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WSO2 Enterprise Integrator Documentation

Enterprise Integrator Documentation

Exported on 08/10/2018

Enterprise Integrator Documentation – WSO2 Enterprise Integrator Documentation

– 2

Table of Contents

1 Get started...................................................................................................... 23

2 Introduction ................................................................................................... 23

2.1 Overview.............................................................................................................................. 23

2.1.1 Short-running integration flows.......................................................................................................................23

2.1.2 Long-running business processes....................................................................................................................24

2.2 About this Release .............................................................................................................. 26

2.2.1 What's new in this release ................................................................................................................................27

2.2.1.1 Introducing the Micro Integrator profile..........................................................................................................27

2.2.1.2 Improving WSO2 EI Tooling..............................................................................................................................27

2.2.2 Compatible WSO2 product versions ................................................................................................................27

2.2.3 Fixed issues .......................................................................................................................................................27

2.2.4 Known issues.....................................................................................................................................................27

3 Enterprise Integration Patterns .................................................................... 28

4 Quick Start Guide ........................................................................................... 29

4.1 Routing requests based on message content ................................................................... 29

4.1.1 Configuring WSO2 EI .........................................................................................................................................29

4.1.2 Sending requests to WSO2 EI ...........................................................................................................................32

4.2 Additional Capabilities ....................................................................................................... 33

4.2.1 Exposing a datasource as a service..................................................................................................................33

4.2.2 Sending messages securely.............................................................................................................................37

4.2.3 Defining a BPMN process..................................................................................................................................41

4.2.4 Other WSO2 EI capabilities...............................................................................................................................43

5 Key Concepts.................................................................................................. 43

5.1 Enterprise Service Bus (ESB) concepts .............................................................................. 43

5.1.1 Message routing ................................................................................................................................................43

5.1.2 Message filtering ...............................................................................................................................................44

5.1.3 Message transformation..................................................................................................................................45

5.1.4 Content enriching .............................................................................................................................................46

5.1.5 Protocol switching ............................................................................................................................................46

5.1.6 Service chaining ................................................................................................................................................46

5.1.7 Message storing and forwarding......................................................................................................................47

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5.1.8 Load balancing..................................................................................................................................................48

5.1.9 Message entry points ........................................................................................................................................49

5.1.9.1 Proxy services....................................................................................................................................................49

5.1.9.2 REST APIs...........................................................................................................................................................49

5.1.9.3 Inbound endpoints ...........................................................................................................................................50

5.1.9.4 Tasks..................................................................................................................................................................50

5.1.10 Message processing units.................................................................................................................................50

5.1.10.1 Mediators...........................................................................................................................................................50

5.1.10.2 Sequences .........................................................................................................................................................50

5.1.11 Message exit points..........................................................................................................................................50

5.1.12 Message stores and processors........................................................................................................................51

5.1.13 Connectors ........................................................................................................................................................51

5.1.14 Transports .........................................................................................................................................................51

5.1.15 Message builders and formatters.....................................................................................................................51

5.1.16 Applying security to artifacts...........................................................................................................................52

5.1.17 Logging messages.............................................................................................................................................52

5.1.18 Message tracing ................................................................................................................................................52

5.1.19 Debugging mediation .......................................................................................................................................52

5.1.20 Enterprise Integration Patterns.......................................................................................................................52

5.1.21 ESB tooling ........................................................................................................................................................52

5.1.22 Developing and running microservices ...........................................................................................................53

5.1.23 Container-friendly integration .........................................................................................................................53

5.2 Business process concepts................................................................................................. 53

5.2.1 Business process...............................................................................................................................................53

5.2.1.1 Process Instance ...............................................................................................................................................55

5.2.2 Abstract and executable processes .................................................................................................................55

5.2.3 Orchestration vs. choreography.......................................................................................................................56

5.2.4 Asynchronous and synchronous communication...........................................................................................56

5.2.5 Business process modelling .............................................................................................................................56

5.2.6 Process execution .............................................................................................................................................56

5.2.7 Business Process Modelling Notation (BPMN) ................................................................................................57

5.2.7.1 Start event.........................................................................................................................................................58

5.2.7.2 User task............................................................................................................................................................58

5.2.7.3 End event...........................................................................................................................................................58

5.2.7.4 More constructs.................................................................................................................................................58

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5.2.8 BPMN Explorer ..................................................................................................................................................59

5.2.9 Business Process Execution Language (BPEL) ................................................................................................59

5.2.10 Human tasks......................................................................................................................................................59

5.2.11 Business process tooling ..................................................................................................................................59

5.3 Data services concepts ....................................................................................................... 60

5.3.1 Data service.......................................................................................................................................................60

