FEAT(ws): Containerize the Log Monitoring Tool

[vfedotovs]

A Python script (log_monitor.py) will read the ws_main.log file, search for log levels (INFO, WARNING, ERROR, TRACEBACK), and count the occurrences of each. The results will be stored in an output log file (log_summary.log).

import re
from collections import defaultdict

# Define log file paths
input_log_path = "/logs/ws_main.log"
output_log_path = "/logs/log_summary.log"

# Initialize counts
log_counts = defaultdict(int)

# Define log level keywords
log_levels = ["INFO", "WARNING", "ERROR", "TRACEBACK"]

try:
    with open(input_log_path, "r") as log_file:
        for line in log_file:
            for level in log_levels:
                if re.search(fr"\b{level}\b", line):
                    log_counts[level] += 1

    # Write counts to output file
    with open(output_log_path, "w") as summary_file:
        for level in log_levels:
            summary_file.write(f"{level}: {log_counts[level]}\n")

    print("Log summary written to log_summary.log")
except FileNotFoundError:
    print(f"Error: Log file {input_log_path} not found.")

Dockerfile

FROM python:3.9

# Set working directory
WORKDIR /app

# Copy the Python script and logs directory
COPY log_monitor.py /app/
COPY logs /logs  # Assuming logs are stored in a 'logs' directory in the project

# Install any necessary Python packages
RUN pip install --no-cache-dir -r requirements.txt

# Run the script to monitor logs
CMD ["python", "log_monitor.py"]

Docker-cmpose

version: '3.8'
services:
  log-monitor:
    build: .
    volumes:
      - ./logs:/logs  # Bind the logs directory for persistent access
    restart: on-failure

Build and Run the Container

Build the image:

docker build -t log-monitor .

# Run the container:
docker run --rm -v $(pwd)/logs:/logs log-monitor

Automating the Daily Execution

Using Docker Compose with Restart Policies: Configure Docker Compose with a restart: daily policy.
Using Cron with Docker: Alternatively, you can set up a host-based cron job to restart the container daily:

0 0 * * * docker restart log-monitor