Files
2026-06-20 15:01:44 +05:30

107 lines
4.8 KiB
Python

from __future__ import annotations
from starlette.middleware.base import BaseHTTPMiddleware
from starlette.requests import Request
from starlette.types import ASGIApp
from app.core.db.common import CommonSessionLocal
from app.modules.domain_management.services import normalize_request_host, resolve_domain_context
class DomainResolverMiddleware(BaseHTTPMiddleware):
"""Resolve request host to platform / tenant / consultant context.
Phase 7T.2 is intentionally read-only:
- It does not redirect users.
- It does not change database records.
- It does not override logged-in user permissions.
- It only exposes a trusted runtime context on request.state.
Later phases use this context for branding, marketplace mode, tenant subdomains,
consultant domains, and custom domain verification.
"""
def __init__(self, app: ASGIApp) -> None:
super().__init__(app)
async def dispatch(self, request: Request, call_next):
host_header = request.headers.get("x-forwarded-host") or request.headers.get("host")
host = normalize_request_host(host_header)
# Safe defaults; every template/route can read these without checking existence.
request.state.request_host = host
request.state.domain_resolved = False
request.state.domain_mapping_id = None
request.state.domain_name = host
request.state.domain_type = None
request.state.domain_tenant_id = None
request.state.domain_tenant_code = None
request.state.domain_branch_id = None
request.state.domain_branch_code = None
request.state.domain_consultant_id = None
request.state.domain_parent_tenant_id = None
request.state.domain_is_verified = False
request.state.domain_status = None
request.state.domain_context = {
"is_resolved": False,
"host": host,
"mapping_id": None,
"domain_name": host,
"domain_type": None,
"tenant_id": None,
"tenant_code": None,
"branch_id": None,
"branch_code": None,
"consultant_id": None,
"parent_tenant_id": None,
"is_verified": False,
"status": None,
}
# Static files and empty/invalid host can proceed without DB lookup.
if host and not request.url.path.startswith("/static/"):
db = CommonSessionLocal()
try:
resolved = resolve_domain_context(db, host)
if resolved.is_resolved:
request.state.domain_resolved = True
request.state.domain_mapping_id = resolved.mapping_id
request.state.domain_name = resolved.domain_name
request.state.domain_type = resolved.domain_type
request.state.domain_tenant_id = resolved.tenant_id
request.state.domain_tenant_code = resolved.tenant_code
request.state.domain_branch_id = resolved.branch_id
request.state.domain_branch_code = resolved.branch_code
request.state.domain_consultant_id = resolved.consultant_id
request.state.domain_parent_tenant_id = resolved.parent_tenant_id
request.state.domain_is_verified = resolved.is_verified
request.state.domain_status = resolved.status
request.state.domain_context = {
"is_resolved": True,
"host": resolved.host,
"mapping_id": resolved.mapping_id,
"domain_name": resolved.domain_name,
"domain_type": resolved.domain_type,
"tenant_id": resolved.tenant_id,
"tenant_code": resolved.tenant_code,
"branch_id": resolved.branch_id,
"branch_code": resolved.branch_code,
"consultant_id": resolved.consultant_id,
"parent_tenant_id": resolved.parent_tenant_id,
"is_verified": resolved.is_verified,
"status": resolved.status,
}
except Exception:
# Domain resolution must never take the ERP down. If the domain table is
# missing during deployment or DB is temporarily unavailable, continue
# with the normal default context.
pass
finally:
db.close()
response = await call_next(request)
if getattr(request.state, "domain_resolved", False):
response.headers["X-AuditFirm-Domain-Resolved"] = "1"
response.headers["X-AuditFirm-Domain-Type"] = str(getattr(request.state, "domain_type", "") or "")
return response