PDF-Export Application Problem (Experimental PDF-Export with Docker)

jwielsch · August 23, 2022, 12:36pm

Thank you!

I’ve looked through the Docker Hub page and there it is: --disalbe-gpu is already set in the default entrypoint. So perhaps I have to enable it…

If I figure it out I let the community know what is going wrong here

jwielsch · August 23, 2022, 12:42pm

If the docker container runs on the same host as xwiki and xwiki is NOT itself in a container:

Install Docker
Add your tomcat-User (tomcat9?) to the docker group to allow starting and stopping a container
pull the image once (zenika/alpine-chrome:latest)
add the config from the extension page to xwiki.properties (as provided)
install the extension in the XWiki administration
Restart tomcat

If the docker container runs on the same host as xwiki and xwiki is itself in a container:

pull the image once (zenika/alpine-chrome:latest)
add the config from the extension page to xwiki.properties and
2.1 specify the host that the Chrome container can use to access XWiki. (IP or Name of the XWiki Container)
2.2 Set export.pdf.dockerNetwork=bridge to the network the xwiki-container is running in
install the extension
Restart the xwiki docker container

Does this help you?

(There is a third option where xwiki and headless-chrome docker container run on different machines. But for this please adapt the steps above and add ip addresses to the config )

vmassol · August 23, 2022, 12:47pm

Hi @TheBob , see PDF Export Application (XWiki.org) for the different requirements to get it working.

We’re planning to remove that default Docker requirement in the future so that it works OOB without any configuration change, and explaining to Admin users how to set it up using docker if they need that.

Note that this extension is currently experimental, see PDF Export Application (XWiki.org)

what post?

Thanks

vmassol · August 23, 2022, 12:48pm

you don’t need that, xwiki does it by itself in managed mode (the default mode).

vmassol · August 23, 2022, 12:49pm

you also don’t need that, unless you want to change the default config.

vmassol · August 23, 2022, 12:49pm

Only if you want to use the docker mode.

vmassol · August 23, 2022, 12:50pm

You shouldn’t need to do that either.

vmassol · August 23, 2022, 12:52pm

Basically all you need to do if you’re using the default mode (no config change) is what is described at PDF Export Application (XWiki.org)

jwielsch · August 23, 2022, 1:28pm

No Restart required after changing something in xwiki.properties?

jwielsch · August 23, 2022, 1:29pm

With “docker mode”: Do you mean server-side generation of the pdf?

jwielsch · August 23, 2022, 1:31pm

For an unknown reason it did not do the first pull. Starting and stopping works fine though.

vmassol · August 23, 2022, 1:32pm

The only reason I see to change xwiki.properties is if you don’t want to use the default mode.

vmassol · August 23, 2022, 1:33pm

I mean the mode that is not using docker, i.e. PDF Export Application (XWiki.org)

vmassol · August 23, 2022, 1:34pm

That’s weird and should be reported since it would be a bug. Maybe you could try again? Could it be that you didn’t let it enough time to do the pull and stopped xwiki before it could finish?

jwielsch · August 23, 2022, 1:56pm

Sure, i can try it again at the weekend. Good question. I can’t say if I have waited long enough

TheBob · August 24, 2022, 8:39am

Hello to you both,
I have tested both, with and without docker. One is installed on my Synology with docker and I test it like you described it @jwielsch. (everything internal Docker)
I test with changing xwiki.porperties or not and installing zenika/alpine-chrome:latest or not.
I get this error on Docker Versions:

