Spring Integration Reference Manual

Authors

Mark Fisher, Marius Bogoevici, Iwein Fuld, Jonas Partner, Oleg Zhurakousky, Gary Russell, Dave Syer, Josh Long, David Turanski, Gunnar Hillert, Artem Bilan, Amol Nayak

4.0.0.BUILD-SNAPSHOT


Table of Contents

Preface
1. Requirements
1.1. Compatible Java Versions
1.2. Compatible Versions of the Spring Framework
2. Code Conventions
I. What's new?
1. What's new in Spring Integration 4.0?
1.1. New Components
1.1.1. MQTT Channel Adapters
1.1.2. @EnableIntegration
1.1.3. @IntegrationComponentScan
1.1.4. @EnableMessageHistory
1.1.5. @MessagingGateway
1.1.6. Spring Boot @EnableAutoConfiguration
1.1.7. @GlobalChannelInterceptor
1.1.8. @IntegrationConverter
1.1.9. @EnablePublisher
1.1.10. Redis Channel Message Stores
1.1.11. MongodDB Channel Message Store
1.1.12. @EnableIntegrationMBeanExport
1.1.13. ChannelSecurityInterceptorFactoryBean
1.1.14. Redis Command Gateway
1.1.15. RedisLockRegistry and GemfireLockRegistry
1.1.16. @Poller
1.1.17. @InboundChannelAdapter and SmartLifecycle for Annotated Endpoints
1.1.18. Twitter Search Outbound Gateway
1.1.19. Gemfire Metadata Store
1.2. General Changes
1.2.1. Requires Spring Framework 4.0
1.2.2. Header Type for XPath Header Enricher
1.2.3. Object To Json Transformer: Node Result
1.2.4. JMS Header Mapping
1.2.5. JMS Outbound Channel Adapter
1.2.6. JMS Inbound Channel Adapter
1.2.7. Datatype Channels
1.2.8. Simpler Retry Advice Configuration
1.2.9. Correlation Endpoint: Time-based Release Strategy
1.2.10. Redis Metadata Store
1.2.11. JdbcChannelMessageStore and PriorityChannel
1.2.12. AMQP Endpoints Delivery Mode
II. Overview of Spring Integration Framework
2. Spring Integration Overview
2.1. Background
2.2. Goals and Principles
2.3. Main Components
2.3.1. Message
2.3.2. Message Channel
2.3.3. Message Endpoint
2.4. Message Endpoints
2.4.1. Transformer
2.4.2. Filter
2.4.3. Router
2.4.4. Splitter
2.4.5. Aggregator
2.4.6. Service Activator
2.4.7. Channel Adapter
2.5. Configuration
III. Core Messaging
3. Messaging Channels
3.1. Message Channels
3.1.1. The MessageChannel Interface
PollableChannel
SubscribableChannel
3.1.2. Message Channel Implementations
PublishSubscribeChannel
QueueChannel
PriorityChannel
RendezvousChannel
DirectChannel
ExecutorChannel
Scoped Channel
3.1.3. Channel Interceptors
3.1.4. MessagingTemplate
3.1.5. Configuring Message Channels
DirectChannel Configuration
Datatype Channel Configuration
QueueChannel Configuration
PublishSubscribeChannel Configuration
ExecutorChannel
PriorityChannel Configuration
RendezvousChannel Configuration
Scoped Channel Configuration
Channel Interceptor Configuration
Global Channel Interceptor
Wire Tap
Global Wire Tap Configuration
3.1.6. Special Channels
3.2. Poller (Polling Consumer)
3.3. Channel Adapter
3.3.1. Configuring An Inbound Channel Adapter
3.3.2. Configuring An Outbound Channel Adapter
3.3.3. Channel Adapter Expressions and Scripts
3.4. Messaging Bridge
3.4.1. Introduction
3.4.2. Configuring Bridge
4. Message Construction
4.1. Message
4.1.1. The Message Interface
4.1.2. Message Headers
Message ID Generation
4.1.3. Message Implementations
4.1.4. The MessageBuilder Helper Class
5. Message Routing
5.1. Routers
5.1.1. Overview
5.1.2. Common Router Parameters
Inside and Outside of a Chain
Top-Level (Outside of a Chain)
5.1.3. Router Implementations
PayloadTypeRouter
HeaderValueRouter
RecipientListRouter
XPath Router
Routing and Error handling
5.1.4. Configuring (Generic) Router
Configuring a Content Based Router with XML
Configuring a Router with Annotations
5.1.5. Dynamic Routers
Manage Router Mappings using the Control Bus
Manage Router Mappings using JMX
5.2. Filter
5.2.1. Introduction
5.2.2. Configuring Filter
