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require 'net/http'
require 'json'
require 'set'
require 'flipper'
require 'flipper/adapters/http/error'
require 'flipper/adapters/http/client'
module Flipper
module Adapters
class Http
include Flipper::Adapter
attr_reader :name
def initialize(options = {})
@client = Client.new(url: options.fetch(:url),
headers: options[:headers],
basic_auth_username: options[:basic_auth_username],
basic_auth_password: options[:basic_auth_password],
read_timeout: options[:read_timeout],
open_timeout: options[:open_timeout],
debug_output: options[:debug_output])
@name = :http
end
def get(feature)
response = @client.get("/features/#{feature.key}")
if response.is_a?(Net::HTTPOK)
parsed_response = JSON.parse(response.body)
result_for_feature(feature, parsed_response.fetch('gates'))
elsif response.is_a?(Net::HTTPNotFound)
default_config
else
raise Error, response
end
end
def add(feature)
body = JSON.generate(name: feature.key)
response = @client.post('/features', body)
response.is_a?(Net::HTTPOK)
end
def get_multi(features)
csv_keys = features.map(&:key).join(',')
response = @client.get("/features?keys=#{csv_keys}")
raise Error, response unless response.is_a?(Net::HTTPOK)
parsed_response = JSON.parse(response.body)
parsed_features = parsed_response.fetch('features')
gates_by_key = parsed_features.each_with_object({}) do |parsed_feature, hash|
hash[parsed_feature['key']] = parsed_feature['gates']
hash
end
result = {}
features.each do |feature|
result[feature.key] = result_for_feature(feature, gates_by_key[feature.key])
end
result
end
def get_all
response = @client.get("/features")
raise Error, response unless response.is_a?(Net::HTTPOK)
parsed_response = JSON.parse(response.body)
parsed_features = parsed_response.fetch('features')
gates_by_key = parsed_features.each_with_object({}) do |parsed_feature, hash|
hash[parsed_feature['key']] = parsed_feature['gates']
hash
end
result = {}
gates_by_key.keys.each do |key|
feature = Feature.new(key, self)
result[feature.key] = result_for_feature(feature, gates_by_key[feature.key])
end
result
end
def features
response = @client.get('/features')
raise Error, response unless response.is_a?(Net::HTTPOK)
parsed_response = JSON.parse(response.body)
parsed_response['features'].map { |feature| feature['key'] }.to_set
end
def remove(feature)
response = @client.delete("/features/#{feature.key}")
response.is_a?(Net::HTTPNoContent)
end
def enable(feature, gate, thing)
body = request_body_for_gate(gate, thing.value.to_s)
query_string = gate.key == :groups ? "?allow_unregistered_groups=true" : ""
response = @client.post("/features/#{feature.key}/#{gate.key}#{query_string}", body)
response.is_a?(Net::HTTPOK)
end
def disable(feature, gate, thing)
body = request_body_for_gate(gate, thing.value.to_s)
query_string = gate.key == :groups ? "?allow_unregistered_groups=true" : ""
response =
case gate.key
when :percentage_of_actors, :percentage_of_time
@client.post("/features/#{feature.key}/#{gate.key}#{query_string}", body)
else
@client.delete("/features/#{feature.key}/#{gate.key}#{query_string}", body)
end
response.is_a?(Net::HTTPOK)
end
def clear(feature)
response = @client.delete("/features/#{feature.key}/clear")
response.is_a?(Net::HTTPNoContent)
end
private
def request_body_for_gate(gate, value)
data = case gate.key
when :boolean
{}
when :groups
{ name: value }
when :actors
{ flipper_id: value }
when :percentage_of_actors, :percentage_of_time
{ percentage: value }
else
raise "#{gate.key} is not a valid flipper gate key"
end
JSON.generate(data)
end
def result_for_feature(feature, api_gates)
api_gates ||= []
result = default_config
feature.gates.each do |gate|
api_gate = api_gates.detect { |ag| ag['key'] == gate.key.to_s }
result[gate.key] = value_for_gate(gate, api_gate) if api_gate
end
result
end
def value_for_gate(gate, api_gate)
value = api_gate['value']
case gate.data_type
when :boolean, :integer
value ? value.to_s : value
when :set
value ? value.to_set : Set.new
else
unsupported_data_type(gate.data_type)
end
end
def unsupported_data_type(data_type)
raise "#{data_type} is not supported by this adapter"
end
end
end
end
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