ruby-sinatra-server.OpenAPIing.rb Maven / Gradle / Ivy
require 'json'
require 'sinatra/base'
require 'sinatra/cross_origin'
class Configuration
attr_accessor :base_path, :api_version, :openapi_version, :format_specifier
def initialize
@api_version = '1.0'
@base_path = 'http://localhost:4567'
@openapi_version = '1.1'
@format_specifier = ".json"
end
end
class OpenAPIing < Sinatra::Base
register Sinatra::CrossOrigin
@@routes = {}
@@configuration = Configuration.new
attr_accessor :configuration
def self.configure
get("/resources" + @@configuration.format_specifier) {
cross_origin
OpenAPIing.to_resource_listing
}
# for openapi.yaml
get("/openapi.yaml") {
cross_origin
File.read("./openapi.yaml");
}
@@configuration ||= Configuration.new
yield(@@configuration) if block_given?
end
def self.add_route(method, path, swag={}, opts={}, &block)
#fullPath = swag["resourcePath"].to_s + @@configuration.format_specifier + path
fullPath = path.gsub(/{(.*?)}/, ':\1')
accepted = case method.to_s.downcase
when 'get'
get(fullPath, opts, &block)
true
when 'post'
post(fullPath, opts, &block)
true
when 'delete'
delete(fullPath, opts, &block)
true
when 'put'
put(fullPath, opts, &block)
true
else
puts "Error adding route: #{method} #{fullPath}"
false
end
if accepted then
resourcePath = swag["resourcePath"].to_s
ops = @@routes[resourcePath]
if ops.nil?
ops = Array.new
@@routes.merge!(resourcePath => ops)
get(resourcePath + @@configuration.format_specifier) do
cross_origin
OpenAPIing.to_api(resourcePath)
end
end
swag.merge!("httpMethod" => method.to_s.upcase)
ops.push(swag)
end
end
def self.to_resource_listing
apis = Array.new
(@@routes.keys).each do |key|
api = {
"path" => (key + ".{format}"),
"description" => "no description"
}
apis.push api
end
resource = {
"apiVersion" => @@configuration.api_version,
"openapiVersion" => @@configuration.openapi_version,
"apis" => apis
}
resource.to_json
end
def self.to_api(resourcePath)
apis = {}
models = []
@@routes[resourcePath].each do |route|
endpoint = route["endpoint"].gsub(/:(\w+)(\/?)/,'{\1}\2')
path = (resourcePath + ".{format}" + endpoint)
api = apis[path]
if api.nil?
api = {"path" => path, "description" => "description", "operations" => []}
apis.merge!(path => api)
end
parameters = route["parameters"]
unless parameters.nil? then
parameters.each do |param|
av_string = param["allowableValues"]
unless av_string.nil?
if av_string.count('[') > 0
pattern = /^([A-Z]*)\[(.*)\]/
match = pattern.match av_string
case match.to_a[1]
when "LIST"
allowables = match.to_a[2].split(',')
param["allowableValues"] = {
"valueType" => "LIST",
"values" => allowables
}
when "RANGE"
allowables = match.to_a[2].split(',')
param["allowableValues"] = {
"valueType" => "RANGE",
"min" => allowables[0],
"max" => allowables[1]
}
end
end
end
end
end
op = {
"httpMethod" => route["httpMethod"],
"description" => route["summary"],
"responseClass" => route["responseClass"],
"notes" => route["notes"],
"nickname" => route["nickname"],
"summary" => route["summary"],
"parameters" => route["parameters"]
}
api["operations"].push(op)
end
api_listing = {
"apiVersion" => @@configuration.api_version,
"openapiVersion" => @@configuration.openapi_version,
"basePath" => @@configuration.base_path,
"resourcePath" => resourcePath,
"apis" => apis.values,
"models" => models
}
api_listing.to_json
end
end
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