commit 2f8696e1492c23a2d08562b2dead973ef0d82d2e Author: Sreenatha Bhatlapenumarthi sreenatha.dev@gmail.com Date: Sun Mar 23 21:48:31 2014 +0530

Removed threading and modified the 'calculate_sum' method (#9889) --- task-9889/tshirt.py | 149 ++++++++++++++++++++++----------------------------- 1 file changed, 63 insertions(+), 86 deletions(-)

diff --git a/task-9889/tshirt.py b/task-9889/tshirt.py index feba0ad..ec67881 100755 --- a/task-9889/tshirt.py +++ b/task-9889/tshirt.py @@ -4,16 +4,10 @@ import urllib, urllib2 import json import threading import _strptime -from datetime import datetime +from datetime import timedelta, datetime

TWO_MONTHS = 2 * 30 * 86400

-# Global variables -bandwidth_data = [] -uptime_data = [] -exit_policies = [] -thread_lock = threading.Lock() -

def print_debug_info(fingerprint, exit_port_check, uptime_percent, avg_bandwidth): """ Provides debugging information about relay operator's eligibility @@ -59,29 +53,6 @@ def print_debug_info(fingerprint, exit_port_check, uptime_percent, avg_bandwidth print("")

-def calculate_sum(relay_history): - """ Calculates the sum of values in 2-month time frame """ - - two_months_values = TWO_MONTHS / relay_history['interval'] - _sum = 0 - for i in relay_history['values'][-two_months_values:]: - if i is not 'null' and i is not None: - _sum += (i/1000.0) - return _sum * relay_history['interval'] - - -def check_in_ports(ports): - """ Checks for port 80 is present in the ports list """ - - for entry in ports: - if entry == '80': - return True - if '-' in entry: - [x,y] = entry.split('-') - if 80 in range(int(x),int(y)): - return True - return False - def fetch_data(doc_type, params): """ Fetches onionoo data and returns response formatted as a dictionary """

@@ -103,6 +74,57 @@ def fetch_data(doc_type, params): return response_dict

+def calculate_2mo_avg(response, response_type): + """ Calculates the average of values in 2-month time frame """ + + # Check if required data is present in the response + if response_type == 'uptime': + if '3_months' not in response['uptime'].keys(): + return -1 + data = response['uptime']['3_months'] + elif response_type == 'bandwidth': + if '3_months' not in response['write_history'].keys(): + return -1 + data = response['write_history']['3_months'] + # Sum up all values within past 2 months + _sum = 0 + count = 0 + today = datetime.now() + first = datetime.strptime(data['first'], "%Y-%m-%d %H:%M:%S") + last = datetime.strptime(data['last'], "%Y-%m-%d %H:%M:%S") + for i in range(data['count']): + value_date = first + timedelta(seconds=(i * float(data['interval']))) + if (today - value_date).total_seconds() <= TWO_MONTHS: + if data['values'][i] not in [None, 'null']: + _sum += (data['values'][i]) + count += 1 + # Find number of values between last and today + time_interval = int((today - last).total_seconds()) + last_today_values = time_interval/data['interval'] + # Calculate the result + if response_type == 'uptime': + total_up_time = _sum * data['factor'] * data['interval'] + uptime_percent = round(total_up_time * 100 / TWO_MONTHS, 2) + return uptime_percent + elif response_type == 'bandwidth': + total_values = count + last_today_values + result = (_sum * data['factor'])/total_values + return round(result/1000.0, 2) + + +def check_in_ports(ports): + """ Checks if port 80 is present in the ports list """ + + for entry in ports: + if entry == '80': + return True + if '-' in entry: + [x,y] = entry.split('-') + if 80 in range(int(x),int(y)): + return True + return False + + def check_exit_port(response): """ Checks if relay allows network traffic to exit through port 80 """

@@ -110,54 +132,29 @@ def check_exit_port(response): if 'accept' in exit_policy: return check_in_ports(exit_policy['accept']) elif 'reject' in exit_policy: - return check_in_ports(exit_policy['reject']) + return not check_in_ports(exit_policy['reject']) return False

def get_uptime_percent(response): """ Calculates the relay's uptime from onionoo's uptime document """

- if '3_months' not in response['uptime'].keys(): - return -1 - uptime = calculate_sum(response['uptime']['3_months']) - uptime_percent = round(uptime/(2*30*864), 2) - return uptime_percent + return calculate_2mo_avg(response, 'uptime')

def get_avg_bandwidth(response): """ Calculates average bandwidth of traffic through the relay """

- if '3_months' not in response['write_history'].keys(): - return -1 - - # Calculate the sum of values in response - bandwidth_data = response['write_history']['3_months'] - traffic_sum = calculate_sum(bandwidth_data) - - # Find number of values between last and today - last_date = datetime.strptime(bandwidth_data['last'], "%Y-%m-%d %H:%M:%S") - today_date = datetime.now() - time_interval = int((today_date - last_date).total_seconds()) - last_today_values = time_interval/bandwidth_data['interval'] + return calculate_2mo_avg(response, 'bandwidth')

- # Calculate the result - two_months_values = TWO_MONTHS/bandwidth_data['interval'] - total_values = two_months_values + last_today_values - result = (traffic_sum * bandwidth_data['factor'])/total_values - - return round(result/1000.0,2) -

def check_tshirt(search_query): - """ Fetches required onionoo documents and invokes threads """ - - global exit_policies - global uptime_data - global bandwidth_data - global thread_lock + """ Fetches required onionoo documents and evaluates the + t-shirt qualification criteria for each of the relays """

# Fetch the required documents from onionoo params = { + 'type' : 'relay', 'search' : search_query } bandwidth_data = fetch_data('bandwidth', params)['relays'] @@ -168,33 +165,13 @@ def check_tshirt(search_query): exit_policies = fetch_data('details', params)['relays'] print "Fetched details document"

- # Create and start the threads - threads = [] for i in range(len(exit_policies)): - threads.append(relay_thread(i)) - threads[-1].start() - # Wait for the threads to finish - for thread in threads: - thread.join() - - -class relay_thread(threading.Thread): - """ A subclass of the Thread class that handles relay-specific data""" - def __init__(self, thread_id): - threading.Thread.__init__(self) - self.thread_id = thread_id - def run(self): - global exit_polices - global uptime_data - global bandwidth_data - fingerprint = exit_policies[self.thread_id]['fingerprint'] - exit_port_check = check_exit_port(exit_policies[self.thread_id]) - uptime_percent = get_uptime_percent(uptime_data[self.thread_id]) - avg_bandwidth = get_avg_bandwidth(bandwidth_data[self.thread_id]) - thread_lock.acquire() + fingerprint = exit_policies[i]['fingerprint'] + exit_port_check = check_exit_port(exit_policies[i]) + uptime_percent = get_uptime_percent(uptime_data[i]) + avg_bandwidth = get_avg_bandwidth(bandwidth_data[i]) print_debug_info(fingerprint, exit_port_check, uptime_percent, avg_bandwidth) - thread_lock.release() - +

if __name__ == "__main__": search_query = raw_input('Enter relay search-query : ')