Hi team I m trying to add a template extension and created a WireMock #help

Hi team, I'm trying to add a template extension an...

amar1104

08/12/2024, 9:05 AM

Hi team, I'm trying to add a template extension and created a jar out of it. The jar is added to the classpath of standalone jar and started the mock server. When I trigger that template helper, I'm seeing this error

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<title>Error 500 java.lang.AbstractMethodError: Receiver class com.example.template.SliceHandlebarHelper does not define or inherit an implementation of the resolved method &apos;abstract java.lang.Object apply(java.lang.Object, wiremock.com.github.jknack.handlebars.Options)&apos; of interface wiremock.com.github.jknack.handlebars.Helper.</title>

Is there anything that I need to do? The SliceHandlebarHelper already implements Helper. TIA

amar1104

08/12/2024, 9:06 AM

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public class SliceHandlebarHelper  extends HandlebarsHelper<Object> {

    @Override
    public Object apply(Object o, Options options) throws IOException {...

amar1104

08/12/2024, 9:12 AM

Attached pom.xml

pom.xml

Lee Turner

08/12/2024, 9:18 AM

It is a little tricky to help without seeing all the code of your helper. Are you importing the correct

Options

class for example.

Lee Turner

08/12/2024, 9:19 AM

Have you looked at the helpers in the WireMock code. Like the size helper for example - https://github.com/wiremock/wiremock/blob/master/src/main/java/com/github/tomakehurst/wiremock/extension/responsetemplating/helpers/SizeHelper.java

amar1104

08/12/2024, 9:23 AM

Yes, I am able to compile as well. After starting the wiremock, when using the helper I'm getting this issue

amar1104

08/12/2024, 9:28 AM

ExtensionFactory

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public class TemplateExtensionFactory implements ExtensionFactory {

    @Override
    public List<Extension> create(WireMockServices services) {
        return List.of(new ListTemplateHelperProviderExtension());
    }
}

TemplateHelperProviderExtension

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public class ListTemplateHelperProviderExtension implements TemplateHelperProviderExtension {

    private final Map<String, Helper<?>> listTemplateHelpers = new HashMap<>();

    public ListTemplateHelperProviderExtension() {
        listTemplateHelpers.put("slice", new SliceHandlebarHelper());
    }

    @Override
    public Map<String, Helper<?>> provideTemplateHelpers() {
        return listTemplateHelpers;
    }

    @Override
    public String getName() {
        return "list";
    }
}

SliceHandlebarHelper

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import com.github.jknack.handlebars.Options;
import com.github.tomakehurst.wiremock.extension.responsetemplating.helpers.HandlebarsHelper;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;

import static java.util.Collections.emptyList;

public class SliceHandlebarHelper  extends HandlebarsHelper<Object> {

    @Override
    public Object apply(Object o, Options options) throws IOException {
       ...
    }
}

Lee Turner

08/12/2024, 9:52 AM

Not really sure what the issue is. Does the jar you generate contain the WireMock and handlebars helpers dependencies?

amar1104

08/12/2024, 10:08 AM

I think I might have found the issue, in the error

implementation of the resolved method &apos;abstract java.lang.Object apply(java.lang.Object, <http://wiremock.com|wiremock.com>.github.jknack.handlebars.Options)

it is expecting wiremock.com.github.jknack.handlebars.Options instead of com.github.jknack.handlebars.Options . Gradle has relocate option

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shadowJar {
    relocate "com.github.jknack", 'wiremock.com.github.jknack'
}

looking for maven alternative.

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