public void run() {
Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
if (!circuitBreaker.isOn()) return; // Don't try - circuit breaker is off
boolean expunge = config.configuration().deleteMailOnInboxClose().get();
if (config.configuration().debug().get()) {
logger.info("Checking email");
logger.info("Delete mail on close - " + expunge);
}
Session session = javax.mail.Session.getInstance(props, authenticator);
session.setDebug(config.configuration().debug().get());
Usecase usecase = newUsecase("Receive Mail");
UnitOfWork uow = null;
Store store = null;
Folder inbox = null;
Folder archive = null;
boolean archiveExists = false;
List<Message> copyToArchive = new ArrayList<Message>();
MimeMessage internalMessage = null;
try {
store = session.getStore(url);
store.connect();
inbox = store.getFolder("INBOX");
inbox.open(Folder.READ_WRITE);
javax.mail.Message[] messages = inbox.getMessages();
FetchProfile fp = new FetchProfile();
// fp.add( "In-Reply-To" );
inbox.fetch(messages, fp);
// check if the archive folder is configured and exists
if (!Strings.empty(config.configuration().archiveFolder().get())
&& config.configuration().protocol().get().startsWith("imap")) {
archive = store.getFolder(config.configuration().archiveFolder().get());
// if not exists - create
if (!archive.exists()) {
archive.create(Folder.HOLDS_MESSAGES);
archiveExists = true;
} else {
archiveExists = true;
}
archive.open(Folder.READ_WRITE);
}
for (javax.mail.Message message : messages) {
int tries = 0;
while (tries < 3) {
uow = module.unitOfWorkFactory().newUnitOfWork(usecase);
ValueBuilder<EmailValue> builder =
module.valueBuilderFactory().newValueBuilder(EmailValue.class);
try {
// Force a complete fetch of the message by cloning it to a internal MimeMessage
// to avoid "javax.mail.MessagingException: Unable to load BODYSTRUCTURE" problems
// f.ex. experienced if the message contains a windows .eml file as attachment!
// Beware that all flag and folder operations have to be made on the original message
// and not on the internal one!!
internalMessage = new MimeMessage((MimeMessage) message);
Object content = internalMessage.getContent();
// Get email fields
builder
.prototype()
.from()
.set(((InternetAddress) internalMessage.getFrom()[0]).getAddress());
builder
.prototype()
.fromName()
.set(((InternetAddress) internalMessage.getFrom()[0]).getPersonal());
builder
.prototype()
.subject()
.set(internalMessage.getSubject() == null ? "" : internalMessage.getSubject());
// Get headers
for (Header header :
Iterables.iterable((Enumeration<Header>) internalMessage.getAllHeaders())) {
builder.prototype().headers().get().put(header.getName(), header.getValue());
}
// Get all recipients in order - TO, CC, BCC
// and provide it to the toaddress method to pick the first possible valid adress
builder
.prototype()
.to()
.set(
toaddress(
internalMessage.getAllRecipients(),
builder.prototype().headers().get().get("References")));
builder.prototype().messageId().set(internalMessage.getHeader("Message-ID")[0]);
// Get body and attachments
String body = "";
// set content initially so it never can become null
builder.prototype().content().set(body);
if (content instanceof String) {
body = content.toString();
builder.prototype().content().set(body);
String contentTypeString = cleanContentType(internalMessage.getContentType());
builder.prototype().contentType().set(contentTypeString);
if (Translator.HTML.equalsIgnoreCase(contentTypeString)) {
builder.prototype().contentHtml().set(body);
}
} else if (content instanceof Multipart) {
handleMultipart((Multipart) content, internalMessage, builder);
} else if (content instanceof InputStream) {
content = new MimeMessage(session, (InputStream) content).getContent();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Inputs.byteBuffer((InputStream) content, 4096).transferTo(Outputs.byteBuffer(baos));
String data = new String(baos.toByteArray(), "UTF-8");
// Unknown content type - abort
// and create failure case
String subj = "Unkonwn content type: " + internalMessage.getSubject();
builder
.prototype()
.subject()
.set(subj.length() > 50 ? subj.substring(0, 50) : subj);
builder.prototype().content().set(body);
builder.prototype().contentType().set(internalMessage.getContentType());
systemDefaults.createCaseOnEmailFailure(builder.newInstance());
copyToArchive.add(message);
if (expunge) message.setFlag(Flags.Flag.DELETED, true);
uow.discard();
tries = 3;
continue;
} else {
// Unknown content type - abort
// and create failure case
String subj = "Unkonwn content type: " + internalMessage.getSubject();
builder
.prototype()
.subject()
.set(subj.length() > 50 ? subj.substring(0, 50) : subj);
builder.prototype().content().set(body);
builder.prototype().contentType().set(internalMessage.getContentType());
systemDefaults.createCaseOnEmailFailure(builder.newInstance());
copyToArchive.add(message);
if (expunge) message.setFlag(Flags.Flag.DELETED, true);
uow.discard();
logger.error(
"Could not parse emails: unknown content type " + content.getClass().getName());
tries = 3;
continue;
}
// make sure mail content fit's into statistic database - truncate on 65.500
// characters.
