refactor: make config.primary_role a Role instead of a string

lib/kamal/cli/healthcheck.rb

@@ -3,7 +3,7 @@ class Kamal::Cli::Healthcheck < Kamal::Cli::Base
 
   desc "perform", "Health check current app version"
   def perform
-    raise "The primary host is not configured to run Traefik" unless KAMAL.config.role(KAMAL.config.primary_role).running_traefik?
+    raise "The primary host is not configured to run Traefik" unless KAMAL.config.primary_role.running_traefik?
     on(KAMAL.primary_host) do
       begin
         execute *KAMAL.healthcheck.run

lib/kamal/cli/main.rb

@@ -38,7 +38,7 @@ def deploy
         say "Ensure Traefik is running...", :magenta
         invoke "kamal:cli:traefik:boot", [], invoke_options
 
-        if KAMAL.config.role(KAMAL.config.primary_role).running_traefik?
+        if KAMAL.config.primary_role.running_traefik?
           say "Ensure app can pass healthcheck...", :magenta
           invoke "kamal:cli:healthcheck:perform", [], invoke_options
         end

lib/kamal/commands/healthcheck.rb

@@ -1,7 +1,7 @@
 class Kamal::Commands::Healthcheck < Kamal::Commands::Base
 
   def run
-    primary = config.role(config.primary_role)
+    primary = config.primary_role
 
     docker :run,
       "--detach",

lib/kamal/configuration.rb

@@ -92,7 +92,7 @@ def all_hosts
   end
 
   def primary_host
-    role(primary_role)&.primary_host
+    primary_role&.primary_host
   end
 
   def traefik_roles
@@ -209,6 +209,10 @@ def asset_path
   end
 
   def primary_role
+    role(primary_role_name)
+  end
+
+  def primary_role_name
     raw_config.primary_role || "web"
   end
 
@@ -264,12 +268,12 @@ def ensure_required_keys_present
         raise ArgumentError, "You must specify a password for the registry in config/deploy.yml (or set the ENV variable if that's used)"
       end
 
-      unless role_names.include?(primary_role)
-        raise ArgumentError, "The primary_role #{primary_role} isn't defined"
+      unless role_names.include?(primary_role_name)
+        raise ArgumentError, "The primary_role #{primary_role_name} isn't defined"
       end
 
-      if role(primary_role).hosts.empty?
-        raise ArgumentError, "No servers specified for the #{primary_role} primary_role"
+      if primary_role.hosts.empty?
+        raise ArgumentError, "No servers specified for the #{primary_role_name} primary_role"
       end
 
       unless allow_empty_roles?

lib/kamal/configuration/role.rb

@@ -101,7 +101,7 @@ def running_traefik?
   end
 
   def primary?
-    @config.primary_role == name
+    @config.primary_role_name == name
   end
 
 

test/commander_test.rb

@@ -74,9 +74,9 @@ class CommanderTest < ActiveSupport::TestCase
   end
 
   test "primary_role" do
-    assert_equal "web", @kamal.primary_role
+    assert_equal "web", @kamal.primary_role_name
     @kamal.specific_roles = "workers"
-    assert_equal "workers", @kamal.primary_role
+    assert_equal "workers", @kamal.primary_role_name
   end
 
   test "roles_on" do

test/configuration_test.rb

@@ -290,14 +290,14 @@ class ConfigurationTest < ActiveSupport::TestCase
   end
 
   test "primary role" do
-    assert_equal "web", @config.primary_role
+    assert_equal "web", @config.primary_role_name
 
     config = Kamal::Configuration.new(@deploy_with_roles.deep_merge({
       servers: { "alternate_web" => { "hosts" => [ "1.1.1.4", "1.1.1.5" ] } },
       primary_role: "alternate_web" } ))
 
 
-    assert_equal "alternate_web", config.primary_role
+    assert_equal "alternate_web", config.primary_role_name
     assert_equal "1.1.1.4", config.primary_host
     assert config.role(:alternate_web).primary? 
     assert config.role(:alternate_web).running_traefik?