Struct StructuredJsonLogger 

pub struct StructuredJsonLogger { /* private fields */ }

Structured JSON logger for durable execution.

Emits one JSON object per line to stdout. Each entry includes execution context from JsonLogContext and optional operation metadata extracted from LogInfo.

Level Filtering

The min_level field controls which messages are emitted. Messages with a level below min_level are silently dropped.

Implementations

impl StructuredJsonLogger

pub fn new(min_level: LogLevel) -> Self

Creates a new StructuredJsonLogger with the given minimum log level.

No execution context is set initially — call set_context to attach request and execution metadata.

pub fn from_env() -> Self

Creates a new StructuredJsonLogger with min_level derived from the AWS_LAMBDA_LOG_LEVEL environment variable.

Valid values (case-insensitive): "DEBUG", "INFO", "WARN", "ERROR". If the variable is not set or contains an invalid value, defaults to LogLevel::Debug (all messages emitted).

pub fn set_context(&mut self, context: JsonLogContext)

Sets the execution context for all subsequent log entries.

Trait Implementations

impl Logger for StructuredJsonLogger

fn debug(&self, message: &str, info: &LogInfo)

Logs a debug message.

fn info(&self, message: &str, info: &LogInfo)

Logs an info message.

fn warn(&self, message: &str, info: &LogInfo)

Logs a warning message.

fn error(&self, message: &str, info: &LogInfo)

Logs an error message.