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NIFI-2779 - Add processor to GetEmail Supporting Exchange Web Services 

This closes: #1326

Signed-off-by: Andre F de Miranda <trixpan@users.noreply.github.com>
This commit is contained in:
patricker 2016-10-18 14:45:26 -06:00 committed by Andre F de Miranda
parent 86fb67d55c
commit b7cdc6b382
7 changed files with 619 additions and 6 deletions
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25
nifi-assembly/LICENSE
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@ -1792,4 +1792,27 @@ under a 3-Clause BSD style license:
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The binary distribution of this product bundles 'EWS JAVA API' which is available
under an MIT style license. For details see https://github.com/OfficeDev/ews-java-api.
Copyright (c) 2012 Microsoft Corporation
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

8
nifi-assembly/NOTICE
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@ -1285,6 +1285,14 @@ The following binary components are provided under the Eclipse Public License 1.
(EPL 1.0) JaCoCo Java Code Coverage Library ( org.jacoco ) http://www.eclemma.org/jacoco (EPL 1.0) JaCoCo Java Code Coverage Library ( org.jacoco ) http://www.eclemma.org/jacoco
(EPLv1.0) Clojure (org.clojure:clojure:1.8.0 - http://clojure.org) (EPLv1.0) Clojure (org.clojure:clojure:1.8.0 - http://clojure.org)
************************
The MIT License
************************
The following binary components are provided under the MIT License. See project link for details.
(MIT License) EWS Java API (com.microsoft.ews-java-api:ews-java-api:2.0 - https://github.com/OfficeDev/ews-java-api)
***************** *****************
Mozilla Public License v2.0 Mozilla Public License v2.0
***************** *****************

25
nifi-nar-bundles/nifi-email-bundle/nifi-email-nar/src/main/resources/META-INF/LICENSE
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@ -253,4 +253,27 @@
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
The binary distribution of this product bundles 'EWS JAVA API' which is available
under an MIT style license. For details see https://github.com/OfficeDev/ews-java-api.
Copyright (c) 2012 Microsoft Corporation
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

30
nifi-nar-bundles/nifi-email-bundle/nifi-email-nar/src/main/resources/META-INF/NOTICE
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@ -33,6 +33,20 @@ The following binary components are provided under the Apache Software License v
Apache Commons Logging Apache Commons Logging
Copyright 2003-2016 The Apache Software Foundation Copyright 2003-2016 The Apache Software Foundation
(ASLv2) Apache HttpComponents
The following NOTICE information applies:
Apache HttpClient
Copyright 1999-2015 The Apache Software Foundation
Apache HttpCore
Copyright 2005-2015 The Apache Software Foundation
Apache HttpMime
Copyright 1999-2013 The Apache Software Foundation
This project contains annotations derived from JCIP-ANNOTATIONS
Copyright (c) 2005 Brian Goetz and Tim Peierls. See http://www.jcip.net
(ASLv2) Spring Framework (ASLv2) Spring Framework
The following NOTICE information applies: The following NOTICE information applies:
Spring Framework Spring Framework
@ -67,6 +81,11 @@ The following binary components are provided under the Apache Software License v
CurvesAIP is BSD-licensed software ( https://github.com/virtuald/curvesapi/) CurvesAIP is BSD-licensed software ( https://github.com/virtuald/curvesapi/)
Copyright (c) 2005, Graph Builder Copyright (c) 2005, Graph Builder
(ASLv2) Joda Time
The following NOTICE information applies:
This product includes software developed by
Joda.org (http://www.joda.org/).
************************ ************************
Common Development and Distribution License 1.1 Common Development and Distribution License 1.1
@ -84,6 +103,17 @@ The following binary components are provided under the Common Development and Di
(CDDL 1.0) JavaBeans Activation Framework (JAF) (javax.activation:activation:jar:1.1 - http://java.sun.com/products/javabeans/jaf/index.jsp) (CDDL 1.0) JavaBeans Activation Framework (JAF) (javax.activation:activation:jar:1.1 - http://java.sun.com/products/javabeans/jaf/index.jsp)
************************
The MIT License
************************
The following binary components are provided under the MIT License. See project link for details.
