Git & EGit beginner Workshop Learn Git with Eclipse EclipseCon France 5 June 2013 Vincent Lalanne Igor Laborie Matthias Sohn
Git & e git beginner workshop
Jan 19, 2015
Workshop Git for EclipseCon France 2013
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Git & EGit beginner WorkshopLearn Git with Eclipse
EclipseCon France5 June 2013
Vincent LalanneIgor Laborie
Matthias Sohn
The team
Igor Laborie Software Architect at AKKAGit enthusiast
Vincent LalanneSoftware Engineer at AKKA
Matthias Sohn Product Owner at SAP
The Raspberry Pi
http://www.raspberrypi.org/http://elinux.org/RPi_Hub
Model A ~22 €Model B ~33 €
● ARM processor 700 Mhz● RAM: 512Mb ● HDMI, Composite● Ethernet● 2 USB port● SD Card● 26 Pins
Prepare to exercices
RaspberryPi : PiGit / EclipseConOr get EGit-Workshop.zip from an USB stick=> Open index.html with a modern browser
You need an EGit version > v2.2.0=> Install Eclipse Java Juno SR2 if needed.
Exercises are also available at http://ilaborie.github.io/Git--EGit-beginner-workshop
Agenda
● Introducing Git● Working locally● Branches● Remotes● Exam
○ => Win a RaspberryPi B !
Introducing GitGit, JGit and EGit
VCS
A Version Control System● record changes● retrieve a previous version● provide collaborative works
Like SVN, CVS, ClearCase, ...
Central VCS Server
Version Database
CVCS
Computer A
File
Checkout
Computer B
File
Checkout
Version 3
Version 1
Version 2
DVCSServer Computer
Version Database
Version 3
Version 1
Version 2
Computer B
Version Database
Version 3
Version 1
Version 2
File
Computer A
Version Database
Version 3
Version 1
Version 2
File
Git
● easier offline usage● easier to fork and merge (branches)● speed● scalability● a lot of workflow● ...
Git is developer-friendly.Flexibility (with Workflow) is industry-friendly.
JGit & EGit
JGit is a (partial) implementation of Git● lightweight,● pure Java library,● modular (OSGi-ready)
EGit is the Eclipse team provider for Git● implemented on top of JGit● Gerrit support● Github support
Exercises 1 & 2
1 - Installation & Configuration● http://192.168.42.1/exo1.html● USB Stick: exo1.html● http://ilaborie.github.io/Git--EGit-beginner-
workshop/exo1.html
2 - Create Repositories● http://192.168.42.1/exo2.html● USB Stick: exo2.html● http://ilaborie.github.io/Git--EGit-beginner-
workshop/exo2.html
Notes
● Hierarchical configuration level: ○ system
○ user
○ project
● Authentication with Private/Public SSH keys
Working LocallyBasic operations
Commit
A commit just stores modifications (version) into the repository (local).
Be careful, make significant commits to provide a beautiful history.
The Staging Area / Index
● Intermediate zone between the working directory and the repository.
● Useful to prepare commit.● Can be skipped.
File status into Git
● A file can beuntracked - not managed by the repositorytracked - managed by the repository
● A tracked file can beunmodified if = last commitmodified if ≠ staging areastaged if ≠ last commit & = staging area*
*
?
Add
Working Directory
Staging Area Repository Never
Tracked Files
add**
?
Remove
Working Directory
Staging Area RepositoryUntracked Files
remove
Move
Working Directory
Staging Area Repository Never
Tracked Files
move
Ignore
Working Directory
Staging Area Repository Never
Tracked Files
?ignore
Commit
Working Directory
Staging Area Repository Never
Tracked Files
commit
*
Exercices 3 & 4
3 - Basic Operations● http://192.168.42.1/exo3.html● USB Stick: exo3.html● http://ilaborie.github.io/Git--EGit-beginner-
workshop/exo3.html
4 - Playing with Diffs (optional)● http://192.168.42.1/exo4.html● USB Stick: exo4.html● http://ilaborie.github.io/Git--EGit-beginner-
workshop/exo4.html
Notes
● It's easy to modify the last commit (amend)But Don't modify a shared commit !
● Reset allows you to unstage (and more)
BranchesThe DAG
Git Objects
sizeblobEclipse Public License
sizeblob<html><head> <title>Index
sizetreesizecommit
blob 5b1d3 README.md
blob 911e7 LICENSE
blob cba0a index.html
tree 92ec2
author Igor
committer Igor
parents ce23a1
First commit of my project
98ca9..92ec2..
sizeblobREADME===
5b1d3..
911e7..
cba0a..
sizecommit...
ce23a1..
