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[JIRA] Created: (LBCLASSIC-159) Invalid multiple configuration file warning

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[JIRA] Created: (LBCLASSIC-159) Invalid multiple configuration file warning

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Invalid multiple configuration file warning
-------------------------------------------

                 Key: LBCLASSIC-159
                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
             Project: logback-classic
          Issue Type: Bug
          Components: Other
    Affects Versions: 0.917
         Environment: Resin webapp
            Reporter: Hontvári József
            Assignee: Logback dev list


I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.

Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  

20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]


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[JIRA] Commented: (LBCLASSIC-159) Invalid multiple configuration file warning

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    [ http://jira.qos.ch/browse/LBCLASSIC-159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11807#action_11807 ]

Derek Mahar commented on LBCLASSIC-159:
---------------------------------------

I encounter a similar problem when using Logback, SLF4J, and running in a WebLogic 10.3.2 server container.  We have separate Web and EJB applications, both of which use Logback and SLF4J.

16:50:25,814 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
16:50:25,814 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [file:/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml]
16:50:25,816 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [logback.xml] occurs multiple times on the classpath.
16:50:25,816 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [logback.xml] occurs at [file:/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml]
16:50:25,816 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [logback.xml] occurs at [file:/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml]
16:50:25,923 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
16:50:25,924 |-INFO in ch.qos.logback.classic.turbo.ReconfigureOnChangeFilter@1a15291 - Will scan for changes in file [/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml] every 60 seconds.

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Issue Comment Edited: (LBCLASSIC-159) Invalid multiple configuration file warning

by JIRA noreply-jira@qos.ch :: Rate this Message:

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    [ http://jira.qos.ch/browse/LBCLASSIC-159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11807#action_11807 ]

Derek Mahar edited comment on LBCLASSIC-159 at 8/4/10 6:54 PM:
---------------------------------------------------------------

I encounter a similar problem when using Logback 0.9.21, SLF4J 1.6.0, and running in a WebLogic 10.3.2 server container.  We have separate Web and EJB applications, both of which use Logback and SLF4J.

16:50:25,814 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
16:50:25,814 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [file:/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml]
16:50:25,816 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [logback.xml] occurs multiple times on the classpath.
16:50:25,816 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [logback.xml] occurs at [file:/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml]
16:50:25,816 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [logback.xml] occurs at [file:/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml]
16:50:25,923 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
16:50:25,924 |-INFO in ch.qos.logback.classic.turbo.ReconfigureOnChangeFilter@1a15291 - Will scan for changes in file [/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml] every 60 seconds.

      was (Author: derekmahar):
    I encounter a similar problem when using Logback, SLF4J, and running in a WebLogic 10.3.2 server container.  We have separate Web and EJB applications, both of which use Logback and SLF4J.

16:50:25,814 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
16:50:25,814 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [file:/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml]
16:50:25,816 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [logback.xml] occurs multiple times on the classpath.
16:50:25,816 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [logback.xml] occurs at [file:/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml]
16:50:25,816 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [logback.xml] occurs at [file:/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml]
16:50:25,923 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
16:50:25,924 |-INFO in ch.qos.logback.classic.turbo.ReconfigureOnChangeFilter@1a15291 - Will scan for changes in file [/opt/dap/domains/ap0491/uat1/domain/instance-config/logback.xml] every 60 seconds.
 

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Commented: (LBCLASSIC-159) Invalid multiple configuration file warning

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    [ http://jira.qos.ch/browse/LBCLASSIC-159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11808#action_11808 ]

Derek Mahar commented on LBCLASSIC-159:
---------------------------------------

Robert Elliot explains in http://marc.info/?l=logback-user&m=128094084217480&w=2 how this bug occurs when running an application in a WebLogic server context.

