agent check example parsing the values from directory listing

agent_check_parse_values.py

import os
import pprint
import subprocess
import random
from checks import AgentCheck

# for logging
def log_parsed_output(output_list):
    with open(writepath, mode) as f:
        for i in output_list:
            f.write(i+'\n')

# for metric parsing
def parse_output_to_metrics(output_list):
    parsed_list = []
    try:
        for i in output_list:
            line_list = i.split(' ')
            parsed_list.append(line_list)
    except Exception as e:
        print('error "{}" line: "{}"'.format(e, i))
    return parsed_list

def remove_spaces(line_list):
    metric_list = []
    for x in range(0, len(line_list)):
        if line_list[x]:
            metric_list.append(line_list[x])
    return metric_list

class CheckValue(AgentCheck):

    def check(self, instance):
        ## main
        writepath = '/home/ubuntu/logfile.txt'
        mode = 'a' if os.path.exists(writepath) else 'w'

        output = subprocess.check_output(['ls', '-l'])
        output_list = output.split('\n')

        parsed_list = parse_output_to_metrics(output_list)
        metrics = []
        for line_list in parsed_list:
            metrics.append(remove_spaces(line_list))

        metric_list = []
        for metric in metrics:
            try:
                m = {}
                tags = []
                m['metric'] = 'my_metric_name'
                m['value'] = metric[4]
                m['tags'] = ['user:{}'.format(l[3]), 'file:{}'.format(metric[-1])]
                metric_list.append(m)
                pprint.pprint(m)
            except Exception as e:
                print('error "{}" line: "{}"'.format(e, metric))
        for m in metric_list:
            try:
                self.gauge(m['metric'], m['value'], tags=m['tags'])
            except Exception as e:
                print(e)