Configuring a Filter with XML
Configuring a Filter with Annotations
5.3. Splitter
5.3.1. Introduction
5.3.2. Programming model
5.3.3. Configuring Splitter
Configuring a Splitter using XML
Configuring a Splitter with Annotations
5.4. Aggregator
5.4.1. Introduction
5.4.2. Functionality
5.4.3. Programming model
AggregatingMessageHandler
ReleaseStrategy
CorrelationStrategy
5.4.4. Configuring an Aggregator
Configuring an Aggregator with XML
Configuring an Aggregator with Annotations
5.4.5. Managing State in an Aggregator: MessageGroupStore
5.5. Resequencer
5.5.1. Introduction
5.5.2. Functionality
5.5.3. Configuring a Resequencer
5.6. Message Handler Chain
5.6.1. Introduction
5.6.2. Configuring a Chain
6. Message Transformation
6.1. Transformer
6.1.1. Introduction
6.1.2. Configuring Transformer
Configuring Transformer with XML
Configuring a Transformer with Annotations
6.1.3. Header Filter
6.2. Content Enricher
6.2.1. Introduction
6.2.2. Header Enricher
6.2.3. Payload Enricher
Configuration
Examples
6.3. Claim Check
6.3.1. Introduction
6.3.2. Incoming Claim Check Transformer
6.3.3. Outgoing Claim Check Transformer
6.3.4. A word on Message Store
7. Messaging Endpoints
7.1. Message Endpoints
7.1.1. Message Handler
7.1.2. Event Driven Consumer
7.1.3. Polling Consumer
7.1.4. Namespace Support
7.1.5. Change Polling Rate at Runtime
7.1.6. Payload Type Conversion
7.1.7. Asynchronous polling
7.1.8. Endpoint Inner Beans
7.2. Messaging Gateways
7.2.1. Enter the GatewayProxyFactoryBean
7.2.2. Gateway XML Namespace Support
7.2.3. Setting the Default Reply Channel
7.2.4. Gateway Configuration with Annotations and/or XML
7.2.5. Mapping Method Arguments to a Message
7.2.6. @MessagingGateway Annotation
7.2.7. Invoking No-Argument Methods
7.2.8. Error Handling
7.2.9. Asynchronous Gateway
7.2.10. Gateway behavior when no response arrives
7.3. Service Activator
7.3.1. Introduction
7.3.2. Configuring Service Activator
7.4. Delayer
7.4.1. Introduction
7.4.2. Configuring Delayer
7.4.3. Delayer and Message Store
7.5. Scripting support
7.5.1. Script configuration
7.6. Groovy support
7.6.1. Groovy configuration
7.6.2. Control Bus
7.7. Adding Behavior to Endpoints
7.7.1. Provided Advice Classes
Retry Advice
Circuit Breaker Advice
Expression Evaluating Advice
7.7.2. Custom Advice Classes
7.7.3. Other Advice Chain Elements
7.7.4. Advising Filters
7.7.5. Advising Endpoints Using Annotations
7.7.6. Ordering Advices within an Advice Chain
7.8. Logging Channel Adapter
8. System Management
8.1. JMX Support
8.1.1. Notification Listening Channel Adapter
8.1.2. Notification Publishing Channel Adapter
8.1.3. Attribute Polling Channel Adapter
8.1.4. Tree Polling Channel Adapter
8.1.5. Operation Invoking Channel Adapter
8.1.6. Operation Invoking Outbound Gateway
8.1.7. MBean Exporter
MBean ObjectNames
MessageChannel MBean Features
Orderly Shutdown Managed Operation
8.2. Message History
8.2.1. Message History Configuration
8.3. Message Store
8.4. Metadata Store
8.4.1. Idempotent Receiver
8.5. Control Bus
8.6. Orderly Shutdown
IV. Integration Endpoints
9. Endpoint Quick Reference Table
10. AMQP Support
10.1. Introduction
10.2. Inbound Channel Adapter
10.3. Outbound Channel Adapter
10.4. Inbound Gateway
10.5. Outbound Gateway
10.6. AMQP Backed Message Channels
10.7. AMQP Message Headers
10.8. AMQP Samples
11. Spring ApplicationEvent Support
11.1. Receiving Spring ApplicationEvents
11.2. Sending Spring ApplicationEvents
12. Feed Adapter
12.1. Introduction
12.2. Feed Inbound Channel Adapter
13. File Support
13.1. Introduction
13.2. Reading Files
13.2.1. 'Tail'ing Files
13.3. Writing files
13.3.1. Generating Filenames
13.3.2. Specifying the Output Directory
13.3.3. Dealing with Existing Destination Files
