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Forest Godfrey
gitlab-ce
Commits
5cac1456
Commit
5cac1456
authored
Aug 29, 2017
by
Achilleas Pipinellis
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Add perforce migration doc
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@@ -7,6 +7,7 @@
1.
[
From Gitea
](
gitea.md
)
1.
[
From SVN
](
svn.md
)
1.
[
From ClearCase
](
clearcase.md
)
1.
[
From Perforce
](
perforce.md
)
In addition to the specific migration documentation above, you can import any
Git repository via HTTP from the New Project page. Be aware that if the
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doc/user/project/import/perforce.md
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# Migrating from Perforce Helix
[
Perforce Helix
](
https://www.perforce.com/
)
provides a set of tools which also
include a centralized, proprietary version control system similar to Git.
The following list illustrates the main differences between Perforce Helix and
Git:
1.
In general the biggest difference is that Perforce branching is heavyweight
compared to Git's lightweight branching. When you create a branch in Perforce,
it creates an integration record in their proprietary database for every file
in the branch, regardless how many were actually changed. Whereas Git was
implemented with a different architecture so that a single SHA acts as a pointer
to the state of the whole repo after the changes, making it very easy to branch.
This is what made feature branching workflows so easy to adopt with Git.
1.
Also, context switching between branches is much easier in Git. If your manager
said 'You need to stop work on that new feature and fix this security
vulnerability' you can do so very easily in Git.
1.
Having a complete copy of the project and its history on your local machine
means every transaction is superfast and Git provides that. You can branch/merge
and experiment in isolation, then clean up your mess before sharing your new
cool stuff with everyone.
1.
Git also made code review simple because you could share your changes without
merging them to master, whereas Perforce had to implement a Shelving feature on
the server so others could review changes before merging.
## Why migrate
Perforce Helix can be difficult to manage both from a user and an admin
perspective. Migrating to Git/GitLab there is:
-
**No licensing costs**
, Git is GPL while Perforce Helix is proprietary.
-
**Shorter learning curve**
, Git has a big community and a vast number of
tutorials to get you started.
-
**Integration with modern tools**
, migrating to Git and GitLab you can have
an open source end-to-end software development platform with built-in version
control, issue tracking, code review, CI/CD, and more.
## How to migrate
Git includes a built-in mechanism (
`git p4`
) to pull code from Perforce and to
submit back from Git to Perforce.
Here's a few links to get you started:
-
[
git-p4 manual page
](
https://www.kernel.org/pub/software/scm/git/docs/git-p4.html
)
-
[
git-p4 example usage
](
https://git.wiki.kernel.org/index.php/Git-p4_Usage
)
-
[
Git book migration guide
](
https://git-scm.com/book/en/v2/Git-and-Other-Systems-Migrating-to-Git#_perforce_import
)
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