pidfile.rb in rexec-1.2.3

- old
+ new
@@ -1,64 +1,69 @@
-# Copyright (c) 2007, 2009 Samuel Williams. Released under the GNU GPLv3.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# Copyright (c) 2007, 2009, 2011 Samuel G. D. Williams. <http://www.oriontransfer.co.nz>
 # 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
 # 
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
 
 module RExec
-  module Daemon
-    # This module controls the storage and retrieval of process id files.
-    module PidFile
-      # Saves the pid for the given daemon
-      def self.store(daemon, pid)
-        File.open(daemon.pid_fn, 'w') {|f| f << pid}
-      end
+	module Daemon
+		# This module controls the storage and retrieval of process id files.
+		module PidFile
+			# Saves the pid for the given daemon
+			def self.store(daemon, pid)
+				File.open(daemon.pid_fn, 'w') {|f| f << pid}
+			end
 
-      # Retrieves the pid for the given daemon
-      def self.recall(daemon)
-        IO.read(daemon.pid_fn).to_i rescue nil
-      end
+			# Retrieves the pid for the given daemon
+			def self.recall(daemon)
+				IO.read(daemon.pid_fn).to_i rescue nil
+			end
 
-      # Removes the pid saved for a particular daemon
-      def self.clear(daemon)
-        if File.exist? daemon.pid_fn
-          FileUtils.rm(daemon.pid_fn)
-        end
-      end
+			# Removes the pid saved for a particular daemon
+			def self.clear(daemon)
+				if File.exist? daemon.pid_fn
+					FileUtils.rm(daemon.pid_fn)
+				end
+			end
 
-      # Checks whether the daemon is running by checking the saved pid and checking the corresponding process
-      def self.running(daemon)
-        pid = recall(daemon)
+			# Checks whether the daemon is running by checking the saved pid and checking the corresponding process
+			def self.running(daemon)
+				pid = recall(daemon)
 
-        return false if pid == nil
+				return false if pid == nil
 
-        gpid = Process.getpgid(pid) rescue nil
+				gpid = Process.getpgid(pid) rescue nil
 
-        return gpid != nil ? true : false
-      end
+				return gpid != nil ? true : false
+			end
 
-      # Remove the pid file if the daemon is not running
-      def self.cleanup(daemon)
-        clear(daemon) unless running(daemon)
-      end
-      
-      # This function returns the status of the daemon. This can be one of <tt>:running</tt>, <tt>:unknown</tt> (pid file exists but no 
-      # corresponding process can be found) or <tt>:stopped</tt>.
-      def self.status(daemon)
-        if File.exist? daemon.pid_fn
-          return PidFile.running(daemon) ? :running : :unknown
-        else
-          return :stopped
-        end
-      end
-    end
-  end
+			# Remove the pid file if the daemon is not running
+			def self.cleanup(daemon)
+				clear(daemon) unless running(daemon)
+			end
+
+			# This function returns the status of the daemon. This can be one of +:running+, +:unknown+ (pid file exists but no 
+			# corresponding process can be found) or +:stopped+.
+			def self.status(daemon)
+				if File.exist? daemon.pid_fn
+					return PidFile.running(daemon) ? :running : :unknown
+				else
+					return :stopped
+				end
+			end
+		end
+	end
 end