cat log.xml 
<org.xwiki.logging.event.BeginLogEvent>
  <marker class="org.xwiki.logging.marker.BeginTranslationMarker">
    <name>job.log.beginWithId</name>
    <references class="linked-hash-set">
      <org.slf4j.helpers.BasicMarker>
        <name>xwiki.begin</name>
        <referenceList class="java.util.concurrent.CopyOnWriteArrayList" serialization="custom">
          <java.util.concurrent.CopyOnWriteArrayList>
            <default/>
            <int>0</int>
          </java.util.concurrent.CopyOnWriteArrayList>
        </referenceList>
      </org.slf4j.helpers.BasicMarker>
    </references>
    <translationKey>job.log.beginWithId</translationKey>
  </marker>
  <message>Starting job of type [{}] with identifier [{}]</message>
  <argumentArray>
    <string>export/pdf</string>
    <java.util.Arrays_-ArrayList>
      <a class="string-array">
        <string>export</string>
        <string>pdf</string>
        <string>1661329242452-786</string>
      </a>
    </java.util.Arrays_-ArrayList>
  </argumentArray>
  <level>INFO</level>
  <timeStamp>1661329242466</timeStamp>
</org.xwiki.logging.event.BeginLogEvent>
<org.xwiki.logging.event.LogEvent>
  <level>ERROR</level>
  <timeStamp>1661329252514</timeStamp>
  <message>Exception thrown during job execution</message>
  <marker class="org.xwiki.logging.marker.TranslationMarker">
    <name>xwiki.translation</name>
    <translationKey>job.log.exception</translationKey>
  </marker>
  <throwable class="java.lang.RuntimeException">
    <detailMessage>Failed to get [role = [org.xwiki.export.pdf.PDFPrinter&lt;java.net.URL&gt;] hint = [docker]]</detailMessage>
    <cause class="org.xwiki.component.manager.ComponentLookupException">
      <detailMessage>Failed to lookup component [org.xwiki.export.pdf.internal.docker.DockerPDFPrinter] identified by type [org.xwiki.export.pdf.PDFPrinter&lt;java.net.URL&gt;] and hint [docker]</detailMessage>
      <cause class="org.xwiki.component.phase.InitializationException">
        <detailMessage>Failed to initialize the Chrome remote debugging service.</detailMessage>
        <cause class="java.util.concurrent.TimeoutException">
          <detailMessage>Timeout waiting for Chrome remote debugging to become available. Waited [10] seconds.</detailMessage>
          <stackTrace>
            <trace>org.xwiki.export.pdf.internal.chrome.ChromeManager.waitForChromeService(ChromeManager.java:166)</trace>
            <trace>org.xwiki.export.pdf.internal.chrome.ChromeManager.connect(ChromeManager.java:136)</trace>
            <trace>org.xwiki.export.pdf.internal.docker.DockerPDFPrinter.initializeChromeService(DockerPDFPrinter.java:135)</trace>
            <trace>org.xwiki.export.pdf.internal.docker.DockerPDFPrinter.initialize(DockerPDFPrinter.java:95)</trace>
            <trace>org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39)</trace>
            <trace>org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:365)</trace>
            <trace>org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:451)</trace>
            <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:201)</trace>
            <trace>org.xwiki.component.embed.GenericProvider.getInstance(GenericProvider.java:111)</trace>
            <trace>org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:100)</trace>
            <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.saveAsPDF(PDFExportJob.java:162)</trace>
            <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.runInternal(PDFExportJob.java:115)</trace>
            <trace>org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:243)</trace>
            <trace>org.xwiki.job.AbstractJob.run(AbstractJob.java:220)</trace>
            <trace>java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)</trace>
            <trace>java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</trace>
            <trace>java.base/java.lang.Thread.run(Unknown Source)</trace>
          </stackTrace>
        </cause>
        <stackTrace>
          <trace>org.xwiki.export.pdf.internal.docker.DockerPDFPrinter.initializeChromeService(DockerPDFPrinter.java:137)</trace>
