Book Image

WSO2 Developer's Guide

By : Ramón Garrido, Fidel Prieto Estrada
Book Image

WSO2 Developer's Guide

By: Ramón Garrido, Fidel Prieto Estrada

Overview of this book

WSO2 Enterprise Integrator brings together the most powerful servers provided by the WSO2 company for your SOA infrastructure. As an Enterprise Service Bus (ESB), WSO2 Enterprise Integrator provides greater flexibility and agility to meet growing enterprise demands, whereas, as a Data Services Server (DSS), it provides an easy-to-use platform for integrating data stores, creating composite views across different data sources, and hosting data services. Using real-world scenarios, this book helps you build a solid foundation in developing enterprise applications with powerful data integration capabilities using the WSO2 servers. The book gets you started by brushing up your knowledge about SOA architecture and how it can be implemented through WSO2. It will help build your expertise with the core concepts of ESB such as building proxies, sequences, endpoints, and how to work with these in WSO2. Going further, you will also get well-acquainted with DSS data service concepts such as configuring data services, tasks, events, testing, and much more. The book will also cover API management techniques. Along with ESB and DSS, you will also learn about business process servers, the rules server and other components that together provide the control and robustness your enterprise applications will need. With practical use cases, the book covers typical daily scenarios you will come across while using these servers to give you hands-on experience.

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Table of Contents (14 chapters)
Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
Getting Started with SOA and WSO2
Getting Started with SOA and WSO2
SOA principles
SOA organization
Technology for SOA
Downloading WSO2 Enterprise Integrator
WSO2 Update Manager
Installing WSO2 Enterprise Integrator
WSO2 EI Configuration
Summary
2
Developing Integration Projects with WSO2EI Tooling
Developing Integration Projects with WSO2EI Tooling
Installing and running WSO2EI Tooling
Creating carbon projects
Debugging mediation
Data mapping
Summary
3
Building Web Services
Building Web Services
Mediators
Sequences
Proxies
APIs
Inbound endpoints
Tasks
Summary
4
Building Data Services
Building Data Services
Configuring data sources
Create wizard
Creating CRUD data services
Creating data services using WSO2 EI Tooling
Summary
5
Transforming the Content of the Payload
Transforming the Content of the Payload
Creating new content
Change the format of the content
Enrich the message
Message transformation
Summary
6
Conditional Route
Conditional Route
Checking the payload content
Boolean filtering
Multiple filtering
Advanced routing
Summary
7
Quality of Service
Quality of Service
Security
Throttling
Caching
Summary
8
Tasks Scheduling
Tasks Scheduling
Configuring the server
Scheduling integration services
Scheduling data services
Custom tasks
Summary
9
WSO2 Enterprise Integration Logging
WSO2 Enterprise Integration Logging
General enterprise integration logging
Logging the orchestration
Logging per API and per proxy service
Summary
10
WSO2 Enterprise Integration Testing
WSO2 Enterprise Integration Testing
Testing with a built-in tester
Testing with SOAPUI
Other ways of testing
Summary
11
Integrating with VFS
Integrating with VFS
Configuring the server
Reading files
Writing files
Transferring files
File connector
Summary
12
Integrating with JMS - WSO2 EI Message Brokering
Integrating with JMS - WSO2 EI Message Brokering
Creating message queues
Publishing messages to a queue
Consuming messages from a queue
Dead Letter Channel
Connectors
Summary
13
Introduction to Ballerina
Introduction to Ballerina
The Ballerina language history
The main concepts of Ballerina
Ballerina tools
Working with Ballerina
Summary

Data mapping

Data mapping is a very common task when developing services. This task is performed with many integration patterns, some of them quite common, such as the following:

This task entails translating, transforming, or converting data from one data format to another, such as XML to JSON. For instance, we may receive a message in our service in the XML format, and we have to send the information within this XML payload to a JSON endpoint and to an XML endpoint in which the XML format is different from the XML format specified in our service contract.

In such situations...

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