ibm power systems 1q’15 launch messaging and...

9/22/2016

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Welcome to the Waitless World

© 2015 IBM Corporation

Constellations on i –Orion, Git and RPG

Jesse Gorzinski – [email protected]

IBM i Emerging Solutions



Git – what is it?

• Linus Torvalds – inventor of Linux wanted a better source control system – so

he wrote one

• Very popular in the open source community and increasingly in enterprises

• Distributed Version Control System

• Some distinctives

• NOT a server! Just a simple executable

• Stores all of its meta data in one .git directory at the root of your

repository

• Very fast !

mailto:[email protected]

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Snapshots, Not Differences -> Nearly every operation

local -> FAST!!

From https://git-scm.com/book/en/v2/Getting-Started-Git-Basics

Other VCS store deltas from the

original

Git stores full copies (links, compressed)

Everyone has a full repository

Nearly every operation is local

Full redundancy with all other

repositories



Hash codes

• All content is check-summed into a SHA-1 hash code

• From then on the file is referred to by that hash code

• Probability of collision is very small ~ # of sand grains on earth

• => the content is tracked so empty directories are not

• Commits are also referred to by a hash code

https://git-scm.com/book/en/v2/Getting-Started-Git-Basics

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Small & Fast!

source: https://git-scm.com/about/small-and-fast



High-level flow

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Staging area?

• Before the commit, files get "staged"

• Why?

– Commit only one of several changed files

– Commit only a portion of a changed file!



Branching and Merging

image source= https://git-scm.com/about

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Cherry-picking

source: https://git-scm.com/book/en/v2/Distributed-Git-Maintaining-a-Project



Cherry-picking

source: https://git-scm.com/book/en/v2/Distributed-Git-Maintaining-a-Project

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Git hooks

• To install a git hook, just put an executable file in the hooks directory

• The name of the file is the hook

• Example, to install a post-receive hook, do this from the .git/hooks directory

(depending on how you created the repository, the hooks directory may need

to be created)

• Then, populate the file with the commands needed



git hooks (https://git-scm.com/docs/githooks)

• applypatch-msg

• pre-applypatch

• post-applypatch

• pre-commit

• prepare-commit-msg

• commit-msg

• post-commit

• pre-rebase

• post-checkout

• post-merge

• pre-push

• pre-receive

• update

• post-receive

• post-update

• push-to-checkout

• pre-auto-gc

• post-rewrite

• rebase

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Git hook example



bit.ly/5733sc1-op1 - 5733SC1 instructions

ssh-keygen contained in 5733SC1 IBM Portable Utilities for i5/OS

*BASE & Option 1

$ ssh-keygen$ ls ~/.sshauthorized_keys id_rsa id_rsa.pub known_hosts

ssh-keygen creates necessary files

Copy/paste id_rsa.pub into GitHub/Bitbucket web interface

$ cat ~/.ssh/id_rsa.pubssh-rsa AAAABxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxpomIpqNexxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxLUMp4zhi4BqGHIl [email protected]

To communicate with repository via SSH, you need to give them

your public SSH key for password-less authentication.

SSH

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Where can I get Git?

• Can download to your PC

• Can add to your Eclipse

• Can use http://github.org right now and have it hosted in the cloud

• this how a lot of open source is developed

• Or ……

• Install it on your IBM i !

• 5733-OPS option 6

• And then install PTF

• Coming soon

• Follow DeveloperWork Page on 5733OPS



Orion

Powerful

Web Editor

- Supports

open source

languages

AND free form

RPG

Zero install – runs in the browser – on any platform –

cheaper, easier than SEU

Compact

Git UI

- Strong git

source

control

support in

elegant and

powerful

single page

layout

Versatile theming – editor can be light, dark – by customization

or importing themes

http://github.org/

https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/IBM%20i%20Technology%20Updates/page/Open%20Source%20Technologies

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Free form RPG in Orion!



• Aaron Bartell published an article just recently on Orion/RPG

• He told me that he had the most screen caps in any article he has ever

written

• Detailed scenario of how to develop in RPG using Orion

Industry pundits have already published articles

http://www.mcpressonline.com/rpg/techtip-shoot-for-orion-with-your-rpg.html

http://www.mcpressonline.com/rpg/techtip-shoot-for-orion-with-your-rpg.html

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Think through the implications of editing RPG in a

browser

• You can now edit RPG on any device that has a browser

• Windows

• Linux

• Mac

• Tablet

• Phone

• Etc.

• It requires no installation per user



Orion - Language Support

• First class editor support for

• JavaScript

• HTML

• CSS

• Basic editing for

• Free form RPG

• Python

• PHP

• C/C++

• Ruby

• Etc.

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Orion is actively being developed – key part of IBM’s

strategic BlueMix



Where can I get Orion?

• See https://wiki.eclipse.org/Orion

• Can download to your PC

• Can use http://orionhub.org right now and have it hosted in the

cloud

• Or ……

• Install it on your IBM i !

• 5733-OPS option 8

• And then install PTF

• Coming soon

• Follow DeveloperWork Page on 5733OPS

• Only this version supports free form RPG

https://wiki.eclipse.org/Orion

http://orionhub.org/

https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/IBM%20i%20Technology%20Updates/page/Open%20Source%20Technologies

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RDi and Git

• Eclipse has a free extension to support

Git called EGit

• Anyone with Eclipse can install it from

the Help->Eclipse Marketplace…

• If you have RDi Java Modernization

Edition – it is an optional component



Think through the implications of Orion + Git

Here's a scenario:

Jesse is travelling. He's at the airport and just has a tablet and his

phone. He receives an urgent call from Edmund that there's a

bug in his code and Sam's pay is incorrect. He logs onto Orion,

fixes the bug, and pushes the change back to Git. Back at the

office, Edmund fetches the change from Git into an i Project in

RDi and recompiles the program. Sam's pay is fixed and the

problem didn't have to wait until Jesse returned from his trip.

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Edit RPG to change Sam’s pay – original pay 50000.99



Sam’s pay is edited – now 50000.33

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Git view to commit the change



Push change using Git

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Change is now in the Git repository history



Fetch from Git into RDi

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Change made in tablet is now in RDi iProject where it can be built and run!



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Demo

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