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ruby-changes:32993

From: nobu <ko1@a...>
Date: Fri, 21 Feb 2014 16:45:59 +0900 (JST)
Subject: [ruby-changes:32993] nobu:r45072 (trunk): logger.rb: DST

nobu	2014-02-21 16:45:55 +0900 (Fri, 21 Feb 2014)

  New Revision: 45072

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=45072

  Log:
    logger.rb: DST
    
    * lib/logger.rb (next_rotate_time, previous_period_end): consider
      DST change.

  Modified files:
    trunk/ChangeLog
    trunk/lib/logger.rb
    trunk/test/logger/test_logdevice.rb
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 45071)
+++ ChangeLog	(revision 45072)
@@ -1,4 +1,7 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
-Fri Feb 21 16:11:02 2014  Nobuyoshi Nakada  <nobu@r...>
+Fri Feb 21 16:45:54 2014  Nobuyoshi Nakada  <nobu@r...>
+
+	* lib/logger.rb (next_rotate_time, previous_period_end): consider
+	  DST change.
 
 	* lib/logger.rb (Logger::LogDevice#check_shift_log): compare the
 	  current time with the time for the next rotation to fix rotation
Index: lib/logger.rb
===================================================================
--- lib/logger.rb	(revision 45071)
+++ lib/logger.rb	(revision 45072)
@@ -714,29 +714,26 @@ private https://github.com/ruby/ruby/blob/trunk/lib/logger.rb#L714
       when /^monthly$/
         t = Time.mktime(now.year, now.month, 1) + SiD * 31
         mday = (1 if t.mday > 1)
-        if mday
-          t = Time.mktime(t.year, t.month, mday)
-        end
       else
         return now
       end
+      if mday or t.hour.nonzero? or t.min.nonzero? or t.sec.nonzero?
+        t = Time.mktime(t.year, t.month, mday || (t.mday + (t.hour > 12 ? 1 : 0)))
+      end
       t
     end
 
     def previous_period_end(now, shift_age)
       case shift_age
       when /^daily$/
-        eod(now - 1 * SiD)
+        t = Time.mktime(now.year, now.month, now.mday) - SiD / 2
       when /^weekly$/
-        eod(now - ((now.wday + 1) * SiD))
+        t = Time.mktime(now.year, now.month, now.mday) - (SiD * (now.wday + 1) + SiD / 2)
       when /^monthly$/
-        eod(now - now.mday * SiD)
+        t = Time.mktime(now.year, now.month, 1) - SiD / 2
       else
-        now
+        return now
       end
-    end
-
-    def eod(t)
       Time.mktime(t.year, t.month, t.mday, 23, 59, 59)
     end
   end
Index: test/logger/test_logdevice.rb
===================================================================
--- test/logger/test_logdevice.rb	(revision 45071)
+++ test/logger/test_logdevice.rb	(revision 45072)
@@ -362,6 +362,44 @@ class TestLogDevice < Test::Unit::TestCa https://github.com/ruby/ruby/blob/trunk/test/logger/test_logdevice.rb#L362
     end
   end
 
+  def test_shifting_dst_change
+    Dir.mktmpdir do |tmpdir|
+      system({"TZ"=>"Europe/London"}, EnvUtil.rubybin, *%W"--disable=gems -rlogger -C#{tmpdir} -e", <<-'end;')
+        begin
+          module FakeTime
+            attr_accessor :now
+          end
+
+          class << Time
+            prepend FakeTime
+          end
+
+          log = "log"
+          File.open(log, "w") {}
+
+          Time.now = Time.mktime(2014, 3, 30, 0, 1, 1)
+          File.utime(Time.now, Time.now, log)
+
+          dev = Logger::LogDevice.new(log, shift_age: 'daily')
+          dev.write("#{Time.now} hello-1\n")
+          File.utime(*[Time.mktime(2014, 3, 30, 0, 2, 3)]*2, log)
+
+          Time.now = Time.mktime(2014, 3, 31, 0, 1, 1)
+          File.utime(Time.now, Time.now, log)
+          dev.write("#{Time.now} hello-2\n")
+        ensure
+          dev.close
+        end
+      end;
+
+      log = File.join(tmpdir, "log")
+      cont = File.read(log)
+      assert_match(/hello-2/, cont)
+      assert_not_match(/hello-1/, cont)
+      assert_file.exist?(log+".20140330")
+    end
+  end
+
   private
 
   def run_children(n, args, src)

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