auditX 0.1.3

ERP-grade audit logging for trading and service businesses

auditX

ERP-grade audit logging for trading and service businesses. Track who did what, when, and where — with structured JSON trails suitable for compliance, SIEM, and multi-branch operations.

Install

pip install auditX

From source (development):

git clone https://github.com/Script-By-Lin/auditX.git
cd auditX
pip install -e .

---

Quick Start

Initialize context and write structured logs in standard Python code.

from auditx import audit, RequestContext, BusinessModule, AuditAction

# 1. Set user/tenant context once per request or job
RequestContext.set(
    user="admin",
    user_role="manager",
    company_id="CO-001",
    branch_id="BR-YGN",
    ip="192.168.1.10",
)

# 2. Log security / auth events
audit.log_security("User login successful", action=AuditAction.LOGIN, user="admin")

# 3. Log trading transactions
audit.log_transaction(
    "Sales invoice posted",
    module=BusinessModule.SALES,
    action=AuditAction.POST,
    reference_no="SI-2026-0042",
    amount=1_250_000,
    entity_type="sales_invoice",
    entity_id="inv-42",
    party="Golden Trading Co.",
)

# 4. Log inventory movements
audit.log_inventory(
    "Stock issued for sales order",
    action=AuditAction.TRANSFER,
    product_id="SKU-1001",
    product_name="LED Panel 24W",
    quantity=50,
    warehouse_id="WH-MAIN",
    reference_no="SI-2026-0042",
)

# 5. Log service department jobs
audit.log_service(
    "Service job completed",
    action=AuditAction.UPDATE,
    job_id="SVC-889",
    customer_id="CUST-220",
    technician="U Kyaw",
    service_type="AC Maintenance",
    status_label="completed",
    amount=85_000,
)

# 6. Log field-level schema changes (before/after)
audit.log_change(
    "Customer credit limit updated",
    module=BusinessModule.CRM,
    action=AuditAction.UPDATE,
    entity_type="customer",
    entity_id="CUST-220",
    old_values={"credit_limit": 500_000},
    new_values={"credit_limit": 1_000_000},
)

---

Run the Demo

To see auditX in action immediately:

python -m auditx
# or if installed as a package:
auditx-demo

---

Configuration & Output

Configure auditX once at application startup. By default, it writes to a logs/ directory in the current working directory.

from auditx import configure, create_logger

# Reconfigure the global singleton
configure(
    log_dir="/var/log/my-erp", 
    console=True, 
    max_file_bytes=10*1024*1024, # 10 MB (defaults to 10MB)
    backup_count=5               # Keep up to 5 rotated logs
)

# Or instantiate a standalone logger for a specific microservice/tenant
tenant_logger = create_logger(log_dir="logs/tenant-acme", console=False)
tenant_logger.log_transaction(...)

Log File Schema

auditX separates log entries into three distinct files inside your configured log_dir:

File	Format	Purpose
audit.jsonl	JSON Lines	The core immutable audit trail (one JSON object per line) containing all business events.
security.jsonl	JSON Lines	Auth failures, rate limits, and critical security-sensitive operations.
app.log	Text (formatted)	Standard application warnings, debug traces, and system messages.

---

FastAPI & Starlette Integration (ASGI Middleware)

auditX includes a built-in, async-safe AuditMiddleware that automatically captures request routing metadata, tracks response times/status codes, logs unhandled exceptions, and handles request-scoped identifiers (like Request IDs and Session IDs).

[!NOTE] Because it is built on Python's native contextvars rather than threading.local, modifications to the RequestContext made within routes, dependency injection guards, or DB connectors will safely propagate to all downstream logs and back to the middleware's final request-response summary.