(MIT License) EWS Java API
The following NOTICE information applies:
Microsoft Corporation
Copyright (c) 2012
***************** *****************
Public Domain Public Domain
***************** *****************

17
nifi-nar-bundles/nifi-email-bundle/nifi-email-processors/pom.xml
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@ -34,16 +34,20 @@
<groupId>org.apache.nifi</groupId> <groupId>org.apache.nifi</groupId>
<artifactId>nifi-processor-utils</artifactId> <artifactId>nifi-processor-utils</artifactId>
</dependency> </dependency>
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
</dependency>
<dependency> <dependency>
<groupId>org.apache.commons</groupId> <groupId>org.apache.commons</groupId>
<artifactId>commons-email</artifactId> <artifactId>commons-email</artifactId>
<version>1.4</version> <version>1.4</version>
<exclusions> <exclusions>
<exclusion> <exclusion>
<groupId>com.sun.mail</groupId> <groupId>com.sun.mail</groupId>
<artifactId>javax.mail</artifactId> <artifactId>javax.mail</artifactId>
</exclusion> </exclusion>
</exclusions> </exclusions>
</dependency> </dependency>
<dependency> <dependency>
<groupId>com.sun.mail</groupId> <groupId>com.sun.mail</groupId>
@ -62,7 +66,7 @@
<exclusion> <exclusion>
<groupId>javax.mail</groupId> <groupId>javax.mail</groupId>
<artifactId>mail</artifactId> <artifactId>mail</artifactId>
</exclusion> </exclusion>
</exclusions> </exclusions>
</dependency> </dependency>
<dependency> <dependency>
@ -70,6 +74,11 @@
<artifactId>findbugs-annotations</artifactId> <artifactId>findbugs-annotations</artifactId>
<version>1.3.9-1</version> <version>1.3.9-1</version>
</dependency> </dependency>
<dependency>
<groupId>com.microsoft.ews-java-api</groupId>
<artifactId>ews-java-api</artifactId>
<version>2.0</version>
</dependency>
<dependency> <dependency>
<groupId>org.apache.nifi</groupId> <groupId>org.apache.nifi</groupId>
<artifactId>nifi-ssl-context-service-api</artifactId> <artifactId>nifi-ssl-context-service-api</artifactId>

519
nifi-nar-bundles/nifi-email-bundle/nifi-email-processors/src/main/java/org/apache/nifi/processors/email/ConsumeEWS.java Normal file
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@ -0,0 +1,519 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.nifi.processors.email;
import microsoft.exchange.webservices.data.autodiscover.IAutodiscoverRedirectionUrl;
import microsoft.exchange.webservices.data.core.ExchangeService;
import microsoft.exchange.webservices.data.core.PropertySet;
import microsoft.exchange.webservices.data.core.enumeration.misc.ExchangeVersion;
import microsoft.exchange.webservices.data.core.enumeration.property.BodyType;
import microsoft.exchange.webservices.data.core.enumeration.property.WellKnownFolderName;
import microsoft.exchange.webservices.data.core.enumeration.search.FolderTraversal;
import microsoft.exchange.webservices.data.core.enumeration.search.LogicalOperator;
import microsoft.exchange.webservices.data.core.enumeration.search.SortDirection;
import microsoft.exchange.webservices.data.core.enumeration.service.ConflictResolutionMode;
import microsoft.exchange.webservices.data.core.enumeration.service.DeleteMode;
import microsoft.exchange.webservices.data.core.service.folder.Folder;
import microsoft.exchange.webservices.data.core.service.item.EmailMessage;
import microsoft.exchange.webservices.data.core.service.item.Item;
import microsoft.exchange.webservices.data.core.service.schema.EmailMessageSchema;
import microsoft.exchange.webservices.data.core.service.schema.FolderSchema;
import microsoft.exchange.webservices.data.core.service.schema.ItemSchema;
import microsoft.exchange.webservices.data.credential.ExchangeCredentials;
import microsoft.exchange.webservices.data.credential.WebCredentials;
import microsoft.exchange.webservices.data.property.complex.FileAttachment;
import microsoft.exchange.webservices.data.search.FindFoldersResults;
import microsoft.exchange.webservices.data.search.FindItemsResults;
import microsoft.exchange.webservices.data.search.FolderView;
import microsoft.exchange.webservices.data.search.ItemView;
import microsoft.exchange.webservices.data.search.filter.SearchFilter;
import org.apache.commons.mail.EmailAttachment;
