Add supervisor example.

Author: ioquatix

examples/supervisor/gems.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+gem "async-service", path: "../../"
+gem "async-container-supervisor"

examples/supervisor/service.rb

@@ -0,0 +1,57 @@
+#!/usr/bin/env async-service
+# frozen_string_literal: true
+
+# Released under the MIT License.
+# Copyright, 2024-2025, by Samuel Williams.
+
+require "async/container/supervisor"
+require "async/service/managed_service"
+require "async/service/managed_environment"
+
+class MemoryUsageService < Async::Service::ManagedService
+	def run(instance, evaluator)
+		things = []
+		
+		Async do
+			while true
+				sleep(rand)
+				things << " " * 1024 * 1024 * 10
+                                Console.info(self, "Allocated #{things.last.bytesize} bytes...")
+			end
+		ensure
+			Fiber.blocking do
+				Console.info(self, "Blocking for cleanup...")
+				sleep
+			ensure
+				Console.info(self, "Cleanup complete.")
+			end
+		end
+	end
+end
+
+service "memory-usage" do
+	include Async::Service::ManagedEnvironment
+	
+	service_class MemoryUsageService
+	
+	count 40
+	
+	health_check_timeout 10
+	
+	include Async::Container::Supervisor::Supervised
+end
+
+service "supervisor" do
+	include Async::Container::Supervisor::Environment
+	
+	monitors do
+		[
+			Async::Container::Supervisor::MemoryMonitor.new(
+				# The interval at which to check for memory leaks.
+				interval: 10,
+				maximum_size_limit: 1024 * 1024 * 30,
+				increase_limit: nil,
+			)
+		]
+	end
+end