391 lines
7.4 KiB
Markdown
391 lines
7.4 KiB
Markdown
---
|
||
comments: false
|
||
---
|
||
|
||
# GitLab Git Workshop
|
||
|
||
---
|
||
|
||
## Agenda
|
||
|
||
1. Brief history of Git.
|
||
1. GitLab walkthrough.
|
||
1. Configure your environment.
|
||
1. Workshop.
|
||
|
||
---
|
||
|
||
## Git introduction
|
||
|
||
<https://git-scm.com/about>
|
||
|
||
- Distributed version control.
|
||
- Does not rely on connection to a central server.
|
||
- Many copies of the complete history.
|
||
- Powerful branching and merging.
|
||
- Adapts to nearly any workflow.
|
||
- Fast, reliable and stable file format.
|
||
|
||
---
|
||
|
||
## Help!
|
||
|
||
Use the tools at your disposal when you get stuck.
|
||
|
||
- Use '`git help <command>`' command.
|
||
- Use Google.
|
||
- Read documentation at <https://git-scm.com>.
|
||
|
||
---
|
||
|
||
## GitLab Walkthrough
|
||
|
||
|
||
|
||
---
|
||
|
||
## Configure your environment
|
||
|
||
- Windows: Install 'Git for Windows'
|
||
|
||
> <https://git-for-windows.github.io>
|
||
|
||
- Mac: Type '`git`' in the Terminal application.
|
||
|
||
> If it's not installed, it will prompt you to install it.
|
||
|
||
- Debian: '`sudo apt-get install git-all`' or Red Hat '`sudo yum install git-all`'
|
||
|
||
---
|
||
|
||
## Git Workshop
|
||
|
||
### Overview
|
||
|
||
1. Configure Git.
|
||
1. Configure SSH Key.
|
||
1. Create a project.
|
||
1. Committing.
|
||
1. Feature branching.
|
||
1. Merge requests.
|
||
1. Feedback and Collaboration.
|
||
|
||
---
|
||
|
||
## Configure Git
|
||
|
||
One-time configuration of the Git client:
|
||
|
||
```sh
|
||
git config --global user.name "Your Name"
|
||
git config --global user.email you@example.com
|
||
```
|
||
|
||
---
|
||
|
||
## Configure SSH Key
|
||
|
||
```sh
|
||
ssh-keygen -t rsa -b 4096 -C "you@computer-name"
|
||
```
|
||
|
||
```sh
|
||
# You will be prompted for the following information. Press enter to accept the defaults. Defaults appear in parentheses.
|
||
Generating public/private rsa key pair.
|
||
Enter file in which to save the key (/Users/you/.ssh/id_rsa):
|
||
Enter passphrase (empty for no passphrase):
|
||
Enter same passphrase again:
|
||
Your identification has been saved in /Users/you/.ssh/id_rsa.
|
||
Your public key has been saved in /Users/you/.ssh/id_rsa.pub.
|
||
The key fingerprint is:
|
||
39:fc:ce:94:f4:09:13:95:64:9a:65:c1:de:05:4d:01 you@computer-name
|
||
```
|
||
|
||
Copy your public key and add it to your GitLab profile:
|
||
|
||
```sh
|
||
cat ~/.ssh/id_rsa.pub
|
||
```
|
||
|
||
```sh
|
||
ssh-rsa AAAAB3NzaC1yc2EAAAADAQEL17Ufacg8cDhlQMS5NhV8z3GHZdhCrZbl4gz you@example.com
|
||
```
|
||
|
||
---
|
||
|
||
## Create a project
|
||
|
||
- Create a project in your user namespace.
|
||
- Choose to import from 'Any Repo by URL' and use <https://gitlab.com/gitlab-org/training-examples.git>.
|
||
- Create a '`development`' or '`workspace`' directory in your home directory.
|
||
- Clone the '`training-examples`' project.