import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.HtmlEmail;
import org.apache.commons.mail.MultiPartEmail;
import org.apache.nifi.annotation.behavior.InputRequirement;
import org.apache.nifi.annotation.documentation.CapabilityDescription;
import org.apache.nifi.annotation.documentation.Tags;
import org.apache.nifi.annotation.lifecycle.OnStopped;
import org.apache.nifi.components.PropertyDescriptor;
import org.apache.nifi.flowfile.FlowFile;
import org.apache.nifi.processor.AbstractProcessor;
import org.apache.nifi.processor.ProcessContext;
import org.apache.nifi.processor.ProcessSession;
import org.apache.nifi.processor.Relationship;
import org.apache.nifi.processor.exception.ProcessException;
import org.apache.nifi.processor.io.OutputStreamCallback;
import org.apache.nifi.processor.util.StandardValidators;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.mail.Address;
import javax.mail.Flags;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import javax.mail.util.ByteArrayDataSource;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;
@InputRequirement(InputRequirement.Requirement.INPUT_FORBIDDEN)
@CapabilityDescription("Consumes messages from Microsoft Exchange using Exchange Web Services. "
+ "The raw-bytes of each received email message are written as contents of the FlowFile")
@Tags({ "Email", "EWS", "Exchange", "Get", "Ingest", "Ingress", "Message", "Consume" })
public class ConsumeEWS extends AbstractProcessor {
public static final PropertyDescriptor USER = new PropertyDescriptor.Builder()
.name("user")
.displayName("User Name")
.description("User Name used for authentication and authorization with Email server.")
.required(true)
.expressionLanguageSupported(true)
.addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
.build();
public static final PropertyDescriptor PASSWORD = new PropertyDescriptor.Builder()
.name("password")
.displayName("Password")
.description("Password used for authentication and authorization with Email server.")
.required(true)
.expressionLanguageSupported(true)
.addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
.sensitive(true)
.build();
public static final PropertyDescriptor FOLDER = new PropertyDescriptor.Builder()
.name("folder")
.displayName("Folder")
.description("Email folder to retrieve messages from (e.g., INBOX)")
.required(true)
.expressionLanguageSupported(true)
.defaultValue("INBOX")
.addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
.build();
public static final PropertyDescriptor FETCH_SIZE = new PropertyDescriptor.Builder()
.name("fetch.size")
.displayName("Fetch Size")
.description("Specify the maximum number of Messages to fetch per call to Email Server.")
.required(true)
.expressionLanguageSupported(true)
.defaultValue("10")
.addValidator(StandardValidators.POSITIVE_INTEGER_VALIDATOR)
.build();
public static final PropertyDescriptor SHOULD_DELETE_MESSAGES = new PropertyDescriptor.Builder()
.name("delete.messages")
.displayName("Delete Messages")
.description("Specify whether mail messages should be deleted after retrieval.")
.required(true)
.allowableValues("true", "false")
.defaultValue("false")
.addValidator(StandardValidators.BOOLEAN_VALIDATOR)
.build();
static final PropertyDescriptor CONNECTION_TIMEOUT = new PropertyDescriptor.Builder()
.name("connection.timeout")
.displayName("Connection timeout")
.description("The amount of time to wait to connect to Email server")
.required(true)
.addValidator(StandardValidators.TIME_PERIOD_VALIDATOR)
.expressionLanguageSupported(true)
.defaultValue("30 sec")
.build();
public static final PropertyDescriptor EXCHANGE_VERSION = new PropertyDescriptor.Builder()
.name("mail-ews-version")
.displayName("Exchange Version")
.description("What version of Exchange Server the server is running.")
.required(true)
.allowableValues(ExchangeVersion.values())
.defaultValue(ExchangeVersion.Exchange2010_SP2.name())
.addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
.build();
public static final PropertyDescriptor EWS_URL = new PropertyDescriptor.Builder()
.name("ews-url")
.displayName("EWS URL")
.description("URL of the EWS Endpoint. Required if Autodiscover is false.")
