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Lazy load samplers to speed up coldstart in a Lambda environment #312

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Merged
merged 1 commit into from
Aug 25, 2021
Merged

Lazy load samplers to speed up coldstart in a Lambda environment #312

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4 changes: 2 additions & 2 deletions aws_xray_sdk/core/recorder.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,8 +12,6 @@
from .models.default_dynamic_naming import DefaultDynamicNaming
from .models.dummy_entities import DummySegment, DummySubsegment
from .emitters.udp_emitter import UDPEmitter
from .sampling.sampler import DefaultSampler
from .sampling.local.sampler import LocalSampler
from .streaming.default_streaming import DefaultStreaming
from .context import Context
from .daemon_config import DaemonConfig
Expand Down Expand Up @@ -58,10 +56,12 @@ def __init__(self):
context = check_in_lambda()
if context:
# Special handling when running on AWS Lambda.
from .sampling.local.sampler import LocalSampler
self._context = context
self.streaming_threshold = 0
self._sampler = LocalSampler()
else:
from .sampling.sampler import DefaultSampler
self._context = Context()
self._sampler = DefaultSampler()

Expand Down