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94 lines
2.8 KiB
94 lines
2.8 KiB
2 months ago
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# License: Apache 2.0. See LICENSE file in root directory.
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# Copyright(c) 2022 Intel Corporation. All Rights Reserved.
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import pyrealdds
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from rspy import log, test
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from time import sleep
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import threading
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from rspy.timer import Timer
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def run_server( server_script, nested_indent = 'svr' ):
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import os.path
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cmd = test.nested_cmd( server_script, cwd = os.path.dirname(os.path.realpath(__file__)), nested_indent = nested_indent )
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import subprocess, time
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log.d( 'running:', cmd )
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start_time = time.time()
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try:
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log.debug_indent()
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rv = subprocess.run( cmd,
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stdout=None,
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stderr=subprocess.STDOUT,
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universal_newlines=True,
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timeout=5,
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check=True )
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result = rv.stdout
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if not result:
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result = []
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else:
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result = result.split( '\n' )
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return result
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finally:
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log.debug_unindent()
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run_time = time.time() - start_time
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log.d( "server took", run_time, "seconds" )
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devices_updated = threading.Event()
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def _device_change_callback( info ):
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"""
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Called when librealsense detects a device change
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"""
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global devices_updated
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devices_updated.set()
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def wait_for_devices( context, mask, n=1, timeout=3, throw=None ):
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"""
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Since DDS devices may take time to be recognized and then initialized, we try over time:
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:param n:
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If a float ('2.') then an exact match is expected (3 devices will not fit 2.) and throw
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is on by default; otherwise, the minimum number of devices acceptable (throw is off)
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"""
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if 'gha' in test.context:
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timeout *= 3 # GHA VMs have only 2 cores
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exact = isinstance( n, float )
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if exact:
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n = int(n)
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if throw is None:
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throw = True
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#
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timer = Timer( timeout )
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devices = context.query_devices( mask )
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if len(devices) >= n:
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if not exact or len(devices) == n:
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return devices
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#
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context.set_devices_changed_callback( _device_change_callback )
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global devices_updated
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#
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while not timer.has_expired():
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#
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log.d( f'{len(devices)} device(s) detected; waiting...' )
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devices_updated.clear()
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if not devices_updated.wait( timer.time_left() ):
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break
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#
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devices = context.query_devices( mask )
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if len(devices) >= n:
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if not exact:
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return devices
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if len(devices) == n:
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if n == 1:
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return devices[0]
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return devices
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if throw:
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raise TimeoutError( f'timeout waiting for {n} device(s)' )
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log.d( f'timeout waiting for {n} device(s)' )
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if exact and n == 1:
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if devices:
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return device[0]
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return None
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return devices
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