1. Register the Middleware

Mount AuditMiddleware to wrap your ASGI pipeline:

from fastapi import FastAPI
from auditx import AuditMiddleware

app = FastAPI(title="My ERP App")

# Registers the audit log middleware
app.add_middleware(
    AuditMiddleware,
    exclude_paths=["/docs", "/redoc", "/openapi.json", "/favicon.ico", "/healthz"]
)

2. Extract and Set User Context in Dependencies

Use a FastAPI dependency to authenticate users, extract tenancy, and populate context variables. The middleware isolates these values automatically per async task context.

from fastapi import Depends, Header, HTTPException, status
from auditx import RequestContext, audit, BusinessModule, AuditAction

async def authenticate_and_set_context(
    x_user: str = Header("SYSTEM"),
    x_role: str = Header(""),
    x_company: str = Header(""),
    x_branch: str = Header(""),
):
    # Populate context. All subsequent audit calls in this request task inherits these
    RequestContext.update(
        user=x_user,
        user_role=x_role,
        company_id=x_company,
        branch_id=x_branch,
    )
    return x_user

@app.post("/sales/invoice")
async def create_invoice(user: str = Depends(authenticate_and_set_context)):
    # Any transaction logged here inherits the request ID, client IP, and user context
    audit.log_transaction(
        "Sales invoice posted",
        module=BusinessModule.SALES,
        action=AuditAction.POST,
        reference_no="SI-2026-098",
        amount=450000,
    )
    return {"status": "posted"}

3. Request/Session ID Propagation & Errors

• Request ID: The middleware scans incoming request headers for a case-insensitive X-Request-ID. If missing, it generates a fresh UUID.
• Session ID: The middleware automatically scans for X-Session-ID to track persistent login sessions.
• Unhandled Exceptions: If an endpoint raises an exception, AuditMiddleware intercept it, logs a structured error (level ERROR, success=False, status 500), and raises it to allow standard FastAPI/Starlette exception handlers to process the response.

---

Django Integration (Custom Middleware)

Since Django uses standard synchronous or asynchronous thread pools depending on execution environment, contextvars behaves reliably when handled inside a request-response lifecycle middleware.

Here is a production-ready custom Django middleware implementation:

# my_project/middleware.py
import time
import uuid
from django.utils.deprecation import MiddlewareMixin
from auditx import RequestContext, audit, BusinessModule, AuditAction

class AuditDjangoMiddleware:
    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request):
        # 1. Resolve client IP address
        x_forwarded_for = request.META.get('HTTP_X_FORWARDED_FOR')
        if x_forwarded_for:
            ip = x_forwarded_for.split(',')[0].strip()
        else:
            ip = request.META.get('REMOTE_ADDR', '127.0.0.1')

        # 2. Extract context headers
        request_id = request.headers.get("X-Request-ID", str(uuid.uuid4()))
        session_id = request.headers.get("X-Session-ID", "")
        if not session_id and hasattr(request, "session") and request.session.session_key:
            session_id = request.session.session_key

        # 3. Setup context
        RequestContext.set(
            user=getattr(request.user, 'username', 'SYSTEM') if hasattr(request, 'user') else 'SYSTEM',
            user_role=getattr(request.user, 'role', '') if hasattr(request, 'user') else '',
            company_id=request.headers.get("X-Company-ID", ""),
            branch_id=request.headers.get("X-Branch-ID", ""),
            session_id=session_id,
            request_id=request_id,
            ip=ip,
        )

        start_time = time.perf_counter()

        try:
            response = self.get_response(request)
            status_code = response.status_code
        except Exception as exc:
            duration = (time.perf_counter() - start_time) * 1000
            ctx = RequestContext.get()
            audit.log(
                description=f"HTTP Request Failed: {str(exc)}",
                level="ERROR",
                module="system",
                action="READ",
                user=ctx.get("user", "SYSTEM"),
                user_role=ctx.get("user_role", ""),
                company_id=ctx.get("company_id", ""),
                branch_id=ctx.get("branch_id", ""),
                request_id=ctx.get("request_id", ""),
                session_id=ctx.get("session_id", ""),
                ip=ctx.get("ip", ip),
                method=request.method,
                endpoint=request.get_full_path(),
                status=500,
                success=False,
                metadata={"duration_ms": duration, "error": str(exc)},
            )
            raise exc

