clean up ES config

CHANGELOG.md

@@ -17,6 +17,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Cleaned up ElasticSearch configuration in backend.
+
 ## [2.6.1 - 2019-08-10]
 
 ### Fixed

backend/config/config.exs

@@ -28,16 +28,7 @@ instances_config_path =
 config :backend, Backend.Elasticsearch.Cluster,
   url: "http://localhost:9200",
   api: Elasticsearch.API.HTTP,
-  json_library: Jason,
-  indexes: %{
-    instances: %{
-      settings: instances_config_path,
-      store: Backend.Elasticsearch.Store,
-      sources: [Backend.Instance],
-      bulk_page_size: 1000,
-      bulk_wait_interval: 1_000
-    }
-  }
+  json_library: Jason
 
 # Configures Elixir's Logger
 config :logger, :console,

backend/lib/backend/elasticsearch/cluster.ex

@@ -1,3 +1,21 @@
 defmodule Backend.Elasticsearch.Cluster do
   use Elasticsearch.Cluster, otp_app: :backend
+
+  def init(config) do
+    indexes = %{
+      instances: %{
+        settings: Application.app_dir(:backend, "priv/elasticsearch/instances.json"),
+        store: Backend.Elasticsearch.Store,
+        sources: [Backend.Instance],
+        bulk_page_size: 1000,
+        bulk_wait_interval: 1000
+      }
+    }
+
+    config =
+      config
+      |> Map.put(:indexes, indexes)
+
+    {:ok, config}
+  end
 end