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140
concordia/contrib/components/agent/observations_since_last_update.py
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# Copyright 2024 DeepMind Technologies Limited. | ||
# | ||
# 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. | ||
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"""A component for tracking observations since the last update. | ||
""" | ||
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from collections.abc import Callable | ||
import datetime | ||
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from absl import logging as absl_logging | ||
from concordia.components import agent as agent_components | ||
from concordia.components.agent import action_spec_ignored | ||
from concordia.components.agent import memory_component | ||
from concordia.language_model import language_model | ||
from concordia.memory_bank import legacy_associative_memory | ||
from concordia.typing import entity_component | ||
from concordia.typing import logging | ||
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def _get_earliest_timepoint( | ||
memory_component_: agent_components.memory_component.MemoryComponent, | ||
) -> datetime.datetime: | ||
"""Returns all memories in the memory bank. | ||
Args: | ||
memory_component_: The memory component to retrieve memories from. | ||
""" | ||
memories_data_frame = memory_component_.get_raw_memory() | ||
if not memories_data_frame.empty: | ||
sorted_memories_data_frame = memories_data_frame.sort_values( | ||
'time', ascending=True) | ||
return sorted_memories_data_frame['time'][0] | ||
else: | ||
absl_logging.warning('No memories found in memory bank.') | ||
return datetime.datetime.now() | ||
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class ObservationsSinceLastUpdate(action_spec_ignored.ActionSpecIgnored): | ||
"""Report all observations since the last update.""" | ||
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def __init__( | ||
self, | ||
model: language_model.LanguageModel, | ||
clock_now: Callable[[], datetime.datetime], | ||
memory_component_name: str = ( | ||
memory_component.DEFAULT_MEMORY_COMPONENT_NAME | ||
), | ||
pre_act_key: str = '\nObservations', | ||
logging_channel: logging.LoggingChannel = logging.NoOpLoggingChannel, | ||
): | ||
"""Initialize a component to consider the latest observations. | ||
Args: | ||
model: The language model to use. | ||
clock_now: Function that returns the current time. | ||
memory_component_name: The name of the memory component from which to | ||
retrieve related memories. | ||
pre_act_key: Prefix to add to the output of the component when called | ||
in `pre_act`. | ||
logging_channel: The channel to log debug information to. | ||
""" | ||
super().__init__(pre_act_key) | ||
self._model = model | ||
self._clock_now = clock_now | ||
self._memory_component_name = memory_component_name | ||
self._logging_channel = logging_channel | ||
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self._previous_time = None | ||
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def pre_observe( | ||
self, | ||
observation: str, | ||
) -> str: | ||
memory = self.get_entity().get_component( | ||
self._memory_component_name, | ||
type_=memory_component.MemoryComponent) | ||
memory.add( | ||
f'[observation] {observation}', | ||
metadata={'tags': ['observation']}, | ||
) | ||
return '' | ||
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def _make_pre_act_value(self) -> str: | ||
"""Returns a representation of the current situation to pre act.""" | ||
current_time = self._clock_now() | ||
memory = self.get_entity().get_component( | ||
self._memory_component_name, | ||
type_=memory_component.MemoryComponent) | ||
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if self._previous_time is None: | ||
self._previous_time = _get_earliest_timepoint(memory) | ||
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interval_scorer = legacy_associative_memory.RetrieveTimeInterval( | ||
time_from=self._previous_time, | ||
time_until=current_time, | ||
add_time=True, | ||
) | ||
mems = [mem.text for mem in memory.retrieve(scoring_fn=interval_scorer)] | ||
result = '\n'.join(mems) + '\n' | ||
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self._logging_channel({ | ||
'Key': self.get_pre_act_key(), | ||
'Value': result, | ||
}) | ||
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self._previous_time = current_time | ||
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return result | ||
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def get_state(self) -> entity_component.ComponentState: | ||
"""Converts the component to JSON data.""" | ||
with self._lock: | ||
if self._previous_time is None: | ||
previous_time = '' | ||
else: | ||
previous_time = self._previous_time.strftime('%Y-%m-%d %H:%M:%S') | ||
return { | ||
'previous_time': previous_time, | ||
} | ||
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def set_state(self, state: entity_component.ComponentState) -> None: | ||
"""Sets the component state from JSON data.""" | ||
with self._lock: | ||
if state['previous_time']: | ||
previous_time = datetime.datetime.strptime( | ||
state['previous_time'], '%Y-%m-%d %H:%M:%S') | ||
else: | ||
previous_time = None | ||
self._previous_time = previous_time |
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