249 lines
8.3 KiB
Markdown
249 lines
8.3 KiB
Markdown
> **Notice:** *This repository hosts experimental components that are
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> currently under heavy and fast-paced development, not-ready for public
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> consumption. If you are looking for the stable registry, please head over to
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> [docker/docker-registry](https://github.com/docker/docker-registry)
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> instead.*
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Distribution
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============
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The Docker toolset to pack, ship, store, and deliver content.
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The main product of this repository is the new registry implementation for
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storing and distributing docker images. It supersedes the [docker/docker-
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registry](https://github.com/docker/docker-registry) project with a new API
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design, focused around security and performance.
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The _Distribution_ project has the further long term goal of providing a
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secure tool chain for distributing content. The specifications, APIs and tools
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should be as useful with docker as they are without.
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This repository contains the following components:
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- **registry (beta):** An implementation of the [Docker Registry HTTP API
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V2](doc/spec/api.md) for use with docker 1.5+.
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- **libraries (unstable):** A rich set of libraries for interacting with
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distribution components. Please see
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[godoc](http://godoc.org/github.com/docker/distribution) for details. Note
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that the libraries *are not* considered stable.
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- **dist (experimental):** An experimental tool to provide distribution
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oriented functionality without the docker daemon.
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- **specifications**: _Distribution_ related specifications are available in
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[doc/spec](doc/spec).
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- **documentation:** Documentation is available in [doc](doc/overview.md).
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### How will this integrate with Docker engine?
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This project should provide an implementation to a V2 API for use in the
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Docker core project. The API should be embeddable and simplify the process of
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securely pulling and pushing content from docker daemons.
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### What are the long term goals of the Distribution project?
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Design a professional grade and extensible content distribution system, that
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allow users to:
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* Enjoy an efficient, secured and reliable way to store, manage, package and
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exchange content
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* Hack/roll their own on top of healthy open-source components
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* Implement their own home made solution through good specs, and solid
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extensions mechanism.
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Features
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--------
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The new registry implementation provides the following benefits:
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- faster push and pull
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- new, more efficient implementation
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- simplified deployment
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- pluggable storage backend
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- webhook notifications
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Installation
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------------
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**TODO(stevvooe):** Add the following here:
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- docker file
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- binary builds for non-docker environment (test installations, etc.)
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Configuration
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-------------
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The registry server can be configured with a yaml file. The following is a
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simple example that can used for local development:
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```yaml
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version: 0.1
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loglevel: debug
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storage:
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filesystem:
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rootdirectory: /tmp/registry-dev
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http:
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addr: localhost:5000
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secret: asecretforlocaldevelopment
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debug:
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addr: localhost:5001
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```
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The above configures the registry instance to run on port 5000, binding to
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"localhost", with the debug server enabled. Registry data will be stored in
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"/tmp/registry-dev". Logging will be in "debug" mode, which is the most
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verbose.
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A similar simple configuration is available at [cmd/registry/config.yml],
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which is generally useful for local development.
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**TODO(stevvooe): Need a "best practice" configuration overview. Perhaps, we
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can point to a documentation section.
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For full details about configuring a registry server, please see [the
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documentation](doc/configuration.md).
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### Upgrading
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**TODO:** Add a section about upgrading from V1 registry along with link to
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migrating in documentation.
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Build
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-----
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If a go development environment is setup, one can use `go get` to install the
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`registry` command from the current latest:
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```sh
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go get github.com/docker/distribution/cmd/registry
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```
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The above will install the source repository into the `GOPATH`. The `registry`
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binary can then be run with the following:
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```
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$ $GOPATH/bin/registry -version
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$GOPATH/bin/registry github.com/docker/distribution v2.0.0-alpha.1+unknown
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```
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The registry can be run with the default config using the following
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incantantation:
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```
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$ $GOPATH/bin/registry $GOPATH/src/github.com/docker/distribution/cmd/registry/config.yml
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INFO[0000] endpoint local-8082 disabled, skipping app.id=34bbec38-a91a-494a-9a3f-b72f9010081f version=v2.0.0-alpha.1+unknown
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INFO[0000] endpoint local-8083 disabled, skipping app.id=34bbec38-a91a-494a-9a3f-b72f9010081f version=v2.0.0-alpha.1+unknown
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INFO[0000] listening on :5000 app.id=34bbec38-a91a-494a-9a3f-b72f9010081f version=v2.0.0-alpha.1+unknown
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INFO[0000] debug server listening localhost:5001
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```
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If it is working, one should see the above log messages.
