php error and warning logging parsing script to use with logster

phplogster

import time
import re

from logster_helper import MetricObject, LogsterParser
from logster_helper import LogsterParsingException

class phplogster(LogsterParser):

    def __init__(self):
        '''Initialize any data structures or variables needed for keeping track
        of the tasty bits we find in the log we are parsing.'''
        self.php_error = 0
        self.php_warning = 0
        
        # Regular expression for matching lines we are interested in, and capturing
        # fields from the line (in this case, http_status_code).
        self.reg = re.compile('.*error.*')
        self.reg_warn = re.compile('.*warning.*')


    def parse_line(self, line):
        '''This function should digest the contents of one line at a time, updating
        object's state variables. Takes a single argument, the line to be parsed.'''

        try:
            # Apply regular expression to each line and extract interesting bits.
            regMatch = self.reg.match(line)



            if regMatch:
                linebits = regMatch.groupdict()
                self.php_error += 1

            else:
                regMatchWarn = self.reg_warn(line)
                if regMatchWarn:
                    self.php_warning += 1
                else:
                    raise LogsterParsingException, "regmatch failed to match"






        except Exception, e:
            raise LogsterParsingException, "regmatch or contents failed with %s" % e


    def get_state(self, duration):
        '''Run any necessary calculations on the data collected from the logs
        and return a list of metric objects.'''
        self.duration = duration

        # Return a list of metrics objects
        return [
            MetricObject("php_error", (self.php_error / self.duration), "Responses per sec"),
            MetricObject("php_warning", (self.php_warning / self.duration), "Responses per sec"),
        ]