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import httpx
import asyncio
import os
import uuid
from pathlib import Path
from typing import Optional, Dict, Any
import json
from datetime import datetime
import aiofiles
class MiddlewareClient:
def __init__(self, base_url: str = "https://fred808-vssee.hf.space"):
self.base_url = base_url.rstrip('/')
self.client = httpx.AsyncClient(timeout=30.0) # 30 second timeout
self.requester_id = str(uuid.uuid4()) # Unique ID for this client
self.download_dir = Path("downloads")
self.download_dir.mkdir(exist_ok=True)
# Keep track of our current locks
self.current_course: Optional[str] = None
self.current_image: Optional[str] = None
# Statistics
self.stats = {
"downloads_started": 0,
"downloads_completed": 0,
"bytes_downloaded": 0,
"start_time": datetime.now().isoformat()
}
async def close(self):
"""Close the HTTP client"""
await self.client.aclose()
async def get_next_course(self) -> Optional[Dict[str, Any]]:
"""Get next available course"""
try:
response = await self.client.get(
f"{self.base_url}/middleware/next/course",
params={"requester_id": self.requester_id}
)
response.raise_for_status()
course_data = response.json()
self.current_course = course_data["course_id"]
return course_data
except httpx.HTTPError as e:
if e.response.status_code == 404:
print("No more courses available")
return None
raise
async def get_next_image(self, course_id: str) -> Optional[Dict[str, Any]]:
"""Get next available image from a course"""
try:
response = await self.client.get(
f"{self.base_url}/middleware/next/image/{course_id}",
params={"requester_id": self.requester_id}
)
response.raise_for_status()
image_data = response.json()
self.current_image = image_data["file_id"]
return image_data
except httpx.HTTPError as e:
if e.response.status_code == 404:
print(f"No more images available in course {course_id}")
return None
raise
async def release_course(self, course_id: str):
"""Release lock on a course"""
try:
response = await self.client.post(
f"{self.base_url}/middleware/release/course/{course_id}",
params={"requester_id": self.requester_id}
)
response.raise_for_status()
self.current_course = None
except httpx.HTTPError as e:
print(f"Error releasing course {course_id}: {e}")
async def release_image(self, course_id: str, file_id: str):
"""Release lock on an image"""
try:
response = await self.client.post(
f"{self.base_url}/middleware/release/image/{course_id}/{file_id}",
params={"requester_id": self.requester_id}
)
response.raise_for_status()
self.current_image = None
except httpx.HTTPError as e:
print(f"Error releasing image {file_id}: {e}")
async def download_file(self, course: str, file_id: str) -> bool:
save_path = self.download_dir / course / file_id
save_path.parent.mkdir(parents=True, exist_ok=True)
try:
response = await self.client.get(
f"{self.base_url}/download",
params={"course": course, "file": file_id}
)
response.raise_for_status()
self.stats["downloads_started"] += 1
async with aiofiles.open(save_path, 'wb') as f:
async for chunk in response.aiter_bytes():
await f.write(chunk)
self.stats["bytes_downloaded"] += len(chunk)
self.stats["downloads_completed"] += 1
return True
return True
except Exception as e:
print(f"Error downloading {file_id}: {e}")
return False
def save_stats(self):
"""Save download statistics"""
self.stats["end_time"] = datetime.now().isoformat()
stats_file = self.download_dir / "download_stats.json"
with open(stats_file, 'w') as f:
json.dump(self.stats, f, indent=2)
async def download_all(self, max_courses: int = None, max_files: int = None):
"""Download all available files with optional limits"""
try:
courses_processed = 0
files_downloaded = 0
while True:
if max_courses and courses_processed >= max_courses:
print(f"Reached maximum courses limit ({max_courses})")
break
course_data = await self.get_next_course()
if not course_data:
print("No more courses available")
break
course_id = course_data["course_id"]
print(f"\nProcessing course: {course_id}")
courses_processed += 1
course_files = 0
while True:
if max_files and files_downloaded >= max_files:
print(f"Reached maximum files limit ({max_files})")
break
image_data = await self.get_next_image(course_id)
if not image_data:
break
file_id = image_data["file_id"]
print(f"Downloading: {file_id}")
if await self.download_file(course_id, file_id):
files_downloaded += 1
course_files += 1
print(f"Successfully downloaded: {file_id}")
await self.release_image(course_id, file_id)
print(f"Completed course {course_id} - Downloaded {course_files} files")
await self.release_course(course_id)
print(f"\nDownload complete!")
print(f"Processed {courses_processed} courses")
print(f"Downloaded {files_downloaded} files")
print(f"Total bytes: {self.stats['bytes_downloaded']:,}")
finally:
self.save_stats()
await self.close()
async def main():
# Create downloads directory
Path("downloads").mkdir(exist_ok=True)
client = MiddlewareClient()
try:
# Download 2 courses with up to 5 files each as an example
await client.download_all(max_courses=2, max_files=10)
except KeyboardInterrupt:
print("\nDownload interrupted by user")
finally:
await client.close()
if __name__ == "__main__":
asyncio.run(main()) |