An advanced script to summarize a Snowflake(Tor Project) Log file with the corresponding docker compose file

analyze_snowflake_logs.py

# This Script uses the following dependancies
# pip install nums-from-string
# pip install datetime
#
# To Run this script type:
# python analyze_snowflake_logs.py <Log File Name>
# 
# The default <Log File Name> is ./docker_snowflake.log
#
# Example:
# python analyze_snowflake_logs.py snow.log
#
# Written By Allstreamer_
# Licenced Under MIT
#
# Enhanced by MariusHerget

import nums_from_string
import sys
from datetime import datetime, timedelta

# Format of your timestamps in the beginning of the log
# e.g. "2022/01/01 16:50:30 <LOG ENTRY>" => "%Y/%m/%d %H:%M:%S"
timestamp_format = "%Y/%m/%d %H:%M:%S"

# Log file path from arguments (default: ./docker_snowflake.log)
logfile_path = sys.argv[1] if len(sys.argv) > 1 else "./docker_snowflake.log"

# Read in log file as lines
lines_all = []
with open(logfile_path, "r") as file:
    lines_all = file.readlines()

# Catch phrase for lines who do not start with a timestamp
def catchTimestampException(rowSubString, timestampFormat):
        try:
            return datetime.strptime(rowSubString, timestampFormat)
        except Exception as e:
            print(e)
            return datetime.strptime("1970/01/01 00:00:00", "%Y/%m/%d %H:%M:%S")
        

# Filter the log lines based on a time delta in hours
def filterLinesBasedOnTimeDelta(log_lines, hours):
    now = datetime.now()
    length_timestamp_format = len(datetime.strftime(now, timestamp_format))
    return filter(lambda row: now-timedelta(hours=hours) <= catchTimestampException(row[0:length_timestamp_format], timestamp_format) <= now, log_lines)


# Convert traffic information (in B, KB, MB, or GB) to B (Bytes) and add up to a sum
def get_byte_count(log_lines):
   byte_count = 0
   for row in log_lines:
      symbols = row.split(" ")

      if symbols[2] == "B":
         byte_count += int(symbols[1])
      elif symbols[2] == "KB":
         byte_count += int(symbols[1]) * 1024
      elif symbols[2] == "MB":
         byte_count += int(symbols[1]) * 1024 * 1024
      elif symbols[2] == "GB":
         byte_count += int(symbols[1]) * 1024 * 1024 * 1024
   return byte_count

# Filter important lines from the log
# Extract number of connections, uploaded traffic in GB and download traffic in GB
def getDataFromLines(lines):
   # Filter out important lines (Traffic information)
   lines = [row.strip() for row in lines]
   lines = filter(lambda row: "In the" in row, lines)
   lines = [row.split(",", 1)[1] for row in lines]

   # Filter out all traffic log lines who did not had any connection
   lines = list(filter(lambda row: not nums_from_string.get_nums(row)[0] == 0, lines))

   # Extract number of connections as a sum
   connections = sum([nums_from_string.get_nums(row)[0] for row in lines])

   # Extract upload and download data
   lines = [row.split("Relayed")[1] for row in lines]
   upload = [row.split(",")[0].strip() for row in lines]
   download = [row.split(",")[1].strip()[:-1] for row in lines]

   # Convert upload/download data to GB
   upload_gb = get_byte_count(upload) / 1024 / 1024 / 1024
   download_gb = get_byte_count(download) / 1024 / 1024 / 1024

   # Return information as a dictionary for better structure
   return {'connections': connections, 'upload_gb': upload_gb, 'download_gb': download_gb}

# Get the statistics for various time windows
# e.g. all time  => getDataFromLines(lines_all, 24)
# e.g. last 24h  => getDataFromLines(filterLinesBasedOnTimeDelta(lines_all, 24))
# e.g. last Week => getDataFromLines(filterLinesBasedOnTimeDelta(lines_all, 24 * 7))
stats = {
   'All time': getDataFromLines(lines_all),
   'Last 24h':  getDataFromLines(filterLinesBasedOnTimeDelta(lines_all, 24)),
   'Last Week':  getDataFromLines(filterLinesBasedOnTimeDelta(lines_all, 24*7)),
}

# Get longest string from results for nicer printing (align lines)
formatting = {
   'time': len(max(stats.keys())),
   'connections': len(str(max(map(lambda x: stats[x]['connections'], stats)))),
   'upload': len(str(round(max(map(lambda x: stats[x]['upload_gb'], stats)), 4))),
   'download': len(str(round(max(map(lambda x: stats[x]['download_gb'], stats)), 4)))
}

# Print all the results
for time in stats:
   stat = stats[time]
   print(f"[{time:<{formatting['time']}}] " +
         f"Served {stat['connections']:>{formatting['connections']}} People with " +
         f"↑ {round(stat['upload_gb'],4):>{formatting['upload']}} GB, " +
         f"↓ {round(stat['download_gb'],4):>{formatting['download']}} GB")

docker-compose.yml

version: "3.8"

# Docker Service Snowflake
# - Starts the latest snowflake proxy (tor) as a docker container
# - Uses the current directory as a log storage
#   Log file name: "docker_snowflake.log"
# 
# Start and run in background:
# docker-compose up -d snowflake-proxy
services:
    snowflake-proxy:
        network_mode: host
        image: thetorproject/snowflake-proxy:latest
        container_name: snowflake-proxy
        volumes:
          - .:/shared:rw
        restart: unless-stopped
        command: ["-verbose", "-log", "/shared/docker_snowflake.log"]

snowflake-proxy | 2024/04/25 08:57:22 open /shared/docker_snowflake.log: permission denied
I am having the permission denied error in the log folder, any ideas?

Hey have you checked your docker configuration and made sure to add the volume (see my docker compose file above, lines 15/16)? and have you checked whether the local folder you are referencing there is writeable for docker?

Thank you, sorry :)

snowflake-proxy | 2024/04/25 08:57:22 open /shared/docker_snowflake.log: permission denied
I am having the permission denied error in the log folder, any ideas?

Hey have you checked your docker configuration and made sure to add the volume (see my docker compose file above, lines 15/16)? and have you checked whether the local folder you are referencing there is writeable for docker?

Thank you, sorry :)

No worries! I hope it works now :)