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### Repeatable Builds
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For the full development experience, one should `cd` into
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`$GOPATH/src/github.com/docker/distribution`. From there, the regular `go`
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commands, such as `go test`, should work per package (please see
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[Developing](#developing) if they don't work).
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A `Makefile` has been provided as a convenience to support repeatable builds.
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Please install the following into `GOPATH` for it to work:
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```
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go get github.com/tools/godep github.com/golang/lint/golint
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```
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**TODO(stevvooe):** Add a `make setup` command to Makefile to run this. Have
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to think about how to interact with Godeps properly.
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Once these commands are available in the `GOPATH`, run `make` to get a full
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build:
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```
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$ GOPATH=`godep path`:$GOPATH make
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+ clean
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+ fmt
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+ vet
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+ lint
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+ build
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github.com/docker/docker/vendor/src/code.google.com/p/go/src/pkg/archive/tar
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github.com/Sirupsen/logrus
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github.com/docker/libtrust
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...
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github.com/yvasiyarov/gorelic
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github.com/docker/distribution/registry/handlers
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github.com/docker/distribution/cmd/registry
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+ test
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...
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ok github.com/docker/distribution/digest 7.875s
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ok github.com/docker/distribution/manifest 0.028s
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ok github.com/docker/distribution/notifications 17.322s
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? github.com/docker/distribution/registry [no test files]
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ok github.com/docker/distribution/registry/api/v2 0.101s
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? github.com/docker/distribution/registry/auth [no test files]
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ok github.com/docker/distribution/registry/auth/silly 0.011s
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...
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+ /Users/sday/go/src/github.com/docker/distribution/bin/registry
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+ /Users/sday/go/src/github.com/docker/distribution/bin/registry-api-descriptor-template
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+ /Users/sday/go/src/github.com/docker/distribution/bin/dist
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+ binaries
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```
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The above provides a repeatable build using the contents of the vendored
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Godeps directory. This includes formatting, vetting, linting, building,
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testing and generating tagged binaries. We can verify this worked by running
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the registry binary generated in the "./bin" directory:
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```sh
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$ ./bin/registry -version
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./bin/registry github.com/docker/distribution v2.0.0-alpha.2-80-g16d8b2c.m
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```
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### Developing
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The above approaches are helpful for small experimentation. If more complex
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tasks are at hand, it is recommended to employ the full power of `godep`.
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The Makefile is designed to have its `GOPATH` defined externally. This allows
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one to experiment with various development environment setups. This is
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primarily useful when testing upstream bugfixes, by modifying local code. This
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can be demonstrated using `godep` to migrate the `GOPATH` to use the specified
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dependencies. The `GOPATH` can be migrated to the current package versions
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declared in `Godeps` with the following command:
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```sh
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godep restore
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```
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> **WARNING:** This command will checkout versions of the code specified in
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> Godeps/Godeps.json, modifying the contents of `GOPATH`. If this is
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> undesired, it is recommended to create a workspace devoted to work on the
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> _Distribution_ project.
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With a successful run of the above command, one can now use `make` without
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specifying the `GOPATH`:
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```sh
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$ make
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```
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If that is successful, standard `go` commands, such as `go test` should work,
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per package, without issue.
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Support
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-------
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If any issues are encountered while using the _Distribution_ project, several
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avenues are available for support:
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IRC: #docker-distribution on FreeNode
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Issue Tracker: github.com/docker/distribution/issues
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Google Groups: https://groups.google.com/a/dockerproject.org/forum/#!forum/distribution
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Mailing List: docker@dockerproject.org
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Contribute
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----------
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Please see [CONTRIBUTING.md](CONTRIBUTING.md).
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License
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-------
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This project is distributed under [Apache License, Version 2.0](LICENSE.md).
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