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# help

Slackbot

11/20/2023, 2:44 PM

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Dirk Bolte

11/20/2023, 2:59 PM

maybe a starting point: there's an initial version of an extension template which might give you a head start for building your own extension. https://github.com/wiremock/wiremock-extension-template . It's not much yet but should provide the basics for building your own.

Lucian Crasovan

11/20/2023, 3:07 PM

Many thanks for your quick reply!

Lucian Crasovan

11/21/2023, 2:30 PM

I was trying to use the template extension as is but I did not manage to do it. Could you please let me know how to produce the extension jar (in the template repo) and how to use it further with the wiremock standalone jar?

Lucian Crasovan

11/21/2023, 2:31 PM

I was running:

./gradlew jar shadowJar

Lucian Crasovan

11/21/2023, 2:32 PM

it generated 2 jars for me but cannot use any of them

Dirk Bolte

11/21/2023, 2:37 PM

./gradlew build

is sufficient to create both jars - but the result should be the same as with your command.

Dirk Bolte

11/21/2023, 2:37 PM

what error do you get?

Dirk Bolte

11/21/2023, 2:50 PM

The extension had a wrong class in the services configuration. Pushed a fix - hope it works but I can’t verify it right now (on the road). Can you recheck it? You need to use the standalone jar

Lucian Crasovan

11/21/2023, 3:45 PM

I was able to launch it like that: java -jar wiremock-standalone-3.3.1.jar wiremock-extension-template-standalone-b0fa13d.jar

👍 1

Lucian Crasovan

11/22/2023, 8:39 AM

but ... unfortunately I do not get the new extension loaded 😞 . It only shows response-template and webhook as extensions:

Dirk Bolte

11/22/2023, 8:48 AM

I didn't see your extension on the command line. Every standalone jar of every extension needs to be on the classpath to be discovered. For automatic discovery, you need to adapt

com.github.tomakehurst.wiremock.extension.ExtensionFactory

to point to the correct class . The class should look somewhat similar to

src/main/java/org/wiremock/extensions/template/StandaloneTemplateExtension.java

in the template extension

Lucian Crasovan

11/22/2023, 10:43 AM

To start with, I just would like to use the wiremock-extension-template as is, without modifying/adapting it. Is it possible? Could you please send me the command to launch it?

Dirk Bolte

11/22/2023, 12:21 PM

the lib has to be in the classpath. As POC, I copied all in one directoy and called:

java -cp "wiremock-extension-template-standalone-b0fa13d.dirty.jar:wiremock-standalone-3.3.1.jar" wiremock.Run

Lucian Crasovan

11/22/2023, 12:49 PM

Many thanks, that's what was I was looking for!!!!

Lucian Crasovan

11/22/2023, 12:53 PM

When you say the lib has to be in the class path, you mean the actual lib folder has to be copied there? I have the two jars in the same folder and launch your command, without dirty (java -cp "wiremock-extension-template-standalone-b0fa13d.jar:wiremock-standalone-3.3.1.jar" wiremock.Run). I am getting this error:

Copy code

Exception in thread "main" java.util.ServiceConfigurationError: com.github.tomakehurst.wiremock.extension.ExtensionFactory: Provider org.wiremock.extensions.state.StandaloneStateExtension not found
	at java.base/java.util.ServiceLoader.fail(ServiceLoader.java:593)
	at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.nextProviderClass(ServiceLoader.java:1219)
	at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNextService(ServiceLoader.java:1228)
	at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNext(ServiceLoader.java:1273)
	at java.base/java.util.ServiceLoader$2.hasNext(ServiceLoader.java:1309)
	at java.base/java.util.ServiceLoader$ProviderSpliterator.tryAdvance(ServiceLoader.java:1491)
	at java.base/java.util.Spliterator.forEachRemaining(Spliterator.java:332)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:310)
	at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
	at com.github.tomakehurst.wiremock.extension.Extensions.load(Extensions.java:98)
	at com.github.tomakehurst.wiremock.core.WireMockApp.<init>(WireMockApp.java:93)
	at com.github.tomakehurst.wiremock.WireMockServer.<init>(WireMockServer.java:71)
	at com.github.tomakehurst.wiremock.standalone.WireMockServerRunner.run(WireMockServerRunner.java:70)
	at wiremock.Run.main(Run.java:23)

Dirk Bolte

11/22/2023, 12:58 PM

in the example above, I added the libraries to the classpath via the

-cp

parameter. There can be other ways but that is outside of the wiremock context. Some extensions (like the tempalte) provide auto discovery mechanisms and in order to make them work, they have to be available on the classpath. The setup for docker or junit would be be different though - depends on what you need.

Dirk Bolte

11/22/2023, 1:01 PM

the error you see is probably because you miss a

git pull

. Had a bug

com.github.tomakehurst.wiremock.extension.ExtensionFactory

(the one I mentioned in https://wiremock-community.slack.com/archives/C03N1E6HFPY/p1700578257529539?thread_ts=1700491499.356719&cid=C03N1E6HFPY ) . Or you need to clean your libs directory and rebuild it

Lucian Crasovan

11/22/2023, 2:37 PM

Oh, I see now, many thanks! It indeed works as expected!!!! Have a nice day and thanks for all your support!

👍 1

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