Add Client#healthy! for health checks.

Author: ioquatix

lib/async/container/notify/client.rb

@@ -17,6 +17,12 @@ def ready!(**message)
 					send(ready: true, **message)
 				end
 
+				# Notify the parent controller that the child is healthy.
+				# @parameters message [Hash] Additional details to send with the message.
+				def healthy!(**message)
+					send(healthy: true, **message)
+				end
+				
 				# Notify the parent controller that the child is reloading.
 				# @parameters message [Hash] Additional details to send with the message.
 				def reloading!(**message)

releases.md

@@ -1,5 +1,9 @@
 # Releases
 
+## Unreleased
+
+  - Introduce `Client#healthy!` for sending health check messages.
+
 ## v0.28.0
 
   - Add `startup_timeout` parameter to `spawn` and `run` methods for detecting processes that hang during startup and never become ready.

test/async/container/notify.rb

@@ -51,6 +51,34 @@
 		end
 	end
 
+	with "#healthy!" do
+		it "sends healthy message" do
+			context = server.bind
+				
+			client.healthy!
+				
+			message = context.receive
+				
+			expect(message).to have_keys(
+				healthy: be == true
+			)
+		end
+			
+		it "sends healthy message with additional details" do
+			context = server.bind
+				
+			client.healthy!(status: "All systems operational", uptime: 3600)
+				
+			message = context.receive
+				
+			expect(message).to have_keys(
+				healthy: be == true,
+				status: be == "All systems operational",
+				uptime: be == 3600
+			)
+		end
+	end
+		
 	with "#send" do
 		it "sends message" do
 			context = server.bind