Awesome

joyent-repos

This repository defines a "jr-manifest.json" spec for how the set of repos for a Triton product can be defined, including metadata (labels). It also provides a tool (jr) for working with these repo manifests -- for example to enable easily cloning one, a few, or all repos and running commands in those clones. (This effort was done as part of RFD 70.)

Motivation

Joyent has a number of products, e.g. Manta, Triton Data Center ("Triton" for short), and SmartOS. Each of those products is comprised of a (often large) number of git repositories. The release process needs to know which repos represent top-level build components, which repos should be branched; a new employee likely wants to clone most/all repos for a given product; etc. Having some mechanism for structured and maintained repo metadata can help these and many automation use cases.

Overview

There is a "jr-manifest.json" file (following the spec defined below) in the "master" repo of each product:

Joyent Product	JR manifest
Triton	triton.git tools/jr-manifest.json
Manta	manta.git tools/jr-manifest.json
SmartOS	smartos-live.git tools/jr-manifest.json
Triton (private repos)	triton-dev.git ./jr-manifest.json

Then automation can use those as required. The provided jr tool can work with the jr-manifest.json files in local clones of these repos.

Registered users

Having a registered set of tools/processes using jr and this spec can help immensely in maintaining it. Please add to this list if that's you.

Registered users:

the jr tool in this repo
as of TRITON-539, sdcnode documents how to determine sdcnode usage using jr ... commands
as of TOOLS-2143, the sdcrelease process uses jr when running scripts in the triton.git ./tools/releng directory.

JR Manifest Spec

A repo manifest is a JSON file that enumerates a set of repos, some metadata on those repos (currently just labels), fields that define the scope of repos for this manifest, and a set of repos that do not belong (to aid in maintaining the file). The file is typically called "jr-manifest.json". Typically the "set" represents the repos relevant for a Joyent product. Currently the manifest enumerates repo names, assuming they are all on GitHub and under the github.com/TritonDataCenter organization.

See the example jr-manifest.json file.

A repo manifest file has the following fields:

jrVersion: Currently 1. This may be used in the future for versioning the spec.
description: A short description for the set of repos.

repositories: This is the array of included repositories. E.g.:

"repositories": [
    {
        "name": "mahi"
    },
    {
        "name": "rfd",
        "labels": {
            "meta": true
        }
    }
]

excludedRepositories: This is an array of candidate repos names (see repoCandidateSearch) that are explicitly not considered part of this set. These are listed so that repeated runs of jr update-manifest need not revisit all repos everytime.
repoCandidateSearch: An object providing data used by jr update-manifest ... to help maintain the manifest. It includes the following fields:
- description: A sentence describing what qualifies a repo to belong in this manifest. This sentence is included shown to the user of jr update-manifest.
- type: The "type" value to the GitHub v3 API to "List organization repositories", e.g. "public".
- includeArchived (boolean): Set this to true to have jr update-manifest consider repos that have been archived on GitHub. Defaults to false.

blessedLabels: An array of objects describing "blessed" labels. These are show in the jr update-manifest UI to assist the maintainer in selecting useful labels. E.g.:

"blessedLabels": [
    {
        "name": "meta",
        "type": "boolean",
        "description": "a repo that isn't code, but ..."
    },
    {
        "name": "tritonservice",
        "type": "string",
        "description": "the top-level repo for a ..."
    }
],

See also Blessed labels below for some suggested label usage across all repo manifests.

defaults: An object with default metadata for every included repo. The only metadata, and hence only supported defaults are labels, e.g.:
```
"defaults": {
    "labels": {
        "triton": true,
        "public": true
    }
},
```

Blessed labels

public: true|false is used to indicate if the repo is public/private. in active use.
meta: true is typical for repos that aren't code for the product but related, e.g. rfd.git and eng.git.
triton: true is for repos related to the Triton product
manta: true is for repos repos to the Manta product
release: true should be set on a repo from which a Joyent eng release component is built. This decides what the Joyent engineering release process includes.
mg: <Jenkins job name> Originally called 'mg' because it referred to mountain-gorilla targets, this maps the top-level repo to a Jenkins Job name. WARNING: The "sdc-headnode" repo is relevant for multiple Jenkins jobs. We've chosen to use the "headnode-joyent" target here.
buildisprivate: true should be set on repos with a release build component (currently that is those with an mg label) if their built component is private (i.e. is uploaded to the /Joyent_Dev/stor/builds area). Note that this may differ from whether the repo itself is public (according to the public label).
image: <image name> is used to not the name of the core image created by this repo, e.g. "image": "manta-authcache" for the mahi repo.
tritonservice: <service name> is used to note which repo is the primary repo for a Triton service, e.g. "tritonservice": "imgapi" for the sdc-imgapi repo.
mantaservice: <service name> is used to note which repo is the primary repo for a Manta service, e.g. "mantaservice": "webapi" for the manta-muskie repo.

