96002 EPS Redis Client Implementation

config/redis.yml

@@ -120,6 +120,9 @@ development: &defaults
   va_mobile_session_refresh_lock:
     namespace: va-mobile-session-refresh-lock
     each_ttl: 60
+  eps_access_token:
+    namespace: eps-access-token
+    each_ttl: 900 # 15 minutes
   saml_request_tracker:
     namespace: saml_request_tracker
     each_ttl: 3600 # 1 hour

modules/vaos/app/services/eps/access_token_store.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+require 'common/models/redis_store'
+
+module Eps
+  class AccessTokenStore < Common::RedisStore
+    redis_store REDIS_CONFIG[:eps_access_token][:namespace]
+    redis_ttl REDIS_CONFIG[:eps_access_token][:each_ttl]
+    redis_key :token_type
+
+    attribute :token_type
+    attribute :access_token
+  end
+end

modules/vaos/spec/services/eps/access_token_store_spec.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Eps::AccessTokenStore do
+  subject { described_class }
+
+  let(:access_token) { 'test-access-token' }
+  let(:token_type) { 'jwt_bearer' }
+  let(:redis_key) { "eps-access-token:#{token_type}" }
+  let(:cache_data) { { token_type:, access_token: } }
+  let(:token_store_client) { subject.new(token_type:, access_token:) }
+
+  before do
+    token_store_client.save
+  end
+
+  describe '#save' do
+    it 'saves the value in cache' do
+      token = Oj.load($redis.get(redis_key))[:access_token]
+      expect(token).to eq(access_token)
+    end
+  end
+
+  describe '#ttl' do
+    it 'sets cache data expire to time from config file' do
+      expect($redis.ttl(redis_key)).to eq(900)
+    end
+  end
+
+  describe '#find' do
+    it 'gets data from cache' do
+      expect(Oj.load($redis.get(redis_key))).to eq(cache_data)
+    end
+  end
+end