Native z/OS JSON Parsing and HTTP Services - SHARE

[Pages:55]Native z/OS JSON Parsing and HTTP Services

Steve Warren IBM

email: swarren@us. : @StevieWarr2

August 11, 2015 Session 17791

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Agenda

? Web applications (quick overview)

? What and why of JSON? ? What is REST? ? What is missing on z/OS?

? Introduction to the toolkit ? z/OS JSON Parser details

? Usage

? z/OS HTTP/HTTPS protocol enabler details

? Usage ? Problem determination

? Reference material

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Web applications (JSON, HTTP and REST)

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Moving Beyond the Browser

Businesses Are Evolving

stores

(800) ###s

web sites

Web APIs are the new, fast-growing business channel

Not having an API today is like not having a Web Site in the 90s

""$$77bbn nwowrthorotfhiteomfsioten meBsayothnroeugBhaAyPItsh"rough APIs"

MMaarkrkCaCrgaersg(eEsba(yECbTaOy) CTO)

The API which has easily 10 times more traffic then the website, has been really very important to us."

Biz Stone (Co-founder, Twitter)

""TThheeaaddopotpiotnioonf Aomf Aazmoan'zsoWn'esbWseervbicsees risviccuersreinstlycurrently driving more network darcivtiinvgitymtohreenneetwveorrkytahcitnivgityAtmheanzeovnerdytoheinsg tAhmroauzgonh their traditional web sites."

dJeofef sBathr r(oAumgahzothneeirvatrnagdeiltiisot)na/ Dl wioenbHsinitcehsc.l"iffe (Journalist)

Jeff Bar (Amazon evangelist) / Dion Hinchcliffe (Journalist)

Web 1994 was the "get me a domain and a page" era. Web 2000 was the "make my page(s) interactive and put people on it" era. Web 2010 is the "get rid of pages and glue APIs and people together" era.

Robert Scoble (Author of tech blog Scobleizer)

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Growth in Publically Published Web APIs

16000 14000 12000 10000

8000 6000 4000 2000

1 0

Public WebAPIs Available

13860 12534

10302 8226

5018

WebAPIs

2418 299 593 865 1546

2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

Source: Programmable Web (some intermediate numbers extrapolated)

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JSON : The Exchange Notation For Mobile Devices

JSON Sample {"name" : "Adele", "breed": "Poodle", "dob": 2011-05-01}

Client JavaScript

Web API

Protocol HTTP (REST)

JSON JSON

JSON

JSON standardized as part of ECMAScript in December 1999 JSON has reached all tiers

Middle Tier

Relational Store

XML /JSON Store / Persistence layer

? With the increased popularity of Web APIs (literally thousands of Web APIs) and the use of Mobile Devices

? User Interfaces usually have a JavaScript component

? JSON is the data structure for JavaScript

? JSON is integrated with JavaScript and Java and other languages (through libraries)

? The JSON trend is developer driven and is reaching all tiers (UI, Middle Tier, Data Tier)

Aspects of JSON:

No namespaces

No schemas

No mixed content support Mixed content example: hello Adelehow are you

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JSON Penetration: Web API Trend Towards JSON

Programmable Web, Jan 2012

26 Weather APIs, 12 Support JSON

"Weather has always been a popular category with 26 Weather APIs listed in our directory. While XML is still the leading data format used, the trend of JSON becoming the Developer's Choice over the last few years is also reflected in the Weather category"

Programmable Web, December 2012

1 in 5 APIs said "Bye XML" - JSON is popular, at least when it comes to API data formats. Of the new APIs we added to our directory, one in four supports only JSON (Dec 2012). YouTube API, for example, switched to JSON-only

Programmable Web, January 2012

Library of Congress, Prints and Photos API goes JSON - The Library of Congress, with their Prints and Photographs API has finally taken the REST API plunge. If this government institution can do it, maybe you can convince the head of your IT department that APIs are a good idea too.

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