mirror of
https://github.com/zrepl/zrepl.git
synced 2024-11-22 00:13:52 +01:00
docs + README: document new build & release process
This commit is contained in:
Christian Schwarz
parent
d2b825a8ae
commit
98207c904d
137
README.md
137
README.md
@ -30,20 +30,12 @@ zrepl is a one-stop ZFS backup & replication solution.
|
||||
The above does not apply if you already implemented everything.
|
||||
Check out the *Coding Workflow* section below for details.
|
||||
|
||||
## Package Maintainer Information
|
||||
## Building, Releasing, Downstream-Packaging
|
||||
|
||||
* Follow the steps in `docs/installation.rst -> Compiling from Source` and read the Makefile / shell scripts used in this process.
|
||||
* Make sure your distro is compatible with the paths in `docs/installation.rst`.
|
||||
* Ship a default config that adheres to your distro's `hier` and logging system.
|
||||
* Ship a service manager file and _please_ try to upstream it to this repository.
|
||||
* `dist/systemd` contains a Systemd unit template.
|
||||
* Ship other material provided in `./dist`, e.g. in `/usr/share/zrepl/`.
|
||||
* Use `make release ZREPL_VERSION='mydistro-1.2.3_1'`
|
||||
* Your distro's name and any versioning supplemental to zrepl's (e.g. package revision) should be in this string
|
||||
* Use `sudo make test-platform` **on a test system** to validate that zrepl's abstractions on top of ZFS work with the system ZFS.
|
||||
* Make sure you are informed about new zrepl versions, e.g. by subscribing to GitHub's release RSS feed.
|
||||
This section provides an overview of the zrepl build & release process.
|
||||
Check out `docs/installation/compile-from-source.rst` for build-from-source instructions.
|
||||
|
||||
## Developer Documentation
|
||||
### Overview
|
||||
|
||||
zrepl is written in [Go](https://golang.org) and uses [Go modules](https://github.com/golang/go/wiki/Modules) to manage dependencies.
|
||||
The documentation is written in [ReStructured Text](http://docutils.sourceforge.net/rst.html) using the [Sphinx](https://www.sphinx-doc.org) framework.
|
||||
@ -60,60 +52,61 @@ An HTML report can be generated using `make cover-html`.
|
||||
|
||||
**Code generation** is triggered by `make generate`. Generated code is committed to the source tree.
|
||||
|
||||
### Project Structure
|
||||
### Build & Release Process
|
||||
|
||||
```
|
||||
├── artifacts # build artifcats generate by make
|
||||
├── cli # wrapper around CLI package cobra
|
||||
├── client # all subcommands that are not `daemon`
|
||||
├── config # config data types (=> package yaml-config)
|
||||
│ └── samples
|
||||
├── daemon # the implementation of `zrepl daemon` subcommand
|
||||
│ ├── filters
|
||||
│ ├── hooks # snapshot hooks
|
||||
│ ├── job # job implementations
|
||||
│ ├── logging # logging outlets + formatters
|
||||
│ ├── nethelpers
|
||||
│ ├── prometheus
|
||||
│ ├── pruner # pruner implementation
|
||||
│ ├── snapper # snapshotter implementation
|
||||
├── dist # supplemental material for users & package maintainers
|
||||
├── docs # sphinx-based documentation
|
||||
│ ├── **/*.rst # documentation in reStructuredText
|
||||
│ ├── sphinxconf
|
||||
│ │ └── conf.py # sphinx config (see commit 445a280 why its not in docs/)
|
||||
│ ├── requirements.txt # pip3 requirements to build documentation
|
||||
│ ├── publish.sh # shell script for automated rendering & deploy to zrepl.github.io repo
|
||||
│ └── public_git # checkout of zrepl.github.io managed by above shell script
|
||||
├── endpoint # implementation of replication endpoints (=> package replication)
|
||||
├── logger # our own logger package
|
||||
├── platformtest # test suite for our zfs abstractions (error classification, etc)
|
||||
├── pruning # pruning rules (the logic, not the actual execution)
|
||||
│ └── retentiongrid
|
||||
├── replication
|
||||
│ ├── driver # the driver of the replication logic (status reporting, error handling)
|
||||
│ ├── logic # planning & executing replication steps via rpc
|
||||
| | └── pdu # the generated gRPC & protobuf code used in replication (and endpoints)
|
||||
│ └── report # the JSON-serializable report datastructures exposed to the client
|
||||
├── rpc # the hybrid gRPC + ./dataconn RPC client: connects to a remote replication.Endpoint
|
||||
│ ├── dataconn # Bulk data-transfer RPC protocol
|
||||
│ ├── grpcclientidentity # adaptor to inject package transport's 'client identity' concept into gRPC contexts
|
||||
│ ├── netadaptor # adaptor to convert a package transport's Connecter and Listener into net.* primitives
|
||||
│ ├── transportmux # TCP connecter and listener used to split control & data traffic
|
||||
│ └── versionhandshake # replication protocol version handshake perfomed on newly established connections
|
||||
├── tlsconf # abstraction for Go TLS server + client config
|
||||
├── transport # transport implementations
|
||||
│ ├── fromconfig
|
||||
│ ├── local
|
||||
│ ├── ssh
|
||||
│ ├── tcp
|
||||
│ └── tls
|
||||
├── util
|
||||
├── version # abstraction for versions (filled during build by Makefile)