          <trace>org.xwiki.export.pdf.internal.docker.DockerPDFPrinter.initialize(DockerPDFPrinter.java:95)</trace>
          <trace>org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39)</trace>
          <trace>org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:365)</trace>
          <trace>org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:451)</trace>
          <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:201)</trace>
          <trace>org.xwiki.component.embed.GenericProvider.getInstance(GenericProvider.java:111)</trace>
          <trace>org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:100)</trace>
          <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.saveAsPDF(PDFExportJob.java:162)</trace>
          <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.runInternal(PDFExportJob.java:115)</trace>
          <trace>org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:243)</trace>
          <trace>org.xwiki.job.AbstractJob.run(AbstractJob.java:220)</trace>
          <trace>java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)</trace>
          <trace>java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</trace>
          <trace>java.base/java.lang.Thread.run(Unknown Source)</trace>
        </stackTrace>
      </cause>
      <stackTrace>
        <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:204)</trace>
        <trace>org.xwiki.component.embed.GenericProvider.getInstance(GenericProvider.java:111)</trace>
        <trace>org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:100)</trace>
        <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.saveAsPDF(PDFExportJob.java:162)</trace>
        <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.runInternal(PDFExportJob.java:115)</trace>
        <trace>org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:243)</trace>
        <trace>org.xwiki.job.AbstractJob.run(AbstractJob.java:220)</trace>
        <trace>java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)</trace>
        <trace>java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</trace>
        <trace>java.base/java.lang.Thread.run(Unknown Source)</trace>
      </stackTrace>
    </cause>
    <stackTrace>
      <trace>org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:103)</trace>
      <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.saveAsPDF(PDFExportJob.java:162)</trace>
      <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.runInternal(PDFExportJob.java:115)</trace>
      <trace>org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:243)</trace>
      <trace>org.xwiki.job.AbstractJob.run(AbstractJob.java:220)</trace>
      <trace>java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)</trace>
      <trace>java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</trace>
      <trace>java.base/java.lang.Thread.run(Unknown Source)</trace>
    </stackTrace>
  </throwable>
</org.xwiki.logging.event.LogEvent>
<org.xwiki.logging.event.EndLogEvent>
  <marker class="org.xwiki.logging.marker.EndTranslationMarker">
    <name>job.log.endWithId</name>
    <references class="linked-hash-set">
      <org.slf4j.helpers.BasicMarker>
        <name>xwiki.end</name>
        <referenceList class="java.util.concurrent.CopyOnWriteArrayList" serialization="custom">
          <java.util.concurrent.CopyOnWriteArrayList>
            <default/>
            <int>0</int>
          </java.util.concurrent.CopyOnWriteArrayList>
        </referenceList>
      </org.slf4j.helpers.BasicMarker>
    </references>
    <translationKey>job.log.endWithId</translationKey>
  </marker>
  <message>Finished job of type [{}] with identifier [{}]</message>
  <argumentArray>
    <string>export/pdf</string>
    <java.util.Arrays_-ArrayList>
      <a class="string-array">
        <string>export</string>
        <string>pdf</string>
        <string>1661329242452-786</string>
      </a>
    </java.util.Arrays_-ArrayList>
  </argumentArray>
  <level>INFO</level>
  <timeStamp>1661329252520</timeStamp>
</org.xwiki.logging.event.EndLogEvent>