`jr`

A tool to work with these jr-manifest.json files and the repos mentioned in them.

Setup

Install it:

git clone git@github.com:TritonDataCenter/joyent-repos.git
cd joyent-repos
make
export PATH=`pwd`/bin:$PATH

Update to the latest triton.git and triton-dev.git.
Config it:
```
$ export JR_MANIFESTS=`pwd`/triton/tools/jr-manifest.json,
`pwd`/manta/tools/jr-manifest.json,`pwd`/smartos-live/tools/jr-manifest.json,
`pwd`/triton-dev/jr-manifest.json
```
where those paths are adjusted to where you have local clones of triton.git, manta.git, smartos-live.git, and triton-dev.git.

If you want repositories to be checked out to directories with a given suffix (e.g. <repo_name>.git) then set:
```
export JR_REPO_PATH_SUFFIX='.git'
```
Check it by listing repos:
```
jr --version
jr list
```

How to use `jr` to update the sdc-scripts git submodule in all Triton repos

Say you have a ticket (TRITON-NNN) to update all the Triton repos that build service images to the latest sdc-scripts. Here is one way to use jr to help do that.

Make a working dir and clone all the repos there:

mkdir triton-NNN
cd triton-NNN
jr clone -y -l triton,vm

Update the submodule in each clone:

jr oneach 'git submodule update --init -- deps/sdc-scripts'
jr oneach 'cd deps/sdc-scripts && git checkout master'

Unfortunately triton-cmon and triton-cns do it differently: using an npm dep for sdc-scripts, rather than git submodule.

(cd sdc-papi/deps/sdc-scripts/ && git log -1 --pretty=format:%H)
vi triton-cns/package.json
vi triton-cmon/package.json

Inspect the diff in each repo to ensure it is copacetic:
```
jr oneach 'git diff'
```

Start a Gerrit CR for each (assuming you use grr):

jr oneach 'grr TRITON-NNN'      # gathers info, creates feature branch
jr oneach 'git commit -am "update to latest sdc-scripts"'
jr oneach -c1 'grr'             # creates a CR
open 'https://cr.joyent.us/#/q/is:open+TRITON-NNN'

The -c1 is for a concurrency of just one when pushing things to cr.joyent.us, otherwise I've found it fails a lot.

Get reviews on all those, then update the commit message:
```
jr oneach 'grr'
```
and submit them (TODO: finish grr -S for submitting).
Then clean up:
```
cd ..
rm -rf triton-NNN
```

Here is an example run for TRITON-380: https://gist.github.com/trentm/2abe2335f9997c511b683e67bd622d42.

Maintenance of repo manifest files

The "joyent" org has a lot of repositories. Trying to keep track of which newly added repositories are relevant for a given repo manifest is tedious. The jr update-manifest MANIFEST-PATH command is intended to help with this. To support this command a manifest must have a repoCandidateSearch object (see the spec above).

Periodically one should run jr update-manifest MANIFEST-PATH and walk through the interactive steps to add (and/or explicitly exclude) new candidate repos. The command will fetch all repos from GitHub's API matching the repoCandidateSearch params and then have you edit the list to those that should be included in the manifest (along with optionally adding labels) and those that should be excluded.

Here is an example run:

$ jr update-manifest ~/joy/triton/tools/jr-manifest.json
Gathering candidate repos from GitHub.

* * *
The following 2 repo(s) have been archived, or are otherwise no longer
candidate repos for "/Users/trentm/joy/triton/tools/jr-manifest.json":
    node-tracker
    sdc-zookeeper
Remove them from the manifest? [Y/n]
Updated "/Users/trentm/joy/triton/tools/jr-manifest.json".

* * *
There are 3 candidate new repo(s) to work through:
    zoneinit
    keyapi
    cloud-init

The manifest defines relevant repos as follows:
    public github.com/TritonDataCenter repos directly relevant to development of TritonDC

The process is:
1. edit the list of repos to include in this manifest
   (possibly including additional labels)
2. edit the list of repos to exclude as not relevant
3. any left over repos are deferred until the next
   `jr update-manifest ...`

Hit <Enter> to open your editor, <Ctrl+C> to abort.
Updated "/Users/trentm/joy/triton/tools/jr-manifest.json".

* * *
Next we will handle *exclusions*, by editing the remaining
list of repos down to those to be excluded from this manifest.
Hit <Enter> to open your editor, <Ctrl+C> to abort.

No new repos to exclude.

When a manifest knows about all candidate repos, then a run will look like this:

$ jr update-manifest ~/joy/triton/tools/jr-manifest.json
Gathering candidate repos from GitHub.
No newly archived repos to remove from the manifest.
No new repos to add to the manifest.