Servlet to trigger workflow

TriggerWorkflowServlet,java

// src: https://github.com/ani03sha/Technical-Interview-Preparation/blob/56ad166bd0fca7b97c72190415c86a8420a070a7/code/AEM/Workflows/Workflows/core/src/main/java/org/redquark/aem/workflow/TriggerWorkflowServlet.java
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.Servlet;

import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.servlets.HttpConstants;
import org.apache.sling.api.servlets.SlingSafeMethodsServlet;
import org.osgi.framework.Constants;
import org.osgi.service.component.annotations.Component;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.adobe.granite.workflow.WorkflowException;
import com.adobe.granite.workflow.WorkflowSession;
import com.adobe.granite.workflow.exec.WorkflowData;
import com.adobe.granite.workflow.model.WorkflowModel;

/**
 * @author Anirudh Sharma
 */
@Component(
		service = Servlet.class, 
		property = {
				Constants.SERVICE_DESCRIPTION + "=Trigger Worklow Servlet",
				"sling.servlet.methods=" + HttpConstants.METHOD_GET,
				"sling.servlet.paths="+ "/bin/triggerWorkflow",
		})
public class TriggerWorkflowServlet extends SlingSafeMethodsServlet {

	private static final long serialVersionUID = 8941987308066768388L;

	private final Logger log = LoggerFactory.getLogger(this.getClass());

	@Override
	protected void doGet(SlingHttpServletRequest request, SlingHttpServletResponse response) {

		try {
			final String payloadPath = "/content/we-retail/us/en/men";

			// Getting the resource resolver
			final ResourceResolver resolver = request.getResourceResolver();

			// Get the workflow session from the resource resolver
			final WorkflowSession workflowSession = resolver.adaptTo(WorkflowSession.class);

			// Workflow model path
			final String model = "/var/workflow/models/Sample_Workflow";

			// Get the workflow model object

			final WorkflowModel workflowModel = workflowSession.getModel(model);

			// Create a workflow Data (or Payload) object pointing to a resource via JCR
			// Path (alternatively, a JCR_UUID can be used)
			final WorkflowData workflowData = workflowSession.newWorkflowData("JCR_PATH", payloadPath);

			// Optionally pass in workflow metadata via a Map
			final Map<String, Object> workflowMetadata = new HashMap<>();
			workflowMetadata.put("anyData", "You Want");
			workflowMetadata.put("evenThingsLike", new Date());

			// Start the workflow!
			workflowSession.startWorkflow(workflowModel, workflowData, workflowMetadata);

			log.info("Workflow: {} started", model);

		} catch (WorkflowException e) {
			log.error(e.getMessage(), e);
		}
	}

}