|
||
|
||
---
|
||
|
||
## Commands (project)
|
||
|
||
```sh
|
||
mkdir ~/development
|
||
cd ~/development
|
||
|
||
-or-
|
||
|
||
mkdir ~/workspace
|
||
cd ~/workspace
|
||
|
||
git clone git@gitlab.example.com:<username>/training-examples.git
|
||
cd training-examples
|
||
```
|
||
|
||
---
|
||
|
||
## Git concepts
|
||
|
||
### Untracked files
|
||
|
||
New files that Git has not been told to track previously.
|
||
|
||
### Working area
|
||
|
||
Files that have been modified but are not committed.
|
||
|
||
### Staging area
|
||
|
||
Modified files that have been marked to go in the next commit.
|
||
|
||
---
|
||
|
||
## Committing
|
||
|
||
1. Edit '`edit_this_file.rb`' in '`training-examples`'.
|
||
1. See it listed as a changed file (working area).
|
||
1. View the differences.
|
||
1. Stage the file.
|
||
1. Commit.
|
||
1. Push the commit to the remote.
|
||
1. View the git log.
|
||
|
||
---
|
||
|
||
## Commands (committing)
|
||
|
||
```sh
|
||
# Edit `edit_this_file.rb`
|
||
git status
|
||
git diff
|
||
git add <file>
|
||
git commit -m 'My change'
|
||
git push origin master
|
||
git log
|
||
```
|
||
|
||
---
|
||
|
||
## Feature branching
|
||
|
||
- Efficient parallel workflow for teams.
|
||
- Develop each feature in a branch.
|
||
- Keeps changes isolated.
|
||
- Consider a 1-to-1 link to issues.
|
||
- Push branches to the server frequently.
|
||
- Hint: This is a cheap backup for your work-in-progress code.
|
||
|
||
---
|
||
|
||
## Feature branching steps
|
||
|
||
1. Create a new feature branch called 'squash_some_bugs'.
|
||
1. Edit '`bugs.rb`' and remove all the bugs.
|
||
1. Commit.
|
||
1. Push.
|
||
|
||
---
|
||
|
||
## Commands (feature branching)
|
||
|
||
```sh
|
||
git checkout -b squash_some_bugs
|
||
# Edit `bugs.rb`
|
||
git status
|
||
git add bugs.rb
|
||
git commit -m 'Fix some buggy code'
|
||
git push origin squash_some_bugs
|
||
```
|
||
|
||
---
|
||
|
||
## Merge requests
|
||
|
||
- When you want feedback create a merge request.
|
||
- Target is the ‘default’ branch (usually master).
|
||
- Assign or mention the person you would like to review.
|
||
- Add 'WIP' to the title if it's a work in progress.
|
||
- When accepting, always delete the branch.
|
||
- Anyone can comment, not just the assignee.
|
||
- Push corrections to the same branch.
|
||
|
||
---
|
||
|
||
## Merge requests steps
|
||
|
||
Create your first merge request:
|
||
|
||
1. Use the blue button in the activity feed.
|
||
1. View the diff (changes) and leave a comment.
|
||
1. Push a new commit to the same branch.
|
||
1. Review the changes again and notice the update.
|
||
|
||
---
|
||
|
||
## Feedback and Collaboration
|
||
|
||
- Merge requests are a time for feedback and collaboration.
|
||
- Giving feedback is hard.
|
||
- Be as kind as possible.
|
||
- Receiving feedback is hard.
|
||
- Be as receptive as possible.
|
||
- Feedback is about the best code, not the person. You are not your code.
|
||
|
||
---
|
||
|
||
## Feedback and Collaboration resources
|
||
|
||
Review the Thoughtbot code-review guide for suggestions to follow when reviewing merge requests:
|
||
<https://github.com/thoughtbot/guides/tree/master/code-review>.
|
||
|
||
See GitLab merge requests for examples: <https://gitlab.com/gitlab-org/gitlab-ce/merge_requests>.
