⚡️ Speed up method BaseArangoService._validate_folder_creation by 6%

[codeflash-ai]

📄 6% (0.06x) speedup for BaseArangoService._validate_folder_creation in backend/python/app/connectors/services/base_arango_service.py

⏱️ Runtime : 1.06 milliseconds → 1.00 millisecond (best of 241 runs)

📝 Explanation and details

The optimized code achieves a 5% runtime improvement and 0.4% throughput improvement through three specific micro-optimizations:

Key Optimizations:

1. Set-based membership check: Changed user_role not in ["OWNER", "WRITER"] to user_role not in {"OWNER", "WRITER"}. Sets provide O(1) lookup time vs O(n) for lists, making permission validation faster when this check is performed repeatedly.

2. ArangoDB bind variable optimization: Replaced f-string formatting f"FOR user IN {CollectionNames.USERS.value}" with parameterized queries using @@users_collection bind variables. This eliminates string concatenation overhead on every database call and allows ArangoDB's query parser to better cache and reuse compiled queries.

3. Bind variables dictionary reuse: The bind_vars dictionary is now created once and reused for both the main permission query and debug query, reducing dictionary creation overhead.

Performance Impact:

These optimizations are particularly effective for the validation workloads shown in the test cases:

• Concurrent validation scenarios (like the 50-100 user batch tests) benefit most from the set-based membership check since permission validation occurs frequently
• Repeated database queries benefit from the parameterized query optimization, especially in high-throughput scenarios where the same query patterns are executed multiple times
• The 0.4% throughput improvement indicates better processing efficiency for bulk operations

The optimizations maintain identical functionality and error handling while reducing computational overhead in frequently-executed code paths. Given that folder creation validation likely occurs in user-facing workflows, even small performance gains translate to better user experience under load.

✅ Correctness verification report:

Test	Status
⚙️ Existing Unit Tests	🔘 None Found
🌀 Generated Regression Tests	✅ 650 Passed
⏪ Replay Tests	🔘 None Found
🔎 Concolic Coverage Tests	🔘 None Found
📊 Tests Coverage	100.0%

🌀 Generated Regression Tests and Runtime

import asyncio # used to run async functions

import pytest # used for our unit tests
from app.connectors.services.base_arango_service import BaseArangoService

---------------------------

Unit Tests for _validate_folder_creation

---------------------------

Helper: Dummy logger

class DummyLogger:
def info(self, msg): pass
def warning(self, msg): pass
def error(self, msg): pass

Helper: Dummy config

class DummyConfig: pass

Helper: Dummy client

class DummyClient: pass

@pytest.fixture
def service():
# Create a fresh instance for each test
return BaseArangoService(DummyLogger(), DummyClient(), DummyConfig())

---------------------------

1. Basic Test Cases

---------------------------

@pytest.mark.asyncio
async def test_validate_folder_creation_success_owner(service, monkeypatch):
"""Test: User exists and has OWNER role (should succeed)"""

# Patch get_user_by_user_id to return a valid user
async def mock_get_user_by_user_id(user_id):
    return {"_key": "user123", "userId": user_id}
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

# Patch get_user_kb_permission to return OWNER
async def mock_get_user_kb_permission(kb_id, user_key):
    return "OWNER"
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

result = await service._validate_folder_creation("kb001", "[email protected]")

@pytest.mark.asyncio
async def test_validate_folder_creation_success_writer(service, monkeypatch):
"""Test: User exists and has WRITER role (should succeed)"""

async def mock_get_user_by_user_id(user_id):
    return {"_key": "user456", "userId": user_id}
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

async def mock_get_user_kb_permission(kb_id, user_key):
    return "WRITER"
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

result = await service._validate_folder_creation("kb002", "[email protected]")

@pytest.mark.asyncio
async def test_validate_folder_creation_user_not_found(service, monkeypatch):
"""Test: User does not exist (should return 404 error)"""

async def mock_get_user_by_user_id(user_id):
    return None  # Simulate user not found
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

# Should not call get_user_kb_permission, but patch anyway
async def mock_get_user_kb_permission(kb_id, user_key):
    return "OWNER"
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

result = await service._validate_folder_creation("kb003", "missing_user")

