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import logging, os, signal, sys, threading
from prometheus_client import start_http_server
from compute.Config import GRPC_SERVICE_PORT, GRPC_MAX_WORKERS, GRPC_GRACE_PERIOD, LOG_LEVEL, METRICS_PORT
from compute.service.ComputeService import ComputeService
terminate = threading.Event()
logger = None
def signal_handler(signal, frame):
global terminate, logger
logger.warning('Terminate signal received')
terminate.set()
def main():
global terminate, logger
grpc_service_port = os.environ.get('COMPUTESERVICE_SERVICE_PORT_GRPC', GRPC_SERVICE_PORT )
max_workers = os.environ.get('MAX_WORKERS', GRPC_MAX_WORKERS )
grace_period = os.environ.get('GRACE_PERIOD', GRPC_GRACE_PERIOD )
log_level = os.environ.get('LOG_LEVEL', LOG_LEVEL )
metrics_port = os.environ.get('METRICS_PORT', METRICS_PORT )
logging.basicConfig(level=log_level)
logger = logging.getLogger(__name__)
signal.signal(signal.SIGINT, signal_handler)
signal.signal(signal.SIGTERM, signal_handler)
logger.info('Starting...')
# Start metrics server
start_http_server(metrics_port)
# Starting compute service
grpc_service = ComputeService(port=grpc_service_port, max_workers=max_workers, grace_period=grace_period)
grpc_service.start()
# Wait for Ctrl+C or termination signal
while not terminate.wait(timeout=0.1): pass
logger.info('Terminating...')
grpc_service.stop()
logger.info('Bye')
return 0
if __name__ == '__main__':
sys.exit(main())