This deck covers why API Driven integrations are important, API and Integration strategy and approaches, WSO2 Integration suite functionality to support API driven Integration, and how to successfully implement API driven Integration

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Role of Integration in an API Driven
World
Vidura Gamini Abhaya
Senior Director, Solutions Architecture - WSO2
INTEGRATION

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Story of SuperCity

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Challenge from Digital Competition

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New Strategy
API Management solution along with some broad integration capabilities
Reuse existing systems
Cost Savings
Faster time to market
Work with legacy backend
systems
Room for future expansions

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SuperCity API Initiative
API
Existing System
Mobile
App
Website

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API Driven Development

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Why APIs ?
● APIs are a key enabler of digital enterprise
● APIs acts as gateways to enterprise digital assets
● Allows the enterprise to build new digital consumer experiences within
accelerated time frame
● They open up new revenue channels and expand existing revenue
channels
● APIs enable the enterprise to cater for future expansions

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Code first design
Code First vs API First Design
Back-end
Team
ImpI 1
API
2
Client
A
Client
B
...
SDK SDK ...
3
Front-end
Teams
API first design
Front-end
Teams
Back-end
Team
API API API
Mock Mock Mock 1
Client
A
Client
B
...
SDK SDK ...
ImpI 2
2
ImpI ImpI
Data Services

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API Façade
IoT
Mobile
Apps
Web
API Gateway
API Façade
DatabaseLegacy System
Content
Management
CRM/HR/Inventory
Systems
SaaS

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API Façade
System 1
API 1
System 2
API 2
Composite API
System APIs
Orchestration APIs

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Orchestration APIs
Invoke
Policy / discovery
Enrich Publish DB write Transform Update
Policy
Orchestration API
CRM
API 1 Queue
DB
REST
API

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API Façade
IoT
Mobile
Apps
Web
API Gateway
API Façade
DatabaseLegacy System
Content
Management
CRM/HR/Inventory
Systems
SaaS
API A API B
Orchestration API
Orchestration APIs
System System

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SuperCity’s Digital Story

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SuperCity API Initiative
API
Existing System
Mobile
App
Website

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Building the API’s
Price
Update
System
Inventory
System
Reservation
System
PoS
System
Store 1
Store 2
Store 3
Mobile App
Website
API
API
Delivery System
API
Payment System
API
API
API

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Building the API’s
Price
Update
System
Inventory
System
Reservation
System
PoS
System
Store 1
Store 2
Store 3
Mobile App
Website
API
Delivery System
API
Payment System
API
Managed API
API
API
API

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Types of Digital Assets in Enterprises
● Application silos that hold key business capabilities of the enterprise
● Enterprise SaaS applications
● Enterprise Data stored in various storage mechanisms including RDBMS,
Files, Spreadsheets, CSV files ...
● Applications that execute the process flows in the enterprise
● Systems based on proprietary protocols and data formats

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Key Integration Capabilities
● API and Service Hosting
● Orchestration of services and apis
● Routing
● Transformations
● Protocol switching and ability to process different data formats
● Parallel processing

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Integration Strategy
• Discover the ecosystems and Application silos
• Understand the data
• Understand the capabilities
• Identify the possible integration points for each system
• API enable the identified systems
• Implement the integration logic

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WSO2 Enterprise Integrator

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A Hybrid Integration Platform
Connectivity / Integration: anything-to-anything
WSO2 EIConnectors
Web services
APIs
Filesystems
Messaging systems
Business
Applications
Partners’ systems
Data
Supporting Standards
• HTTP(S)
• JMS, AMQP, MQ
• Websockets
• VFS
• FIX, HL7
• JSON, SOAP
• XSLT, XPATH, Smooks
• JDBC, CSV, NO-SQL
• OAuth, XACML, WS-Sec

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Enterprise Integrator Capabilities

