103 lines
3.4 KiB
Python
Executable File
103 lines
3.4 KiB
Python
Executable File
'''
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__ __ _
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| \/ | __ _ ___| |_ ___ _ __
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| |\/| |/ _` / __| __/ _ \ '__|
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| | | | (_| \__ \ || __/ |
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|_| |_|\__,_|___/\__\___|_|
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Master Python script that will trigger other scripts at every chosen time pace
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This script is triggered as a systemd service used as an alternative to cronjobs
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Attention:
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to do -> prevent SARA R4 Script to run again if it's taking more than 60 secs to finish (using a lock file ??)
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First time: need to create the service file
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-->
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sudo nano /etc/systemd/system/master_nebuleair.service
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<--
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⬇️
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[Unit]
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Description=Master manager for the Python loop scripts
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After=network.target
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[Service]
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ExecStart=/usr/bin/python3 /var/www/moduleair_pro_4g/master.py
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Restart=always
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User=root
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WorkingDirectory=/var/www/moduleair_pro_4g
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StandardOutput=append:/var/www/moduleair_pro_4g/logs/master.log
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StandardError=append:/var/www/moduleair_pro_4g/logs/master_errors.log
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[Install]
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WantedBy=multi-user.target
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⬆️
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Reload systemd (first time after creating the service):
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sudo systemctl daemon-reload
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Enable (once), start (once and after stopping) and restart (after modification)systemd:
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sudo systemctl enable master_nebuleair.service
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sudo systemctl start master_nebuleair.service
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sudo systemctl restart master_nebuleair.service
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Check the service status:
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sudo systemctl status master_nebuleair.service
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Specific scripts can be disabled with config.json
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Exemple: stop gathering data from NPM
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Exemple: stop sending data with SARA R4
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'''
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import time
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import threading
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import subprocess
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import json
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import os
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# Base directory where scripts are stored
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SCRIPT_DIR = "/var/www/moduleair_pro_4g/"
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CONFIG_FILE = "/var/www/moduleair_pro_4g/config.json"
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def load_config():
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"""Load the configuration file to determine which scripts to run."""
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with open(CONFIG_FILE, "r") as f:
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return json.load(f)
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def run_script(script_name, interval, delay=0):
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"""Run a script in a synchronized loop with an optional start delay."""
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script_path = os.path.join(SCRIPT_DIR, script_name) # Build full path
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next_run = time.monotonic() + delay # Apply the initial delay
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while True:
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config = load_config()
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if config.get(script_name, True): # Default to True if not found
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subprocess.run(["python3", script_path])
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# Wait until the next exact interval
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next_run += interval
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sleep_time = max(0, next_run - time.monotonic()) # Prevent negative sleep times
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time.sleep(sleep_time)
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# Define scripts and their execution intervals (seconds)
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SCRIPTS = [
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("RTC/save_to_db.py", 1, 0), # SAVE RTC time every 1 second, no delay
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("NPM/get_data_modbus_v3.py", 10, 0), # Get NPM data (modbus 5 channels) every 10s,
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("envea/read_value_v2.py", 10, 0), # Get Envea data every 10s,
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("MH-Z19/write_data.py", 10, 0), # Get CO2 values every 10s,
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("loop/SARA_send_data_v2.py", 60, 1), # Send data every 60 seconds, with 2s delay
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("BME280/get_data_v2.py", 120, 0), # Get BME280 data every 120 seconds, no delay
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("sqlite/flush_old_data.py", 86400, 0) # flush old data inside db every day ()
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]
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# Start threads for enabled scripts
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for script_name, interval, delay in SCRIPTS:
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thread = threading.Thread(target=run_script, args=(script_name, interval, delay), daemon=True)
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thread.start()
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# Keep the main script running
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while True:
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time.sleep(1)
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