52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
# python3
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# Copyright 2019 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Abstract types."""
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import threading
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from typing import List
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from benchmarks.harness import machine
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class MachineProducer:
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"""Abstract Machine producer."""
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def get_machines(self, num_machines: int) -> List[machine.Machine]:
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"""Returns the requested number of machines."""
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raise NotImplementedError
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def release_machines(self, machine_list: List[machine.Machine]):
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"""Releases the given set of machines."""
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raise NotImplementedError
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class LocalMachineProducer(MachineProducer):
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"""Produces Local Machines."""
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def __init__(self, limit: int):
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self.limit_sem = threading.Semaphore(value=limit)
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def get_machines(self, num_machines: int) -> List[machine.Machine]:
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"""Returns the request number of MockMachines."""
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self.limit_sem.acquire()
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return [machine.LocalMachine("local") for _ in range(num_machines)]
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def release_machines(self, machine_list: List[machine.MockMachine]):
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"""No-op."""
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if not machine_list:
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raise ValueError("Cannot release an empty list!")
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self.limit_sem.release()
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machine_list.clear()
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