        # 4. Log completion metrics
        duration = (time.perf_counter() - start_time) * 1000
        ctx = RequestContext.get()
        success = 200 <= status_code < 400
        
        log_level = "AUDIT"
        if status_code >= 500:
            log_level = "ERROR"
        elif status_code >= 400:
            log_level = "WARNING"

        action_map = {
            "POST": "CREATE",
            "GET": "READ",
            "PUT": "UPDATE",
            "PATCH": "UPDATE",
            "DELETE": "DELETE",
        }
        action = action_map.get(request.method, "READ")

        audit.log(
            description=f"HTTP {request.method} {request.path} completed with {status_code}",
            level=log_level,
            module="system",
            action=action,
            user=ctx.get("user", "SYSTEM"),
            user_role=ctx.get("user_role", ""),
            company_id=ctx.get("company_id", ""),
            branch_id=ctx.get("branch_id", ""),
            request_id=ctx.get("request_id", ""),
            session_id=ctx.get("session_id", ""),
            ip=ctx.get("ip", ip),
            method=request.method,
            endpoint=request.get_full_path(),
            status=status_code,
            success=success,
            metadata={"duration_ms": duration},
        )

        # 5. Clear context to avoid leakage
        RequestContext.clear()
        
        return response

To enable this, add it to your MIDDLEWARE setting in settings.py:

# settings.py
MIDDLEWARE = [
    # ... standard django middlewares ...
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    # Register auditX middleware after Session & Authentication middlewares
    'my_project.middleware.AuditDjangoMiddleware',
]

---

Flask Integration (Request Hooks)

For Flask, you can implement RequestContext management using built-in lifecycle hooks. Since Flask requests run in isolated threads (under standard WSGI servers), cleanup must be performed at request teardown.

import time
import uuid
from flask import Flask, request, g
from auditx import RequestContext, audit

app = Flask(__name__)

@app.before_request
def setup_audit_context():
    g.start_time = time.perf_counter()
    
    # Resolve IP
    ip = request.headers.get("X-Forwarded-For", request.remote_addr or "127.0.0.1")
    if "," in ip:
        ip = ip.split(",")[0].strip()

    # Extract headers
    request_id = request.headers.get("X-Request-ID", str(uuid.uuid4()))
    session_id = request.headers.get("X-Session-ID", "")

    # Bind request variables
    RequestContext.set(
        user="SYSTEM",
        user_role="",
        company_id="",
        branch_id="",
        session_id=session_id,
        request_id=request_id,
        ip=ip
    )

@app.after_request
def log_audit_response(response):
    if not hasattr(g, "start_time"):
        return response

    duration = (time.perf_counter() - g.start_time) * 1000
    ctx = RequestContext.get()
    
    status_code = response.status_code
    success = 200 <= status_code < 400
    
    log_level = "AUDIT"
    if status_code >= 500:
        log_level = "ERROR"
    elif status_code >= 400:
        log_level = "WARNING"

    action_map = {"POST": "CREATE", "GET": "READ", "PUT": "UPDATE", "PATCH": "UPDATE", "DELETE": "DELETE"}
    action = action_map.get(request.method, "READ")

    audit.log(
        description=f"HTTP {request.method} {request.path} completed with {status_code}",
        level=log_level,
        module="system",
        action=action,
        user=ctx.get("user", "SYSTEM"),
        user_role=ctx.get("user_role", ""),
        company_id=ctx.get("company_id", ""),
        branch_id=ctx.get("branch_id", ""),
        request_id=ctx.get("request_id", ""),
        session_id=ctx.get("session_id", ""),
        ip=ctx.get("ip", "127.0.0.1"),
        method=request.method,
        endpoint=request.full_path,
        status=status_code,
        success=success,
        metadata={"duration_ms": duration},
    )
    return response

@app.teardown_request
def clear_audit_context(exception=None):
    # Ensure memory is cleaned up and context doesn't spill into subsequent request threads
    RequestContext.clear()

---

Background Tasks & Celery Integration

When passing executions off to background worker processes (like Celery, RQ, or custom Redis queues), contextvars will not automatically cross process/network boundaries.

