Move environment variable configs to separate file

backend-services/feed-service/app/utils/ConfigHelper.scala

@@ -4,8 +4,10 @@ import com.typesafe.config.{Config, ConfigFactory}
 
 object ConfigHelper {
   private val applicationConfig: Config = ConfigFactory.load("application.conf")
+  private val referenceConfig: Config = ConfigFactory.parseResources("reference.conf")
+  private val config: Config = referenceConfig.withFallback(applicationConfig).resolve()
 
-  def getString(key: String): String = applicationConfig.getString(key)
-  def getInt(key: String): Int = applicationConfig.getInt(key)
-  def getBoolean(key: String): Boolean = applicationConfig.getBoolean(key)
+  def getString(key: String): String = config.getString(key)
+  def getInt(key: String): Int = config.getInt(key)
+  def getBoolean(key: String): Boolean = config.getBoolean(key)
 }

backend-services/feed-service/conf/application.conf

@@ -37,10 +37,3 @@ play.http.errorHandler = "models.CustomErrorHandler"
 
 # Control which modules are loaded when Play starts.
 play.modules.enabled += Module
-
-# --- Configuration Values to be replaced with environment variables, if present ---
-mongodb.uri = ${?MONGO_URI}
-enable.question.db.seeding = ${?ENABLE_QUESTION_DB_SEEDING}
-jwt.privateKey = ${?JWT_PRIVATE_KEY}
-friend.service.uri = ${?FRIEND_SERVICE_URI}
-user.service.uri = ${?USER_SERVICE_URI}

backend-services/feed-service/conf/reference.conf

+# --- Configuration Values to be replaced with environment variables, if present ---
+
+# MongoDB Connection Strings
+mongodb.uri = ${?MONGO_URI}
+
+# Whether to seed the Question DB
+enable.question.db.seeding = ${?ENABLE_QUESTION_DB_SEEDING}
+
+# JWT Authentication
+jwt.privateKey = ${?JWT_PRIVATE_KEY}
+
+# External Service URIs
+friend.service.uri = ${?FRIEND_SERVICE_URI}
+user.service.uri = ${?USER_SERVICE_URI}
+
+# Application Secret Key - https://www.playframework.com/documentation/2.8.x/ApplicationSecret
+play.http.secret.key=${?PLAY_HTTP_SECRET_KEY}