Files
breakpilot-compliance/backend-compliance/compliance/services/canonical_control_service.py
Sharang Parnerkar b850368ec9 refactor(backend/api): extract CanonicalControlService (Step 4 — file 6 of 18)
compliance/api/canonical_control_routes.py (514 LOC) -> 192 LOC thin
routes + 316-line CanonicalControlService + 105-line schemas file.

Canonical Control Library manages OWASP/NIST/ENISA-anchored security
control frameworks and controls. Like company_profile_routes, this file
uses raw SQL via sqlalchemy.text() because there are no SQLAlchemy
models for canonical_control_frameworks or canonical_controls.

Single-service split. Session management moved from bespoke
`with SessionLocal() as db:` blocks to Depends(get_db) for consistency.

Legacy test imports preserved via re-export (FrameworkResponse,
ControlResponse, SimilarityCheckRequest, SimilarityCheckResponse,
_control_row).

Validation extracted to a module-level `_validate_control_input` helper
so both create and update share the same checks. ValidationError (from
compliance.domain) replaces raw HTTPException(400) raises.

Verified:
  - 187/187 pytest (173 core + 14 canonical) pass
  - OpenAPI 360/484 unchanged
  - mypy compliance/ -> Success on 130 source files
  - canonical_control_routes.py 514 -> 192 LOC
  - Hard-cap violations: 13 -> 12

