1 files changed, 51 insertions, 0 deletions
diff --git a/benchmarks/harness/machine_producers/machine_producer.py b/benchmarks/harness/machine_producers/machine_producer.py
new file mode 100644
index 000000000..f5591c026
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+++ b/benchmarks/harness/machine_producers/machine_producer.py
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+# python3
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Abstract types."""
+
+import threading
+from typing import List
+
+from benchmarks.harness import machine
+
+
+class MachineProducer:
+  """Abstract Machine producer."""
+
+  def get_machines(self, num_machines: int) -> List[machine.Machine]:
+    """Returns the requested number of machines."""
+    raise NotImplementedError
+
+  def release_machines(self, machine_list: List[machine.Machine]):
+    """Releases the given set of machines."""
+    raise NotImplementedError
+
+
+class LocalMachineProducer(MachineProducer):
+  """Produces Local Machines."""
+
+  def __init__(self, limit: int):
+    self.limit_sem = threading.Semaphore(value=limit)
+
+  def get_machines(self, num_machines: int) -> List[machine.Machine]:
+    """Returns the request number of MockMachines."""
+
+    self.limit_sem.acquire()
+    return [machine.LocalMachine("local") for _ in range(num_machines)]
+
+  def release_machines(self, machine_list: List[machine.MockMachine]):
+    """No-op."""
+    if not machine_list:
+      raise ValueError("Cannot release an empty list!")
+    self.limit_sem.release()
+    machine_list.clear()