@pytest.mark.asyncio
async def test_validate_folder_creation_insufficient_permissions(service, monkeypatch):
"""Test: User exists but has insufficient permissions (should return 403)"""

async def mock_get_user_by_user_id(user_id):
    return {"_key": "user789", "userId": user_id}
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

async def mock_get_user_kb_permission(kb_id, user_key):
    return "READER"  # Not OWNER/WRITER
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

result = await service._validate_folder_creation("kb004", "[email protected]")

@pytest.mark.asyncio
async def test_validate_folder_creation_no_role(service, monkeypatch):
"""Test: User exists but has no role (get_user_kb_permission returns None)"""

async def mock_get_user_by_user_id(user_id):
    return {"_key": "user999", "userId": user_id}
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

async def mock_get_user_kb_permission(kb_id, user_key):
    return None
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

result = await service._validate_folder_creation("kb005", "[email protected]")

---------------------------

2. Edge Test Cases

---------------------------

@pytest.mark.asyncio
async def test_validate_folder_creation_exception_in_user_fetch(service, monkeypatch):
"""Test: Exception occurs in get_user_by_user_id (should return code 500)"""

async def mock_get_user_by_user_id(user_id):
    raise RuntimeError("DB connection failed")
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

async def mock_get_user_kb_permission(kb_id, user_key):
    return "OWNER"
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

result = await service._validate_folder_creation("kb006", "user_error")

@pytest.mark.asyncio
async def test_validate_folder_creation_exception_in_permission_fetch(service, monkeypatch):
"""Test: Exception occurs in get_user_kb_permission (should return code 500)"""

async def mock_get_user_by_user_id(user_id):
    return {"_key": "user777", "userId": user_id}
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

async def mock_get_user_kb_permission(kb_id, user_key):
    raise ValueError("Permission query failed")
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

result = await service._validate_folder_creation("kb007", "perm_error")

@pytest.mark.asyncio
async def test_validate_folder_creation_concurrent_success(service, monkeypatch):
"""Test: Multiple concurrent calls succeed with different users"""

# Patch to return different users based on user_id
async def mock_get_user_by_user_id(user_id):
    return {"_key": user_id, "userId": user_id}
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

async def mock_get_user_kb_permission(kb_id, user_key):
    return "OWNER" if user_key.endswith("A") else "WRITER"
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

# Prepare concurrent calls
coros = [
    service._validate_folder_creation("kb008", "userA"),
    service._validate_folder_creation("kb008", "userB"),
    service._validate_folder_creation("kb008", "userC"),
]
results = await asyncio.gather(*coros)
# All should be valid
for res in results:
    pass

@pytest.mark.asyncio
async def test_validate_folder_creation_concurrent_mixed(service, monkeypatch):
"""Test: Concurrent calls with mixed permissions and missing users"""

# Patch to simulate some users missing
async def mock_get_user_by_user_id(user_id):
    if user_id == "missing":
        return None
    return {"_key": user_id, "userId": user_id}
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

async def mock_get_user_kb_permission(kb_id, user_key):
    if user_key == "badrole":
        return "READER"
    return "OWNER"
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

coros = [
    service._validate_folder_creation("kb009", "user1"),      # valid
    service._validate_folder_creation("kb009", "badrole"),    # insufficient permission
    service._validate_folder_creation("kb009", "missing"),    # user not found
]
results = await asyncio.gather(*coros)

---------------------------

3. Large Scale Test Cases

---------------------------

@pytest.mark.asyncio
async def test_validate_folder_creation_large_batch(service, monkeypatch):
"""Test: Large batch of concurrent calls with alternating permissions"""

# Patch to simulate user always exists
async def mock_get_user_by_user_id(user_id):
    return {"_key": user_id, "userId": user_id}
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

# Patch to alternate between OWNER/WRITER/READER
async def mock_get_user_kb_permission(kb_id, user_key):
    idx = int(user_key.split("_")[1])
    if idx % 3 == 0:
        return "OWNER"
    elif idx % 3 == 1:
        return "WRITER"
    else:
        return "READER"
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

coros = [
    service._validate_folder_creation("kb010", f"user_{i}")
    for i in range(50)  # 50 concurrent calls
]
results = await asyncio.gather(*coros)
# Every third should be invalid (READER)
for i, res in enumerate(results):
    if i % 3 == 2:
        pass
    else:
        pass