13.3.4. File Outbound Channel Adapter
13.3.5. Outbound Gateway
13.4. File Transformers
14. FTP/FTPS Adapters
14.1. Introduction
14.2. FTP Session Factory
14.3. FTP Inbound Channel Adapter
14.4. FTP Outbound Channel Adapter
14.5. FTP Outbound Gateway
14.6. FTP Session Caching
14.7. RemoteFileTemplate
15. GemFire Support
15.1. Introduction
15.2. Inbound Channel Adapter
15.3. Continuous Query Inbound Channel Adapter
15.4. Outbound Channel Adapter
15.5. Gemfire Message Store
15.6. Gemfire Lock Registry
15.7. Gemfire Metadata Store
16. HTTP Support
16.1. Introduction
16.2. Http Inbound Gateway
16.3. Http Outbound Gateway
16.4. HTTP Namespace Support
16.5. Timeout Handling
16.6. HTTP Proxy configuration
16.7. HTTP Header Mappings
16.8. HTTP Samples
16.8.1. Multipart HTTP request - RestTemplate (client) and Http Inbound Gateway (server)
17. JDBC Support
17.1. Inbound Channel Adapter
17.1.1. Polling and Transactions
17.1.2. Max-rows-per-poll versus Max-messages-per-poll
17.2. Outbound Channel Adapter
17.3. Outbound Gateway
17.4. JDBC Message Store
17.4.1. The Generic JDBC Message Store
17.4.2. Backing Message Channels
17.4.3. Initializing the Database
17.4.4. Partitioning a Message Store
17.5. Stored Procedures
17.5.1. Supported Databases
17.5.2. Configuration
17.5.3. Common Configuration Attributes
17.5.4. Common Configuration Sub-Elements
17.5.5. Defining Parameter Sources
17.5.6. Stored Procedure Inbound Channel Adapter
17.5.7. Stored Procedure Outbound Channel Adapter
17.5.8. Stored Procedure Outbound Gateway
17.5.9. Examples
18. JPA Support
18.1. Supported Persistence Providers
18.2. Java Implementation
18.3. Namespace Support
18.3.1. Common XML Namespace Configuration Attributes
18.3.2. Providing JPA Query Parameters
18.3.3. Transaction Handling
18.4. Inbound Channel Adapter
18.4.1. Configuration Parameter Reference
18.5. Outbound Channel Adapter
18.5.1. Using an Entity Class
18.5.2. Using JPA Query Language (JPA QL)
18.5.3. Using Native Queries
18.5.4. Using Named Queries
18.5.5. Configuration Parameter Reference
18.6. Outbound Gateways
18.6.1. Common Configuration Parameters
18.6.2. Updating Outbound Gateway
18.6.3. Retrieving Outbound Gateway
18.6.4. JPA Outbound Gateway Samples
19. JMS Support
19.1. Inbound Channel Adapter
19.1.1. Transactions
19.2. Message-Driven Channel Adapter
19.3. Outbound Channel Adapter
19.3.1. Transactions
19.4. Inbound Gateway
19.5. Outbound Gateway
19.5.1. Attribute Reference
19.6. Mapping Message Headers to/from JMS Message
19.7. Message Conversion, Marshalling and Unmarshalling
19.8. JMS Backed Message Channels
19.9. Using JMS Message Selectors
19.10. JMS Samples
20. Mail Support
20.1. Mail-Sending Channel Adapter
20.2. Mail-Receiving Channel Adapter
20.3. Mail Namespace Support
20.4. Email Message Filtering
20.5. Transaction Synchronization
21. MongoDb Support
21.1. Introduction
21.2. Connecting to MongoDb
21.3. MongoDB Message Store
21.3.1. MongodDB Channel Message Store
21.4. MongoDB Inbound Channel Adapter
21.5. MongoDB Outbound Channel Adapter
22. MQTT Support
22.1. Introduction
22.2. Inbound (message-driven) Channel Adapter
22.3. Outbound Channel Adapter
23. Redis Support
23.1. Introduction
23.2. Connecting to Redis
23.3. Messaging with Redis
23.3.1. Redis Publish/Subscribe channel
23.3.2. Redis Inbound Channel Adapter
23.3.3. Redis Outbound Channel Adapter
23.3.4. Redis Queue Inbound Channel Adapter
23.3.5. Redis Queue Outbound Channel Adapter
23.3.6. Redis Application Events
23.4. Redis Message Store
23.4.1. Redis Channel Message Stores
23.5. Redis Metadata Store
23.6. RedisStore Inbound Channel Adapter
23.7. RedisStore Outbound Channel Adapter
23.8. Redis Outbound Command Gateway
23.9. Redis Lock Registry
24. Resource Support