|
||
|
||
---
|
||
|
||
## Explore GitLab projects
|
||
|
||
|
||
|
||
- Dashboard
|
||
- User Preferences
|
||
- ReadMe, Changelog, License shortcuts
|
||
- Issues
|
||
- Milestones and Labels
|
||
- Manage project members
|
||
- Project settings
|
||
|
||
---
|
||
|
||
## Tags
|
||
|
||
- Useful for marking deployments and releases.
|
||
- Annotated tags are an unchangeable part of Git history.
|
||
- Soft/lightweight tags can be set and removed at will.
|
||
- Many projects combine an annotated release tag with a stable branch.
|
||
- Consider setting deployment/release tags automatically.
|
||
|
||
---
|
||
|
||
## Tags steps
|
||
|
||
1. Create a lightweight tag.
|
||
1. Create an annotated tag.
|
||
1. Push the tags to the remote repository.
|
||
|
||
Additional resources: <http://git-scm.com/book/en/Git-Basics-Tagging>.
|
||
|
||
---
|
||
|
||
## Commands (tags)
|
||
|
||
```sh
|
||
git checkout master
|
||
|
||
# Lightweight tag
|
||
git tag my_lightweight_tag
|
||
|
||
# Annotated tag
|
||
git tag -a v1.0 -m ‘Version 1.0’
|
||
git tag
|
||
|
||
git push origin --tags
|
||
```
|
||
|
||
---
|
||
|
||
## Merge conflicts
|
||
|
||
- Happen often.
|
||
- Learning to fix conflicts is hard.
|
||
- Practice makes perfect.
|
||
- Force push after fixing conflicts. Be careful!
|
||
|
||
---
|
||
|
||
## Merge conflicts steps
|
||
|
||
1. Checkout a new branch and edit `conflicts.rb`. Add 'Line4' and 'Line5'.
|
||
1. Commit and push.
|
||
1. Checkout master and edit `conflicts.rb`. Add 'Line6' and 'Line7' below 'Line3'.
|
||
1. Commit and push to master.
|
||
1. Create a merge request.
|
||
|
||
---
|
||
|
||
## Merge conflicts commands
|
||
|
||
After creating a merge request you should notice that conflicts exist. Resolve
|
||
the conflicts locally by rebasing.
|
||
|
||
```sh
|
||
git rebase master
|
||
|
||
# Fix conflicts by editing the files.
|
||
|
||
git add conflicts.rb
|
||
git commit -m 'Fix conflicts'
|
||
git rebase --continue
|
||
git push origin <branch> -f
|
||
```
|
||
|
||
---
|
||
|
||
## Rebase with squash
|
||
|
||
You may end up with a commit log that looks like this:
|
||
|
||
```
|
||
Fix issue #13
|
||
Test
|
||
Fix
|
||
Fix again
|
||
Test
|
||
Test again
|
||
Does this work?
|
||
```
|
||
|
||
Squash these in to meaningful commits using an interactive rebase.
|
||
|
||
---
|
||
|
||
## Rebase with squash commands
|
||
|
||
Squash the commits on the same branch we used for the merge conflicts step.
|
||
|
||
```sh
|
||
git rebase -i master
|
||
```
|
||
|
||
In the editor, leave the first commit as 'pick' and set others to 'fixup'.
|
||
|
||
---
|
||
|
||
## Questions?
|
||
|
||
|
||
|
||
Thank you for your hard work!
|
||
|
||
## Additional Resources
|
||
|
||
- GitLab Documentation: <http://docs.gitlab.com/>.
|
||
- GUI Clients: <http://git-scm.com/downloads/guis>.
|
||
- Pro git book: <http://git-scm.com/book>.
|
||
- Platzi Course: <https://courses.platzi.com/courses/git-gitlab/>.
|
||
- Code School tutorial: <http://try.github.io/>.
|
||
- Contact us at `subscribers@gitlab.com`.
|