---------------------------

4. Throughput Test Cases

---------------------------

@pytest.mark.asyncio
async def test_validate_folder_creation_throughput_small_load(service, monkeypatch):
"""Throughput: Small load, all users valid"""

async def mock_get_user_by_user_id(user_id):
    return {"_key": user_id, "userId": user_id}
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

async def mock_get_user_kb_permission(kb_id, user_key):
    return "OWNER"
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

coros = [service._validate_folder_creation("kb011", f"user_{i}") for i in range(10)]
results = await asyncio.gather(*coros)

@pytest.mark.asyncio
async def test_validate_folder_creation_throughput_medium_load(service, monkeypatch):
"""Throughput: Medium load, some users missing"""

async def mock_get_user_by_user_id(user_id):
    if int(user_id.split("_")[1]) % 5 == 0:
        return None  # Simulate missing user
    return {"_key": user_id, "userId": user_id}
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

async def mock_get_user_kb_permission(kb_id, user_key):
    return "WRITER"
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

coros = [service._validate_folder_creation("kb012", f"user_{i}") for i in range(30)]
results = await asyncio.gather(*coros)
for i, res in enumerate(results):
    if i % 5 == 0:
        pass
    else:
        pass

@pytest.mark.asyncio
async def test_validate_folder_creation_throughput_high_volume(service, monkeypatch):
"""Throughput: High volume, mix of valid and invalid permissions"""

async def mock_get_user_by_user_id(user_id):
    # Simulate some users missing
    idx = int(user_id.split("_")[1])
    if idx % 17 == 0:
        return None
    return {"_key": user_id, "userId": user_id}
monkeypatch.setattr(service, "get_user_by_user_id", mock_get_user_by_user_id)

async def mock_get_user_kb_permission(kb_id, user_key):
    idx = int(user_key.split("_")[1])
    if idx % 7 == 0:
        return "READER"
    return "OWNER"
monkeypatch.setattr(service, "get_user_kb_permission", mock_get_user_kb_permission)

coros = [service._validate_folder_creation("kb013", f"user_{i}") for i in range(100)]
results = await asyncio.gather(*coros)
for i, res in enumerate(results):
    if i % 17 == 0:
        pass
    elif i % 7 == 0:
        pass
    else:
        pass

codeflash_output is used to check that the output of the original code is the same as that of the optimized code.

#------------------------------------------------
import asyncio # used to run async functions

import pytest # used for our unit tests
from app.connectors.services.base_arango_service import BaseArangoService

=========================

Function to test

=========================

The function and class definition are copied EXACTLY as provided.

No changes or enhancements are made.

class DummyLogger:
"""A simple logger for testing purposes."""
def info(self, msg): pass
def warning(self, msg): pass
def error(self, msg): pass

class DummyDB:
"""A dummy DB object for simulating AQL execution."""
def init(self, users=None, permissions=None):
# users: dict mapping user_id to user dict
# permissions: dict mapping (user_key, kb_id) to role
self.users = users or {}
self.permissions = permissions or {}

class aql:
    @staticmethod
    def execute(query, bind_vars):
        # Simulate user query
        if "FOR user IN" in query:
            user_id = bind_vars["user_id"]
            for user in DummyDB._users.values():
                if user.get("userId") == user_id:
                    yield user
                    return
            return
        # Simulate permission query
        elif "FOR perm IN" in query and "FILTER perm._from == CONCAT('users/', @user_id)" in query:
            kb_id = bind_vars["kb_id"]
            user_id = bind_vars["user_id"]
            key = (user_id, kb_id)
            role = DummyDB._permissions.get(key)
            if role:
                yield {"role": role}
                return
            return
        # Simulate debug permission query
        elif "FOR perm IN" in query and "FILTER perm._to == CONCAT('recordGroups/', @kb_id)" in query:
            kb_id = bind_vars["kb_id"]
            results = []
            for (user_id, kb), role in DummyDB._permissions.items():
                if kb == kb_id:
                    results.append({
                        "from": f"users/{user_id}",
                        "role": role,
                        "type": "dummy"
                    })
            for res in results:
                yield res
            return
        else:
            return

