Namespace AWS.Lambda.Powertools.Logging

Supported Event types from which Correlation ID can be extracted

Configuration options for log buffering

Powertools Log Entry

Powertools Log Entry Lambda Context

Exception thrown when LogFormatter returns invalid object or error:

Class Logger.

Provides a Lambda optimized logger with output structured as JSON.

Key features
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Capture key fields from Lambda context and cold start
Log Lambda event when instructed (disabled by default)
Log sampling enables DEBUG log level for a percentage of requests (disabled by default)
Append additional keys to structured log at any point in time

Environment variables
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Variable name	Description
POWERTOOLS_SERVICE_NAME	string, service name
POWERTOOLS_LOG_LEVEL	string, logging level (e.g. Information, Debug, and Trace)
POWERTOOLS_LOGGER_CASE	string, logger output case (e.g. CamelCase, PascalCase, and SnakeCase)
POWERTOOLS_LOGGER_SAMPLE_RATE	double, sampling rate ranging from 0 to 1, 1 being 100% sampling

Parameters
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Parameter name	Description
Service	string, service name to be appended in logs, by default "service_undefined"
LogLevel	enum, logging level (e.g. Information, Debug, and Trace), by default Information
LoggerOutputCase	enum, logger output case (e.g. CamelCase, PascalCase, and SnakeCase)
SamplingRate	double, sample rate for debug calls within execution context defaults to 0.0
CorrelationIdPath	string, pointer path to extract correlation id from input parameter
ClearState	bool, clear all custom keys on each request, by default false