smooai-logger 4.5.0

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About smooai-logger (Python)

The missing piece for AWS & Browser logging - A contextual logging system that automatically captures the full execution context you need to debug production issues, without the manual setup.

Python Package

This is the Python port of @smooai/logger, mirroring the TypeScript API for backend services. It provides the same contextual logging capabilities with automatic AWS context capture and correlation tracking.

Why smooai-logger?

Ever spent hours debugging an AWS service in production, only to realize you're missing critical context? Traditional loggers give you the message, but not the story.

smooai-logger automatically captures:

For AWS Services:

• 📍 Exact code location - File, line number, and call stack for every log
• 🔗 Request journey - Correlation IDs that follow requests across services
• ⚡ AWS context - Service-specific metadata and execution details
• 🌐 HTTP details - Headers, methods, status codes from API Gateway
• 📬 Message context - SQS attributes, EventBridge events, SNS messages
• 🔧 Service integration - Lambda, ECS, Fargate, EC2, and more

Install

pip install smooai-logger

or with uv:

uv add smooai-logger

The Power of Automatic Context

See Where Your Logs Come From

Every log entry includes the exact location in your code:

from smooai_logger import AwsServerLogger

logger = AwsServerLogger()
logger.info("User created")

# Output includes:
{
  "callerContext": {
    "stack": [
      "at UserService.create_user (/src/services/user_service.py:42:16)",
      "at process_request (/src/handlers/user_handler.py:15:23)",
      "at handler (/src/index.py:8:10)"
    ]
  }
}

No more guessing which function logged what - the full execution path is right there.

Track Requests Across Services

Correlation IDs automatically flow through your entire system:

# Service A: API Gateway Handler
logger.add_lambda_context(event, context)
logger.info("Request received")  # Correlation ID: abc-123

# Service B: SQS Processor (automatically extracts ID)
logger.add_sqs_record_context(record)
logger.info("Processing message")  # Same Correlation ID: abc-123

# Service C: Another Lambda (receives via HTTP header)
logger.info("Completing workflow")  # Still Correlation ID: abc-123

Production-Ready Examples

AWS Lambda with API Gateway

from smooai_logger import AwsServerLogger, Level

logger = AwsServerLogger(name="UserAPI")

def handler(event, context):
    logger.add_lambda_context(event, context)

    try:
        user = create_user(event["body"])
        logger.info("User created successfully", {"userId": user.id})
        return {"statusCode": 201, "body": json.dumps(user)}
    except Exception as error:
        logger.error("Failed to create user", error, {
            "body": event["body"],
            "headers": event["headers"],
        })
        raise error

AWS ECS/Fargate Services

import os
from smooai_logger import AwsServerLogger, Level

logger = AwsServerLogger(
    name="OrderService",
    level=Level.INFO,
)

# Automatically captures container metadata
@app.post('/orders')
async def create_order(request):
    logger.add_context({
        "taskArn": os.environ.get("ECS_TASK_ARN"),
        "containerName": os.environ.get("ECS_CONTAINER_NAME"),
    })

    logger.info("Processing order", {
        "orderId": request.json["orderId"],
        "amount": request.json["amount"],
    })

SQS Message Processing

def sqs_handler(event):
    for record in event["Records"]:
        logger.add_sqs_record_context(record)
        logger.info("Processing order", {
            "messageId": record["messageId"],
            "attempt": record["attributes"]["ApproximateReceiveCount"],
        })

        # Logger maintains context throughout async operations
        process_order(record["body"])

Advanced Features

Smart Error Handling

Errors are automatically serialized with full context:

try:
    risky_operation()
except Exception as error:
    logger.error("Operation failed", error, {"context": "additional-info"})
    # Includes: error message, stack trace, error type, and your context

Flexible Context Management

# Add user context that persists across logs
logger.add_user_context({"id": "user-123", "role": "admin"})

# Add telemetry for performance tracking
logger.add_telemetry_fields({"duration": 150, "operation": "db-query"})

# Add custom context for specific logs
logger.info("Payment processed", {
    "amount": 99.99,
    "currency": "USD",
})

Local Development Features

Pretty Printing

logger = AwsServerLogger(
    pretty_print=True  # Readable console output for development
)

Automatic Log Rotation

Logs are automatically saved to disk in development with smart rotation:

# Auto-enabled in local environments
# Saves to .smooai-logs/ with ANSI colors for easy reading
logger = AwsServerLogger(
    rotation={
        "size": "10M",        # Rotate at 10MB
        "interval": "1d",     # Daily rotation
        "compress": True,     # Gzip old logs
    }
)

Configuration

Log Levels

• TRACE - Detailed debugging information
• DEBUG - Diagnostic information
• INFO - General operational information
• WARN - Warning conditions
• ERROR - Error conditions
• FATAL - Critical failures

Context Presets

• MINIMAL - Essential context only
• FULL - All available context (default)

Built With

• Python 3.8+ - Full type hints support
• AWS SDK Integration - Native support for Lambda, ECS, EC2, and more
• Automatic environment detection
• Smart log rotation

Related Packages

• @smooai/logger - TypeScript/JavaScript version
• smooai-logger (Rust) - Rust version

Development

uv run poe install-dev
uv run pytest
uv run poe lint
uv run poe lint:fix   # optional fixer
uv run poe format
uv run poe typecheck
uv run poe build

Set UV_PUBLISH_TOKEN before running uv run poe publish to upload to PyPI.

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Contact

Brent Rager

• Email
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• BlueSky
• TikTok
• Instagram

Smoo Github: https://github.com/SmooAI

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License

MIT © SmooAI