72 lines
3.1 KiB
Python
72 lines
3.1 KiB
Python
"""Generator functions for all parameters that we fuzz when invoked with --fuzzMongodConfigs."""
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import random
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from buildscripts.resmokelib import utils
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def generate_eviction_configs(rng):
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"""Generate random configurations for wiredTigerEngineConfigString parameter."""
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eviction_checkpoint_target = rng.randint(1, 99)
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eviction_target = rng.randint(50, 95)
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eviction_trigger = rng.randint(eviction_target + 1, 99)
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eviction_dirty_target = rng.randint(5, 50)
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eviction_dirty_trigger = rng.randint(eviction_dirty_target, 75)
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close_idle_time_secs = rng.randint(1, 100)
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close_handle_minimum = rng.randint(0, 1000)
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close_scan_interval = rng.randint(1, 100)
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return "eviction_checkpoint_target={0},eviction_dirty_target={1},eviction_dirty_trigger={2},"\
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"eviction_target={3},eviction_trigger={4},file_manager=(close_handle_minimum={5},"\
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"close_idle_time={6},close_scan_interval={7})".format(eviction_checkpoint_target,
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eviction_dirty_target,
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eviction_dirty_trigger,
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eviction_target,
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eviction_trigger,
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close_handle_minimum,
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close_idle_time_secs,
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close_scan_interval)
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def generate_flow_control_parameters(rng):
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"""Generate parameters related to flow control and returns a dictionary."""
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configs = {}
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configs["enableFlowControl"] = rng.choice([True, False])
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if not configs["enableFlowControl"]:
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return configs
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configs["flowControlTargetLagSeconds"] = rng.randint(1, 1000)
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configs["flowControlThresholdLagPercentage"] = rng.random()
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configs["flowControlMaxSamples"] = rng.randint(1, 1000 * 1000)
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configs["flowControlSamplePeriod"] = rng.randint(1, 1000 * 1000)
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configs["flowControlMinTicketsPerSecond"] = rng.randint(1, 10 * 1000)
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return configs
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def generate_independent_parameters(rng):
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"""Return a dictionary with values for each independent parameter."""
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ret = {}
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ret["wiredTigerCursorCacheSize"] = rng.randint(-100, 100)
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ret["wiredTigerSessionCloseIdleTimeSecs"] = rng.randint(0, 300)
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ret["wiredTigerConcurrentWriteTransactions"] = rng.randint(16, 256)
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ret["wiredTigerConcurrentReadTransactions"] = rng.randint(16, 256)
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return ret
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def fuzz_set_parameters(seed, user_provided_params):
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"""Randomly generate mongod configurations and wiredTigerConnectionString."""
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rng = random.Random(seed)
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ret = {}
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params = [generate_flow_control_parameters(rng), generate_independent_parameters(rng)]
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for dct in params:
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for key, value in dct.items():
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ret[key] = value
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for key, value in utils.load_yaml(user_provided_params).items():
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ret[key] = value
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return utils.dump_yaml(ret), generate_eviction_configs(rng)
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