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Issue Comment Edited: (LBCLASSIC-159) Invalid multiple configuration file warning

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    [ http://jira.qos.ch/browse/LBCLASSIC-159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11808#action_11808 ]

Derek Mahar edited comment on LBCLASSIC-159 at 8/4/10 7:59 PM:
---------------------------------------------------------------

Robert Elliot explains in http://marc.info/?l=logback-user&m=128094084217480&w=2 how this bug occurs when running an application in a WebLogic server context.  The reason that this happens may be the same reason for http://bugzilla.slf4j.org/show_bug.cgi?id=138 in SLF4J.

      was (Author: derekmahar):
    Robert Elliot explains in http://marc.info/?l=logback-user&m=128094084217480&w=2 how this bug occurs when running an application in a WebLogic server context.
 

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Commented: (LBCLASSIC-159) Invalid multiple configuration file warning

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    [ http://jira.qos.ch/browse/LBCLASSIC-159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11809#action_11809 ]

Derek Mahar commented on LBCLASSIC-159:
---------------------------------------

Changing the return value of method getResourceOccurenceCount(String, ClassLoader) from "List<URL>" to "Set<URL>" in class ch.qos.logback.core.util.Loader should resolve this issue:

  public static List<URL> getResourceOccurenceCount(String resource,
      ClassLoader classLoader) throws IOException {
    List<URL> urlList = new ArrayList<URL>();
    Enumeration<URL> urlEnum = classLoader.getResources(resource);
    while (urlEnum.hasMoreElements()) {
      URL url = urlEnum.nextElement();
      urlList.add(url);
    }

    return urlList;
  }

Method multiplicityWarning(String, ClassLoader) in class ch.qos.logback.classic.util.ContextInitializer uses this method to decide whether or not to print the multiple classpath entry warning:

  private void multiplicityWarning(String resourceName, ClassLoader classLoader) {
    List<URL> urlList = null;
    StatusManager sm = loggerContext.getStatusManager();
    try {
      urlList = Loader.getResourceOccurenceCount(resourceName, classLoader);
    } catch (IOException e) {
      sm.add(new ErrorStatus("Failed to get url list for resource [" + resourceName + "]",
              loggerContext, e));
    }
    if (urlList != null && urlList.size() > 1) {
      sm.add(new WarnStatus("Resource [" + resourceName + "] occurs multiple times on the classpath.",
              loggerContext));
      for (URL url : urlList) {
        sm.add(new WarnStatus("Resource [" + resourceName + "] occurs at [" + url.toString() + "]",
                loggerContext));
      }
    }
  }

(Note that this is the state of the code as of commit http://github.com/ceki/logback/commit/10b6686ab92a53f860b14953ce8493d5c3534a46.)

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Issue Comment Edited: (LBCLASSIC-159) Invalid multiple configuration file warning

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    [ http://jira.qos.ch/browse/LBCLASSIC-159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11809#action_11809 ]

Derek Mahar edited comment on LBCLASSIC-159 at 8/4/10 8:36 PM:
---------------------------------------------------------------

Changing the return value of method getResourceOccurenceCount(String, ClassLoader) from "List<URL>" to "Set<URL>" in class ch.qos.logback.core.util.Loader should resolve this issue:

  public static List<URL> getResourceOccurenceCount(String resource,
      ClassLoader classLoader) throws IOException {
    List<URL> urlList = new ArrayList<URL>();
    Enumeration<URL> urlEnum = classLoader.getResources(resource);
    while (urlEnum.hasMoreElements()) {
      URL url = urlEnum.nextElement();
      urlList.add(url);
    }

    return urlList;
  }

Method multiplicityWarning(String, ClassLoader) in class ch.qos.logback.classic.util.ContextInitializer uses this method to decide whether or not to print the multiple classpath entry warning:

  private void multiplicityWarning(String resourceName, ClassLoader classLoader) {
    List<URL> urlList = null;
    StatusManager sm = loggerContext.getStatusManager();
    try {
      urlList = Loader.getResourceOccurenceCount(resourceName, classLoader);
    } catch (IOException e) {
      sm.add(new ErrorStatus("Failed to get url list for resource [" + resourceName + "]",
              loggerContext, e));
    }
    if (urlList != null && urlList.size() > 1) {
      sm.add(new WarnStatus("Resource [" + resourceName + "] occurs multiple times on the classpath.",
              loggerContext));
      for (URL url : urlList) {
        sm.add(new WarnStatus("Resource [" + resourceName + "] occurs at [" + url.toString() + "]",
                loggerContext));
      }
    }
  }