And the other test is under Ubuntu 20.04 without docker I described in my early post: PDF Template - Content of Page based on encyclopaedia

I know that it is experimental, and I would like to test it to help you.
I can wait for a new version and test it again.

Many thanks in advance
TheBob

vmassol · August 24, 2022, 11:52am

This is the root cause but we need to understand why. I’ve added some debug logs for XWiki 14.7+: [Misc] Add debug information to better understand the timeout cause · xwiki/xwiki-platform@7f27e56 · GitHub

I haven’t worked on this code and @mflorea is the best person to help on this. It could be a bug that would need reporting in jira.

TheBob · August 30, 2022, 1:55pm

Hello @all,
I have installed now latest xwiki:14.7-postgres-tomcat on my synology docker with latest pdf export. Nothing else no config change, no installation of zenika/alpine-chrome:latest.

This is the last Log:

cat log.xml 
<org.xwiki.logging.event.BeginLogEvent>
  <marker class="org.xwiki.logging.marker.BeginTranslationMarker">
    <name>job.log.beginWithId</name>
    <references class="linked-hash-set">
      <org.slf4j.helpers.BasicMarker>
        <name>xwiki.begin</name>
        <referenceList class="java.util.concurrent.CopyOnWriteArrayList" serialization="custom">
          <java.util.concurrent.CopyOnWriteArrayList>
            <default/>
            <int>0</int>
          </java.util.concurrent.CopyOnWriteArrayList>
        </referenceList>
      </org.slf4j.helpers.BasicMarker>
    </references>
    <translationKey>job.log.beginWithId</translationKey>
  </marker>
  <message>Starting job of type [{}] with identifier [{}]</message>
  <argumentArray>
    <string>export/pdf</string>
    <java.util.Arrays_-ArrayList>
      <a class="string-array">
        <string>export</string>
        <string>pdf</string>
        <string>1661867067533-585</string>
      </a>
    </java.util.Arrays_-ArrayList>
  </argumentArray>
  <level>INFO</level>
  <timeStamp>1661867067960</timeStamp>
</org.xwiki.logging.event.BeginLogEvent>
<org.xwiki.logging.event.LogEvent>
  <level>ERROR</level>
  <timeStamp>1661867071260</timeStamp>
  <message>Exception thrown during job execution</message>
  <marker class="org.xwiki.logging.marker.TranslationMarker">
    <name>xwiki.translation</name>
    <translationKey>job.log.exception</translationKey>
  </marker>
  <throwable class="java.lang.RuntimeException">
    <detailMessage>Failed to get [role = [org.xwiki.export.pdf.PDFPrinter&lt;java.net.URL&gt;] hint = [chrome]]</detailMessage>
    <cause class="org.xwiki.component.manager.ComponentLookupException">
      <detailMessage>Failed to lookup component [org.xwiki.export.pdf.internal.chrome.ChromePDFPrinter] identified by type [org.xwiki.export.pdf.PDFPrinter&lt;java.net.URL&gt;] and hint [chrome]</detailMessage>
      <cause class="org.xwiki.component.manager.ComponentLookupException">
        <detailMessage>Failed to lookup component [org.xwiki.export.pdf.internal.chrome.ChromeManagerProvider] identified by type [javax.inject.Provider&lt;org.xwiki.export.pdf.internal.chrome.ChromeManager&gt;] and hint [default]</detailMessage>
        <cause class="org.xwiki.component.phase.InitializationException">
          <detailMessage>Failed to initialize the Docker container for the PDF export.</detailMessage>
          <cause class="java.lang.RuntimeException">
            <detailMessage>java.io.IOException: com.sun.jna.LastErrorException: [2] No such file or directory</detailMessage>
            <cause class="java.io.IOException">
              <detailMessage>com.sun.jna.LastErrorException: [2] No such file or directory</detailMessage>
              <cause class="com.sun.jna.LastErrorException">
                <detailMessage>[2] No such file or directory</detailMessage>
                <stackTrace>
                  <trace>com.github.dockerjava.transport.LinuxDomainSocket.connect(Native Method)</trace>
                  <trace>com.github.dockerjava.transport.LinuxDomainSocket.connect(LinuxDomainSocket.java:49)</trace>
                  <trace>com.github.dockerjava.transport.DomainSocket.open(DomainSocket.java:69)</trace>
                  <trace>com.github.dockerjava.transport.DomainSocket.&lt;init&gt;(DomainSocket.java:59)</trace>
                  <trace>com.github.dockerjava.transport.LinuxDomainSocket.&lt;init&gt;(LinuxDomainSocket.java:41)</trace>
                  <trace>com.github.dockerjava.transport.DomainSocket.get(DomainSocket.java:140)</trace>
                  <trace>com.github.dockerjava.transport.UnixSocket.get(UnixSocket.java:29)</trace>
                  <trace>com.github.dockerjava.httpclient5.ApacheDockerHttpClientImpl$2.createSocket(ApacheDockerHttpClientImpl.java:153)</trace>
                  <trace>org.apache.hc.client5.http.impl.io.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:125)</trace>