if (builder.prototype().content().get().length() > 65000) {
builder
.prototype()
.content()
.set(builder.prototype().content().get().substring(0, 65000));
}
// try to reveal if it is a smpt error we are looking at
// X-Failed-Recipients is returned by Gmail
// X-FC-MachineGenerated is returned by FirstClass
// Exchange is following RFC 6522 - The Multipart/Report Media Type for
// the Reporting of Mail System Administrative Messages
boolean isSmtpErrorReport =
!Strings.empty(builder.prototype().headers().get().get("X-Failed-Recipients"))
|| (!Strings.empty(
builder.prototype().headers().get().get("X-FC-MachineGenerated"))
&& "true"
.equals(
builder.prototype().headers().get().get("X-FC-MachineGenerated")))
|| !Strings.empty(
new ContentType(builder.prototype().headers().get().get("Content-Type"))
.getParameter("report-type"));
if (isSmtpErrorReport) {
// This is a mail bounce due to SMTP error - create support case.
String subj = "Undeliverable mail: " + builder.prototype().subject().get();
builder
.prototype()
.subject()
.set(subj.length() > 50 ? subj.substring(0, 50) : subj);
systemDefaults.createCaseOnEmailFailure(builder.newInstance());
copyToArchive.add(message);
if (expunge) message.setFlag(Flags.Flag.DELETED, true);
uow.discard();
logger.error("Received a mail bounce reply: " + body);
tries = 3;
continue;
}
if (builder.prototype().to().get().equals("n/a")) {
// This is a mail has no to address - create support case.
String subj = "No TO address: " + builder.prototype().subject().get();
builder
.prototype()
.subject()
.set(subj.length() > 50 ? subj.substring(0, 50) : subj);
systemDefaults.createCaseOnEmailFailure(builder.newInstance());
copyToArchive.add(message);
if (expunge) message.setFlag(Flags.Flag.DELETED, true);
uow.discard();
logger.error("Received a mail without TO address: " + body);
tries = 3;
continue;
}
mailReceiver.receivedEmail(null, builder.newInstance());
try {
logger.debug("This is try " + tries);
uow.complete();
tries = 3;
} catch (ConcurrentEntityModificationException ceme) {
if (tries < 2) {
logger.debug("Encountered ConcurrentEntityModificationException - try again ");
// discard uow and try again
uow.discard();
tries++;
continue;
} else {
logger.debug("Rethrowing ConcurrentEntityModification.Exception");
tries++;
throw ceme;
}
}
copyToArchive.add(message);
// remove mail on success if expunge is true
if (expunge) message.setFlag(Flags.Flag.DELETED, true);
} catch (Throwable e) {
String subj = "Unknown error: " + internalMessage.getSubject();
builder.prototype().subject().set(subj.length() > 50 ? subj.substring(0, 50) : subj);
StringBuilder content = new StringBuilder();
content.append("Error Message: " + e.getMessage());
content.append("\n\rStackTrace:\n\r");
for (StackTraceElement trace : Arrays.asList(e.getStackTrace())) {
content.append(trace.toString() + "\n\r");
}
builder.prototype().content().set(content.toString());
// since we create the content of the message our self it's ok to set content type
// always to text/plain
builder.prototype().contentType().set("text/plain");
// Make sure to address has some value before vi create a case!!
