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require 'securerandom'
require 'flipper/cloud'
require 'flipper/cloud/middleware'
require 'flipper/adapters/operation_logger'
RSpec.describe Flipper::Cloud::Middleware do
let(:flipper) {
Flipper::Cloud.new(token: "regular") do |config|
config.local_adapter = Flipper::Adapters::OperationLogger.new(Flipper::Adapters::Memory.new)
config.sync_secret = "regular_tasty"
end
}
let(:env_flipper) {
Flipper::Cloud.new(token: "env") do |config|
config.local_adapter = Flipper::Adapters::OperationLogger.new(Flipper::Adapters::Memory.new)
config.sync_secret = "env_tasty"
end
}
let(:app) { Flipper::Cloud.app(flipper) }
let(:response_body) { JSON.generate({features: {}}) }
let(:request_body) {
JSON.generate({
"environment_id" => 1,
"webhook_id" => 1,
"delivery_id" => SecureRandom.uuid,
"action" => "sync",
})
}
let(:timestamp) { Time.now }
let(:signature) {
Flipper::Cloud::MessageVerifier.new(secret: flipper.sync_secret).generate(request_body, timestamp)
}
let(:signature_header_value) {
Flipper::Cloud::MessageVerifier.new(secret: "").header(signature, timestamp)
}
context 'when initializing middleware with flipper instance' do
let(:app) { Flipper::Cloud.app(flipper) }
it 'uses instance to sync' do
Flipper.register(:admins) { |*args| false }
Flipper.register(:staff) { |*args| false }
Flipper.register(:basic) { |*args| false }
Flipper.register(:plus) { |*args| false }
Flipper.register(:premium) { |*args| false }
stub = stub_request_for_token('regular')
env = {
"HTTP_FLIPPER_CLOUD_SIGNATURE" => signature_header_value,
}
post '/', request_body, env
expect(last_response.status).to eq(200)
expect(JSON.parse(last_response.body)).to eq({
"groups" => [
{"name" => "admins"},
{"name" => "staff"},
{"name" => "basic"},
{"name" => "plus"},
{"name" => "premium"},
],
})
expect(stub).to have_been_requested
end
end
context 'when signature is invalid' do
let(:app) { Flipper::Cloud.app(flipper) }
let(:signature) {
Flipper::Cloud::MessageVerifier.new(secret: "nope").generate(request_body, timestamp)
}
it 'uses instance to sync' do
stub = stub_request_for_token('regular')
env = {
"HTTP_FLIPPER_CLOUD_SIGNATURE" => signature_header_value,
}
post '/', request_body, env
expect(last_response.status).to eq(400)
expect(stub).not_to have_been_requested
end
end
context "when flipper cloud responds with 402" do
let(:app) { Flipper::Cloud.app(flipper) }
it "results in 402" do
Flipper.register(:admins) { |*args| false }
Flipper.register(:staff) { |*args| false }
Flipper.register(:basic) { |*args| false }
Flipper.register(:plus) { |*args| false }
Flipper.register(:premium) { |*args| false }
stub = stub_request_for_token('regular', status: 402)
env = {
"HTTP_FLIPPER_CLOUD_SIGNATURE" => signature_header_value,
}
post '/', request_body, env
expect(last_response.status).to eq(402)
expect(last_response.headers["Flipper-Cloud-Response-Error-Class"]).to eq("Flipper::Adapters::Http::Error")
expect(last_response.headers["Flipper-Cloud-Response-Error-Message"]).to include("Failed with status: 402")
expect(stub).to have_been_requested
end
end
context "when flipper cloud responds with non-402 and non-2xx code" do
let(:app) { Flipper::Cloud.app(flipper) }
it "results in 500" do
Flipper.register(:admins) { |*args| false }
Flipper.register(:staff) { |*args| false }
Flipper.register(:basic) { |*args| false }
Flipper.register(:plus) { |*args| false }
Flipper.register(:premium) { |*args| false }
stub = stub_request_for_token('regular', status: 503)
env = {
"HTTP_FLIPPER_CLOUD_SIGNATURE" => signature_header_value,
}
post '/', request_body, env
expect(last_response.status).to eq(500)
expect(last_response.headers["Flipper-Cloud-Response-Error-Class"]).to eq("Flipper::Adapters::Http::Error")
expect(last_response.headers["Flipper-Cloud-Response-Error-Message"]).to include("Failed with status: 503")
expect(stub).to have_been_requested
end
end
context "when flipper cloud responds with timeout" do
let(:app) { Flipper::Cloud.app(flipper) }
it "results in 500" do