|
||||
└── zfs # zfs(8) wrappers
|
||||
```
|
||||
**The `Makefile` is catering to the needs of developers & CI, not distro packagers**.
|
||||
It provides phony targets for
|
||||
* local development (building, running tests, etc)
|
||||
* building a release in Docker (used by the CI & release management)
|
||||
* building .deb and .rpm packages out of the release artifacts.
|
||||
|
||||
### Coding Workflow
|
||||
**Build tooling & dependencies** are documented as code in `lazy.sh`.
|
||||
Go dependencies are then fetched by the go command and pip dependencies are pinned through a `requirements.txt`.
|
||||
|
||||
**We use CircleCI for continuous integration**.
|
||||
There are two workflows:
|
||||
|
||||
* `ci` runs for every commit / branch / tag pushed to GitHub.
|
||||
It is supposed to run very fast (<5min and provides quick feedback to developers).
|
||||
It runs formatting checks, lints and tests on the most important OSes / architectures.
|
||||
Artifacts are published to minio.cschwarz.com (see GitHub Commit Status).
|
||||
|
||||
* `release` runs
|
||||
* on manual triggers through the CircleCI API (in order to produce a release)
|
||||
* periodically on `master`
|
||||
Artifacts are published to minio.cschwarz.com (see GitHub Commit Status).
|
||||
|
||||
**Releases** are issued via Git tags + GitHub Releases feature.
|
||||
The procedure to issue a release is as follows:
|
||||
* Issue the source release:
|
||||
* Git tag the release on the `master` branch.
|
||||
* Push the tag.
|
||||
* Run `./docs/publish.sh` to re-build & push zrepl.github.io.
|
||||
* Issue the official binary release:
|
||||
* Run the `release` pipeline (triggered via CircleCI API)
|
||||
* Download the artifacts to the release manager's machine.
|
||||
* Create a GitHub release, edit the changelog, upload all the release artifacts, including .rpm and .deb files.
|
||||
* Issue the GitHub release.
|
||||
* Add the .rpm and .deb files to the official zrepl repos, publish those.
|
||||
|
||||
**Official binary releases are not re-built when Go receives an update. If the Go update is critical to zrepl (e.g. a Go security update that affects zrepl), we'd issue a new source release**.
|
||||
The rationale for this is that whereas distros provide a mechanism for this (`$zrepl_source_release-$distro_package_revision`), GitHub Releases doesn't which means we'd need to update the existing GitHub release's assets, which nobody would notice (no RSS feed updates, etc.).
|
||||
Downstream packagers can read the changelog to determine whether they want to push that minor release into their distro or simply skip it.
|
||||
|
||||
### Additional Notes to Distro Package Maintainers
|
||||
|
||||
* Use `sudo make test-platform-bin && sudo make test-platform` **on a test system** to validate that zrepl's abstractions on top of ZFS work with the system ZFS.
|
||||
* Ship a default config that adheres to your distro's `hier` and logging system.
|
||||
* Ship a service manager file and _please_ try to upstream it to this repository.
|
||||
* `dist/systemd` contains a Systemd unit template.
|
||||
* Ship other material provided in `./dist`, e.g. in `/usr/share/zrepl/`.
|
||||
* Have a look at the `Makefile`'s `ZREPL_VERSION` variable and how it passed to Go's `ldFlags`.
|
||||
This is how `zrepl version` knows what version number to show.
|
||||
Your build system should set the `ldFlags` flags appropriately and add a prefix or suffix that indicates that the given zrepl binary is a distro build, not an official one.
|
||||
* Make sure you are informed about new zrepl versions, e.g. by subscribing to GitHub's release RSS feed.
|
||||
|
||||
|
||||
## Contributing Code
|
||||
|
||||
* Open an issue when starting to hack on a new feature
|
||||
* Commits should reference the issue they are related to
|
||||
@ -123,9 +116,6 @@ An HTML report can be generated using `make cover-html`.