.required(false)
.addValidator(StandardValidators.URL_VALIDATOR)
.build();
public static final PropertyDescriptor USE_AUTODISCOVER = new PropertyDescriptor.Builder()
.name("ews-autodiscover")
.displayName("Auto Discover URL")
.description("Whether or not to use the Exchange email address to Autodiscover the EWS endpoint URL.")
.required(true)
.allowableValues("true","false")
.defaultValue("true")
.build();
public static final PropertyDescriptor SHOULD_MARK_READ = new PropertyDescriptor.Builder()
.name("ews-mark-as-read")
.displayName("Mark Messages as Read")
.description("Specify if messages should be marked as read after retrieval.")
.required(true)
.allowableValues("true", "false")
.defaultValue("true")
.addValidator(StandardValidators.BOOLEAN_VALIDATOR)
.build();
static final Relationship REL_SUCCESS = new Relationship.Builder()
.name("success")
.description("All messages that are the are successfully received from Email server and converted to FlowFiles are routed to this relationship")
.build();
final protected List<PropertyDescriptor> DESCRIPTORS;
final protected Set<Relationship> RELATIONSHIPS;
protected final Logger logger = LoggerFactory.getLogger(this.getClass());
protected volatile BlockingQueue<Message> messageQueue;
protected volatile String displayUrl;
protected volatile ProcessSession processSession;
protected volatile boolean shouldSetDeleteFlag;
protected volatile String folderName;
protected volatile int fetchSize;
public ConsumeEWS(){
final Set<Relationship> relationshipSet = new HashSet<>();
relationshipSet.add(REL_SUCCESS);
RELATIONSHIPS = relationshipSet;
final List<PropertyDescriptor> descriptors = new ArrayList<>();
descriptors.add(USER);
descriptors.add(PASSWORD);
descriptors.add(FOLDER);
descriptors.add(FETCH_SIZE);
descriptors.add(SHOULD_DELETE_MESSAGES);
descriptors.add(CONNECTION_TIMEOUT);
descriptors.add(EXCHANGE_VERSION);
descriptors.add(EWS_URL);
descriptors.add(USE_AUTODISCOVER);
descriptors.add(SHOULD_MARK_READ);
DESCRIPTORS = descriptors;
}
@Override
public Set<Relationship> getRelationships() {
return RELATIONSHIPS;
}
@Override
protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
return DESCRIPTORS;
}
@Override
public void onTrigger(ProcessContext context, ProcessSession processSession) throws ProcessException {
if(this.messageQueue == null){
int fetchSize = context.getProperty(FETCH_SIZE).evaluateAttributeExpressions().asInteger();
this.messageQueue = new ArrayBlockingQueue<>(fetchSize);
}
this.folderName = context.getProperty(FOLDER).getValue();
Message emailMessage = this.receiveMessage(context);
if (emailMessage != null) {
this.transfer(emailMessage, context, processSession);
} else {
//No new messages found, yield the processor
context.yield();
}
}
protected ExchangeService initializeIfNecessary(ProcessContext context) throws ProcessException {
ExchangeVersion ver = ExchangeVersion.valueOf(context.getProperty(EXCHANGE_VERSION).getValue());
ExchangeService service = new ExchangeService(ver);
final String timeoutInMillis = String.valueOf(context.getProperty(CONNECTION_TIMEOUT).evaluateAttributeExpressions().asTimePeriod(TimeUnit.MILLISECONDS));
service.setTimeout(Integer.parseInt(timeoutInMillis));
String userEmail = context.getProperty(USER).getValue();
String password = context.getProperty(PASSWORD).getValue();
ExchangeCredentials credentials = new WebCredentials(userEmail, password);
service.setCredentials(credentials);
Boolean useAutodiscover = context.getProperty(USE_AUTODISCOVER).asBoolean();
if(useAutodiscover){
try {
service.autodiscoverUrl(userEmail, new RedirectionUrlCallback());
} catch (Exception e) {
throw new ProcessException("Failure setting Autodiscover URL from email address.", e);
}
} else {
String ewsURL = context.getProperty(EWS_URL).getValue();
try {
service.setUrl(new URI(ewsURL));
} catch (URISyntaxException e) {
throw new ProcessException("Failure setting EWS URL.", e);
}
}
return service;
}
@Override
protected PropertyDescriptor getSupportedDynamicPropertyDescriptor(final String propertyDescriptorName) {
return new PropertyDescriptor.Builder()
.description("Specifies the value for '" + propertyDescriptorName + "' Java Mail property.")