                  <trace>org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:396)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.InternalExecRuntime.connectEndpoint(InternalExecRuntime.java:158)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.InternalExecRuntime.connectEndpoint(InternalExecRuntime.java:168)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ConnectExec.execute(ConnectExec.java:136)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ProtocolExec.execute(ProtocolExec.java:175)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.HttpRequestRetryExec.execute(HttpRequestRetryExec.java:96)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ContentCompressionExec.execute(ContentCompressionExec.java:133)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.RedirectExec.execute(RedirectExec.java:115)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.InternalHttpClient.doExecute(InternalHttpClient.java:170)</trace>
                  <trace>org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:67)</trace>
                  <trace>com.github.dockerjava.httpclient5.ApacheDockerHttpClientImpl.execute(ApacheDockerHttpClientImpl.java:191)</trace>
                  <trace>com.github.dockerjava.httpclient5.ApacheDockerHttpClient.execute(ApacheDockerHttpClient.java:9)</trace>
                  <trace>com.github.dockerjava.core.DefaultInvocationBuilder.execute(DefaultInvocationBuilder.java:228)</trace>
                  <trace>com.github.dockerjava.core.DefaultInvocationBuilder.get(DefaultInvocationBuilder.java:202)</trace>
                  <trace>com.github.dockerjava.core.DefaultInvocationBuilder.get(DefaultInvocationBuilder.java:74)</trace>
                  <trace>com.github.dockerjava.core.exec.ListContainersCmdExec.execute(ListContainersCmdExec.java:44)</trace>
                  <trace>com.github.dockerjava.core.exec.ListContainersCmdExec.execute(ListContainersCmdExec.java:15)</trace>
                  <trace>com.github.dockerjava.core.exec.AbstrSyncDockerCmdExec.exec(AbstrSyncDockerCmdExec.java:21)</trace>
                  <trace>com.github.dockerjava.core.command.AbstrDockerCmd.exec(AbstrDockerCmd.java:35)</trace>
                  <trace>org.xwiki.export.pdf.internal.docker.ContainerManager.exec(ContainerManager.java:303)</trace>
                  <trace>org.xwiki.export.pdf.internal.docker.ContainerManager.maybeReuseContainerByName(ContainerManager.java:95)</trace>
                  <trace>org.xwiki.export.pdf.internal.chrome.ChromeManagerProvider.initializeChromeDockerContainer(ChromeManagerProvider.java:88)</trace>
                  <trace>org.xwiki.export.pdf.internal.chrome.ChromeManagerProvider.initialize(ChromeManagerProvider.java:75)</trace>
                  <trace>org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39)</trace>
                  <trace>org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:365)</trace>
                  <trace>org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:451)</trace>
                  <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:201)</trace>
                  <trace>org.xwiki.component.embed.EmbeddableComponentManager.getDependencyInstance(EmbeddableComponentManager.java:399)</trace>
                  <trace>org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:355)</trace>
                  <trace>org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:451)</trace>
                  <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:201)</trace>
                  <trace>org.xwiki.component.embed.GenericProvider.getInstance(GenericProvider.java:111)</trace>
                  <trace>org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:100)</trace>
                  <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.saveAsPDF(PDFExportJob.java:162)</trace>
                  <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.runInternal(PDFExportJob.java:115)</trace>
                  <trace>org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:246)</trace>
                  <trace>org.xwiki.job.AbstractJob.run(AbstractJob.java:223)</trace>
                  <trace>java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)</trace>
                  <trace>java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</trace>
                  <trace>java.base/java.lang.Thread.run(Unknown Source)</trace>
                </stackTrace>
              </cause>
              <stackTrace>
                <trace>com.github.dockerjava.transport.DomainSocket.&lt;init&gt;(DomainSocket.java:63)</trace>
                <trace>com.github.dockerjava.transport.LinuxDomainSocket.&lt;init&gt;(LinuxDomainSocket.java:41)</trace>
                <trace>com.github.dockerjava.transport.DomainSocket.get(DomainSocket.java:140)</trace>
                <trace>com.github.dockerjava.transport.UnixSocket.get(UnixSocket.java:29)</trace>
                <trace>com.github.dockerjava.httpclient5.ApacheDockerHttpClientImpl$2.createSocket(ApacheDockerHttpClientImpl.java:153)</trace>
                <trace>org.apache.hc.client5.http.impl.io.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:125)</trace>
