[elixir] Convert proto-based messages to json schema based messages

.github/workflows/test-codegen.yml

@@ -39,6 +39,17 @@ jobs:
       - run: composer install
         working-directory: php
 
+
+      - name: Set up Elixir
+        uses: erlef/setup-beam@v1
+        with:
+          otp-version: '25.1'
+          elixir-version: '1.14.x'
+
+      - name: Install Protoc
+        uses: arduino/setup-protoc@v1
+
+
       - name: generate code for all languages
         run: |
           make clean-all

.github/workflows/test-elixir.yml

@@ -18,8 +18,8 @@ jobs:
       - uses: actions/checkout@v3
       - uses: erlef/setup-beam@v1
         with:
-          otp-version: '22.2'
-          elixir-version: '1.10.x'
+          otp-version: '25.1'
+          elixir-version: '1.14.x'
 
       - name: Install Protoc
         uses: arduino/setup-protoc@v1
@@ -29,9 +29,5 @@ jobs:
           mix deps.get
         working-directory: elixir
 
-      - name: compile messages
-        run: MIX_ENV=prod mix protox.generate --multiple-files --output-path=lib/cucumber_messages/generated messages.proto
-        working-directory: elixir
-
       - run: mix test
         working-directory: elixir

Makefile

@@ -23,7 +23,7 @@ schemas = \
 	./jsonschema/UndefinedParameterType.json \
 	./jsonschema/Envelope.json
 
-languages = go java javascript perl php ruby
+languages = go java javascript perl php ruby elixir
 
 .DEFAULT_GOAL = help
 

elixir/.formatter.exs

@@ -0,0 +1,3 @@
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]

elixir/Makefile

@@ -1,25 +1,21 @@
-include default.mk
+schemas = $(shell find ../jsonschema -name "*.json")
 
-clean:
-	rm -rf _build deps .deps .tested
-	rm -rf lib/cucumber_messages/generated/*
+.DEFAULT_GOAL = help
 
-.deps: setup_mix_and_get_dependencies update_proto_file compile_messages revert_proto_file
-	touch .deps
+help: ## Show this help
+	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make <target>\n\nWhere <target> is one of:\n"} /^[$$()% a-zA-Z_-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
 
-setup_mix_and_get_dependencies:
-	mix local.hex --force
-	mix deps.get
-.PHONY: setup_mix_and_get_dependencies
+generate: require lib/cucumber_messages/generated/messages.ex ## Generate elixir code based on the schemas found in ../jsonschema and using `mix generate_json_structs` for the generation
 
-update_proto_file: messages.proto
-	mv $< $<.bak
-	cat $<.bak | sed "s/package io.cucumber.messages/package cucumber_messages/" > $<
+require: ## Check requirements for the code generation (elixir/mix is required)
+	@mix --version >/dev/null 2>&1 || (echo "ERROR: elixir/mix is required."; exit 1)
 
-compile_messages:
-	MIX_ENV=prod mix protox.generate --multiple-files --output-path=lib/cucumber_messages/generated messages.proto
-.PHONY: compile_messages
+clean: ## Remove automatically generated files and related artifacts
+	rm -rf lib/cucumber_messages/generated/messages.ex
 
-revert_proto_file: messages.proto.bak
-	mv messages.proto.bak messages.proto
-.PHONY: revert_proto_file
+lib/cucumber_messages/generated/messages.ex: $(schemas) ../jsonschema/scripts/templates/elixir.erb
+	ruby ../jsonschema/scripts/codegen.rb Ruby ../jsonschema elixir.erb > $@
+	mix local.hex --force
+	mix deps.get
+	mix compile
+	mix format

elixir/lib/cucumber_message.ex

@@ -10,7 +10,6 @@ defmodule CucumberMessages do
   """
   def convert_envelopes_to(envelopes, :ndjson) do
     Enum.map(envelopes, &CucumberMessages.Writer.envelope_to_ndjson!/1)
-    |> Enum.map(&Jason.encode!(&1))
     |> Enum.join("\n")
     |> case do
       "" -> ""