dev1.0 版本

2026-06-07 11:05:26 +08:00
commit 777c8b2021
10 changed files with 505 additions and 0 deletions
@@ -0,0 +1,114 @@
+# <<*>> -^v- SNOWARE APPLICATION
+# usage: Automatic operator implementation.
+# author: S.A.
+# time: 2026-06-07
+# license: All rights received.
+
+# frozen_string_literal: true
+
+PERSISTENCE_PERIOD = 30 # Wait for systemctl to take the order.
+
+require 'logger'
+require_relative 'server_status_detector'
+class MethodExecutor
+  public
+  RST_COUNTS_LIMIT = 10
+  @@rst_counter = 0
+  # Initialize the standard log system.
+  @@logger = Logger.new(STDOUT) # This script will be launched as a systemd server.
+  # Fetch the environmental variable and convert it into log level.
+  @@logger.level = case ENV["LOG_LEVEL"] # @为单个实例（半生不熟的概念，貌似是在不同的空间独立创建），@@为共享同一个
+                      when nil # Default config.
+                        Logger::Severity::DEBUG
+                      when "debug"
+                        Logger::Severity::DEBUG
+                      when "info"
+                        Logger::Severity::INFO
+                      when "warn"
+                        Logger::Severity::WARN
+                      when "error"
+                        Logger::Severity::ERROR
+                      else
+                        raise ArgumentError
+                   end
+  @@logger.progname = "MineSentinel"
+
+  def self.record(level, module_name, message)
+    case level
+    when "info"
+      @@logger.info("#{module_name}: #{message}")
+    when "warn"
+      @@logger.warn("#{module_name}: #{message}")
+    when "error"
+      @@logger.error("#{module_name}: #{message}")
+    when "debug"
+      @@logger.debug("#{module_name}: #{message}")
+    else
+      raise ArgumentError
+    end
+  end
+
+  def self.reset_minecraft_server
+
+    self.record("info", "reset", "Attempt ##{@@rst_counter + 1} to reset Minecraft server.")
+
+    if @@rst_counter >= RST_COUNTS_LIMIT
+      self.record("error", "reset",
+                  "Tried #{RST_COUNTS_LIMIT} times and failed, now I'll idle until server is manually restarted.")
+      while true
+        sleep 10
+        if ServerStatusDetector::MinecraftServer.self_diag[:type] == true
+          self.record("info", "reset", "Server recovered! Resuming normal monitoring.")
+          @@rst_counter = 0
+          return
+        end
+      end
+    end
+
+    @@rst_counter += 1
+
+      unless Process.euid == 0
+        self.record("error", "reset", "Permission denied: root required to manage systemd services.")
+        raise Errno::EPERM
+      end
+
+      self.record("info", "reset", "Spawning 'systemctl restart minecraft' (PID will be captured)...")
+      pid = spawn "systemctl restart minecraft"
+      self.record("debug", "reset", "systemctl restart spawned with PID #{pid}.")
+      tick_beg = Time.now
+
+      while true
+        sleep 0.5
+        begin
+        proc_status = Process.waitpid2(pid, Process::WNOHANG)
+        if proc_status # 子进程已退出，返回 [pid, status]
+          _, status = proc_status
+          elapsed = (Time.now - tick_beg).round(2)
+          if status.success?
+            self.record("info", "reset", "'systemctl restart' succeeded in #{elapsed}s.")
+            @@rst_counter = 0 # 成功时重置计数器
+            break
+          else
+            self.record("error", "reset", "'systemctl restart' failed with exitcode #{status.exitstatus} after #{elapsed}s.")
+            break
+          end
+        else # 子进程仍在运行 (WNOHANG 返回 nil)
+          if Time.now - tick_beg > PERSISTENCE_PERIOD then
+            self.record("warn", "reset",
+                        "'systemctl restart' timed out after #{PERSISTENCE_PERIOD}s. Force-killing PID #{pid}...")
+            system "kill -9 #{pid}"
+            self.record("warn", "reset", "Running 'systemctl kill minecraft' (last resort)...")
+            system "systemctl kill minecraft" # 没招了，毁灭吧
+            sleep 0.5
+            self.record("info", "reset", "Running 'systemctl start minecraft' (rebirth)...")
+            system "systemctl start minecraft" # 重生
+            self.record("info", "reset", "Force-reset sequence completed.")
+            break
+          end
+        end
+        end
+      end
+
+
+  end
+  end