Simple two-way Git-TFS bridge
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README.md

git-tf - simple two-way bridge between TFS and Git

Features

  • Synchronizes Git commits with TFS changesets and vice versa.
  • One-to-one changeset-commit correspondence.
  • Works transparently. Other TFS users may not even know that you use Git.
  • TFS Workitem support: git tf wi.
  • Displays TFS-styled history with changeset numbers instead of commit hashes: git tf log.

New features are implemented in the dev branch.

Usage workflow

Here is the typical git-tf usage workflow:

  1. You work in the master branch offline as you normally do with a local git repository. You can stash, rebase, make local branches, bisect, etc. No need to checkout a file before editing.

  2. If a commit is associated with a TFS workitem, you use wi command to mark the commit:

    $ git tf wi 1234
    

    This marks the HEAD commit with the workitem 1234.

  3. When you are ready to sync with the server, you first fetch or pull changes.

    $ git tf pull
    

    This retrieves each TFS changeset individually and commits them into the tfs branch. Each commit is marked with a changeset number.

    If you used fetch, then git rebase your changes instead of merging. It is important, see below.

  4. Then you push your local changes to TFS

    $ git tf push
    

    This sends each of your pending commits to TFS individually. If a commit was associated with workitems, then the created changeset is associated with them automatically.

    To see the list of pending commits use $ git tf status while you are on master branch.

How it works

The tfs branch points to the git commit in the master branch that is last synchronized with TFS. In some sense tfs branch is analogous to origin.

Each git commit synchronized with TFS has a git note in the tf namespace. Each note has a TFS changeset number. To see the notes run

$ git log --notes=tf

Associated workitems IDs are stored in the tf.wi note namespace.

The commit pointed by tfs branch must always have a note. Without it git-tf won't be able to sync.

fetch, pull and push commands move the tfs branch.

Installation

Download the files and make sure that git-tf is in the PATH variable. I usually have only a symbolic link to git-tf in the PATH variable and I recommend doing it this way. Also make sure that git-tf files have the execution permission.

Normally you don't execute none of git-tf files directly. You access git-tf by calling

$ git tf <command>

Team Explorer Anywhere installation

Team Explorer Anywhere is a cross-platform client for TFS.

Once it is installed, you have to accept their EULA:

$ tf eula -accept

It is a paid product, but you can use it for 180 days:

$ tf productkey -trial

The product key is stored at ~/.microsoft/Team Explorer/10.0/

TFS Configuration

Skip this section if you have already mapped a TFS server folder to a local folder.

  1. Configure a profile.

    $ tf profile -new myProfile \
    -string:serverUrl=http://tfs01.xyz.example.com \
    -string:userName=john \
    -string:userDomain=company \
    -string:password=password \
    -boolean:acceptUntrustedCertificates=true
    

Make sure that acceptUntrustedCertificates is set to true if you have a secure connection (https).

  1. Create a workspace.

    $ tf workspace -new -profile:myProfile -collection:http://tfs01.xyz.example.com MyWorkspace
    
  2. Map a server folder to a local folder:

    $ tf workfold -map -workspace:MyWorkspace $/MyProject/Main ~/projects/myProject
    

Cloning a TFS repository

Once you have a local folder mapped to a server folder, you can use clone:

$ git tf clone -e yourName@tfsServer.com --all

This will import the entire change history from TFS to Git. Be patient. TFS works way slower than Git.

###Changesets to fetch

There are four ways to specify what changesets to fetch:

  1. By default only the latest changeset is fetched
  2. --all option: fetch the entire TFS history
  3. --number option: fetch a specified number of changesets
  4. --version option: fetch changesets since the specified version

###Line endings

Since the majority of TFS users are on Windows, the core.autocrlf is set to true by default. To change that set tf.clone.autocrlf config value to false globally before cloning:

$ git config --global tf.clone.autocrlf false

DO NOT MERGE

Never use git merge tfs on master if you have used fetch instead of pull. You should always rebase:

# on branch master
$ git rebase tfs

rebase is like merge, but instead of applying their changes on your changes, it applies your changes on their changes.

If you use merge, you will screw your TFS history up when you push and your team won't be happy.

Mailing list

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