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Sleeping
File size: 2,277 Bytes
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import subprocess
import os
import socket
import time
PORT=22013
HOST='paffenroth-23.dyn.wpi.edu'
def deploy():
print(f'Deploying the app...')
try:
# Run the setup.sh script
result = subprocess.run(
['./setup.sh'], # Command to execute
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
check=True # Raise an exception for non-zero exit codes
)
print(result.stdout.decode()) # Print standard output from the script
except subprocess.CalledProcessError as e:
print(f"Error occurred while deploying: {e.stderr.decode()}")
def is_port_busy(host, port):
"""Check if the specified port on the host is busy."""
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
sock.settimeout(1) # 1 second timeout
return sock.connect_ex((host, port)) == 0 # Returns True if port is busy
def checkStatus(HOST, PORT):
print(f'Checking the status of the app...')
try:
# Run the netcat (nc) command to check if the port is open
result = subprocess.run(
['nc', '-vz', HOST, str(PORT)],
stdout=subprocess.PIPE, stderr=subprocess.PIPE
)
# If the return code is 0, the connection was successful
if result.returncode == 0:
print(f"Connection to {HOST}:{PORT} successful.")
return True
else:
print(f"Connection to {HOST}:{PORT} refused.")
return False
except Exception as e:
print(f"Error occurred: {e}")
return False
def monitorStatus(HOST, PORT, checkInterval=5): # for 5 seconds will wait if the port is not available
print(f'Monitoring the status of the app...')
status=False
while True:
if checkStatus(HOST, PORT):
# If the connection is successful, run deploy and exit the loop
if not status:
print('Deploying the app...')
deploy()
status=True
else:
# If connection is refused, wait and retry
print(f"Waiting for the server {HOST}:{PORT} to become available...")
time.sleep(checkInterval)
status = False
# checkStatus(HOST, PORT)
monitorStatus(HOST, PORT) |