|
||||
|
||||
Backward-incompatible changes must be documented in the git commit message and are listed in `docs/changelog.rst`.
|
||||
|
||||
* Config-breaking changes must contain a line `BREAK CONFIG` in the commit message
|
||||
* Other breaking changes must contain a line `BREAK` in the commit message
|
||||
|
||||
### Glossary & Naming Inconsistencies
|
||||
|
||||
In ZFS, *dataset* refers to the objects *filesystem*, *ZVOL* and *snapshot*. <br />
|
||||
@ -142,16 +132,3 @@ variables and types are often named *dataset* when they in fact refer to a *file
|
||||
There will not be a big refactoring (an attempt was made, but it's destroying too much history without much gain).
|
||||
|
||||
However, new contributions & patches should fix naming without further notice in the commit message.
|
||||
|
||||
### RPC debugging
|
||||
|
||||
Optionally, there are various RPC-related environment variables, that if set to something != `""` will produce additional debug output on stderr:
|
||||
|
||||
https://github.com/zrepl/zrepl/blob/master/rpc/rpc_debug.go#L11
|
||||
|
||||
https://github.com/zrepl/zrepl/blob/master/rpc/dataconn/dataconn_debug.go#L11
|
||||
|
||||
https://github.com/zrepl/zrepl/blob/master/rpc/dataconn/stream/stream_debug.go#L11
|
||||
|
||||
https://github.com/zrepl/zrepl/blob/master/rpc/dataconn/heartbeatconn/heartbeatconn_debug.go#L11
|
||||
|
||||
|
||||
@ -9,37 +9,35 @@ Producing a release requires **Go 1.11** or newer and **Python 3** + **pip3** +
|
||||
A tutorial to install Go is available over at `golang.org <https://golang.org/doc/install>`_.
|
||||
Python and pip3 should probably be installed via your distro's package manager.
|
||||
|
||||
::
|
||||
cd to/your/zrepl/checkout
|
||||
python3 -m venv3
|
||||
source venv3/bin/activate
|
||||
./lazy.sh devsetup
|
||||
make release
|
||||
# build artifacts are available in ./artifacts/release
|
||||
|
||||
The Python venv is used for the documentation build dependencies.
|
||||
If you just want to build the zrepl binary, leave it out and use `./lazy.sh godep` instead.
|
||||
|
||||
Alternatively, you can use the Docker build process:
|
||||
it is used to produce the official zrepl `binary releases`_
|
||||
and serves as a reference for build dependencies and procedure:
|
||||
|
||||
::
|
||||
|
||||
git clone https://github.com/zrepl/zrepl.git && \
|
||||
cd zrepl && \
|
||||
sudo docker build -t zrepl_build -f build.Dockerfile . && \
|
||||
sudo docker run -it --rm \
|
||||
-v "${PWD}:/src" \
|
||||
--user "$(id -u):$(id -g)" \
|
||||
zrepl_build make release
|
||||
cd to/your/zrepl/checkout
|
||||
# make sure your user has access to the docker socket
|
||||
make release-docker
|
||||
# if you want .deb or .rpm packages, invoke the follwoing
|
||||
# targets _after_ you invoked release-docker
|
||||
make deb-docker
|
||||
make rpm-docker
|
||||
# build artifacts are available in ./artifacts/release
|
||||
# packages are available in ./artifacts
|
||||
|
||||
Alternatively, you can install build dependencies on your local system and then build in your ``$GOPATH``:
|
||||
|
||||
::
|
||||
|
||||
mkdir -p "${GOPATH}/src/github.com/zrepl/zrepl"
|
||||
git clone https://github.com/zrepl/zrepl.git "${GOPATH}/src/github.com/zrepl/zrepl"
|
||||
cd "${GOPATH}/src/github.com/zrepl/zrepl"
|
||||
python3 -m venv3
|
||||
source venv3/bin/activate
|
||||
./lazy.sh devsetup
|
||||
make release
|
||||
|
||||
The Python venv is used for the documentation build dependencies.
|
||||
If you just want to build the zrepl binary, leave it out and use `./lazy.sh godep` instead.
|
||||
Either way, all build results are located in the ``artifacts/`` directory.
|
||||
|
||||
.. NOTE::
|
||||
|
||||
It is your job to install the appropriate binary in the zrepl users's ``$PATH``, e.g. ``/usr/local/bin/zrepl``.
|
||||
It is your job to install the built binary in the zrepl users's ``$PATH``, e.g. ``/usr/local/bin/zrepl``.
|
||||
Otherwise, the examples in the :ref:`quick-start guides <quickstart-toc>` may need to be adjusted.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user