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# Copyright (c) OpenMMLab. All rights reserved.
from ...dist_utils import master_only
from ..hook import HOOKS
from .base import LoggerHook
@HOOKS.register_module()
class NeptuneLoggerHook(LoggerHook):
"""Class to log metrics to NeptuneAI.
It requires `neptune-client` to be installed.
Args:
init_kwargs (dict): a dict contains the initialization keys as below:
- project (str): Name of a project in a form of
namespace/project_name. If None, the value of
NEPTUNE_PROJECT environment variable will be taken.
- api_token (str): User’s API token.
If None, the value of NEPTUNE_API_TOKEN environment
variable will be taken. Note: It is strongly recommended
to use NEPTUNE_API_TOKEN environment variable rather than
placing your API token in plain text in your source code.
- name (str, optional, default is 'Untitled'): Editable name of
the run. Name is displayed in the run's Details and in
Runs table as a column.
Check https://docs.neptune.ai/api-reference/neptune#init for
more init arguments.
interval (int): Logging interval (every k iterations).
ignore_last (bool): Ignore the log of last iterations in each epoch
if less than `interval`.
reset_flag (bool): Whether to clear the output buffer after logging
by_epoch (bool): Whether EpochBasedRunner is used.
.. _NeptuneAI:
https://docs.neptune.ai/you-should-know/logging-metadata
"""
def __init__(self,
init_kwargs=None,
interval=10,
ignore_last=True,
reset_flag=True,
with_step=True,
by_epoch=True):
super(NeptuneLoggerHook, self).__init__(interval, ignore_last,
reset_flag, by_epoch)
self.import_neptune()
self.init_kwargs = init_kwargs
self.with_step = with_step
def import_neptune(self):
try:
import neptune.new as neptune
except ImportError:
raise ImportError(
'Please run "pip install neptune-client" to install neptune')
self.neptune = neptune
self.run = None
@master_only
def before_run(self, runner):
if self.init_kwargs:
self.run = self.neptune.init(**self.init_kwargs)
else:
self.run = self.neptune.init()
@master_only
def log(self, runner):
tags = self.get_loggable_tags(runner)
if tags:
for tag_name, tag_value in tags.items():
if self.with_step:
self.run[tag_name].log(
tag_value, step=self.get_iter(runner))
else:
tags['global_step'] = self.get_iter(runner)
self.run[tag_name].log(tags)
@master_only
def after_run(self, runner):
self.run.stop()
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