Applies to:
Experience Manager 6.2 Forms
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- 6.2
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An adaptive form can have an associated Submit action that triggers when you submit the form. In addition, you can trigger an AEM Workflow on the submitted data.
Consider a scenario where you associate Store Content (deprecated) as the Submit action for an adaptive form. The action creates a node (sling:Folder) that contains the data you submit.
Perform the following steps to trigger an AEM workflow that reads data from the payload you submit. In addition, the workflow fetches your name and email address and sends you an email confirming your data submission.
Create an XML schema-based Adaptive Form with the fields Enter User Name and Email id for user name and email retrieval, respectively. Click here to download the package with XML Schema-based Adaptive Form.
For details around creating OSGI bundles, see Creating OSGi bundles for the Adobe Digital Marketing Suite using CRXDE.
package com.adobe.aemds.aemworkflow;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.StringWriter;
import java.util.*;
import javax.jcr.Node;
import javax.jcr.Session;
import javax.mail.Header;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.InternetHeaders;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathFactory;
import com.day.cq.workflow.exec.WorkflowProcess;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.text.StrSubstitutor;
import org.apache.commons.mail.HtmlEmail;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferencePolicy;
import org.apache.felix.scr.annotations.Service;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ResourceResolverFactory;
import org.apache.tika.io.CountingInputStream;
import org.osgi.framework.Constants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.day.cq.commons.jcr.JcrConstants;
import com.day.cq.mailer.MessageGatewayService;
import com.day.cq.workflow.WorkflowException;
import com.day.cq.workflow.WorkflowSession;
import com.day.cq.workflow.exec.WorkItem;
import com.day.cq.workflow.metadata.MetaDataMap;
import org.w3c.dom.Document;
/**
* The <code>SendDownloadAssetEmailProcess</code> will send download asset email.
*/
@Component(metatype = false)
@Service
@Properties({
@Property(name = Constants.SERVICE_DESCRIPTION, value = "Send email notification on submission"),
@Property(name = "process.label", value = "Send Email Notification on submission")
})
public class MailWorkflow implements WorkflowProcess {
private static final Logger log = LoggerFactory.getLogger(MailWorkflow.class);
private static final String DEFAULT_CHARSET = "utf-8";
/**
* resource resolver factory.
*/
@Reference
private ResourceResolverFactory resourceResolverFactory;
@Reference(policy = ReferencePolicy.STATIC)
private MessageGatewayService messageGatewayService;
@Reference(policy = ReferencePolicy.STATIC)
private ResourceResolverFactory resolverFactory;
public void execute(WorkItem workItem, WorkflowSession session, MetaDataMap metaData)
throws WorkflowException {
MetaDataMap workflowMetaDataMap = workItem.getWorkflowData().getMetaDataMap();
Node submitNode = null;
ResourceResolver resolver;
try {
resolver =
resourceResolverFactory.getResourceResolver(Collections.singletonMap("user.jcr.session",
(Object) session.getSession()));
} catch (final Exception e) {
throw new WorkflowException("could not get resource resolver", e);
}
// do not execute upon missing mail service. osgi component still needs to be available for UI
// selection in workflow step configuration.
