Developers can now use these popular, dev-friendly tools with mainframe applications. Join this session to learn how to use GitHub and VS Code with mainframe-native code and languages like COBOL. For developers already familiar with these tools, mainframe development becomes more like other platforms. For mainframe developers new to these tools, combining their productivity and collaboration benefits with access to a broad array of devops tool opens a world of possibilities. The presenters will demonstrate GitHub with the Git bridge to CA Endevor, the dominant mainframe-native SCM, allowing next-generation developers to work alongside their peers who use traditional tools. The Zowe open source extension for Visual Studio Code, which enables additional interactions with the mainframe without ever seeing a green screen, will also be demonstrated.

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Using GitHub and Visual Studio Code for
Mainframe Development

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Vaughn Marshall
Product Manager, CA Endevor
Vaughn.Marshall@broadcom.com
https://www.linkedin.com/in/vaughn-marshall/
Broadcom
Philip Holleran
Solutions Engineer
pholleran@github.com
https://www.linkedin.com/in/philipholleran/
GitHub

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Broadcom at a Glance
One of the
industry’s broadest
IP portfolios with
~23,000
patents
Category-
Leading
Semiconductor &
Infrastructure Software
Products
FY18 net
revenue of
$20.8B*
$3.8B*
investment in
R&D
* FY18 Non-GAAP revenue and FY18 R&D investment of Broadcom Limited.

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GitHub: The home for developers
• 44+ Million developers
• 144+ Million repositories
• 3+ Million organizations
• Fortune Global 50
– 70% contributed to OSS in ‘19
– 60% building software with GitHub
Enterprise

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Overview
Mainframe
COBOL

6. Rumors of my demise
have been greatly exaggerated
- The Mainframe

7. Hype: new architectures will completely
displace prior

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9. Reality: new architectures are
opportunities to optimize

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Throughput Reliability Scalability
Why Mainframe?

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Of mainframe orgs
experienced MIPS
growth 2
Of the world’s
production workloads
run on mainframes 1
68%84%
Of all global credit card
transactions supported by
mainframes 1
87%
Of the world’s top
100 banks rely on
mainframe 3
92
1. IBM Mainframe ushers in a new era of data protection, July 2017: https://www-03.ibm.com/press/uk/en/pressrelease/52824.wss
2. New: Arcati Mainframe Yearbook 2019: http://www.arcati.com/newyearbook19/newyearbook.pdf
3. SHARE, “Mainframe Matters: How Mainframes Keep the Financial Industry Up and Running”, April 2018: https://www.share.org/blog/mainframe-matters-
how-mainframes-keep-the-financial-industry-up-and-running
The Mainframe Backbone

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People Process Technology
The Mainframe Backbone

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• 7% of mainframe devs under 30
• 29% are over 60
A skills shortage is looming
Mainframe Challenge: People

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PLAN RELEASEDEVELOP TEST OPERATE
WAIT
WAIT
WAIT
WAIT
Mainframe Challenge: Process

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• TSO / ISPF interfaces
• JCL / Rexx for build and
system testing
• Platform–dependent tools
Mainframe Challenge: Tools

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• Eclipse IDE
• Vendor plugins
• Proprietary tools
Mainframe Challenge: Tools

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• Eclipse IDE
• New devs must learn unique:
– Tooling
– Processes
– in addition to COBOL
Mainframe Challenge: Onboarding

18. What other platform requires
that much specialization?

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• Mainframe continues to modernize
– Virtualization
– Containerization
– Scalability
• What hasn’t modernized is the dev tooling / process
Modernization

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• Attract the new generation of developers to mainframe
– easy on-board, common skill-set
• Support common practices for end-to-end enterprise application
development
– Mobile to Mainframe
• Offer similar developer experience across all platforms
– Distributed, Cloud, Mobile, Mainframe
• Leverage popular, proven, collaboration practices
Why Git for Mainframe?

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• All code in one place
– Distributed & mainframe
• Collaborative workflow
• End to end traceability
• Automation
• Integrate with other tooling
Why GitHub for Mainframe?

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• Automate your SDLC workflow
– Respond to events
– Execute code on runners
• Community-centric
– Use community actions
– Develop internal actions
• Work in conjunction with Zowe to integrate GitHub &
Mainframe
GitHub Actions

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• Heavy investment in mainframe software asset
management
– Millions of assets
– Many may not be structured for newer SCMs
– Decades of history under management
• Mainframe Lifecycle Automation
– Years of customizations and hooks
– Critical to business processes & governance
Building on Mainframe Bedrock

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• Replace or Interface?
• Interface
– Leverage heritage, don’t start over
– Embrace “best of breed” tooling across platforms
– Enable Enterprises to standardize on a common
stack
Modernization: Approaches

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• Rather than start over – interface to modern
tools
• Devs can use common tools to visualize what’s
happening on the mainframe
– Organizations can standardize across the enterprise
– NO niche tools for mainframe!
• Teams can layer additional automation
• Best of all – NO conversion
Interface Approach - High Value, Low risk

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• Extensible framework for connecting applications
and tools to z/OS mainframe data and
applications.
• Goal: z/OS mainframe an integrated and agile
platform
• First OSS project on z/OS
Introducing Zowe
Open
Mainframe
Project

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Mainframe
Cloud
Zowe CLI zOSMF
CA Endevor
IBM DB2 CICS
OPS / MVS
CA File Master
Plus
AWS CLI,
Azure CLI,…
TSO
Console
Datasets
Jobs
Zowe CLI – Automating Mainframe

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What about seasoned mainframers?

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Git Connector
Michelle
Application
development
Todd
Enterprise Git Server
Administrator
Carl
Endevor Admin
Bridge for Git: How it works

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Bridge for Git: Overview

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Mapping Git & CA Endevor

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Developer Build & Isolation

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Developer IDE – Visual Studio Code for mainframe
Code4z pack
– Includes: Zowe Explorer, COBOL Language Support, Explorer for Endevor, COBOL
Source Colorizer
– Coming soon: HLASM Language Support, Debug Adapter Protocol extension
– Available on VS Code marketplace
Open source via OMP /
Linux Foundation
Open source via Che4z /
Eclipse Foundation
Open source on GitHub
under MIT license

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DEMO

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Thank You