release: 发布版本 60176fa，RuboCop 零告警，网页新增版本号展示
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+59
-55
@@ -18,30 +18,31 @@ PERSISTENCE_PERIOD = 30 # Wait for systemctl to take the order.
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require 'logger'
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require_relative 'server_status_detector'
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# rubocop:disable Style/ClassVars
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class MethodExecutor
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public
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RST_COUNTS_LIMIT = 10
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@@rst_counter = 0
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# Initialize the standard log system.
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@@logger = Logger.new(STDOUT) # This script will be launched as a systemd server.
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STDOUT.sync = true
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STDERR.sync = true
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@@logger = Logger.new($stdout) # This script will be launched as a systemd server.
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$stdout.sync = true
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$stderr.sync = true
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# Fetch the environmental variable and convert it into log level.
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@@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
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when nil # Default config.
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Logger::Severity::DEBUG
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when "debug"
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Logger::Severity::DEBUG
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when "info"
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Logger::Severity::INFO
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when "warn"
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Logger::Severity::WARN
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when "error"
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Logger::Severity::ERROR
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else
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raise ArgumentError
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@@logger.level = case ENV.fetch('LOG_LEVEL', nil) # @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
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when nil, 'debug' # Default config.
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Logger::Severity::DEBUG
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when 'info'
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Logger::Severity::INFO
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when 'warn'
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Logger::Severity::WARN
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when 'error'
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Logger::Severity::ERROR
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else
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raise ArgumentError
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end
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@@logger.progname = "MineSentinel"
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@@logger.progname = 'MineSentinel'
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# rubocop:disable Metrics/MethodLength
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# @param level [String] "info" | "warn" | "error" | "debug"
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# @param module_name [String]
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@@ -49,82 +50,85 @@ class MethodExecutor
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# @return [void]
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def self.record(level, module_name, message)
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case level
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when "info"
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when 'info'
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@@logger.info("#{module_name}: #{message}")
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when "warn"
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when 'warn'
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@@logger.warn("#{module_name}: #{message}")
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when "error"
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when 'error'
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@@logger.error("#{module_name}: #{message}")
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when "debug"
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when 'debug'
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@@logger.debug("#{module_name}: #{message}")
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else
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raise ArgumentError
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end
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end
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# rubocop:enable Metrics/MethodLength
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# rubocop:disable Metrics/MethodLength, Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
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# @return [void]
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def self.reset_minecraft_server
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self.record("info", "reset", "Attempt ##{@@rst_counter + 1} to reset Minecraft server.")
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record('info', 'reset', "Attempt ##{@@rst_counter + 1} to reset Minecraft server.")
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if @@rst_counter >= RST_COUNTS_LIMIT
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self.record("error", "reset",
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"Tried #{RST_COUNTS_LIMIT} times and failed, now I'll idle until server is manually restarted.")
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while true
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record('error', 'reset',
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"Tried #{RST_COUNTS_LIMIT} times and failed, now I'll idle until server is manually restarted.")
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loop do
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sleep 10
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SystemdNotifier.notify("WATCHDOG=1") if defined?(SystemdNotifier)
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if ServerStatusDetector::MinecraftServer.self_diag[:type] == true
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self.record("info", "reset", "Server recovered! Resuming normal monitoring.")
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@@rst_counter = 0
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return
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end
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SystemdNotifier.notify('WATCHDOG=1') if defined?(SystemdNotifier)
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next unless ServerStatusDetector::MinecraftServer.self_diag[:type] == true
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record('info', 'reset', 'Server recovered! Resuming normal monitoring.')
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@@rst_counter = 0
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return
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end
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end
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@@rst_counter += 1
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unless Process.euid == 0
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self.record("error", "reset", "Permission denied: root required to manage systemd services.")
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unless Process.euid.zero?
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record('error', 'reset', 'Permission denied: root required to manage systemd services.')
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raise Errno::EPERM
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end
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self.record("info", "reset", "Spawning 'systemctl restart minecraft' (PID will be captured)...")
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pid = spawn "systemctl restart minecraft"
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self.record("debug", "reset", "systemctl restart spawned with PID #{pid}.")
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record('info', 'reset', "Spawning 'systemctl restart minecraft' (PID will be captured)...")
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pid = spawn 'systemctl restart minecraft'
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record('debug', 'reset', "systemctl restart spawned with PID #{pid}.")
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tick_beg = Time.now
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while true
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# rubocop:disable Metrics/BlockLength
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loop do
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sleep 0.5
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SystemdNotifier.notify("WATCHDOG=1")
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SystemdNotifier.notify('WATCHDOG=1')
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proc_status = Process.waitpid2(pid, Process::WNOHANG)
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if proc_status # 子进程已退出，返回 [pid, status]
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_, status = proc_status
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elapsed = (Time.now - tick_beg).round(2)
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if status.success?
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self.record("info", "reset", "'systemctl restart' succeeded in #{elapsed}s.")
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record('info', 'reset', "'systemctl restart' succeeded in #{elapsed}s.")
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@@rst_counter = 0 # 成功时重置计数器
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break
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else
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self.record("error", "reset", "'systemctl restart' failed with exitcode #{status.exitstatus} after #{elapsed}s.")
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break
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record('error', 'reset',
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"'systemctl restart' failed with exitcode #{status.exitstatus} after #{elapsed}s.")
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end
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break
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else # 子进程仍在运行 (WNOHANG 返回 nil)
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if Time.now - tick_beg > PERSISTENCE_PERIOD then
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self.record("warn", "reset",
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"'systemctl restart' timed out after #{PERSISTENCE_PERIOD}s. Force-killing PID #{pid}...")
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if Time.now - tick_beg > PERSISTENCE_PERIOD
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record('warn', 'reset',
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"'systemctl restart' timed out after #{PERSISTENCE_PERIOD}s. Force-killing PID #{pid}...")
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system "kill -9 #{pid}"
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self.record("warn", "reset", "Running 'systemctl kill minecraft' (last resort)...")
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system "systemctl kill minecraft" # 没招了，毁灭吧
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record('warn', 'reset', "Running 'systemctl kill minecraft' (last resort)...")
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system 'systemctl kill minecraft' # 没招了，毁灭吧
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sleep 0.5
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self.record("info", "reset", "Running 'systemctl start minecraft' (rebirth)...")
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system "systemctl start minecraft" # 重生
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self.record("info", "reset", "Force-reset sequence completed.")
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record('info', 'reset', "Running 'systemctl start minecraft' (rebirth)...")
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system 'systemctl start minecraft' # 重生
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record('info', 'reset', 'Force-reset sequence completed.')
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break
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end
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end
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# rubocop:enable Metrics/BlockLength
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end
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end
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# rubocop:enable Metrics/MethodLength, Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
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# rubocop:enable Style/ClassVars
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end
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