Custom Extension Wiremock

ResponseArrayTransformer.java

package cl.scotiabank.ms.signers.wiremock;

import java.nio.charset.StandardCharsets;

import com.github.tomakehurst.wiremock.client.ResponseDefinitionBuilder;
import com.github.tomakehurst.wiremock.common.BinaryFile;
import com.github.tomakehurst.wiremock.common.FileSource;
import com.github.tomakehurst.wiremock.extension.Parameters;
import com.github.tomakehurst.wiremock.extension.ResponseDefinitionTransformer;
import com.github.tomakehurst.wiremock.http.Request;
import com.github.tomakehurst.wiremock.http.ResponseDefinition;

public class ResponseArrayTransformer extends ResponseDefinitionTransformer {

	private static final String TRANSFORMER_NAME = "response-array";

	@Override
	public String getName() {
		return TRANSFORMER_NAME;
	}
	
	@Override
    public boolean applyGlobally() {
        // by default all wiremock extension are globally, if not you must specify in transformer field
        return Boolean.FALSE;
    }

	@Override
	public ResponseDefinition transform(Request request, ResponseDefinition responseDefinition, FileSource files,
			Parameters parameters) {
		if (hasEmptyResponseBody(responseDefinition)) {
            return responseDefinition;
        }
		String responseBody = getResponseBody(responseDefinition, files);
		// Create response by matching request map and response body parametrized values
        return ResponseDefinitionBuilder
            .like(responseDefinition).but()
            .withBodyFile(null)
            // responseBody you can change it for something
            .withBody(responseBody)
            .build();
	}
	
	private String getResponseBody(ResponseDefinition responseDefinition, FileSource fileSource) {
        String body;
        if (responseDefinition.getBody() != null) {
            body = responseDefinition.getBody();
        } else {
            BinaryFile binaryFile = fileSource.getBinaryFileNamed(responseDefinition.getBodyFileName());
            body = new String(binaryFile.readContents(), StandardCharsets.UTF_8);
        }
        return body;
    }
	
	private boolean hasEmptyResponseBody(ResponseDefinition responseDefinition) {
        return responseDefinition.getBody() == null && responseDefinition.getBodyFileName() == null;
    }
	
}

I am saving my code for another project, It needs javadoc and a light refactoring