We use GitHub for tracking Vanadium issues: https://github.com/vanadium/issues/issues
Before patches can be accepted, contributors must sign the Google Individual Contributor License Agreement (CLA), which can be done online. The CLA is necessary since contributors own the copyright to their code, even after it becomes part of the codebase, so permission is required to use and distribute that code. Contributors don't have to sign the CLA until after a patch has been submitted for review and a member has approved it, but the CLA must be signed before the patch is committed into the codebase.
Before starting work on a large contribution, we recommend that you get in touch through the issue tracker with your idea so that other contributors and authors can help out and possibly guide you.
Contributions made by corporations are covered by a different agreement than the one above, the Software Grant and Corporate Contributor License Agreement.
As a new developer you need to gain access to vanadium.googlesource.com and request a password for accessing it as follows:
Go to https://vanadium.googlesource.com, log in with your identity, click on “Generate Password”, and follow the instructions to store the credentials for accessing vanadium.googlesource.com locally.
Go to https://vanadium-review.googlesource.com and log in with your identity. This will create an account for you in the code review system.
Make sure your machine has the credentials as described above.
If you are developing on Darwin (OS X), you need to have the Xcode command line tools installed. You can quickly install these in the terminal with:
# Mac only prerequisite install xcode-select --install
The instructions on this page assume that the following software is installed and in your PATH:
To contribute to Vanadium, you will want to setup up a directory which contains the entire collection of repositories (projects) which make up the Vanadium universe of language libraries, command line tools, services, website, example projects, and development tools like v23.
Set the V23_ROOT environment variable. Use an absolute path that points to a local file system location (remote file system such as NFS are discouraged for performance reasons and to avoid ENOKEY ‘git’ errors). Use a directory that does NOT exist; the following steps will create it.
# Edit to taste export V23_ROOT=${HOME}/vanadium
Be sure to add the $V23_ROOT environment variable to your profile.
Run the initial setup script (this might take several minutes):
curl https://v.io/bootstrap | bash
Add $V23_ROOT/devtools/bin to your PATH.
export PATH=$PATH:$V23_ROOT/devtools/bin
Be sure to add the modified $PATH to your profile.
Extra development profiles such as ARM cross-compilation, support for mobile, or web development can be installer using the v23 command. To see a list of available profiles run:
v23 profile list
Profiles can be installed with v23 profile install <profile> where <profile> is replaced with one of the items from the list.
Invocations of the v23 profile install command are idempotent.
In order to successfully install/build the Vanadium Go code you will need to install syncbase dependencies with:
v23 profile install syncbase
The syncbase profile is required.
OS X only: If you are on Darwin (OS X) be sure to have a full Xcode install via the App Store (not just the command line tools).
In order to install the nodejs profile run:
v23 profile install nodejs
To compile vanadium go codebase, use the following commands:
# For the host OS and architecture v23 go <command> <packages> # For cross-compilation using default toolchain GOARCH=<arch> GOOS=<os> v23 go <command> <packages> # For cross-compilation using development profiles V23_PROFILE=<profile> v23 go <command> <packages>
These commands setup the GOPATH and other environment variables so the Vanadium libraries and binaries are built for the desired architecture.
Check that the Go code builds
v23 go build v.io/...
Run all Go tests
v23 go test v.io/...
Install all the Go binaries
v23 go install v.io/...
Ensure that you have the required profile set up by running:
v23 profile install nacl nodejs
This will install dependencies needed to build and run the Vanadium JavaScript projects and the Vanadium Chrome extension. Darwin (OS X) users should be sure to have a full install of Xcode.
To build and test Vanadium JavaScript library, please ensure Vanadium Go binaries are installed first (they are required for integration testing).
Build the Go Vanadium binaries.
v23 go install v.io/...
All other dependencies can be satisfied via the default make target.
cd $V23_ROOT/release/javascript/core make
Build and test the JavaScript API.
make test
Remove all JavaScript build artifacts
make clean
All of the individual Vanadium projects use git for version control. The “master” branch of each local repository is reserved for tracking the remote https://vanadium.googlesource.com counterpart. All Vanadium development should take place on a non-master (feature) branch. Once your code has been reviewed and approved, it will be merged into the remote master via our code review system and brought to your local instance via v23 update.
The only way to contribute to master is via the Gerrit code review process.
To submit a change for review you will need to squash your feature branch into a single commit and send the patch to Gerrit for review. The command v23 cl simplifies this process and is described in greater detail below.
Sync the master branch to the latest version of the project:
v23 update
Create a new branch for your change
# replacing `<branch>` with your branch name v23 cl new <branch>
Make modifications to the project source code.
Stage any changed files for a commit:
git add <file1> <file2> ... <fileN>
Commit your modifications:
git commit
Repeat steps 3-5 as necessary.
Update all of the local master branches using the v23 command:
v23 update
If you are not already on it, switch to the feature branch that corresponds to the change you are trying to bring up to date with the upstream:
git checkout <branch> git merge master
If there are no conflicts, you are done.
If there are conflicts:
git add <pathspec>...git commitSwitch to the branch that corresponds to the change in question.
git checkout <branch>
Submit your change to Gerrit with the v23 cl command.
# <reviewers> is a comma-seperated list of emails or LDAPs # Alternatively reviewers can be added via the Gerrit UI v23 cl mail -r=<reviewers>
If you are unsure who to add as a reviewer you can leave off the -r flag. Our team periodically scans for CLs and a reviewer will come along. If you would rather not wait, feel free to let us know about your change by filing an issue on GitHub.
Switch to the branch that corresponds to the change in question
git checkout <branch>
Modify and commit code as as described above.
Be sure to address each review comment on Gerrit.
Once you have addressed all review comments be sure to reply at the top of the Gerrit UI for the specific patch.
Once you have addressed all review comments, you can update the change with a new patch using:
v23 cl mail
Work with your reviewers to receive “+2” score. If your change no longer applies cleanly due to upstream changes, the reviewer may ask you to rebase it. You will need to follow the steps in the section above: “Syncing a change to the latest version of the project” and then run v23 cl mail again
The reviewer will submit your change and it will be merged into the master branch.
Optional: Delete the feature branch once it has been submitted:
git checkout master v23 cl cleanup <branch>
There are several useful shorcuts you can use for quick access to changes and issues.