Supressing/Setting Log Level

[Greg Harabedian]

I am new to HAPI and I was wondering how I set the log level and/or just suppress warning messages.  For example, I may get a message like the following when my software runs:

[main] WARN ca.uhn.fhir.parser.LenientErrorHandler - Found incorrect type for element identifier - Expected ARRAY and found OBJECT

I'd like to supress these warnings if possible.

[James Agnew]

Hi Greg,

You can find information how how logging works with HAPI here: http://hapifhir.io/doc_logging.html

You can basically configure logging in any way you want, including disabling specific loggers like the one you reference above.

Cheers,

James

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[Malcolm McRoberts]

Yes, I read this page, but still am not clear on how to change the log level for a specific class.  I want to  suppress all those INFO messages from the SearchBullder.  This looks like the way to do it, but not sure it's working.
logback.xml
<configuration scan="true" scanPeriod="30 seconds">

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>INFO</level>
        </filter>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} [%file:%line] %msg%n</pattern>
        </encoder>
    </appender>
        <logger name="ca.uhn.fhir.jpa.dao.SearchBuilder" level="DEBUG" />
    <root level="INFO">
        <appender-ref ref="STDOUT" />
    </root>

</configuration>

On Wednesday, September 27, 2017 at 5:29:28 PM UTC-4, James Agnew wrote:

Hi Greg,

You can find information how how logging works with HAPI here: http://hapifhir.io/doc_logging.html

You can basically configure logging in any way you want, including disabling specific loggers like the one you reference above.

Cheers,

James

On Wed, Sep 27, 2017 at 1:47 PM, Greg Harabedian <greg.ha...@gmail.com> wrote:

I am new to HAPI and I was wondering how I set the log level and/or just suppress warning messages.  For example, I may get a message like the following when my software runs:

[main] WARN ca.uhn.fhir.parser.LenientErrorHandler - Found incorrect type for element identifier - Expected ARRAY and found OBJECT

I'd like to supress these warnings if possible.

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[James Agnew]

Hi Malcolm,

It may be worth having a read through logback's documentation to see all of the power that is in there. It's quite a neat library actually: https://logback.qos.ch/manual/configuration.html

Specifically, if you want to suppress a specific logger and prevent it from showing up elsewhere, you would just need to declare the logger with no appenders and no additivity:

<logger name="ca.uhn.fhir.jpa.dao.SearchBuilder" level="ERROR" additivity="false" />

Cheers,

James

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[Greg Harabedian]

Looked there but it doesn't really tell you how to disable logging.  As far as logging libraries, I only have the slf4j-api and slf4j-simple libraries installed.  Any additional detailed information on how to disable or set the the log level would be appreciated.  It seems like you can't explicitly set a log level in slf4j.  However, this seems like the only log library I have installed.

Greg

On Wednesday, September 27, 2017 at 2:29:28 PM UTC-7, James Agnew wrote:

Hi Greg,

You can find information how how logging works with HAPI here: http://hapifhir.io/doc_logging.html

You can basically configure logging in any way you want, including disabling specific loggers like the one you reference above.

Cheers,

James

On Wed, Sep 27, 2017 at 1:47 PM, Greg Harabedian <greg.ha...@gmail.com> wrote:

I am new to HAPI and I was wondering how I set the log level and/or just suppress warning messages.  For example, I may get a message like the following when my software runs:

[main] WARN ca.uhn.fhir.parser.LenientErrorHandler - Found incorrect type for element identifier - Expected ARRAY and found OBJECT

I'd like to supress these warnings if possible.

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[James Agnew]

If you remove the slf4j-simple JAR, and add logback-classic.jar instead, you can include a logback.xml file which configures the output. Here's a fairly complex example of such a file, which has different outputs for different loggers: https://github.com/jamesagnew/hapi-fhir/blob/master/hapi-fhir-jpaserver-uhnfhirtest/src/main/resources/logback.xml

Cheers,

James

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[Greg Harabedian]

When I enable debug mode and execute the line:

FhirContext context = FhirContext.forDstu3();

where I had previously imported ca.uhn.fhir.context.FhirContext,

I get the console message:

[main] INFO ca.uhn.fhir.util.VersionUtil - HAPI FHIR version is: 2.5

[main] INFO ca.uhn.fhir.context.FhirContext - Creating new FHIR context for FHIR version [DSTU3]

The question is how do I supress this?

Greg

[James Agnew]

If you set those loggers (or just the root logger) to a level higher than INFO (WARN or ERROR) in your logback.xml, you won't see INFO level messages such as those ones.

Cheers,

James

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[Fran / Carl]

Hi!  I have same problem, I don't know how to supress this kind of log messages:

12:48:05.656 [ajp-nio-127.0.0.1-8009-exec-1]  DEBUG  ca.uhn.fhir.context.ModelScanner - Scanning datatype class: org.hl7.fhir.r4.model.UsageContext

12:48:05.656 [ajp-nio-127.0.0.1-8009-exec-1]  DEBUG  ca.uhn.fhir.context.ModelScanner - Scanning datatype class: org.hl7.fhir.r4.model.Reference

12:48:05.659 [ajp-nio-127.0.0.1-8009-exec-1]  DEBUG  ca.uhn.fhir.context.ModelScanner - Scanning resource class: org.hl7.fhir.r4.model.MarkdownType

How can I supress this?  I'm attaching my logback.xml and catalina.out file.   What I'm doing wrong?

Thanks in advance.

El martes, 10 de octubre de 2017 a la(s) 17:18:44 UTC-3, james...@gmail.com escribió:

If you set those loggers (or just the root logger) to a level higher than INFO (WARN or ERROR) in your logback.xml, you won't see INFO level messages such as those ones.

Cheers,

James

On Tue, Oct 10, 2017 at 2:57 PM, Greg Harabedian <greg.ha...@gmail.com> wrote:

When I enable debug mode and execute the line:

FhirContext context = FhirContext.forDstu3();

where I had previously imported ca.uhn.fhir.context.FhirContext,

I get the console message:

[main] INFO ca.uhn.fhir.util.VersionUtil - HAPI FHIR version is: 2.5

[main] INFO ca.uhn.fhir.context.FhirContext - Creating new FHIR context for FHIR version [DSTU3]

The question is how do I supress this?

Greg

On Wednesday, September 27, 2017 at 10:47:22 AM UTC-7, Greg Harabedian wrote:

I am new to HAPI and I was wondering how I set the log level and/or just suppress warning messages.  For example, I may get a message like the following when my software runs:

[main] WARN ca.uhn.fhir.parser.LenientErrorHandler - Found incorrect type for element identifier - Expected ARRAY and found OBJECT

I'd like to supress these warnings if possible.

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[Fran / Carl]

Sharing my problem and solution:  in my case,   logback.xml  file was in hapi-app/WEB-INF/  directory  instead of  hapi-app/WEB-INF/classes/  directory.  For this reason, all the configuration that was carried out in it was ignored. I just moved it to the right one directory. 

Now it's considering the configured appenders, loggers, etc.