Git

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Introduction

The primary source code management system for the Mu2e Offline software is a git repository that is hosted on the Fermilab Redmine site. Git is a popular open-source software version control system and Redmine is a software project management system which contains, for each project, a wiki, gantt charts, and a bug tracking along with the git respositories.

Biased on the git repository's url, you can check out code, and, if you are a code developer, check in modifications. NB, when committing code, please follow these mu2e conventions only. Git also has capabilities for tagging code, tracking history and supports splitting off and merging development branches, among many other features.

Some older parts of Mu2e software is managed using other source code management systems. Some code, both critical and specialized, is in other, smaller repositories. See Repositories below for more details on repositories.

See the references for more details on Redmine and git.

Quick Start

Please also see the basic code recipe for an introduction to setting up the environment, checking out code and building.

If you are going to commit anything, you must understand and follow the mu2e commit instructions

If this is the first time you are using git in the mu2e environment, please follow the few steps listed here under "Configure git" in order to set up your ~.gitconfig.

A more detailed introduction to mu2e repositories is mu2e here.

  • checkout the main repository
    • readonly: 
      git clone http://cdcvs.fnal.gov/projects/mu2eofflinesoftwaremu2eoffline/Offline.git
    • with kerberos authentication for committing code 
      git clone ssh://p-mu2eofflinesoftwaremu2eoffline@cdcvs.fnal.gov/cvs/projects/mu2eofflinesoftwaremu2eoffline/Offline.git
  • checkout the head to a local working branch (recommended)
git checkout -b work
  • see the history of a file
git log fileSpec
  • list tags
git tag -l
  • checkout a tag or branch into the working area
git checkout tagOrBranchName
  • update the local repository
git fetch
  • update the local repository and checkout the head into the working area
git pull
  • see what the status is
git status
  • command line help
git status help
  • git browser (to see a graphical history of commits)
gitk --all


Please see the references below or many web resources for details on git concepts, commands and features. If you are going to commit anything, you must understand and follow the mu2e commit instructions

Repositories

Almost all of the mu2e Offline code is currently in one Redmine repository. One important piece, the BTrk UPS product, which contains our Kalman track fit code, is stored in the BTrk github repo.

A git repository is accessed through a url. For example this is the read/write url for the main offline code respository 

ssh://p-mu2eofflinesoftwaremu2eoffline@cdcvs.fnal.gov/cvs/projects/mu2eofflinesoftwaremu2eoffline/Offline.git

There exist several other mu2e Redmine repositories for various standalone tools not tightly coupled to compiled Offline code. You can browse all Redmine projects and mu2e Redmine. The mu2e Redmine has subprojects (and sub-subprojects) and each has a repository associated with them. For example in the Standalone subproject, there is a sub-subproject Mu2eCCFC with repo url: 

ssh://p-mu2eccfc@cdcvs.fnal.gov/cvs/projects/mu2eccfc-mu2eccfc/mu2eccfc.git

In addition, the main mu2e Offline repository has sub-repositories which can be seen on the right sidebar menu on the repository main page. An example is the dhtools sub-repo, which has url: 

ssh://p-mu2eofflinesoftwaremu2eoffline@cdcvs.fnal.gov/cvs/projects/mu2eofflinesoftwaremu2eoffline-dhtools/dhtools.git

A repo with a read/write url of the form: 

ssh://X@cdcvs.fnal.gov/cvs/projects/Y/Z

can be converted to the readonly version like: 

http://cdcvs.fnal.gov/projects/Y/Z

Here is a (possibly incomplete) list of the smaller repositories.

content user name alias
p-mu2e_artdaq mu2e_artdaq
p-mu2e_artdaq mu2e_artdaq-core
F-C limit setting p-mu2eccfc mu2eccfc-mu2eccfc mu2eccfc.git
p-mu2e-daq-firmware mu2e-daq-firmware
p-mu2e-daq-firmware mu2e-daq-firmware-dtc
p-mu2e-dcs mu2e-dcs
p-mu2e_detector_construction_db mu2e_detector_construction_db
grid tools p-mu2egrid mu2egrid
Offline p-mu2eofflinesoftwaremu2eoffline mu2eofflinesoftwaremu2eoffline Offline.git
Jenkins p-mu2eofflinesoftwaremu2eoffline mu2eofflinesoftwaremu2eoffline-codetools codetools.git
data handling p-mu2eofflinesoftwaremu2eoffline mu2eofflinesoftwaremu2eoffline-dhtools dhtools.git
p-mu2eofflinesoftwaremu2eoffline mu2eofflinesoftwaremu2eoffline-geomdisplay geomdisplay.git
satellite releases p-mu2eofflinesoftwaremu2eoffline mu2eofflinesoftwaremu2eoffline-satellite
p-mu2eofflinesoftwaremu2eoffline mu2eofflinesoftwaremu2eoffline-test
obsolete p-mu2eofflinesoftwaremu2eoffline mu2eofflinesoftwaremu2eoffline-validation validation.git
Stntuple framework p-mu2eofflinesoftwarestntuple mu2eofflinesoftwarestntuple Stntuple.git
p-mu2eofflinesoftwareuser mu2eofflinesoftwareuser-betasource betasource.git
p-mu2eofflinesoftwareuser mu2eofflinesoftwareuser-example01 example01.git
p-mu2eofflinesoftwareuser mu2eofflinesoftwareuser-streamline
p-mu2epbarmodels mu2epbarmodels
p-mu2e-raw-data mu2e-raw-data
p-mu2e-tools mu2e-tools-bintools mu2ebintools
FileTools p-mu2e-tools mu2e-tools-filetools mu2efiletools
FileTools p-mu2e-tools mu2e-tools-mu2efilename mu2efilename
generate_fcl p-mu2e-tools mu2e-tools-tools mu2etools

Creating a Redmine subproject is done by the "add subproject" button on the Redmine project web page. Creating a sub-repository associated to the main offline repo is explained in the mu2e instructions and SCD instructions.

References

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