Flipper.register(:admins) { |*args| false }
Flipper.register(:staff) { |*args| false }
Flipper.register(:basic) { |*args| false }
Flipper.register(:plus) { |*args| false }
Flipper.register(:premium) { |*args| false }
stub = stub_request_for_token('regular', status: :timeout)
env = {
"HTTP_FLIPPER_CLOUD_SIGNATURE" => signature_header_value,
}
post '/', request_body, env
expect(last_response.status).to eq(500)
expect(last_response.headers["Flipper-Cloud-Response-Error-Class"]).to eq("Net::OpenTimeout")
expect(last_response.headers["Flipper-Cloud-Response-Error-Message"]).to eq("execution expired")
expect(stub).to have_been_requested
end
end
context 'when initialized with flipper instance and flipper instance in env' do
let(:app) { Flipper::Cloud.app(flipper) }
let(:signature) {
Flipper::Cloud::MessageVerifier.new(secret: env_flipper.sync_secret).generate(request_body, timestamp)
}
it 'uses env instance to sync' do
stub = stub_request_for_token('env')
env = {
"HTTP_FLIPPER_CLOUD_SIGNATURE" => signature_header_value,
'flipper' => env_flipper,
}
post '/', request_body, env
expect(last_response.status).to eq(200)
expect(stub).to have_been_requested
end
end
context 'when initialized without flipper instance but flipper instance in env' do
let(:app) { Flipper::Cloud.app }
let(:signature) {
Flipper::Cloud::MessageVerifier.new(secret: env_flipper.sync_secret).generate(request_body, timestamp)
}
it 'uses env instance to sync' do
stub = stub_request_for_token('env')
env = {
"HTTP_FLIPPER_CLOUD_SIGNATURE" => signature_header_value,
'flipper' => env_flipper,
}
post '/', request_body, env
expect(last_response.status).to eq(200)
expect(stub).to have_been_requested
end
end
context 'when initialized with env_key' do
let(:app) { Flipper::Cloud.app(flipper, env_key: 'flipper_cloud') }
let(:signature) {
Flipper::Cloud::MessageVerifier.new(secret: env_flipper.sync_secret).generate(request_body, timestamp)
}
it 'uses provided env key instead of default' do
stub = stub_request_for_token('env')
env = {
"HTTP_FLIPPER_CLOUD_SIGNATURE" => signature_header_value,
'flipper' => flipper,
'flipper_cloud' => env_flipper,
}
post '/', request_body, env
expect(last_response.status).to eq(200)
expect(stub).to have_been_requested
end
end
context 'when initializing lazily with a block' do
let(:app) { Flipper::Cloud.app(-> { flipper }) }
it 'works' do
stub = stub_request_for_token('regular')
env = {
"HTTP_FLIPPER_CLOUD_SIGNATURE" => signature_header_value,
}
post '/', request_body, env
expect(last_response.status).to eq(200)
expect(stub).to have_been_requested
end
end
context 'when using older /webhooks path' do
let(:app) { Flipper::Cloud.app(flipper) }
it 'uses instance to sync' do
Flipper.register(:admins) { |*args| false }
Flipper.register(:staff) { |*args| false }
Flipper.register(:basic) { |*args| false }
Flipper.register(:plus) { |*args| false }
Flipper.register(:premium) { |*args| false }
stub = stub_request_for_token('regular')
env = {
"HTTP_FLIPPER_CLOUD_SIGNATURE" => signature_header_value,
}
post '/webhooks', request_body, env
expect(last_response.status).to eq(200)
expect(JSON.parse(last_response.body)).to eq({
"groups" => [
{"name" => "admins"},
{"name" => "staff"},
{"name" => "basic"},
{"name" => "plus"},
{"name" => "premium"},
],
})
expect(stub).to have_been_requested
end
end
describe 'Request method unsupported' do
it 'skips middleware' do
get '/'
expect(last_response.status).to eq(404)
expect(last_response.content_type).to eq("application/json")
expect(last_response.body).to eq("{}")
end
end
describe 'Inspecting the built Rack app' do
it 'returns a String' do
expect(Flipper::Cloud.app(flipper).inspect).to eq("Flipper::Cloud")
end
end
private
def stub_request_for_token(token, status: 200)
stub = stub_request(:get, "https://www.flippercloud.io/adapter/features").
with({
headers: {
'Flipper-Cloud-Token' => token,
},
})
if status == :timeout
stub.to_timeout
else
stub.to_return(status: status, body: response_body, headers: {})
end
end
end
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