.name(propertyDescriptorName).addValidator(StandardValidators.NON_EMPTY_VALIDATOR).dynamic(true)
.build();
}
/**
* Return the target receivere's mail protocol (e.g., imap, pop etc.)
*/
protected String getProtocol(ProcessContext processContext) {
return "ews";
}
/**
* Fills the internal message queue if such queue is empty. This is due to
* the fact that per single session there may be multiple messages retrieved
* from the email server (see FETCH_SIZE).
*/
protected void fillMessageQueueIfNecessary(ProcessContext context) throws ProcessException {
if (this.messageQueue.isEmpty()) {
ExchangeService service = this.initializeIfNecessary(context);
boolean deleteOnRead = context.getProperty(SHOULD_DELETE_MESSAGES).getValue().equals("true");
boolean markAsRead = context.getProperty(SHOULD_MARK_READ).getValue().equals("true");
try {
//Get Folder
Folder folder = getFolder(service);
ItemView view = new ItemView(messageQueue.remainingCapacity());
view.getOrderBy().add(ItemSchema.DateTimeReceived, SortDirection.Ascending);
SearchFilter sf = new SearchFilter.SearchFilterCollection(LogicalOperator.And, new SearchFilter.IsEqualTo(EmailMessageSchema.IsRead, false));
FindItemsResults<Item> findResults = service.findItems(folder.getId(), sf, view);
if(findResults == null || findResults.getItems().size()== 0){
return;
}
service.loadPropertiesForItems(findResults, PropertySet.FirstClassProperties);
for (Item item : findResults) {
EmailMessage ewsMessage = (EmailMessage) item;
messageQueue.add(parseMessage(ewsMessage));
if(deleteOnRead){
ewsMessage.delete(DeleteMode.HardDelete);
} else if(markAsRead){
ewsMessage.setIsRead(true);
ewsMessage.update(ConflictResolutionMode.AlwaysOverwrite);
}
}
service.close();
} catch (Exception e) {
throw new ProcessException("Failed retrieving new messages from EWS.", e);
}
}
}
protected Folder getFolder(ExchangeService service) {
Folder folder;
if(folderName.equals("INBOX")){
try {
folder = Folder.bind(service, WellKnownFolderName.Inbox);
} catch (Exception e) {
throw new ProcessException("Failed to bind Inbox Folder on EWS Server", e);
}
} else {
FolderView view = new FolderView(10);
view.setTraversal(FolderTraversal.Deep);
SearchFilter searchFilter = new SearchFilter.IsEqualTo(FolderSchema.DisplayName, folderName);
try {
FindFoldersResults foldersResults = service.findFolders(WellKnownFolderName.Root,searchFilter, view);
ArrayList<Folder> folderIds = foldersResults.getFolders();
if(folderIds.size() > 1){
throw new ProcessException("More than 1 folder found with the name " + folderName);
}
folder = Folder.bind(service, folderIds.get(0).getId());
} catch (Exception e) {
throw new ProcessException("Search for Inbox Subfolder failed.", e);
}
}
return folder;
}
public MimeMessage parseMessage(EmailMessage item) throws Exception {
EmailMessage ewsMessage = item;
final String bodyText = ewsMessage.getBody().toString();
MultiPartEmail mm;
if(ewsMessage.getBody().getBodyType() == BodyType.HTML){
mm = new HtmlEmail().setHtmlMsg(bodyText);
} else {
mm = new MultiPartEmail();
mm.setMsg(bodyText);
}
mm.setHostName("NiFi-EWS");
//from
mm.setFrom(ewsMessage.getFrom().getAddress());
//to recipients
ewsMessage.getToRecipients().forEach(x->{
try {
mm.addTo(x.getAddress());
} catch (EmailException e) {
throw new ProcessException("Failed to add TO recipient.", e);
}
});
//cc recipients
ewsMessage.getCcRecipients().forEach(x->{
try {
mm.addCc(x.getAddress());
} catch (EmailException e) {
throw new ProcessException("Failed to add CC recipient.", e);
}
});
//subject
mm.setSubject(ewsMessage.getSubject());
//sent date
mm.setSentDate(ewsMessage.getDateTimeSent());
//add message headers
ewsMessage.getInternetMessageHeaders().forEach(x-> mm.addHeader(x.getName(), x.getValue()));
//Any attachments
if(ewsMessage.getHasAttachments()){
ewsMessage.getAttachments().forEach(x->{
try {
FileAttachment file = (FileAttachment)x;
file.load();
ByteArrayDataSource bds = new ByteArrayDataSource(file.getContent(), file.getContentType());
mm.attach(bds,file.getName(), "", EmailAttachment.ATTACHMENT);
} catch (MessagingException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
});
}
mm.buildMimeMessage();
return mm.getMimeMessage();
}
/**
* Disposes the message by converting it to a {@link FlowFile} transferring
* it to the REL_SUCCESS relationship.
