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progress.py
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progress.py
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# Copyright 2021 The Cirq Developers
#
# 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
#
# https://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.
"""Progress and logging facilities for the quantum runtime."""
import abc
from typing import TYPE_CHECKING
if TYPE_CHECKING:
import cirq_google as cg
class _WorkflowLogger(abc.ABC):
"""Implementers of this class can provide logging and progress information
for execution loops."""
def initialize(self):
"""Initialization logic at the start of an execution loop."""
def consume_result(
self, exe_result: 'cg.ExecutableResult', shared_rt_info: 'cg.SharedRuntimeInfo'
):
"""Consume executable results as they are completed.
Args:
exe_result: The completed `cg.ExecutableResult`.
shared_rt_info: A reference to the `cg.SharedRuntimeInfo` for this
execution at this point.
"""
def finalize(self):
"""Finalization logic at the end of an execution loop."""
class _PrintLogger(_WorkflowLogger):
def __init__(self, n_total: int):
self.n_total = n_total
self.i = 0
def initialize(self):
"""Write a newline at the start of an execution loop."""
print()
def consume_result(
self, exe_result: 'cg.ExecutableResult', shared_rt_info: 'cg.SharedRuntimeInfo'
):
"""Print a simple count of completed executables."""
print(f'\r{self.i + 1} / {self.n_total}', end='', flush=True)
self.i += 1
def finalize(self):
"""Write a newline at the end of an execution loop."""
print()