(Note that this is the state of the code as of commit http://github.com/ceki/logback/commit/10b6686ab92a53f860b14953ce8493d5c3534a46 .)

      was (Author: derekmahar):
    Changing the return value of method getResourceOccurenceCount(String, ClassLoader) from "List<URL>" to "Set<URL>" in class ch.qos.logback.core.util.Loader should resolve this issue:

  public static List<URL> getResourceOccurenceCount(String resource,
      ClassLoader classLoader) throws IOException {
    List<URL> urlList = new ArrayList<URL>();
    Enumeration<URL> urlEnum = classLoader.getResources(resource);
    while (urlEnum.hasMoreElements()) {
      URL url = urlEnum.nextElement();
      urlList.add(url);
    }

    return urlList;
  }

Method multiplicityWarning(String, ClassLoader) in class ch.qos.logback.classic.util.ContextInitializer uses this method to decide whether or not to print the multiple classpath entry warning:

  private void multiplicityWarning(String resourceName, ClassLoader classLoader) {
    List<URL> urlList = null;
    StatusManager sm = loggerContext.getStatusManager();
    try {
      urlList = Loader.getResourceOccurenceCount(resourceName, classLoader);
    } catch (IOException e) {
      sm.add(new ErrorStatus("Failed to get url list for resource [" + resourceName + "]",
              loggerContext, e));
    }
    if (urlList != null && urlList.size() > 1) {
      sm.add(new WarnStatus("Resource [" + resourceName + "] occurs multiple times on the classpath.",
              loggerContext));
      for (URL url : urlList) {
        sm.add(new WarnStatus("Resource [" + resourceName + "] occurs at [" + url.toString() + "]",
                loggerContext));
      }
    }
  }

(Note that this is the state of the code as of commit http://github.com/ceki/logback/commit/10b6686ab92a53f860b14953ce8493d5c3534a46.)
 

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Issue Comment Edited: (LBCLASSIC-159) Invalid multiple configuration file warning

by JIRA noreply-jira@qos.ch :: Rate this Message:

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    [ http://jira.qos.ch/browse/LBCLASSIC-159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11809#action_11809 ]

Derek Mahar edited comment on LBCLASSIC-159 at 8/4/10 9:02 PM:
---------------------------------------------------------------

Changing the return value of method getResourceOccurenceCount(String, ClassLoader) from "List<URL>" to "Set<URL>" in class ch.qos.logback.core.util.Loader should resolve this issue:

  public static List<URL> getResourceOccurenceCount(String resource,
      ClassLoader classLoader) throws IOException {
    List<URL> urlList = new ArrayList<URL>();
    Enumeration<URL> urlEnum = classLoader.getResources(resource);
    while (urlEnum.hasMoreElements()) {
      URL url = urlEnum.nextElement();
      urlList.add(url);
    }

    return urlList;
  }

Method multiplicityWarning(String, ClassLoader) in class ch.qos.logback.classic.util.ContextInitializer uses this method to decide whether or not to print the multiple classpath entry warning:

  private void multiplicityWarning(String resourceName, ClassLoader classLoader) {
    List<URL> urlList = null;
    StatusManager sm = loggerContext.getStatusManager();
    try {
      urlList = Loader.getResourceOccurenceCount(resourceName, classLoader);
    } catch (IOException e) {
      sm.add(new ErrorStatus("Failed to get url list for resource [" + resourceName + "]",
              loggerContext, e));
    }
    if (urlList != null && urlList.size() > 1) {
      sm.add(new WarnStatus("Resource [" + resourceName + "] occurs multiple times on the classpath.",
              loggerContext));
      for (URL url : urlList) {
        sm.add(new WarnStatus("Resource [" + resourceName + "] occurs at [" + url.toString() + "]",
                loggerContext));
      }
    }
  }

