Collect process stat data

def collect(self):
        """
        Collect process stat data
        """
        if not os.access(self.PROC, os.R_OK):
            return False

        # Open PROC file
        file = open(self.PROC, 'r')

        # Get data
        for line in file:
            if line.startswith('slabinfo'):
                continue

            if line.startswith('#'):
                keys = line.split()[1:]
                continue

            data = line.split()

            for key in ['<active_objs>', '<num_objs>', '<objsize>',
                        '<objperslab>', '<pagesperslab>']:
                i = keys.index(key)
                metric_name = data[0] + '.' + key.replace(
                    '<', '').replace('>', '')
                metric_value = int(data[i])
                self.publish(metric_name, metric_value)

            for key in ['<limit>', '<batchcount>', '<sharedfactor>']:
                i = keys.index(key)
                metric_name = data[0] + '.tunables.' + key.replace(
                    '<', '').replace('>', '')
                metric_value = int(data[i])
                self.publish(metric_name, metric_value)

            for key in ['<active_slabs>', '<num_slabs>', '<sharedavail>']:
                i = keys.index(key)
                metric_name = data[0] + '.slabdata.' + key.replace(
                    '<', '').replace('>', '')
                metric_value = int(data[i])
                self.publish(metric_name, metric_value)

        # Close file
        file.close()