mirror of https://github.com/docker/cli.git
104 lines
4.1 KiB
Markdown
104 lines
4.1 KiB
Markdown
[](https://travis-ci.org/googleapis/gnostic)
|
|
|
|
# ⨁ gnostic
|
|
|
|
This repository contains a Go command line tool which converts
|
|
JSON and YAML [OpenAPI](https://github.com/OAI/OpenAPI-Specification)
|
|
descriptions to and from equivalent Protocol Buffer representations.
|
|
|
|
[Protocol Buffers](https://developers.google.com/protocol-buffers/)
|
|
provide a language-neutral, platform-neutral, extensible mechanism
|
|
for serializing structured data.
|
|
**gnostic**'s Protocol Buffer models for the OpenAPI Specification
|
|
can be used to generate code that includes data structures with
|
|
explicit fields for the elements of an OpenAPI description.
|
|
This makes it possible for developers to work with OpenAPI
|
|
descriptions in type-safe ways, which is particularly useful
|
|
in strongly-typed languages like Go and Swift.
|
|
|
|
**gnostic** reads OpenAPI descriptions into
|
|
these generated data structures, reports errors,
|
|
resolves internal dependencies, and writes the results
|
|
in a binary form that can be used in any language that is
|
|
supported by the Protocol Buffer tools.
|
|
A plugin interface simplifies integration with API
|
|
tools written in a variety of different languages,
|
|
and when necessary, Protocol Buffer OpenAPI descriptions
|
|
can be reexported as JSON or YAML.
|
|
|
|
**gnostic** compilation code and OpenAPI Protocol Buffer
|
|
models are automatically generated from an
|
|
[OpenAPI JSON Schema](https://github.com/OAI/OpenAPI-Specification/blob/master/schemas/v2.0/schema.json).
|
|
Source code for the generator is in the [generate-gnostic](generate-gnostic) directory.
|
|
|
|
## Disclaimer
|
|
|
|
This is prerelease software and work in progress. Feedback and
|
|
contributions are welcome, but we currently make no guarantees of
|
|
function or stability.
|
|
|
|
## Requirements
|
|
|
|
**gnostic** can be run in any environment that supports [Go](http://golang.org)
|
|
and the [Google Protocol Buffer Compiler](https://github.com/google/protobuf).
|
|
|
|
## Installation
|
|
|
|
1. Get this package by downloading it with `go get`.
|
|
|
|
go get github.com/googleapis/gnostic
|
|
|
|
2. [Optional] Build and run the compiler generator.
|
|
This uses the OpenAPI JSON schema to generate a Protocol Buffer language file
|
|
that describes the OpenAPI specification and a Go-language file of code that
|
|
will read a JSON or YAML OpenAPI representation into the generated protocol
|
|
buffers. Pre-generated versions of these files are in the OpenAPIv2 directory.
|
|
|
|
cd $GOPATH/src/github.com/googleapis/gnostic/generate-gnostic
|
|
go install
|
|
cd ..
|
|
generate-gnostic --v2
|
|
|
|
3. [Optional] Generate Protocol Buffer support code.
|
|
A pre-generated version of this file is checked into the OpenAPIv2 directory.
|
|
This step requires a local installation of protoc, the Protocol Buffer Compiler.
|
|
You can get protoc [here](https://github.com/google/protobuf).
|
|
|
|
./COMPILE-PROTOS.sh
|
|
|
|
4. [Optional] Rebuild **gnostic**. This is only necessary if you've performed steps
|
|
2 or 3 above.
|
|
|
|
go install github.com/googleapis/gnostic
|
|
|
|
5. Run **gnostic**. This will create a file in the current directory named "petstore.pb" that contains a binary
|
|
Protocol Buffer description of a sample API.
|
|
|
|
gnostic --pb-out=. examples/petstore.json
|
|
|
|
6. You can also compile files that you specify with a URL. Here's another way to compile the previous
|
|
example. This time we're creating "petstore.text", which contains a textual representation of the
|
|
Protocol Buffer description. This is mainly for use in testing and debugging.
|
|
|
|
gnostic --text-out=petstore.text https://raw.githubusercontent.com/googleapis/gnostic/master/examples/petstore.json
|
|
|
|
7. For a sample application, see apps/report.
|
|
|
|
go install github.com/googleapis/gnostic/apps/report
|
|
report petstore.pb
|
|
|
|
8. **gnostic** supports plugins. This builds and runs a sample plugin
|
|
that reports some basic information about an API. The "-" causes the plugin to
|
|
write its output to stdout.
|
|
|
|
go install github.com/googleapis/gnostic/plugins/gnostic-go-sample
|
|
gnostic examples/petstore.json --go-sample-out=-
|
|
|
|
## Copyright
|
|
|
|
Copyright 2017, Google Inc.
|
|
|
|
## License
|
|
|
|
Released under the Apache 2.0 license.
|