5.3.2 Datasources.......................................................................................................................................................60

5.3.3 RESTful data services........................................................................................................................................60

5.3.4 OData services...................................................................................................................................................60

5.3.5 Datafederation ..................................................................................................................................................60

5.3.6 Distributed transactions...................................................................................................................................60

5.3.7 Batch processing...............................................................................................................................................60

5.3.8 Data transformation .........................................................................................................................................62

5.3.9 Managed data access........................................................................................................................................62

5.3.10 Streaming ..........................................................................................................................................................62

5.3.11 Namespaces ......................................................................................................................................................62

6 Tutorials ......................................................................................................... 62

6.1 Integration Tutorials........................................................................................................... 62

6.1.1 Sending a Simple Message to a Service...........................................................................................................62

6.1.1.1 Sending a Simple Message to a Service Using the ESB Profile.......................................................................62

6.1.1.2 Sending a Simple Message to a Service Using the Micro Integrator ..............................................................81

6.1.2 Sending a Simple Message to a Datasource....................................................................................................85

6.1.2.1 Downloading and set up WSO2 EI....................................................................................................................85

6.1.2.2 Starting WSO2 EI ...............................................................................................................................................85

6.1.2.3 Exposing a datasource through a data service ...............................................................................................85

6.1.2.4 Sending requests to the ESB ............................................................................................................................90

6.1.3 Routing Requests Based on Message Content ................................................................................................91

6.1.3.1 Connecting to the back-end service ................................................................................................................92

6.1.3.2 Mediating requests to the back-end service....................................................................................................94

6.1.3.3 Packaging the artifacts...................................................................................................................................102

6.1.3.4 Starting the Integrator runtime and deploying the artifacts........................................................................103

6.1.3.5 Starting the MSF4J profile ..............................................................................................................................103

6.1.3.6 Sending requests to WSO2 EI .........................................................................................................................103

6.1.4 Transforming Message Content .....................................................................................................................105

6.1.4.1 Creating the deployable artifacts...................................................................................................................106

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6.1.4.2 Packaging the artifacts...................................................................................................................................112

6.1.4.3 Starting the Integrator runtime and deploying the artifacts........................................................................112

6.1.4.4 Starting the MSF4J profile ..............................................................................................................................112

6.1.4.5 Sending requests to the ESB ..........................................................................................................................112

6.1.5 Exposing Several Services as a Single Service...............................................................................................114

6.1.5.1 Connecting to the back-end services.............................................................................................................115

6.1.5.2 Creating the deployable artifacts...................................................................................................................117

6.1.5.3 Packaging the artifacts...................................................................................................................................127

6.1.5.4 Starting the ESB runtime and deploying the artifacts ..................................................................................127

6.1.5.5 Starting the MSF4J profile ..............................................................................................................................127

6.1.5.6 Sending requests to the ESB ..........................................................................................................................127

6.1.6 Storing and Forwarding Messages.................................................................................................................129

6.1.6.1 Setting up the message broker profile...........................................................................................................131

6.1.6.2 Creating the Message Store............................................................................................................................131

6.1.6.3 Creating the Deployable Artifacts ..................................................................................................................132

6.1.6.4 Creating the Response Sequence ..................................................................................................................134

6.1.6.5 Creating the Message Processor ....................................................................................................................137

6.1.6.6 Packaging the artifacts...................................................................................................................................138

6.1.6.7 Starting the Message Broker runtime ............................................................................................................140

6.1.6.8 Starting the MSF4J profile ..............................................................................................................................140

6.1.6.9 Starting the ESB runtime and deploying the artifacts ..................................................................................140

6.1.6.10 Sending requests to the ESB ..........................................................................................................................140

6.1.7 Using the Gmail Connector.............................................................................................................................141

6.1.7.1 Setting up the message broker profile...........................................................................................................142

6.1.7.2 Creating the credentials for using the Gmail Connector ..............................................................................142

6.1.7.3 Importing the Gmail Connector into EI-Tooling............................................................................................143

6.1.7.4 Creating the Deployable Artifacts ..................................................................................................................146

6.1.7.5 Packaging the artifacts...................................................................................................................................152

6.1.7.6 Starting the Message Broker runtime ...........................................................................................................153

6.1.7.7 Starting the MSF4J profile ..............................................................................................................................153

6.1.7.8 Starting the ESB runtime and deploying the artifacts ..................................................................................153

6.1.7.9 Sending requests to the ESB ..........................................................................................................................153

6.1.8 Managing a Business Process.........................................................................................................................154

6.1.8.1 Configuring the Integration artifacts .............................................................................................................155

6.1.8.2 Creating the appointment cancellation process using BPMN......................................................................156