jsondoc

jsondoc is a command line tool used to simplify creation of documentation of HTTP (REST) JSON APIs for projects written in Go. The input and/or output JSON structure for particular endpoints is obtained from named types from selected Go packages. The output of jsondoc is an HTML file with embedded CSS.

Installation

jsondoc can be installed with

go get github.com/lukpank/jsondoc/cmd/jsondoc

Usage

You run jsondoc by specifying input and output files like this

$ jsondoc -o output.html input.md

where input.md is both a markdown file and a Go text template. This means that you may write your documentation as a markdown document including some text template actions.

Example

For an example of such a markdown file and corresponding Go package see example directory. HTML output from jsondoc for this example is available here.

Description

You start the document with a title to be used in HTML header

{{title "Example JSON API description"}}

So if you want to display it on the page you have to use regular markdown header

# Example JSON API description

Then you can "import" packages from which you want to access types with

{{import "pkg" "package/path"}}

and then you can access types from this package with pkg.typeName (in particular you can access unexported types). If you want to access types from some package with just typeName you can import this package in the following way

{{import "." "package/path"}}

Each name may (such as pkg and in particular .) may be imported only once.

Now you can describe each endpoint in the form

## Request for path `/hello`

Used to obtain greetings for the given name.

{{input "helloInput"}}

{{output "helloOutput"}}

where after the header and short description of the given endpoint there are two template actions: input and output, the first one introduces the Go type representing JSON input of the endpoint and the second one introduces Go type representing JSON output of the endpoint. If they are of type struct the are presented as HTML tables, if they have fields with struct types they are presented as tables below the main table. If a field contains json struct tag its name is displayed as "Key name" in the table. If a field contains a comment it is displayed as "Description" in the table.

Author

Łukasz Pankowski (lukpank at o2 dot pl).