@classmethod
def set_data(cls, users, permissions):
    cls._users = users
    cls._permissions = permissions

Patch the DummyDB.aql.execute to use instance data

DummyDB.aql.execute = lambda self, query, bind_vars: DummyDB.aql.execute(query, bind_vars)

Patchable BaseArangoService for testing

class TestBaseArangoService(BaseArangoService):
def init(self, users, permissions):
super().init(DummyLogger(), None, None)
self.db = DummyDB(users, permissions)
DummyDB.set_data(users, permissions)

=========================

Unit Tests

=========================

@pytest.mark.asyncio
async def test_validate_folder_creation_basic_owner():
"""
Basic Case: Valid user, valid KB, user has OWNER role.
Should return valid=True and correct user info.
"""
users = {"u1": {"_key": "u1", "userId": "u1", "name": "User One"}}
permissions = {("u1", "kb1"): "OWNER"}
service = TestBaseArangoService(users, permissions)
result = await service._validate_folder_creation("kb1", "u1")

@pytest.mark.asyncio
async def test_validate_folder_creation_basic_writer():
"""
Basic Case: Valid user, valid KB, user has WRITER role.
Should return valid=True and correct user info.
"""
users = {"u2": {"_key": "u2", "userId": "u2", "name": "User Two"}}
permissions = {("u2", "kb2"): "WRITER"}
service = TestBaseArangoService(users, permissions)
result = await service._validate_folder_creation("kb2", "u2")

@pytest.mark.asyncio
async def test_validate_folder_creation_user_not_found():
"""
Edge Case: User does not exist.
Should return valid=False, success=False, code=404.
"""
users = {"u3": {"_key": "u3", "userId": "u3"}}
permissions = {("u3", "kb3"): "OWNER"}
service = TestBaseArangoService(users, permissions)
result = await service._validate_folder_creation("kb3", "uX")

@pytest.mark.asyncio
async def test_validate_folder_creation_insufficient_permission():
"""
Edge Case: User exists but has insufficient permission (READER).
Should return valid=False, success=False, code=403.
"""
users = {"u4": {"_key": "u4", "userId": "u4"}}
permissions = {("u4", "kb4"): "READER"}
service = TestBaseArangoService(users, permissions)
result = await service._validate_folder_creation("kb4", "u4")

@pytest.mark.asyncio
async def test_validate_folder_creation_no_permission():
"""
Edge Case: User exists but has no permission entry for KB.
Should return valid=False, success=False, code=403.
"""
users = {"u5": {"_key": "u5", "userId": "u5"}}
permissions = {} # No permissions for user u5
service = TestBaseArangoService(users, permissions)
result = await service._validate_folder_creation("kb5", "u5")

@pytest.mark.asyncio
async def test_validate_folder_creation_exception_in_get_user():
"""
Edge Case: Simulate exception in get_user_by_user_id.
Should return valid=False, success=False, code=500.
"""
class ExceptionService(TestBaseArangoService):
async def get_user_by_user_id(self, user_id: str):
raise RuntimeError("DB failure in get_user_by_user_id")
service = ExceptionService({}, {})
result = await service._validate_folder_creation("kb6", "u6")

@pytest.mark.asyncio
async def test_validate_folder_creation_exception_in_get_permission():
"""
Edge Case: Simulate exception in get_user_kb_permission.
Should return valid=False, success=False, code=500.
"""
class ExceptionService(TestBaseArangoService):
async def get_user_kb_permission(self, kb_id, user_key):
raise ValueError("Permission DB error")
users = {"u7": {"_key": "u7", "userId": "u7"}}
service = ExceptionService(users, {})
result = await service._validate_folder_creation("kb7", "u7")

@pytest.mark.asyncio
async def test_validate_folder_creation_concurrent():
"""
Edge Case: Test concurrent execution with different users and KBs.
Should return correct results for each input.
"""
users = {
"u8": {"_key": "u8", "userId": "u8"},
"u9": {"_key": "u9", "userId": "u9"},
"u10": {"_key": "u10", "userId": "u10"},
}
permissions = {
("u8", "kb8"): "OWNER",
("u9", "kb9"): "WRITER",
("u10", "kb10"): "READER",
}
service = TestBaseArangoService(users, permissions)
tasks = [
service._validate_folder_creation("kb8", "u8"), # valid OWNER
service._validate_folder_creation("kb9", "u9"), # valid WRITER
service._validate_folder_creation("kb10", "u10"), # insufficient permission
service._validate_folder_creation("kbX", "uX"), # user not found
]
results = await asyncio.gather(*tasks)

