56)
at
com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan(LocalTraceSpanBuilder.java:576)
at com.google.net.rpc.impl.Server.startRpc(Server.java:807)
at com.google.net.rpc.impl.Server.processRequest(Server.java:369)
at
com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java:442)
at
com.google.net.rpc.impl.RpcConnection.parseMessages(RpcConnection.java:319)
at
com.google.net.rpc.impl.RpcConnection.dataReceived(RpcConnection.java:290)
at com.google.net.async.Connection.handleReadEvent(Connection.java:474)
at
com.google.net.async.EventDispatcher.processNetworkEvents(EventDispatcher.java:831)
at
com.google.net.async.EventDispatcher.internalLoop(EventDispatcher.java:207)
at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:103)
at
com.google.net.rpc.RpcService.runUntilServerShutdown(RpcService.java:251)
at
com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run(JavaRuntime.java:404)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at org.jruby.RubyEncoding.encode(RubyEncoding.java:165)
at org.jruby.RubyEncoding.encodeUTF8(RubyEncoding.java:157)
at org.jruby.RubyString.<init>(RubyString.java:375)
at org.jruby.RubyString.newString(RubyString.java:454)
at org.jruby.Ruby.newString(Ruby.java:2947)
at
org.jruby.libraries.RbConfigLibrary.setConfig(RbConfigLibrary.java:285)
at org.jruby.libraries.RbConfigLibrary.load(RbConfigLibrary.java:136)
at
com.servletgarden.dahlia.DahliaRbConfigLibraryLoad.doGet(DahliaRbConfigLibraryLoad.java:41)
... 43 more
{noformat}
Perhaps, the attached patch is one solution to fix this bug.
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