(Note that this is the state of the code as of release 0.9.24 (http://github.com/derekmahar/logback/tree/v_0.9.24) or commit 10b6686ab92a53f860b14953ce8493d5c3534a46 (http://github.com/ceki/logback/commit/10b6686ab92a53f860b14953ce8493d5c3534a46).)

      was (Author: derekmahar):
    Changing the return value of method getResourceOccurenceCount(String, ClassLoader) from "List<URL>" to "Set<URL>" in class ch.qos.logback.core.util.Loader should resolve this issue:

  public static List<URL> getResourceOccurenceCount(String resource,
      ClassLoader classLoader) throws IOException {
    List<URL> urlList = new ArrayList<URL>();
    Enumeration<URL> urlEnum = classLoader.getResources(resource);
    while (urlEnum.hasMoreElements()) {
      URL url = urlEnum.nextElement();
      urlList.add(url);
    }

    return urlList;
  }

Method multiplicityWarning(String, ClassLoader) in class ch.qos.logback.classic.util.ContextInitializer uses this method to decide whether or not to print the multiple classpath entry warning:

  private void multiplicityWarning(String resourceName, ClassLoader classLoader) {
    List<URL> urlList = null;
    StatusManager sm = loggerContext.getStatusManager();
    try {
      urlList = Loader.getResourceOccurenceCount(resourceName, classLoader);
    } catch (IOException e) {
      sm.add(new ErrorStatus("Failed to get url list for resource [" + resourceName + "]",
              loggerContext, e));
    }
    if (urlList != null && urlList.size() > 1) {
      sm.add(new WarnStatus("Resource [" + resourceName + "] occurs multiple times on the classpath.",
              loggerContext));
      for (URL url : urlList) {
        sm.add(new WarnStatus("Resource [" + resourceName + "] occurs at [" + url.toString() + "]",
                loggerContext));
      }
    }
  }

(Note that this is the state of the code as of commit http://github.com/ceki/logback/commit/10b6686ab92a53f860b14953ce8493d5c3534a46 .)
 

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Issue Comment Edited: (LBCLASSIC-159) Invalid multiple configuration file warning

by JIRA noreply-jira@qos.ch :: Rate this Message:

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    [ http://jira.qos.ch/browse/LBCLASSIC-159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11809#action_11809 ]

Derek Mahar edited comment on LBCLASSIC-159 at 8/4/10 9:03 PM:
---------------------------------------------------------------

Changing the return value of method getResourceOccurenceCount(String, ClassLoader) from "List<URL>" to "Set<URL>" in class ch.qos.logback.core.util.Loader should resolve this issue:

  public static List<URL> getResourceOccurenceCount(String resource,
      ClassLoader classLoader) throws IOException {
    List<URL> urlList = new ArrayList<URL>();
    Enumeration<URL> urlEnum = classLoader.getResources(resource);
    while (urlEnum.hasMoreElements()) {
      URL url = urlEnum.nextElement();
      urlList.add(url);
    }

    return urlList;
  }

Method multiplicityWarning(String, ClassLoader) in class ch.qos.logback.classic.util.ContextInitializer uses this method to decide whether or not to print the multiple classpath entry warning:

  private void multiplicityWarning(String resourceName, ClassLoader classLoader) {
    List<URL> urlList = null;
    StatusManager sm = loggerContext.getStatusManager();
    try {
      urlList = Loader.getResourceOccurenceCount(resourceName, classLoader);
    } catch (IOException e) {
      sm.add(new ErrorStatus("Failed to get url list for resource [" + resourceName + "]",
              loggerContext, e));
    }
    if (urlList != null && urlList.size() > 1) {
      sm.add(new WarnStatus("Resource [" + resourceName + "] occurs multiple times on the classpath.",
              loggerContext));
      for (URL url : urlList) {
        sm.add(new WarnStatus("Resource [" + resourceName + "] occurs at [" + url.toString() + "]",
                loggerContext));
      }
    }
  }

