gen-config: random_password(id, name)

src/gen-config.cr

@@ -1,5 +1,6 @@
 require "crinja"
 
+require "./service/service.cr"
 require "./config.cr"
 
 def sanitize_path(path)
@@ -70,9 +71,29 @@ class Configure::Context
 			service = (arguments.varargs[0]? || "").to_s.gsub /\//, ':'
 			`get-port #{service}`
 		end
+		options["random_password"] = Crinja.function do
+			id = (arguments.varargs[0]? || options["id"]).to_s
+			password_id = arguments.varargs[1]? || "main"
+
+			env, service = Service.parse_id id
+
+			# FIXME: hardcoded path
+			password_file = "/srv/#{env}/#{service}/password_#{password_id}"
+
+			if File.exists? password_file
+				File.read password_file
+			else
+				password = `dd if=/dev/urandom bs=64 count=1 | base64 -`
+				password = password.gsub('\n', "")
+
+				File.write password_file, password
+
+				password
+			end
+		end
 
 		providers = {} of String => String
-		ENV["SERVICE_TOKENS"].try &.split(':').each do |token|
+		ENV["SERVICE_TOKENS"]?.try &.split(':').each do |token|
 			providers[token] = ENV["#{token.upcase}_PROVIDER"]? || ""
 		end
 		options["providers"] = providers
@@ -102,5 +123,8 @@ begin
 rescue e : Configure::Exception
 	STDERR.puts "Fatal error: #{e.message}"
 	exit 1
+rescue e : Crinja::TypeError
+	STDERR.puts "Error reading template: #{e.message}"
+	exit 1
 end
 

src/service/service.cr

@@ -353,6 +353,20 @@ class Service
 		id == self.id || (@environment.name == "root" && id == "root/#{name}")
 	end
 
+	def self.parse_id(id) : Tuple(String, String)
+		s = id.split '/'
+
+		environment = s[0]
+		service = s[1]?
+
+		if service.nil?
+			service = environment
+			environment = "root"
+		end
+
+		{environment, service}
+	end
+
 	alias ServiceTree = Array(ServiceTree) | Service
 
 	# Returns a dependency tree.