*/
private void transfer(Message emailMessage, ProcessContext context, ProcessSession processSession) {
long start = System.nanoTime();
FlowFile flowFile = processSession.create();
flowFile = processSession.append(flowFile, new OutputStreamCallback() {
@Override
public void process(final OutputStream out) throws IOException {
try {
emailMessage.writeTo(out);
} catch (MessagingException e) {
throw new IOException(e);
}
}
});
long executionDuration = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - start);
String fromAddressesString = "";
try {
Address[] fromAddresses = emailMessage.getFrom();
if (fromAddresses != null) {
fromAddressesString = Arrays.asList(fromAddresses).toString();
}
} catch (MessagingException e) {
this.logger.warn("Faild to retrieve 'From' attribute from Message.");
}
processSession.getProvenanceReporter().receive(flowFile, this.displayUrl, "Received message from " + fromAddressesString, executionDuration);
this.getLogger().info("Successfully received {} from {} in {} millis", new Object[]{flowFile, fromAddressesString, executionDuration});
processSession.transfer(flowFile, REL_SUCCESS);
try {
emailMessage.setFlag(Flags.Flag.DELETED, this.shouldSetDeleteFlag);
} catch (MessagingException e) {
this.logger.warn("Failed to set DELETE Flag on the message, data duplication may occur.");
}
}
/**
* Receives message from the internal queue filling up the queue if
* necessary.
*/
protected Message receiveMessage(ProcessContext context) {
Message emailMessage = null;
try {
this.fillMessageQueueIfNecessary(context);
emailMessage = this.messageQueue.poll(1, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
context.yield();
this.logger.error("Failed retrieving messages from EWS.", e);
Thread.currentThread().interrupt();
this.logger.debug("Current thread is interrupted");
}
return emailMessage;
}
@OnStopped
public void stop(ProcessContext processContext) {
this.flushRemainingMessages(processContext);
}
/**
* Will flush the remaining messages when this processor is stopped.
*/
protected void flushRemainingMessages(ProcessContext processContext) {
Message emailMessage;
try {
while ((emailMessage = this.messageQueue.poll(1, TimeUnit.MILLISECONDS)) != null) {
this.transfer(emailMessage, processContext, this.processSession);
this.processSession.commit();
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
this.logger.debug("Current thread is interrupted");
}
}
static class RedirectionUrlCallback implements IAutodiscoverRedirectionUrl {
public boolean autodiscoverRedirectionUrlValidationCallback(
String redirectionUrl) {
return redirectionUrl.toLowerCase().startsWith("https://");
}
}
}

1
nifi-nar-bundles/nifi-email-bundle/nifi-email-processors/src/main/resources/META-INF/services/org.apache.nifi.processor.Processor
View File

@ -18,3 +18,4 @@ org.apache.nifi.processors.email.ExtractEmailHeaders
org.apache.nifi.processors.email.ListenSMTP org.apache.nifi.processors.email.ListenSMTP
org.apache.nifi.processors.email.ConsumeIMAP org.apache.nifi.processors.email.ConsumeIMAP
org.apache.nifi.processors.email.ConsumePOP3 org.apache.nifi.processors.email.ConsumePOP3
org.apache.nifi.processors.email.ConsumeEWS