Don't use module attribute for configuration values since they are se…

…t on compilation time.

Changelog.md

@@ -6,12 +6,16 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [0.2.0-alpha.5] - 2018-06-21
+### Fixed
+- Don't use module attribute for configuration values since they are set on compilation time. This prevented the enforce_struct_schema feature to work properly.
+
 ## [0.2.0-alpha.4] - 2018-06-21
 ### Added
 - New function `set_struct/2`. This function allow you to convert an struct type into a mutation (json based) type in dgraph. It also allows you to enforce the schema in database (adding a "class name" info before every predicate, this class name is the single name given to the elixir module struct) by activating the `enforce_struct_schema` in the config files. The function sends the mutation to the server and returns `{:ok, result}` or `{:error, error}` otherwise. Internally it uses Dgraphs `set_json`. Thanks to @WolfDan.
 - New config option `keepalive`. It defines the time in ms between pings to the server. Default value is `:infinity` which disables pings completely. Dgraph drops the connection on pings at the moment so it is disabled for now. Internally this uses `:adapter_opts` of grpc-elixir which in turn sets `http2_opts` of gun.
 - I added a changelog.
 
-## Fixed
+### Fixed
 - The `keepalive` option fixes the `gun_down` error for now. The connection was dropped by Dgraph when the server was pinged. The server sent a `{goaway,0,enhance_your_calm,<<"too_many_pings">>}` message. For now pings are disabled. This is not ideal since this way ExDgraph cannot check if the connection is still alive. But I have to wait for Dgraph to get back to me on this issue. You find the issue here: https://github.com/dgraph-io/dgraph/issues/2444
 - Removed some warnings and refactored a couple of things.

lib/exdgraph/mutation.ex

@@ -4,8 +4,6 @@ defmodule ExDgraph.Mutation do
   """
   alias ExDgraph.{Exception, MutationStatement, Transform}
 
-  @enforce_struct_schema Application.get_env(:ex_dgraph, ExDgraph)[:enforce_struct_schema]
-
   @doc false
   def mutation!(conn, statement) do
     case mutation_commit(conn, statement) do
@@ -152,7 +150,7 @@ defmodule ExDgraph.Mutation do
       existing_uuid -> existing_uuid
     end)
     |> Enum.reduce(%{}, fn {key, map_value}, a ->
-      set_schema(schema, {key, map_value}, a, @enforce_struct_schema)
+      set_schema(schema, {key, map_value}, a, ExDgraph.config(:enforce_struct_schema))
     end)
   end
 

mix.exs

@@ -4,7 +4,7 @@ defmodule ExDgraph.MixProject do
   def project do
     [
       app: :ex_dgraph,
-      version: "0.2.0-alpha.4",
+      version: "0.2.0-alpha.5",
       elixir: "~> 1.6",
       start_permanent: Mix.env() == :prod,
       deps: deps(),