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API Integration - Integrator Profile
A lightweight, high performance integration runtime
• Comprehensive REST, SOAP, and WS-* support
• Support for File, Data, Messaging based integrations
• SAP, FIX, and HL7 - Domain specific solutions
• Configuration driven
• Extensible and Scalable
• 100% coverage of all EI patterns

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Data Integration - Integrator Profile
Building service abstractions on top of disparate data sources
SQL
SOAP/REST/OData
XML/JSON
Integrator Runtime
WSO2 EI

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Business Processes - BPS Profile
Processes/Workflows with BPMN, BPEL, Human Tasks
Application α
Application β
Defined processes and workflows
which may also consist of human
tasks
Business Process Execution
as a Service
WSO2 EI
Application N
Process Initiation
Results/Decisions

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Micro Integrator
• Can be to used to create composite services using atomic services
• Separate distribution that can be used in a cloud native environment
• Users can use the same EI tooling to create artifacts
• Deploy few composite integration services per micro integration
• Command line tool for management tasks
• Fast startup time (5s)
• Small distribution size of 150 mb
• K8S Integration
https://github.com/wso2/micro-integrator

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Micro-integrations
Consumer 1
API Service P API Service Q API Service R API Service S
Consumers
Consumer 2 Consumer 3
μ Service A
Proprietary &
Legacy
Systems
Web API /
SaaS
API Services/
Edge Services
Composite Service/
Integration Services
Core Services/
Atomic Services μ Service I
μ Service H
μ Service J
μ Service E
μ Service C
μ Service D
μ Service G
μ Service B
μ Service F
API
Management

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WSO2 EI Graphical Tooling
• Drag and Drop Visual Editor
• Develop, Deploy, Test, Debug
capabilities from the editor
• Built in micro Integrator runtime for
testing and debugging
• Export artifacts as a docker image
with micro integration
• Integration templates for rapid
development

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Integration Analytics
Dashboards for Transaction Analytics and Monitoring
Overall setup
• Overall Throughput (in TPS)
• Overall Message Count
APIs, proxies, endpoints specific
• Request Count
• Message Count
• Message Latency
• Explore Messages
• Explore Message Flows

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Other Analytics Integrations
• ELK Stack
• Prometheus

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Continuous Integration and Continuous Delivery
Continuous Integration
Server
Source Control
System
WSO2 EI
WSO2 EI
Environment 1
WSO2 EI
WSO2 EI
Environment 2
Continuous Test Server
Integration
artifacts
IDE IDEIDE

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Solving the Integration
Requirements with WSO2 EI

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Integration with Systems that Talk in Standard
Protocols
Support for a wide range of
standard protocols
• HTTP/HTTPS
• JMS
• AMQP
• FTP/SFTP/FTPS/SMB
• SMTP/IMAP
• MQTT
• KAFKA
• And many more
SMTP
HTTP
JMS
FTP
Websocket

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Integration with Systems that Talk in Standard
Protocols
HTTP/API
Public Private Organization
Existing
System
FTP

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Integration with Systems that Talk in
Non-standard/ Proprietary Protocols
• Built in support for well-known proprietary protocols
E.g. SAP
• Easy to extend the functionality to introduce new protocols
HTTP/API
Public Private Organization
Existing
System
Non Standard
Protocol
Connector

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Integration with Files-based Systems
● WSO2 Enterprise Integrator supports a wide range of file transferring
protocols such as FTP, SFTP, FTPS, and SMB
○ Listen to a location, pick files, and invoke a web API using the content of the files
File HTTP
Web API
Invocation
Existing Legacy
System

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Integration with Systems that Use Databases
Expose databases or other data sources as services
HTTP

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Extension Points
• Script mediator
• Connectors
• Custom/Class mediators
• API handlers
• Custom tasks
• Custom inbound endpoints
• Custom XPath functions
• Message builders and formatters
• Transport listeners and senders
• Custom message
stores/processors

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Conclusion
● Why API Driven integrations are important
● API and Integration strategy and approaches
● WSO2 Integration suite functionality to support API driven Integration
● How to successfully implement API driven Integration

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THANK YOU
wso2.com