                <trace>org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:396)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.InternalExecRuntime.connectEndpoint(InternalExecRuntime.java:158)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.InternalExecRuntime.connectEndpoint(InternalExecRuntime.java:168)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ConnectExec.execute(ConnectExec.java:136)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ProtocolExec.execute(ProtocolExec.java:175)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.HttpRequestRetryExec.execute(HttpRequestRetryExec.java:96)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ContentCompressionExec.execute(ContentCompressionExec.java:133)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.RedirectExec.execute(RedirectExec.java:115)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.InternalHttpClient.doExecute(InternalHttpClient.java:170)</trace>
                <trace>org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:67)</trace>
                <trace>com.github.dockerjava.httpclient5.ApacheDockerHttpClientImpl.execute(ApacheDockerHttpClientImpl.java:191)</trace>
                <trace>com.github.dockerjava.httpclient5.ApacheDockerHttpClient.execute(ApacheDockerHttpClient.java:9)</trace>
                <trace>com.github.dockerjava.core.DefaultInvocationBuilder.execute(DefaultInvocationBuilder.java:228)</trace>
                <trace>com.github.dockerjava.core.DefaultInvocationBuilder.get(DefaultInvocationBuilder.java:202)</trace>
                <trace>com.github.dockerjava.core.DefaultInvocationBuilder.get(DefaultInvocationBuilder.java:74)</trace>
                <trace>com.github.dockerjava.core.exec.ListContainersCmdExec.execute(ListContainersCmdExec.java:44)</trace>
                <trace>com.github.dockerjava.core.exec.ListContainersCmdExec.execute(ListContainersCmdExec.java:15)</trace>
                <trace>com.github.dockerjava.core.exec.AbstrSyncDockerCmdExec.exec(AbstrSyncDockerCmdExec.java:21)</trace>
                <trace>com.github.dockerjava.core.command.AbstrDockerCmd.exec(AbstrDockerCmd.java:35)</trace>
                <trace>org.xwiki.export.pdf.internal.docker.ContainerManager.exec(ContainerManager.java:303)</trace>
                <trace>org.xwiki.export.pdf.internal.docker.ContainerManager.maybeReuseContainerByName(ContainerManager.java:95)</trace>
                <trace>org.xwiki.export.pdf.internal.chrome.ChromeManagerProvider.initializeChromeDockerContainer(ChromeManagerProvider.java:88)</trace>
                <trace>org.xwiki.export.pdf.internal.chrome.ChromeManagerProvider.initialize(ChromeManagerProvider.java:75)</trace>
                <trace>org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39)</trace>
                <trace>org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:365)</trace>
                <trace>org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:451)</trace>
                <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:201)</trace>
                <trace>org.xwiki.component.embed.EmbeddableComponentManager.getDependencyInstance(EmbeddableComponentManager.java:399)</trace>
                <trace>org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:355)</trace>
                <trace>org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:451)</trace>
                <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:201)</trace>
                <trace>org.xwiki.component.embed.GenericProvider.getInstance(GenericProvider.java:111)</trace>
                <trace>org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:100)</trace>
                <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.saveAsPDF(PDFExportJob.java:162)</trace>
                <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.runInternal(PDFExportJob.java:115)</trace>
                <trace>org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:246)</trace>
                <trace>org.xwiki.job.AbstractJob.run(AbstractJob.java:223)</trace>
                <trace>java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)</trace>
                <trace>java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</trace>
                <trace>java.base/java.lang.Thread.run(Unknown Source)</trace>
              </stackTrace>
            </cause>
            <stackTrace>
              <trace>com.github.dockerjava.httpclient5.ApacheDockerHttpClientImpl.execute(ApacheDockerHttpClientImpl.java:195)</trace>
              <trace>com.github.dockerjava.httpclient5.ApacheDockerHttpClient.execute(ApacheDockerHttpClient.java:9)</trace>
              <trace>com.github.dockerjava.core.DefaultInvocationBuilder.execute(DefaultInvocationBuilder.java:228)</trace>
              <trace>com.github.dockerjava.core.DefaultInvocationBuilder.get(DefaultInvocationBuilder.java:202)</trace>