24.1. Introduction
24.2. Resource Inbound Channel Adapter
25. RMI Support
25.1. Introduction
25.2. Outbound RMI
25.3. Inbound RMI
25.4. RMI namespace support
26. SFTP Adapters
26.1. Introduction
26.2. SFTP Session Factory
26.2.1. Configuration Properties
26.3. SFTP Session Caching
26.4. RemoteFileTemplate
26.5. SFTP Inbound Channel Adapter
26.6. SFTP Outbound Channel Adapter
26.7. SFTP Outbound Gateway
26.8. SFTP/JSCH Logging
27. Stream Support
27.1. Introduction
27.2. Reading from streams
27.3. Writing to streams
27.4. Stream namespace support
28. Syslog Support
28.1. Introduction
28.2. Syslog <inbound-channel-adapter>
28.2.1. Example Configuration
29. TCP and UDP Support
29.1. Introduction
29.2. UDP Adapters
29.3. TCP Connection Factories
29.3.1. TCP Caching Client Connection Factory
29.3.2. TCP Failover Client Connection Factory
29.4. TCP Connection Interceptors
29.5. TCP Connection Events
29.6. TCP Adapters
29.7. TCP Gateways
29.8. TCP Message Correlation
29.8.1. Overview
29.8.2. Gateways
29.8.3. Collaborating Outbound and Inbound Channel Adapters
29.8.4. Transferring Headers
29.9. A Note About NIO
29.10. SSL/TLS Support
29.10.1. Overview
29.10.2. Getting Started
29.10.3. Advanced Techniques
29.11. IP Configuration Attributes
29.12. IP Message Headers
30. Twitter Support
30.1. Introduction
30.2. Twitter OAuth Configuration
30.3. Twitter Template
30.4. Twitter Inbound Adapters
30.4.1. Inbound Message Channel Adapter
30.4.2. Direct Inbound Message Channel Adapter
30.4.3. Mentions Inbound Message Channel Adapter
30.4.4. Search Inbound Message Channel Adapter
30.5. Twitter Outbound Adapter
30.5.1. Twitter Outbound Update Channel Adapter
30.5.2. Twitter Outbound Direct Message Channel Adapter
30.6. Twitter Search Outbound Gateway
31. Web Services Support
31.1. Outbound Web Service Gateways
31.2. Inbound Web Service Gateways
31.3. Web Service Namespace Support
31.4. Outbound URI Configuration
32. XML Support - Dealing with XML Payloads
32.1. Introduction
32.2. Namespace Support
32.2.1. XPath Expressions
Providing Namespaces (Optional) to XPath Expressions
Using XPath Expressions with Default Namespaces
32.3. Transforming XML Payloads
32.3.1. Configuring Transformers as Beans
UnmarshallingTransformer
MarshallingTransformer
XsltPayloadTransformer
ResultTransformers
32.3.2. Namespace Support for XML Transformers
32.3.3. Namespace Configuration and ResultTransformers
32.4. Transforming XML Messages Using XPath
32.5. Splitting XML Messages
32.6. Routing XML Messages Using XPath
32.6.1. XML Payload Converter
32.7. XPath Header Enricher
32.8. Using the XPath Filter
32.9. #xpath SpEL Function
32.10. XML Validating Filter
33. XMPP Support
33.1. Introduction
33.2. XMPP Connection
33.3. XMPP Messages
33.3.1. Inbound Message Channel Adapter
33.3.2. Outbound Message Channel Adapter
33.4. XMPP Presence
33.4.1. Inbound Presence Message Channel Adapter
33.4.2. Outbound Presence Message Channel Adapter
33.5. Advanced Configuration
V. Appendices
A. Spring Expression Language (SpEL)
A.1. Introduction
A.2. SpEL Evaluation Context Customization
A.3. SpEL Functions
A.4. PropertyAccessors
B. Message Publishing
B.1. Message Publishing Configuration
B.1.1. Annotation-driven approach via @Publisher annotation
B.1.2. XML-based approach via the <publishing-interceptor> element
B.1.3. Producing and publishing messages based on a scheduled trigger
C. Transaction Support
C.1. Understanding Transactions in Message flows
C.1.1. Poller Transaction Support
C.2. Transaction Boundaries
C.3. Transaction Synchronization
C.4. Pseudo Transactions
D. Security in Spring Integration
D.1. Introduction
D.2. Securing channels
E. Spring Integration Samples
E.1. Introduction
E.2. Where to get Samples