@pytest.mark.asyncio
async def test_validate_folder_creation_large_scale():
"""
Large Scale: Test with 100 users and KBs, half with OWNER, half with READER.
Should return valid=True for OWNER, valid=False for READER.
"""
users = {f"user{i}": {"_key": f"user{i}", "userId": f"user{i}"} for i in range(100)}
permissions = {(f"user{i}", f"kb{i}"): "OWNER" if i % 2 == 0 else "READER" for i in range(100)}
service = TestBaseArangoService(users, permissions)
tasks = [service._validate_folder_creation(f"kb{i}", f"user{i}") for i in range(100)]
results = await asyncio.gather(*tasks)
for i, result in enumerate(results):
if i % 2 == 0:
pass
else:
pass

@pytest.mark.asyncio
async def test_validate_folder_creation_large_scale_missing_users():
"""
Large Scale Edge: 50 users, 50 KBs, but 10 users missing.
Should return valid=False, code=404 for missing users.
"""
users = {f"user{i}": {"_key": f"user{i}", "userId": f"user{i}"} for i in range(40)}
permissions = {(f"user{i}", f"kb{i}"): "OWNER" for i in range(50)}
service = TestBaseArangoService(users, permissions)
tasks = [service._validate_folder_creation(f"kb{i}", f"user{i}") for i in range(50)]
results = await asyncio.gather(*tasks)
for i, result in enumerate(results):
if i < 40:
pass
else:
pass

@pytest.mark.asyncio
async def test_validate_folder_creation_throughput_small_load():
"""
Throughput Test: Small load (10 concurrent requests).
All users have OWNER role.
"""
users = {f"user{i}": {"_key": f"user{i}", "userId": f"user{i}"} for i in range(10)}
permissions = {(f"user{i}", f"kb{i}"): "OWNER" for i in range(10)}
service = TestBaseArangoService(users, permissions)
tasks = [service._validate_folder_creation(f"kb{i}", f"user{i}") for i in range(10)]
results = await asyncio.gather(*tasks)

@pytest.mark.asyncio
async def test_validate_folder_creation_throughput_medium_load():
"""
Throughput Test: Medium load (50 concurrent requests).
Half OWNER, half WRITER.
"""
users = {f"user{i}": {"_key": f"user{i}", "userId": f"user{i}"} for i in range(50)}
permissions = {(f"user{i}", f"kb{i}"): "OWNER" if i < 25 else "WRITER" for i in range(50)}
service = TestBaseArangoService(users, permissions)
tasks = [service._validate_folder_creation(f"kb{i}", f"user{i}") for i in range(50)]
results = await asyncio.gather(*tasks)
for i, r in enumerate(results):
if i < 25:
pass
else:
pass

@pytest.mark.asyncio
async def test_validate_folder_creation_throughput_high_volume():
"""
Throughput Test: High volume (200 concurrent requests).
Mix of OWNER, WRITER, READER, and missing users.
"""
users = {f"user{i}": {"_key": f"user{i}", "userId": f"user{i}"} for i in range(150)}
permissions = {}
for i in range(200):
if i < 50:
permissions[(f"user{i}", f"kb{i}")] = "OWNER"
elif i < 100:
permissions[(f"user{i}", f"kb{i}")] = "WRITER"
elif i < 150:
permissions[(f"user{i}", f"kb{i}")] = "READER"
# else: no permissions, and user missing for i >= 150
service = TestBaseArangoService(users, permissions)
tasks = [service._validate_folder_creation(f"kb{i}", f"user{i}") for i in range(200)]
results = await asyncio.gather(*tasks)
for i, r in enumerate(results):
if i < 50:
pass
elif i < 100:
pass
elif i < 150:
pass
else:
pass

codeflash_output is used to check that the output of the original code is the same as that of the optimized code.

To edit these changes git checkout codeflash/optimize-BaseArangoService._validate_folder_creation-mhy77tlf and push.