simple_grpc_keepalive_client.py

#!/usr/bin/env python
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import argparse
import numpy as np
import sys

import tritonclient.grpc as grpcclient

if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument('-v',
                        '--verbose',
                        action="store_true",
                        required=False,
                        default=False,
                        help='Enable verbose output')
    parser.add_argument('-u',
                        '--url',
                        type=str,
                        required=False,
                        default='localhost:8001',
                        help='Inference server URL. Default is localhost:8001.')
    # GRPC KeepAlive: https://github.com/grpc/grpc/blob/master/doc/keepalive.md
    parser.add_argument(
        '--grpc-keepalive-time',
        type=int,
        required=False,
        default=2**31 - 1,
        help=
        'The period (in milliseconds) after which a keepalive ping is sent on '
        'the transport. Default is 2**31-1 (INT_MAX: disabled).')
    parser.add_argument(
        '--grpc-keepalive-timeout',
        type=int,
        required=False,
        default=20000,
        help=
        'The period (in milliseconds) the sender of the keepalive ping waits '
        'for an acknowledgement. If it does not receive an acknowledgment '
        'within this time, it will close the connection. '
        'Default is 20000 (20 seconds).')
    parser.add_argument(
        '--grpc-keepalive-permit-without-calls',
        action="store_true",
        required=False,
        default=False,
        help='Allows keepalive pings to be sent even if there are no calls in '
        'flight. Default is False.')
    parser.add_argument(
        '--grpc-http2-max-pings-without-data',
        type=int,
        required=False,
        default=2,
        help='The maximum number of pings that can be sent when there is no '
        'data/header frame to be sent. gRPC Core will not continue sending '
        'pings if we run over the limit. Setting it to 0 allows sending pings '
        'without such a restriction. Default is 2.')

    FLAGS = parser.parse_args()
    try:
        keepalive_options = grpcclient.KeepAliveOptions(
            keepalive_time_ms=FLAGS.grpc_keepalive_time,
            keepalive_timeout_ms=FLAGS.grpc_keepalive_timeout,
            keepalive_permit_without_calls=FLAGS.
            grpc_keepalive_permit_without_calls,
            http2_max_pings_without_data=FLAGS.grpc_http2_max_pings_without_data
        )
        triton_client = grpcclient.InferenceServerClient(
            url=FLAGS.url,
            verbose=FLAGS.verbose,
            keepalive_options=keepalive_options)
    except Exception as e:
        print("channel creation failed: " + str(e))
        sys.exit()

    model_name = "simple"

    # Infer
    inputs = []
    outputs = []
    inputs.append(grpcclient.InferInput('INPUT0', [1, 16], "INT32"))
    inputs.append(grpcclient.InferInput('INPUT1', [1, 16], "INT32"))

    # Create the data for the two input tensors. Initialize the first
    # to unique integers and the second to all ones.
    input0_data = np.arange(start=0, stop=16, dtype=np.int32)
    input0_data = np.expand_dims(input0_data, axis=0)
    input1_data = np.ones(shape=(1, 16), dtype=np.int32)

    # Initialize the data
    inputs[0].set_data_from_numpy(input0_data)
    inputs[1].set_data_from_numpy(input1_data)

    outputs.append(grpcclient.InferRequestedOutput('OUTPUT0'))
    outputs.append(grpcclient.InferRequestedOutput('OUTPUT1'))

    # Test with outputs
    results = triton_client.infer(model_name=model_name,
                                  inputs=inputs,
                                  outputs=outputs,
                                  headers={'test': '1'})

    # Get the output arrays from the results
    output0_data = results.as_numpy('OUTPUT0')
    output1_data = results.as_numpy('OUTPUT1')

    for i in range(16):
        print(
            str(input0_data[0][i]) + " + " + str(input1_data[0][i]) + " = " +
            str(output0_data[0][i]))
        print(
            str(input0_data[0][i]) + " - " + str(input1_data[0][i]) + " = " +
            str(output1_data[0][i]))
        if (input0_data[0][i] + input1_data[0][i]) != output0_data[0][i]:
            print("sync infer error: incorrect sum")
            sys.exit(1)
        if (input0_data[0][i] - input1_data[0][i]) != output1_data[0][i]:
            print("sync infer error: incorrect difference")
            sys.exit(1)

    print('PASS: KeepAlive')