author=carlhu - Update plugins/dstat_mysql5_cmds.py -- reset counters…

… to zero.

fixes issue #28

plugins/dstat_mysql5_cmds.py

@@ -6,15 +6,6 @@
 global mysql_pwd
 mysql_pwd = os.getenv('DSTAT_MYSQL_PWD')
 
-global mysql_host
-mysql_host = os.getenv('DSTAT_MYSQL_HOST')
-
-global mysql_port
-mysql_port = os.getenv('DSTAT_MYSQL_PORT')
-
-global mysql_socket
-mysql_socket = os.getenv('DSTAT_MYSQL_SOCKET')
-
 class dstat_plugin(dstat):
     """
     Plugin for MySQL 5 commands.
@@ -31,19 +22,7 @@ def check(self):
         global MySQLdb
         import MySQLdb
         try:
-            args = {}
-            if mysql_user:
-                args['user'] = mysql_user
-            if mysql_pwd:
-                args['passwd'] = mysql_pwd
-            if mysql_host:
-                args['host'] = mysql_host
-            if mysql_port:
-                args['port'] = mysql_port
-            if mysql_socket:
-                args['unix_socket'] = mysql_socket
-
-            self.db = MySQLdb.connect(**args)
+            self.db = MySQLdb.connect(user=mysql_user, passwd=mysql_pwd)
         except Exception, e:
             raise Exception, 'Cannot interface with MySQL server: %s' % e
 
@@ -54,7 +33,9 @@ def extract(self):
                 c.execute("""show global status like '%s';""" % name)
                 line = c.fetchone()
                 if line[0] in self.vars:
-                    self.set2[line[0]] = long(line[1])
+                    if line[0] + 'raw' in self.set2:
+                        self.set2[line[0]] = long(line[1]) - self.set2[line[0] + 'raw']
+                    self.set2[line[0] + 'raw'] = long(line[1])
 
             for name in self.vars:
                 self.val[name] = self.set2[name] * 1.0 / elapsed