The Directed Acyclic Graph
c0 c1 c2 c3
c4 c5 c6
c7 c8 c9 c10
c11 c12
Branches
c0 c1 c2 c3
c4 c5 c6
c7 c8 c9 c10
c11 c12
HEA
D
mas
ter
feat
ure_
A
feature_B
How many commits in feature A ?
mas
ter
Create a new branch: feature_A
c0 c1 c2 c3
master
Create a new branch: feature_A
c0 c1 c2 c3
master
feat
ure_
A
Create a new branch: feature_A
c0 c1 c2 c3
master
feat
ure_
A
Implementing the feature A
c0 c1 c2 c3
master
feat
ure_
A
Implementing the feature A
c0 c1 c2 c3
master
c4fe
atur
e_A
Implementing the feature A
c0 c1 c2 c3
master
c4 c5
feat
ure_
A
Checkout to master
c0 c1 c2 c3
master
c4 c5
feat
ure_
A
Checkout to master
c0 c1 c2 c3
master
c4 c5
feat
ure_
A
Working on master
c0 c1 c2 c3
master
c4 c5
feat
ure_
A
Working on master
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
master
Working on master
c7
master
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
Create a new branch: feature_B
c7
master
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
Create a new branch: feature_B
c7
master
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
feature_B
Implementing the feature B
c7
master
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
feature_B
Implementing the feature B
c8feature_B
c7
master
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
Implementing the feature B
c9
feature_B
c8c7
master
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
Step back to master
c9
feature_B
c8c7
master
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
Step back to master
c9
feature_B
c8c7
master
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
Let's merge master with feature_A
c9
feature_B
c8c7
master
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
Let's merge master with feature_A
c9
feature_B
c8
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
c10
mas
ter
c7
Go to feature_B
c9
feature_B
c8
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
c10
mas
ter
c7
Go to feature_B
c9
feature_B
c8
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
c10
mas
ter
c7
Let's rebase on master
c9
feature_B
c8
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
c10
mas
ter
c7
Let's rebase on master
c9
feature_B
c8
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
c10
mas
ter
c7
c8'
Let's rebase on master
c9
feature_B
c8
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
c10
mas
ter
c7
c8' c9'
Let's rebase on master
c9
feature_B
c8
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
c10
mas
ter
c7
c8' c9'
Let's rebase on master
feature_B
c0 c1 c2 c3
c4 c5fe
atur
e_A
c6
c10
mas
ter
c7
c8' c9'
c8 c9
Merge vs Rebase
feature_B
c0 c1 c2 c3
c4 c5
feat
ure_
A
c6
c10
mas
ter
c7
c8' c9'
c9
feature_B
c8
c0 c1 c2 c3
c4 c5
feat
ure_
A
c6
c10
mas
ter
c7 c11
Exercices 5 & 6
5 - Branches Workflow● http://192.168.42.1/exo5.html● USB Stick: exo5.html● http://ilaborie.github.io/Git--EGit-beginner-
workshop/exo5.html
6 - Handle Conflicts (Optional)● http://192.168.42.1/exo6.html● USB Stick: exo6.html● http://ilaborie.github.io/Git--EGit-beginner-
workshop/exo6.html
Notes
● Tag is a reference on a commit
● SHA-1 allow integrity check (fsck)
● Git rarely deletes data, reflog could save your life
RemotesSharing
Remotes
A remote repositories is defined by● an alias,● an URL
ssh://http://https://file://
git://
Initially
Remote
mas
ter
c0
Local
Clone
Remote Local
mas
ter
c0
ori
gin
/mas
ter
c0
master
A Local Commit
Remote Local
mas
ter
c0
ori
gin
/mas
ter
c0
master
c1
A Remote Commit
Remote Localm
aste
r
c0
ori
gin
/mas
ter
c0
master
c1c2
Fetch
mas
ter
Remote
c0
ori
gin
/mas
ter
Local
c0
master
c1
c2
c2
Pull
mas
ter
Remote
c0
Localm
aster
c2 c3
ori
gin
/mas
ter
c0
c1
c2
Push
mas
ter
Remote
c0
Localm
aster
c3
ori
gin
/mas
ter
c0
c1
c2
c3
c1
c2
Exercices 7 & 8
7 - Clone Repository ● http://192.168.42.1/exo7.html● USB Stick: exo7.html● http://ilaborie.github.io/Git--EGit-beginner-
workshop/exo7.html
8 - Remote Workflow● http://192.168.42.1/exo8.html● USB Stick: exo8.html● http://ilaborie.github.io/Git--EGit-beginner-
workshop/exo8.html
Notes
● Blame show commit details for each line of a file (Annotation)
● Branch tracking
● Upstream
ThanksQuestion(s)
Related Documents