(Note that this is the state of the code as of release 0.9.24 (http://github.com/derekmahar/logback/tree/v_0.9.24) or commit 10b6686ab92a53f860b14953ce8493d5c3534a46 (http://github.com/ceki/logback/commit/10b6686ab92a53f860b14953ce8493d5c3534a46 ).)

      was (Author: derekmahar):
    Changing the return value of method getResourceOccurenceCount(String, ClassLoader) from "List<URL>" to "Set<URL>" in class ch.qos.logback.core.util.Loader should resolve this issue:

  public static List<URL> getResourceOccurenceCount(String resource,
      ClassLoader classLoader) throws IOException {
    List<URL> urlList = new ArrayList<URL>();
    Enumeration<URL> urlEnum = classLoader.getResources(resource);
    while (urlEnum.hasMoreElements()) {
      URL url = urlEnum.nextElement();
      urlList.add(url);
    }

    return urlList;
  }

Method multiplicityWarning(String, ClassLoader) in class ch.qos.logback.classic.util.ContextInitializer uses this method to decide whether or not to print the multiple classpath entry warning:

  private void multiplicityWarning(String resourceName, ClassLoader classLoader) {
    List<URL> urlList = null;
    StatusManager sm = loggerContext.getStatusManager();
    try {
      urlList = Loader.getResourceOccurenceCount(resourceName, classLoader);
    } catch (IOException e) {
      sm.add(new ErrorStatus("Failed to get url list for resource [" + resourceName + "]",
              loggerContext, e));
    }
    if (urlList != null && urlList.size() > 1) {
      sm.add(new WarnStatus("Resource [" + resourceName + "] occurs multiple times on the classpath.",
              loggerContext));
      for (URL url : urlList) {
        sm.add(new WarnStatus("Resource [" + resourceName + "] occurs at [" + url.toString() + "]",
                loggerContext));
      }
    }
  }

(Note that this is the state of the code as of release 0.9.24 (http://github.com/derekmahar/logback/tree/v_0.9.24) or commit 10b6686ab92a53f860b14953ce8493d5c3534a46 (http://github.com/ceki/logback/commit/10b6686ab92a53f860b14953ce8493d5c3534a46).)
 

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Commented: (LBCLASSIC-159) Invalid multiple configuration file warning

by JIRA noreply-jira@qos.ch :: Rate this Message:

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    [ http://jira.qos.ch/browse/LBCLASSIC-159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11810#action_11810 ]

Derek Mahar commented on LBCLASSIC-159:
---------------------------------------

Please note that this is a production issue for me since our production environment disallows applications to write messages to standard output.  Since this duplicate classpath entry message causes Logback to write warning and informational messages to standard output, this may prevent us from releasing our application into production.

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Commented: (LBCLASSIC-159) Invalid multiple configuration file warning

by JIRA noreply-jira@qos.ch :: Rate this Message:

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    [ http://jira.qos.ch/browse/LBCLASSIC-159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11811#action_11811 ]

Derek Mahar commented on LBCLASSIC-159:
---------------------------------------

I have implemented a fix for LBCLASSIC-159 (see http://github.com/derekmahar/logback/commit/1990e7c9c0e35ba408f73a2c654e8d292a0849af) that essentially does what Robert Elliot recommends in http://marc.info/?l=logback-user&m=128094084217480&w=2 and uses a set instead of a list to hold the resources that the classloader returns, effectively eliminating any duplicate classpath resources. I have successfully tested the fix with Logback 0.9.24, SLF4J 1.6.1, and WebLogic 10.3.2.  With this fix in place, Logback no longer displays the duplicate classpath entry status messages (or any of the other informational messages) to standard output.