You must manually serialize the active RequestContext state, pass it to your worker payload, and re-apply it inside the background worker context:

1. Serializing Context in a route

# app/routes.py
from fastapi import APIRouter
from auditx import RequestContext
from app.tasks import run_background_report

router = APIRouter()

@router.post("/reports/generate")
async def generate_report():
    # 1. Grab the active request context dict
    parent_context = RequestContext.get()
    
    # 2. Dispatch background task, passing context dict as argument
    run_background_report.delay(parent_context, report_id="REP-992")
    return {"status": "dispatched"}

2. Restoring Context in the Worker

# app/tasks.py
from celery import Celery
from auditx import RequestContext, audit, BusinessModule, AuditAction

celery_app = Celery("my_tasks", broker="redis://localhost:6379/0")

@celery_app.task
def run_background_report(parent_context: dict, report_id: str):
    # 1. Bind context variables to the celery worker execution thread
    RequestContext.set(
        user=parent_context.get("user", "SYSTEM"),
        user_role=parent_context.get("user_role", ""),
        company_id=parent_context.get("company_id", ""),
        branch_id=parent_context.get("branch_id", ""),
        session_id=parent_context.get("session_id", ""),
        request_id=parent_context.get("request_id", ""),
        ip=parent_context.get("ip", ""),
    )
    
    try:
        # Run report generation logic
        audit.log_transaction(
            "Financial statements exported",
            module=BusinessModule.REPORTING,
            action=AuditAction.EXPORT,
            reference_no=report_id,
            amount=0.0
        )
    finally:
        # 2. Cleanup context variables
        RequestContext.clear()

---

Database Syncing & Hook Callbacks (on_audit)

auditX supports synchronous, custom callback handlers invoked immediately after writing a log entry to disk. Use this hook to duplicate audit entries into databases (e.g., SQLite, PostgreSQL) or trigger external alert integrations.

[!WARNING] Database integrations should handle exceptions internally. Any unhandled exception raised within your callback will be logged internally in app.log but will not block the caller or cause file log write failures.

Example: Syncing Audit Logs to a Database

import json
import sqlite3
from auditx import configure, AuditEntry

def sync_audit_to_db(entry: AuditEntry) -> None:
    """Callback function executed on every audit event."""
    try:
        # Convert dataclass representation to dictionary
        data = entry.to_dict()
        
        # Open connection to sqlite DB
        conn = sqlite3.connect("my_application.db")
        cursor = conn.cursor()
        
        # Insert audit log into database
        cursor.execute(
            """
            INSERT INTO audit_logs (
                timestamp, level, module, action, description, 
                user, company_id, branch_id, reference_no, data_json
            ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
            """,
            (
                data.get("timestamp"),
                data.get("level"),
                data.get("module"),
                data.get("action"),
                data.get("description"),
                data.get("user"),
                data.get("company_id"),
                data.get("branch_id"),
                data.get("reference_no"),
                json.dumps(data)
            )
        )
        conn.commit()
        conn.close()
    except Exception as e:
        # Avoid crashing the application if database write fails.
        # This will automatically log to app.log since configure() captures it.
        raise e

# Register the callback during configuration
configure(
    log_dir="logs",
    on_audit=sync_audit_to_db
)

---

Public API Reference

Core Exports

Component	Type	Description
audit	Proxy	Lazy global proxy instance of AuditLogger singleton.
RequestContext	Class	Context manager holding thread/async-isolated request parameters.
AuditMiddleware	Middleware	Raw ASGI app wrapper capturing routing details and timings.
configure()	Function	Reconfigures settings (e.g., log_dir, on_audit) of global singleton.
create_logger()	Function	Factory method to initialize separate, isolated AuditLogger instances.

Business Enums

• LogLevel: DEBUG, INFO, NORMAL, WARNING, ERROR, CRITICAL, AUDIT, SECURITY
• BusinessModule: AUTH, SALES, PURCHASE, INVENTORY, ACCOUNTING, SERVICE, CRM, HR, REPORTING, SYSTEM
• AuditAction: CREATE, READ, UPDATE, DELETE, APPROVE, REJECT, VOID, POST, PAYMENT, REFUND, TRANSFER, ADJUST, LOGIN, LOGOUT, EXPORT, IMPORT

---

License

Copyright (c) 2026 auditX. All rights reserved.

This is proprietary software. Use is permitted only within projects explicitly authorized by auditX. You may not use, copy, modify, or distribute this software in any other project without prior written consent from auditX.

See LICENSE for the full terms.