# -*- coding: utf-8 -*-
"""Resource generator for load testing."""
import random
from datetime import datetime
from typing import Generator, List
from mcpgateway.db import Resource
from ..utils.distributions import exponential_decay_temporal, normal_distribution
from .base import BaseGenerator
class ResourceGenerator(BaseGenerator):
"""Generate Resource records with realistic distribution."""
def get_count(self) -> int:
"""Get total number of resources to generate."""
user_count = self.get_scale_config("users", 100)
avg_resources = self.get_scale_config("resources_per_user_avg", 100)
return int(user_count * avg_resources)
def get_dependencies(self) -> List[str]:
"""Resources depend on users."""
return ["UserGenerator"]
def generate(self) -> Generator[Resource, None, None]:
"""Generate resource records.
Yields:
Resource instances
"""
user_count = self.get_scale_config("users", 100)
min_resources = self.get_scale_config("resources_per_user_min", 10)
max_resources = self.get_scale_config("resources_per_user_max", 200)
avg_resources = self.get_scale_config("resources_per_user_avg", 100)
# Get temporal distribution
start_date = datetime.fromisoformat(self.config.get("temporal", {}).get("start_date", "2023-01-01"))
end_date = datetime.fromisoformat(self.config.get("temporal", {}).get("end_date", datetime.now().isoformat()))
recent_percent = self.config.get("temporal", {}).get("recent_data_percent", 80) / 100
# Resources per user distribution
resources_per_user = normal_distribution(user_count, min_resources, max_resources, avg_resources)
total_resources = sum(resources_per_user)
timestamps = exponential_decay_temporal(total_resources, start_date, end_date, recent_percent)
resource_idx = 0
resource_types = ["document", "dataset", "configuration", "schema", "template"]
mime_types = ["text/plain", "application/json", "text/markdown", "application/xml"]
for user_i in range(user_count):
user_email = f"user{user_i+1}@{self.email_domain}"
num_resources = resources_per_user[user_i]
for j in range(num_resources):
if resource_idx >= len(timestamps):
break
resource_type = random.choice(resource_types)
uri = f"resource://{user_email.split('@')[0]}/{resource_type}/{j+1}"
resource = Resource(
uri=uri,
name=f"{resource_type}_{j+1}",
description=self.faker.sentence(),
mime_type=random.choice(mime_types),
size=random.randint(100, 100000),
created_by=user_email,
enabled=True,
tags=[],
version=1,
visibility=random.choice(["public", "private", "team"]),
created_at=timestamps[resource_idx],
updated_at=timestamps[resource_idx],
)
resource_idx += 1
yield resource