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Issue Comment Edited: (LBCLASSIC-159) Invalid multiple configuration file warning

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Derek Mahar edited comment on LBCLASSIC-159 at 8/5/10 3:10 AM:
---------------------------------------------------------------

I have implemented a fix for this problem at http://github.com/derekmahar/logback/commit/1990e7c9c0e35ba408f73a2c654e8d292a0849af that essentially does what Robert Elliot recommends in http://marc.info/?l=logback-user&m=128094084217480&w=2 and uses a set instead of a list to hold the resources that the classloader returns, effectively eliminating any duplicate classpath resources. I have successfully tested the fix with Logback 0.9.24, SLF4J 1.6.1, and WebLogic 10.3.2.  With this fix in place, Logback no longer displays the duplicate classpath entry status messages (or any of the other informational messages) to standard output.

      was (Author: derekmahar):
    I have implemented a fix for LBCLASSIC-159 (see http://github.com/derekmahar/logback/commit/1990e7c9c0e35ba408f73a2c654e8d292a0849af) that essentially does what Robert Elliot recommends in http://marc.info/?l=logback-user&m=128094084217480&w=2 and uses a set instead of a list to hold the resources that the classloader returns, effectively eliminating any duplicate classpath resources. I have successfully tested the fix with Logback 0.9.24, SLF4J 1.6.1, and WebLogic 10.3.2.  With this fix in place, Logback no longer displays the duplicate classpath entry status messages (or any of the other informational messages) to standard output.
 

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Issue Comment Edited: (LBCLASSIC-159) Invalid multiple configuration file warning

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Derek Mahar edited comment on LBCLASSIC-159 at 8/5/10 3:32 AM:
---------------------------------------------------------------

Robert Elliot explains in http://marc.info/?l=logback-user&m=128094084217480&w=2 how this bug occurs when running an application in a WebLogic server context.  The reason that this happens may be the same reason for http://bugzilla.slf4j.org/show_bug.cgi?id=138 in SLF4J.  See additional discussion of this issue in http://stackoverflow.com/questions/3401051/suppress-all-logback-output-to-console.

      was (Author: derekmahar):
    Robert Elliot explains in http://marc.info/?l=logback-user&m=128094084217480&w=2 how this bug occurs when running an application in a WebLogic server context.  The reason that this happens may be the same reason for http://bugzilla.slf4j.org/show_bug.cgi?id=138 in SLF4J.
 

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Issue Comment Edited: (LBCLASSIC-159) Invalid multiple configuration file warning

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Derek Mahar edited comment on LBCLASSIC-159 at 8/5/10 3:33 AM:
---------------------------------------------------------------

Changing the return value of method getResourceOccurenceCount(String, ClassLoader) from "List<URL>" to "Set<URL>" in class ch.qos.logback.core.util.Loader should resolve this issue:

  public static List<URL> getResourceOccurenceCount(String resource,
      ClassLoader classLoader) throws IOException {
    List<URL> urlList = new ArrayList<URL>();
    Enumeration<URL> urlEnum = classLoader.getResources(resource);
    while (urlEnum.hasMoreElements()) {
      URL url = urlEnum.nextElement();
      urlList.add(url);
    }

    return urlList;
  }

Method multiplicityWarning(String, ClassLoader) in class ch.qos.logback.classic.util.ContextInitializer uses this method to decide whether or not to print the multiple classpath entry warning:

  private void multiplicityWarning(String resourceName, ClassLoader classLoader) {
    List<URL> urlList = null;
    StatusManager sm = loggerContext.getStatusManager();
    try {
      urlList = Loader.getResourceOccurenceCount(resourceName, classLoader);
    } catch (IOException e) {
      sm.add(new ErrorStatus("Failed to get url list for resource [" + resourceName + "]",
              loggerContext, e));
    }
    if (urlList != null && urlList.size() > 1) {
      sm.add(new WarnStatus("Resource [" + resourceName + "] occurs multiple times on the classpath.",
              loggerContext));
      for (URL url : urlList) {
        sm.add(new WarnStatus("Resource [" + resourceName + "] occurs at [" + url.toString() + "]",
                loggerContext));
      }
    }
  }

Note that this is the state of the code as of release 0.9.24 (http://github.com/derekmahar/logback/tree/v_0.9.24 or commit http://github.com/ceki/logback/commit/10b6686ab92a53f860b14953ce8493d5c3534a46 ).