E.3. Submitting Samples or Sample Requests
E.4. Samples Structure
E.5. Samples
E.5.1. Loan Broker
E.5.2. The Cafe Sample
E.5.3. The XML Messaging Sample
F. Configuration
F.1. Introduction
F.2. Namespace Support
F.3. Configuring the Task Scheduler
F.4. Error Handling
F.5. Annotation Support
F.6. Message Mapping rules and conventions
F.6.1. Simple Scenarios
F.6.2. Complex Scenarios
G. Additional Resources
G.1. Spring Integration Home
H. Change History
H.1. Changes between 3.0 and 4.0
H.2. Changes Between 2.2 and 3.0
H.2.1. New Components
HTTP Request Mapping
Spring Expression Language (SpEL) Configuration
SpEL Functions Support
SpEL PropertyAccessors Support
Redis: New Components
Header Channel Registry
MongoDB support: New ConfigurableMongoDbMessageStore
Syslog Support
'Tail' Support
JMX Support
TCP/IP Connection Events and Connection Management
Inbound Channel Adapter Script Support
Content Enricher: Headers Enrichment Support
H.2.2. General Changes
Message ID Generation
<gateway> Changes
HTTP Endpoint Changes
Jackson Support (JSON)
Chain Elements 'id' Attribute
Aggregator 'empty-group-min-timeout' property
Persistent File List Filters (file, (S)FTP)
Scripting Support: Variables Changes
Direct Channel Load Balancing configuration
PublishSubscribeChannel Behavior
FTP, SFTP and FTPS Changes
'requires-reply' Attribute for Outbound Gateways
AMQP Outbound Gateway Header Mapping
Stored Procedure Components Improvements
Web Service Outbound URI Configuration
Redis Adapter Changes
Advising Filters
Advising Endpoints using Annotations
ObjectToStringTransformer Improvements
JPA Support Changes
Delayer: delay expression
JDBC Message Store Improvements
IMAP Idle Connection Exceptions
Message Headers and TCP
JMS Message Driven Channel Adapter
RMI Inbound Gateway
XsltPayloadTransformer
H.3. Changes between 2.1 and 2.2
H.3.1. New Components
RedisStore Inbound and Outbound Channel Adapters
MongoDB Inbound and Outbound Channel Adapters
JPA Endpoints
H.3.2. General Changes
Spring 3.1 Used by Default
Adding Behavior to Endpoints
Transaction Synchronization and Pseudo Transactions
File Adapter - Improved File Overwrite/Append Handling
Reply-Timeout added to more Outbound Gateways
Spring-AMQP 1.1
JDBC Support - Stored Procedures Components
JDBC Support - Outbound Gateway
JDBC Support - Channel-specific Message Store Implementation
Orderly Shutdown
JMS Oubound Gateway Improvements
object-to-json-transformer
HTTP Support
H.4. Changes between 2.0 and 2.1
H.4.1. New Components
JSR-223 Scripting Support
GemFire Support
AMQP Support
MongoDB Support
Redis Support
Support for Spring's Resource abstraction
Stored Procedure Components
XPath and XML Validating Filter
Payload Enricher
FTP and SFTP Outbound Gateways
FTP Session Caching
H.4.2. Framework Refactoring
Standardizing Router Configuration
XML Schemas updated to 2.1
H.4.3. Source Control Management and Build Infrastructure
Source Code now hosted on Github
Improved Source Code Visibility with Sonar
H.4.4. New Samples
H.5. Changes between 1.0 and 2.0
H.5.1. Spring 3 support
Support for the Spring Expression Language (SpEL)
ConversionService and Converter
TaskScheduler and Trigger
RestTemplate and HttpMessageConverter
H.5.2. Enterprise Integration Pattern Additions
Message History
Message Store
Claim Check
Control Bus
H.5.3. New Channel Adapters and Gateways
TCP/UDP Adapters
Twitter Adapters
XMPP Adapters
FTP/FTPS Adapters
SFTP Adapters
Feed Adapters
H.5.4. Other Additions
Groovy Support
Map Transformers
JSON Transformers
Serialization Transformers
H.5.5. Framework Refactoring
H.5.6. New Source Control Management and Build Infrastructure
H.5.7. New Spring Integration Samples
H.5.8. SpringSource Tool Suite Visual Editor for Spring Integration