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-07 19:53:55 +02:00

317 lines
12 KiB
Python

# mypy: disable-error-code="arg-type,assignment,no-any-return,union-attr"
"""
Canonical Control Library service — framework + control CRUD with raw SQL.
Phase 1 Step 4: extracted from ``compliance.api.canonical_control_routes``.
Uses raw SQL via ``sqlalchemy.text()`` because the underlying tables
(``canonical_control_frameworks``, ``canonical_controls``) have no
SQLAlchemy model in this repo.
"""
import json
import re
from typing import Any, Optional
from sqlalchemy import text
from sqlalchemy.orm import Session
from compliance.domain import (
ConflictError,
NotFoundError,
ValidationError,
)
from compliance.schemas.canonical_control import (
ControlCreateRequest,
ControlUpdateRequest,
SimilarityCheckRequest,
)
_VALID_SEVERITIES = ("low", "medium", "high", "critical")
_CONTROL_ID_RE = re.compile(r"^[A-Z]{2,6}-[0-9]{3}$")
_JSON_CONTROL_FIELDS = {
"scope", "requirements", "test_procedure", "evidence", "open_anchors", "tags",
}
_CONTROL_COLUMNS = """
id, framework_id, control_id, title, objective, rationale,
scope, requirements, test_procedure, evidence,
severity, risk_score, implementation_effort, evidence_confidence,
open_anchors, release_state, tags, created_at, updated_at
"""
def _control_row(r: Any) -> dict[str, Any]:
"""Serialize a canonical_controls SELECT row to a response dict."""
return {
"id": str(r.id),
"framework_id": str(r.framework_id),
"control_id": r.control_id,
"title": r.title,
"objective": r.objective,
"rationale": r.rationale,
"scope": r.scope,
"requirements": r.requirements,
"test_procedure": r.test_procedure,
"evidence": r.evidence,
"severity": r.severity,
"risk_score": float(r.risk_score) if r.risk_score is not None else None,
"implementation_effort": r.implementation_effort,
"evidence_confidence": (
float(r.evidence_confidence) if r.evidence_confidence is not None else None
),
"open_anchors": r.open_anchors,
"release_state": r.release_state,
"tags": r.tags or [],
"created_at": r.created_at.isoformat() if r.created_at else None,
"updated_at": r.updated_at.isoformat() if r.updated_at else None,
}
def _framework_row(r: Any) -> dict[str, Any]:
return {
"id": str(r.id),
"framework_id": r.framework_id,
"name": r.name,
"version": r.version,
"description": r.description,
"owner": r.owner,
"policy_version": r.policy_version,
"release_state": r.release_state,
"created_at": r.created_at.isoformat() if r.created_at else None,
"updated_at": r.updated_at.isoformat() if r.updated_at else None,
}
def _validate_control_input(
severity: Optional[str], risk_score: Optional[float], control_id: Optional[str] = None
) -> None:
if control_id is not None and not _CONTROL_ID_RE.match(control_id):
raise ValidationError("control_id must match DOMAIN-NNN (e.g. AUTH-001)")
if severity is not None and severity not in _VALID_SEVERITIES:
raise ValidationError("severity must be low/medium/high/critical")
if risk_score is not None and not (0 <= risk_score <= 10):
raise ValidationError("risk_score must be 0..10")
class CanonicalControlService:
"""Business logic for the canonical control library."""
def __init__(self, db: Session) -> None:
self.db = db
# ------------------------------------------------------------------
# Frameworks
# ------------------------------------------------------------------
def list_frameworks(self) -> list[dict[str, Any]]:
rows = self.db.execute(
text("""
SELECT id, framework_id, name, version, description,
owner, policy_version, release_state,
created_at, updated_at
FROM canonical_control_frameworks
ORDER BY name
""")
).fetchall()
return [_framework_row(r) for r in rows]
def get_framework(self, framework_id: str) -> dict[str, Any]:
row = self.db.execute(
text("""
SELECT id, framework_id, name, version, description,
owner, policy_version, release_state,
created_at, updated_at
FROM canonical_control_frameworks
WHERE framework_id = :fid
"""),
{"fid": framework_id},
).fetchone()
if not row:
raise NotFoundError("Framework not found")
return _framework_row(row)
def list_framework_controls(
self, framework_id: str, severity: Optional[str], release_state: Optional[str]
) -> list[dict[str, Any]]:
fw = self.db.execute(
text("SELECT id FROM canonical_control_frameworks WHERE framework_id = :fid"),
{"fid": framework_id},
).fetchone()
if not fw:
raise NotFoundError("Framework not found")
query = f"SELECT {_CONTROL_COLUMNS} FROM canonical_controls WHERE framework_id = :fw_id"
params: dict[str, Any] = {"fw_id": str(fw.id)}
if severity:
query += " AND severity = :sev"
params["sev"] = severity
if release_state:
query += " AND release_state = :rs"
params["rs"] = release_state
query += " ORDER BY control_id"
rows = self.db.execute(text(query), params).fetchall()
return [_control_row(r) for r in rows]