if (builder.prototype().to().get() == null) {
builder.prototype().to().set("n/a");
}
systemDefaults.createCaseOnEmailFailure(builder.newInstance());
copyToArchive.add(message);
if (expunge) message.setFlag(Flags.Flag.DELETED, true);
uow.discard();
logger.error("Could not parse emails", e);
tries = 3;
}
}
}
// copy message to archive if archive exists
if (archiveExists) {
inbox.copyMessages(copyToArchive.toArray(new Message[0]), archive);
archive.close(false);
}
inbox.close(config.configuration().deleteMailOnInboxClose().get());
store.close();
if (config.configuration().debug().get()) {
logger.info("Checked email");
}
circuitBreaker.success();
} catch (Throwable e) {
logger.error("Error in mail receiver: ", e);
circuitBreaker.throwable(e);
try {
if (inbox != null && inbox.isOpen()) inbox.close(false);
if (store != null && store.isConnected()) store.close();
} catch (Throwable e1) {
logger.error("Could not close inbox", e1);
}
}
}
public void activate() throws Exception {
circuitBreaker = descriptor.metaInfo(CircuitBreaker.class);
logger = LoggerFactory.getLogger(ReceiveMailService.class);
if (config.configuration().enabled().get()) {
UnitOfWork uow =
module
.unitOfWorkFactory()
.newUnitOfWork(newUsecase("Create Streamflow support structure"));
RoleMap.newCurrentRoleMap();
RoleMap.current().set(uow.get(UserAuthentication.class, UserEntity.ADMINISTRATOR_USERNAME));
RoleMap.current().set(new UserPrincipal(UserEntity.ADMINISTRATOR_USERNAME));
Organizations.Data orgs =
uow.get(OrganizationsEntity.class, OrganizationsEntity.ORGANIZATIONS_ID);
OrganizationEntity org = (OrganizationEntity) orgs.organization().get();
// check for the existance of support structure for mails that cannot be parsed
RoleMap.current().set(org.getAdministratorRole());
OrganizationalUnit ou = null;
Project project = null;
CaseType caseType = null;
try {
try {
ou =
org.getOrganizationalUnitByName(
systemDefaults.config().configuration().supportOrganizationName().get());
} catch (IllegalArgumentException iae) {
ou =
org.createOrganizationalUnit(
systemDefaults.config().configuration().supportOrganizationName().get());
}
try {
project =
ou.getProjectByName(
systemDefaults.config().configuration().supportProjectName().get());
} catch (IllegalArgumentException iae) {
project =
ou.createProject(
systemDefaults.config().configuration().supportProjectName().get());
}
try {
caseType =
project.getCaseTypeByName(
systemDefaults
.config()
.configuration()
.supportCaseTypeForIncomingEmailName()
.get());
} catch (IllegalArgumentException iae) {
caseType =
ou.createCaseType(
systemDefaults
.config()
.configuration()
.supportCaseTypeForIncomingEmailName()
.get());
project.addSelectedCaseType(caseType);
project.addMember(RoleMap.current().get(Member.class));
}
} finally {
uow.complete();
RoleMap.clearCurrentRoleMap();
}
// Authenticator
authenticator =
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(
config.configuration().user().get(), config.configuration().password().get());
}
};
props = new Properties();
String protocol = config.configuration().protocol().get();
props.put("mail." + protocol + ".host", config.configuration().host().get());
props.put("mail.transport.protocol", protocol);
props.put("mail." + protocol + ".auth", "true");
props.put("mail." + protocol + ".port", config.configuration().port().get());
if (config.configuration().useSSL().get()) {
props.setProperty(
"mail." + protocol + ".socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.setProperty("mail." + protocol + ".socketFactory.fallback", "false");
props.setProperty(
"mail." + protocol + ".socketFactory.port", "" + config.configuration().port().get());
}
url =
new URLName(
protocol,
config.configuration().host().get(),
config.configuration().port().get(),
"",
config.configuration().user().get(),
config.configuration().password().get());
circuitBreaker.addVetoableChangeListener(this);
circuitBreaker.turnOn();
long sleep = config.configuration().sleepPeriod().get();
logger.info(
"Starting scheduled mail receiver thread. Checking every: "
+ (sleep == 0 ? 10 : sleep)
+ " min");
receiverExecutor =
Executors.newSingleThreadScheduledExecutor(new NamedThreadFactory("ReceiveMail"));
receiverExecutor.scheduleWithFixedDelay(
this, 0, (sleep == 0 ? 10 : sleep), TimeUnit.MINUTES);
}
}
