mirror of
https://github.com/chanzuckerberg/cellxgene.git
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ac13b31e13
* Collect all env vars in one, easy-to-find place Past state: * Default environement variables were stored in both client/package.json and client/__tests__/e2e/config.js * Constants that should have been linked--like the cellxgene server port during testing--were repeated. With this commit: * All environment variables are parameterized * All environment variables are packaged in default env files * Move npm scripts to client Makefile * Respond to feedback from @seve and @bkmartinjr
59 lines
1.9 KiB
Python
Executable File
59 lines
1.9 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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import errno
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import socket
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import sys
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import time
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# await_port
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#
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# Functionality:
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# 1. Wait for a process to be listening on a port - await_port will poll the address with a bind request and close it
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# until another process takes the address.
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# 2. Wait for a port to be free - await_port will poll the address with a bind request and close it until the port is
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# free.
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parser = argparse.ArgumentParser(description='Wait for a port either to be bound to or to be free.')
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parser.add_argument('port', type=int, help='port to wait for')
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parser.add_argument('--sleep-increment', type=int, default=2.0, help='sleep duration in between checks of the port')
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parser.add_argument('--timeout', type=int, default=20.0, help='How long should we wait before timing out?')
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parser.add_argument('--await-free', default=False, action='store_true',
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help='Wait for the port to be active or free?')
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args = parser.parse_args()
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start = time.time()
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port_in_use = None
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desired_state = 'free' if args.await_free else 'in use'
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def condition_reached(port_in_use):
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return not port_in_use if args.await_free else port_in_use
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while True:
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# halt if we've reached the timeout
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elapsed = time.time() - start
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if elapsed > args.timeout:
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print(f"Timed out while waiting for port {args.port}")
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sys.exit(1)
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with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
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try:
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s.bind(('localhost', args.port))
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port_in_use = False
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except socket.error as e:
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if e.errno != errno.EADDRINUSE:
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raise e
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port_in_use = True
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if condition_reached(port_in_use):
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break
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print(f"Waiting for port {args.port} to be {desired_state}... sleeping for {args.sleep_increment} seconds.")
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time.sleep(args.sleep_increment)
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print(f"Port {args.port} is {desired_state}!")
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