              <trace>com.github.dockerjava.core.DefaultInvocationBuilder.get(DefaultInvocationBuilder.java:74)</trace>
              <trace>com.github.dockerjava.core.exec.ListContainersCmdExec.execute(ListContainersCmdExec.java:44)</trace>
              <trace>com.github.dockerjava.core.exec.ListContainersCmdExec.execute(ListContainersCmdExec.java:15)</trace>
              <trace>com.github.dockerjava.core.exec.AbstrSyncDockerCmdExec.exec(AbstrSyncDockerCmdExec.java:21)</trace>
              <trace>com.github.dockerjava.core.command.AbstrDockerCmd.exec(AbstrDockerCmd.java:35)</trace>
              <trace>org.xwiki.export.pdf.internal.docker.ContainerManager.exec(ContainerManager.java:303)</trace>
              <trace>org.xwiki.export.pdf.internal.docker.ContainerManager.maybeReuseContainerByName(ContainerManager.java:95)</trace>
              <trace>org.xwiki.export.pdf.internal.chrome.ChromeManagerProvider.initializeChromeDockerContainer(ChromeManagerProvider.java:88)</trace>
              <trace>org.xwiki.export.pdf.internal.chrome.ChromeManagerProvider.initialize(ChromeManagerProvider.java:75)</trace>
              <trace>org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39)</trace>
              <trace>org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:365)</trace>
              <trace>org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:451)</trace>
              <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:201)</trace>
              <trace>org.xwiki.component.embed.EmbeddableComponentManager.getDependencyInstance(EmbeddableComponentManager.java:399)</trace>
              <trace>org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:355)</trace>
              <trace>org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:451)</trace>
              <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:201)</trace>
              <trace>org.xwiki.component.embed.GenericProvider.getInstance(GenericProvider.java:111)</trace>
              <trace>org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:100)</trace>
              <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.saveAsPDF(PDFExportJob.java:162)</trace>
              <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.runInternal(PDFExportJob.java:115)</trace>
              <trace>org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:246)</trace>
              <trace>org.xwiki.job.AbstractJob.run(AbstractJob.java:223)</trace>
              <trace>java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)</trace>
              <trace>java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</trace>
              <trace>java.base/java.lang.Thread.run(Unknown Source)</trace>
            </stackTrace>
          </cause>
          <stackTrace>
            <trace>org.xwiki.export.pdf.internal.chrome.ChromeManagerProvider.initializeChromeDockerContainer(ChromeManagerProvider.java:127)</trace>
            <trace>org.xwiki.export.pdf.internal.chrome.ChromeManagerProvider.initialize(ChromeManagerProvider.java:75)</trace>
            <trace>org.xwiki.component.embed.InitializableLifecycleHandler.handle(InitializableLifecycleHandler.java:39)</trace>
            <trace>org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:365)</trace>
            <trace>org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:451)</trace>
            <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:201)</trace>
            <trace>org.xwiki.component.embed.EmbeddableComponentManager.getDependencyInstance(EmbeddableComponentManager.java:399)</trace>
            <trace>org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:355)</trace>
            <trace>org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:451)</trace>
            <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:201)</trace>
            <trace>org.xwiki.component.embed.GenericProvider.getInstance(GenericProvider.java:111)</trace>
            <trace>org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:100)</trace>
            <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.saveAsPDF(PDFExportJob.java:162)</trace>
            <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.runInternal(PDFExportJob.java:115)</trace>
            <trace>org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:246)</trace>
            <trace>org.xwiki.job.AbstractJob.run(AbstractJob.java:223)</trace>
            <trace>java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)</trace>
            <trace>java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</trace>
            <trace>java.base/java.lang.Thread.run(Unknown Source)</trace>
          </stackTrace>
        </cause>
        <stackTrace>
          <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:204)</trace>
          <trace>org.xwiki.component.embed.EmbeddableComponentManager.getDependencyInstance(EmbeddableComponentManager.java:399)</trace>
          <trace>org.xwiki.component.embed.EmbeddableComponentManager.createInstance(EmbeddableComponentManager.java:355)</trace>
