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From "Valentin Valchev (JIRA)" <j...@apache.org>
Subject [jira] Created: (FELIX-2713) Problem in HtmlConfigurationWriter
Date Wed, 01 Dec 2010 07:39:10 GMT
Problem in HtmlConfigurationWriter
----------------------------------

                 Key: FELIX-2713
                 URL: https://issues.apache.org/jira/browse/FELIX-2713
             Project: Felix
          Issue Type: Bug
          Components: Web Console
    Affects Versions: webconsole-3.1.6
            Reporter: Valentin Valchev
         Attachments: stackoverflow.patch

With some Skelmir VM and some J9 versions, when switching to the Web Console Configuration
Render plugin, an exception will occur and no data will be shown. In some cases, this will
even cause the death of the VM process.

The exception is because of different PrintWriter implementation that cases StackOverflowError,
caused by an endless loop:
	at java.io.PrintWriter.write(PrintWriter.java:396)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:495)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:541)
	at java.io.PrintWriter.write(PrintWriter.java:396)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:495)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:541)
	at java.io.PrintWriter.write(PrintWriter.java:396)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:495)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:541)
	at java.io.PrintWriter.write(PrintWriter.java:396)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:495)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:541)
	at java.io.PrintWriter.write(PrintWriter.java:396)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:495)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:541)
	at java.io.PrintWriter.write(PrintWriter.java:396)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:483)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:541)
	at java.io.PrintWriter.write(PrintWriter.java:396)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.write(ConfigurationRender.java:513)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender$HtmlConfigurationWriter.println(ConfigurationRender.java:463)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender.printConfigurationPrinter(ConfigurationRender.java:355)
	at org.apache.felix.webconsole.internal.misc.ConfigurationRender.doGet(ConfigurationRender.java:163)


I provide a patch as a solution for the problem.

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