if (messageGatewayService != null) {
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
if (factory != null) {
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = null;
String payloadPath = workItem.getWorkflowData().getPayload().toString();
submitNode = resolver.getResource(payloadPath).adaptTo(Node.class);
if (submitNode != null) {
InputStream is = submitNode.getProperty("jcr:data").getBinary().getStream();
byte[] fileBytes = IOUtils.toByteArray(is);
is.close();
String username = null, emailAdd = null;
doc = builder.parse(new ByteArrayInputStream(fileBytes));
XPath xPath = XPathFactory.newInstance().newXPath();
org.w3c.dom.Node domNode = (org.w3c.dom.Node) xPath.evaluate("//emailid", doc, XPathConstants.NODE);
if(domNode !=null) {
emailAdd = domNode.getFirstChild().getNodeValue();
}
org.w3c.dom.Node domNodeForName = (org.w3c.dom.Node) xPath.evaluate("//username", doc, XPathConstants.NODE);
if(domNodeForName != null) {
username = domNodeForName.getFirstChild().getNodeValue();
}
if(emailAdd !=null && username != null ) {
ArrayList<InternetAddress> emailRecipients = new ArrayList<InternetAddress>(10);
emailRecipients.add(new InternetAddress(emailAdd));
if (workflowMetaDataMap != null) {
if (emailRecipients != null && emailRecipients.size() != 0) {
String template = getEmailTemplate(metaData, session);
if (template != null) {
// get the string substitutes
Map<String, String> valuesMap = new HashMap<String, String>();
valuesMap.put("event.TimeStamp", Calendar.getInstance().getTime().toString());
valuesMap.put("username", username);
StrSubstitutor substitutor = new StrSubstitutor(valuesMap);
final HtmlEmail email = createEmail(template, substitutor);
email.setTo(emailRecipients);
messageGatewayService.getGateway(HtmlEmail.class).send(email);
log.info("Email was sent.");
} else {
log.warn("Did not send email. No email template defined");
}
} else {
log.warn("Did not send email. No recipient addresses or download URL available.");
}
} else {
log.warn("Did not send email. No workflow metadata is null.");
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
log.error("Fatal error while sending email in workflow", e);
}
} else {
log.warn("cannot send email, mail service unavailable. Please configure Gateway in OSGi Console");
}
}
private String getEmailTemplate(MetaDataMap workflowMetaDataMap, WorkflowSession session) {
String template = workflowMetaDataMap.get("template", String.class);
if (template == null) {
// load mail template
String templatePath = workflowMetaDataMap.get("templatePath", String.class);
template = loadTemplate(session.getSession(), templatePath);
}
log.debug("Loaded template: {}", template);
return template;
}
private HtmlEmail createEmail(final String template, final StrSubstitutor substitutor) {
final HtmlEmail email = new HtmlEmail();
try {
// Note that substitutions must be called, because they are expected to be
// US-ASCII only or specially encoded using MimeUtils class, but substitutions might introduce other chars,
// like e.g. Japanese characters.
// Further the CountingInputStream class does not seem to properly count when reading Japanese characters.
final CountingInputStream in = new CountingInputStream(new ByteArrayInputStream(template.getBytes(DEFAULT_CHARSET)));
final InternetHeaders iHdrs = new InternetHeaders(in);
final Map<String, String[]> hdrs = new HashMap<String, String[]>();
final Enumeration e = iHdrs.getAllHeaders();
while (e.hasMoreElements()) {
final Header hdr = (Header) e.nextElement();
final String name = hdr.getName();
log.debug("Header: {} = {}", name, hdr.getValue());
hdrs.put(name, iHdrs.getHeader(name));
}
// use the counting stream reader to read the mail body
String templateBody = template.substring(in.getCount());
// create email
email.setCharset(DEFAULT_CHARSET);
// set subject
final String[] ret = hdrs.remove("subject");
final String subject = (ret == null ? "" : ret[0]);
log.info("Email subject: " + subject);
if (!StringUtils.isEmpty(subject)) {
email.setSubject(substitutor.replace(subject));
}
// set message body
templateBody = substitutor.replace(templateBody);
log.debug("Substituted mail body: {}", templateBody);
email.setMsg(templateBody);
IOUtils.closeQuietly(in);
} catch (Exception e) {
log.error("Create email: ", e.getMessage());
}
return email;
}
/**
* Loads the mail templates from the repository.
*
* @param path mail templates root path
* @param session session
* @param charSet The character set
* @return a reader to the template or <code>null</code> if not valid.
*/
public String loadTemplate(final Session session, final String path) {
InputStream is = null;
try {
final Node content = session.getNode(path + "/" + JcrConstants.JCR_CONTENT);
is = content.getProperty(JcrConstants.JCR_DATA).getBinary().getStream();
final InputStreamReader r = new InputStreamReader(is, DEFAULT_CHARSET);
final StringWriter w = new StringWriter();
IOUtils.copy(r, w);
return w.toString();
} catch (final Exception e) {
log.error("Error while loading mail template {}:{}", path, e.toString());
} finally {
IOUtils.closeQuietly(is);
}
return null;
}
}
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public void execute(WorkItem workItem, WorkflowSession session, MetaDataMap metaData) throws WorkflowException {
// implement it
}
Configure the Email Service for messageGatewayService to not have a null value.
This code relies on the first instance of the email id and the name that appears in the XML file you submit. The data is stored in the jcr:data property of the node that is created based on the data you submit.
Note:
The new component is not yet displayed on the Edit page for the model. Switch to the design mode and enable the component group for the component.
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