          <trace>org.xwiki.component.embed.EmbeddableComponentManager.getComponentInstance(EmbeddableComponentManager.java:451)</trace>
          <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:201)</trace>
          <trace>org.xwiki.component.embed.GenericProvider.getInstance(GenericProvider.java:111)</trace>
          <trace>org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:100)</trace>
          <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.saveAsPDF(PDFExportJob.java:162)</trace>
          <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.runInternal(PDFExportJob.java:115)</trace>
          <trace>org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:246)</trace>
          <trace>org.xwiki.job.AbstractJob.run(AbstractJob.java:223)</trace>
          <trace>java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)</trace>
          <trace>java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</trace>
          <trace>java.base/java.lang.Thread.run(Unknown Source)</trace>
        </stackTrace>
      </cause>
      <stackTrace>
        <trace>org.xwiki.component.embed.EmbeddableComponentManager.getInstance(EmbeddableComponentManager.java:204)</trace>
        <trace>org.xwiki.component.embed.GenericProvider.getInstance(GenericProvider.java:111)</trace>
        <trace>org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:100)</trace>
        <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.saveAsPDF(PDFExportJob.java:162)</trace>
        <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.runInternal(PDFExportJob.java:115)</trace>
        <trace>org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:246)</trace>
        <trace>org.xwiki.job.AbstractJob.run(AbstractJob.java:223)</trace>
        <trace>java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)</trace>
        <trace>java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</trace>
        <trace>java.base/java.lang.Thread.run(Unknown Source)</trace>
      </stackTrace>
    </cause>
    <stackTrace>
      <trace>org.xwiki.component.embed.GenericProvider.get(GenericProvider.java:103)</trace>
      <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.saveAsPDF(PDFExportJob.java:162)</trace>
      <trace>org.xwiki.export.pdf.internal.job.PDFExportJob.runInternal(PDFExportJob.java:115)</trace>
      <trace>org.xwiki.job.AbstractJob.runInContext(AbstractJob.java:246)</trace>
      <trace>org.xwiki.job.AbstractJob.run(AbstractJob.java:223)</trace>
      <trace>java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)</trace>
      <trace>java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)</trace>
      <trace>java.base/java.lang.Thread.run(Unknown Source)</trace>
    </stackTrace>
  </throwable>
</org.xwiki.logging.event.LogEvent>
<org.xwiki.logging.event.EndLogEvent>
  <marker class="org.xwiki.logging.marker.EndTranslationMarker">
    <name>job.log.endWithId</name>
    <references class="linked-hash-set">
      <org.slf4j.helpers.BasicMarker>
        <name>xwiki.end</name>
        <referenceList class="java.util.concurrent.CopyOnWriteArrayList" serialization="custom">
          <java.util.concurrent.CopyOnWriteArrayList>
            <default/>
            <int>0</int>
          </java.util.concurrent.CopyOnWriteArrayList>
        </referenceList>
      </org.slf4j.helpers.BasicMarker>
    </references>
    <translationKey>job.log.endWithId</translationKey>
  </marker>
  <message>Finished job of type [{}] with identifier [{}]</message>
  <argumentArray>
    <string>export/pdf</string>
    <java.util.Arrays_-ArrayList>
      <a class="string-array">
        <string>export</string>
        <string>pdf</string>
        <string>1661867067533-585</string>
      </a>
    </java.util.Arrays_-ArrayList>
  </argumentArray>
  <level>INFO</level>
  <timeStamp>1661867071278</timeStamp>
</org.xwiki.logging.event.EndLogEvent>

Many thanks in advanc
TheBob

mflorea · August 31, 2022, 8:41am

This usually means that the user running XWiki (tomcat user in your case) is not allowed to access the Docker socket, which means XWiki can’t communicate with Docker. The solution is usually to add the tomcat user to the docker group, as @jwielsch mentioned above:

mflorea · August 31, 2022, 8:48am

This usually means that XWiki cannot communicate with the headless Chrome web browser (running inside a Docker container), most probably because the IP / host used by XWiki to access Chrome is wrong. The fix depends on your setup:

if XWiki runs itself inside a Docker container then you need to define a Docker network and tell XWiki to use it, as per PDF Export Application (XWiki.org)
if XWiki doesn’t run in Docker but on the same host as the Docker daemon, then it should work out of the box, unless you hit [XWIKI-19922] Docker-based PDF Export doesn't work if the XWiki server runs on Windows - XWiki.org JIRA or [XWIKI-20005] Failed to export to PDF on Mac M1 - XWiki.org JIRA that have been fixed in 14.7