      was (Author: derekmahar):
    Changing the return value of method getResourceOccurenceCount(String, ClassLoader) from "List<URL>" to "Set<URL>" in class ch.qos.logback.core.util.Loader should resolve this issue:

  public static List<URL> getResourceOccurenceCount(String resource,
      ClassLoader classLoader) throws IOException {
    List<URL> urlList = new ArrayList<URL>();
    Enumeration<URL> urlEnum = classLoader.getResources(resource);
    while (urlEnum.hasMoreElements()) {
      URL url = urlEnum.nextElement();
      urlList.add(url);
    }

    return urlList;
  }

Method multiplicityWarning(String, ClassLoader) in class ch.qos.logback.classic.util.ContextInitializer uses this method to decide whether or not to print the multiple classpath entry warning:

  private void multiplicityWarning(String resourceName, ClassLoader classLoader) {
    List<URL> urlList = null;
    StatusManager sm = loggerContext.getStatusManager();
    try {
      urlList = Loader.getResourceOccurenceCount(resourceName, classLoader);
    } catch (IOException e) {
      sm.add(new ErrorStatus("Failed to get url list for resource [" + resourceName + "]",
              loggerContext, e));
    }
    if (urlList != null && urlList.size() > 1) {
      sm.add(new WarnStatus("Resource [" + resourceName + "] occurs multiple times on the classpath.",
              loggerContext));
      for (URL url : urlList) {
        sm.add(new WarnStatus("Resource [" + resourceName + "] occurs at [" + url.toString() + "]",
                loggerContext));
      }
    }
  }

(Note that this is the state of the code as of release 0.9.24 (http://github.com/derekmahar/logback/tree/v_0.9.24) or commit 10b6686ab92a53f860b14953ce8493d5c3534a46 (http://github.com/ceki/logback/commit/10b6686ab92a53f860b14953ce8493d5c3534a46 ).)
 

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Commented: (LBCLASSIC-159) Invalid multiple configuration file warning

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Peter  Johansson commented on LBCLASSIC-159:
--------------------------------------------

This bug is the only issue that disallows our company to use logback, please make Derek Mahars patch in to main master

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Logback dev list
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Assigned: (LBCLASSIC-159) Invalid multiple configuration file warning

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Ceki Gulcu reassigned LBCLASSIC-159:
------------------------------------

    Assignee: Ceki Gulcu  (was: Logback dev list)

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Ceki Gulcu
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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[JIRA] Resolved: (LBCLASSIC-159) Invalid multiple configuration file warning

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     [ http://jira.qos.ch/browse/LBCLASSIC-159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ceki Gulcu resolved LBCLASSIC-159.
----------------------------------

    Fix Version/s: 1.0.4
       Resolution: Fixed

Fixed in http://github.com/ceki/logback/commit/617c073bff211

> Invalid multiple configuration file warning
> -------------------------------------------
>
>                 Key: LBCLASSIC-159
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-159
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: 0.917
>         Environment: Resin webapp
>            Reporter: Hontvári József
>            Assignee: Ceki Gulcu
>             Fix For: 1.0.4
>
>
> I receive strange warnings in the status info. It says that logback.xml, which in this case comes from a file and not from the classpath, occurs multiple times. The file is specifies and logged using absolute path, so even relative paths cannot cause the warning.
> Logback configuration file is specified by the system property "logback.configurationFile". It is done by the Resin application server, somehow it is able to supply different properties for different web applications. I don't think this is important, however. Maybe I am doing something wrong, but at least the message doesn't help.  
> 20:36:34,236 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [file:/C:/Progra~1/mireka/conf/logback.xml] at [file:/C:/Progra~1/mireka/conf/logback.xml]  
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs multiple times on the classpath.              
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]
> 20:36:34,236 |-WARN in ch.qos.logback.classic.LoggerContext[default] - Resource [file:/C:/Progra~1/mireka/conf/logback.xml] occurs at [file:/C:/Progra~1/mireka/conf/logback.xml]

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