# ------------------------------------------------------------------
# Controls
# ------------------------------------------------------------------
def list_controls(
self,
severity: Optional[str],
domain: Optional[str],
release_state: Optional[str],
) -> list[dict[str, Any]]:
query = f"SELECT {_CONTROL_COLUMNS} FROM canonical_controls WHERE 1=1"
params: dict[str, Any] = {}
if severity:
query += " AND severity = :sev"
params["sev"] = severity
if domain:
query += " AND LEFT(control_id, LENGTH(:dom)) = :dom"
params["dom"] = domain.upper()
if release_state:
query += " AND release_state = :rs"
params["rs"] = release_state
query += " ORDER BY control_id"
rows = self.db.execute(text(query), params).fetchall()
return [_control_row(r) for r in rows]
def get_control(self, control_id: str) -> dict[str, Any]:
row = self.db.execute(
text(f"SELECT {_CONTROL_COLUMNS} FROM canonical_controls WHERE control_id = :cid"),
{"cid": control_id.upper()},
).fetchone()
if not row:
raise NotFoundError("Control not found")
return _control_row(row)
def create_control(self, body: ControlCreateRequest) -> dict[str, Any]:
_validate_control_input(body.severity, body.risk_score, body.control_id)
fw = self.db.execute(
text("SELECT id FROM canonical_control_frameworks WHERE framework_id = :fid"),
{"fid": body.framework_id},
).fetchone()
if not fw:
raise NotFoundError(f"Framework '{body.framework_id}' not found")
existing = self.db.execute(
text(
"SELECT id FROM canonical_controls "
"WHERE framework_id = :fid AND control_id = :cid"
),
{"fid": str(fw.id), "cid": body.control_id},
).fetchone()
if existing:
raise ConflictError(f"Control '{body.control_id}' already exists")
row = self.db.execute(
text(f"""
INSERT INTO canonical_controls (
framework_id, control_id, title, objective, rationale,
scope, requirements, test_procedure, evidence,
severity, risk_score, implementation_effort, evidence_confidence,
open_anchors, release_state, tags
) VALUES (
:fw_id, :cid, :title, :objective, :rationale,
:scope::jsonb, :requirements::jsonb, :test_procedure::jsonb, :evidence::jsonb,
:severity, :risk_score, :effort, :confidence,
:anchors::jsonb, :release_state, :tags::jsonb
)
RETURNING {_CONTROL_COLUMNS}
"""),
{
"fw_id": str(fw.id),
"cid": body.control_id,
"title": body.title,
"objective": body.objective,
"rationale": body.rationale,
"scope": json.dumps(body.scope),
"requirements": json.dumps(body.requirements),
"test_procedure": json.dumps(body.test_procedure),
"evidence": json.dumps(body.evidence),
"severity": body.severity,
"risk_score": body.risk_score,
"effort": body.implementation_effort,
"confidence": body.evidence_confidence,
"anchors": json.dumps(body.open_anchors),
"release_state": body.release_state,
"tags": json.dumps(body.tags),
},
).fetchone()
self.db.commit()
return _control_row(row)
def update_control(
self, control_id: str, body: ControlUpdateRequest
) -> dict[str, Any]:
updates = body.dict(exclude_none=True)
if not updates:
raise ValidationError("No fields to update")
_validate_control_input(updates.get("severity"), updates.get("risk_score"))
set_parts: list[str] = []
params: dict[str, Any] = {"cid": control_id.upper()}
for key, val in updates.items():
if key in _JSON_CONTROL_FIELDS:
set_parts.append(f"{key} = :{key}::jsonb")
params[key] = json.dumps(val)
else:
set_parts.append(f"{key} = :{key}")
params[key] = val
set_parts.append("updated_at = NOW()")
row = self.db.execute(
text(f"""
UPDATE canonical_controls
SET {', '.join(set_parts)}
WHERE control_id = :cid
RETURNING {_CONTROL_COLUMNS}
"""),
params,
).fetchone()
if not row:
raise NotFoundError("Control not found")
self.db.commit()
return _control_row(row)
def delete_control(self, control_id: str) -> None:
result: Any = self.db.execute(
text("DELETE FROM canonical_controls WHERE control_id = :cid"),
{"cid": control_id.upper()},
)
if result.rowcount == 0:
raise NotFoundError("Control not found")
self.db.commit()
# ------------------------------------------------------------------
# Similarity + sources + licenses
# ------------------------------------------------------------------
async def similarity_check(
self, control_id: str, body: SimilarityCheckRequest
) -> dict[str, Any]:
from compliance.services.similarity_detector import check_similarity
report = await check_similarity(body.source_text, body.candidate_text)
return {
"control_id": control_id.upper(),
"max_exact_run": report.max_exact_run,
"token_overlap": report.token_overlap,
"ngram_jaccard": report.ngram_jaccard,
"embedding_cosine": report.embedding_cosine,
"lcs_ratio": report.lcs_ratio,
"status": report.status,
"details": report.details,
}
def list_sources(self) -> Any:
from compliance.services.license_gate import get_source_permissions
return get_source_permissions(self.db)
def list_licenses(self) -> Any:
from compliance.services.license_gate import get_license_matrix
return get_license_matrix(self.db)