Spaces:
Running
Running
File size: 10,325 Bytes
8f9855d 5f78436 8f9855d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 | from __future__ import annotations
import asyncio
import time
from typing import Annotated, Any, Dict, Optional, Tuple
from urllib.parse import urlparse
import httpx
from fastapi import (
APIRouter,
File,
Form,
HTTPException,
UploadFile,
)
from fastapi.responses import JSONResponse
from pydantic import ValidationError
from app.config import get_settings
from app.core.logger import get_logger
from app.models.schemas import (
ImageConversionParams,
MediaConversionData,
MediaConversionResponse,
MediaFormatsResponse,
MediaImageFormat,
MediaImageUrlRequest,
MediaPDFUrlRequest,
PDFConversionParams,
)
from app.services.media_conversion_service import (
MediaConversionError,
_IMAGE_OUTPUT_FORMATS,
_PDF_OUTPUT_FORMATS,
media_conversion_service,
)
from app.services.media_storage_service import MediaStorageError
router = APIRouter()
_logger = get_logger(__name__)
_settings = get_settings()
_MAX_UPLOAD_BYTES = _settings.max_upload_bytes
# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------
def _ok_response(start: float, data: MediaConversionData) -> MediaConversionResponse:
return MediaConversionResponse(
success=True,
time_ms=round((time.perf_counter() - start) * 1000, 3),
data=data,
)
def _error_response(start: float, exc: Exception) -> JSONResponse:
if isinstance(exc, MediaConversionError):
code, message = exc.status_code, exc.message
elif isinstance(exc, MediaStorageError):
code, message = exc.status_code, exc.message
else:
code, message = 500, f"Media conversion failed: {exc}"
_logger.error("media_conversion_error status=%s error=%s", code, message)
return JSONResponse(
status_code=code,
content={
"success": False,
"message": message,
"time_ms": round((time.perf_counter() - start) * 1000, 3),
},
)
async def _convert_with_timeout(coro) -> Any:
try:
return await asyncio.wait_for(
coro, timeout=_settings.media_conversion_timeout_seconds
)
except asyncio.TimeoutError as exc:
raise MediaConversionError(
f"Conversion timed out after {_settings.media_conversion_timeout_seconds}s.",
status_code=504,
) from exc
def _build_model(model_cls, values: Dict[str, Any]) -> Any:
try:
return model_cls.model_validate(values)
except ValidationError as exc:
first = exc.errors()[0]
raise MediaConversionError(
f"Invalid conversion parameters: {first.get('msg', str(exc))}",
status_code=422,
) from exc
def _read_upload(file: UploadFile) -> bytes:
if file is None or not file.filename:
raise HTTPException(status_code=400, detail={"success": False, "message": "No file provided."})
raw = file.file.read()
if not raw:
raise HTTPException(status_code=422, detail={"success": False, "message": "Uploaded file is empty."})
if len(raw) > _MAX_UPLOAD_BYTES:
raise HTTPException(
status_code=413,
detail={"success": False, "message": f"File exceeds {_settings.max_upload_mb} MB limit."},
)
return raw
async def _read_stream_limited(resp, limit: int) -> bytes:
"""Read a streaming response, aborting with a 413 once it exceeds ``limit`` bytes."""
chunks: list[bytes] = []
total = 0
async for chunk in resp.aiter_bytes():
total += len(chunk)
if total > limit:
raise MediaConversionError(
f"Remote file exceeds {_settings.max_upload_mb} MB limit.", status_code=413
)
chunks.append(chunk)
return b"".join(chunks)
async def _fetch_url(url: str) -> Tuple[bytes, str]:
"""Verify the URL is downloadable, then download it within the upload size cap."""
parsed = urlparse(url)
filename = parsed.path.split("/")[-1] or "media"
async with httpx.AsyncClient(
timeout=30.0,
follow_redirects=True,
headers={"User-Agent": "agentdeck-media-convert/1.0"},
) as client:
# 1) Pre-flight: confirm the URL responds before pulling the body.
declared_length: Optional[int] = None
try:
head_resp = await client.head(url)
if head_resp.status_code in (405, 501): # HEAD not supported -> validate via GET
declared_length = None
else:
head_resp.raise_for_status()
content_length = head_resp.headers.get("content-length")
if content_length and content_length.isdigit():
declared_length = int(content_length)
except httpx.HTTPError as exc:
status = exc.response.status_code if exc.response else "network error"
raise MediaConversionError(
f"URL is not downloadable (HTTP {status}).",
status_code=400,
) from exc
# 2) Reject oversized files up front using the declared Content-Length.
if declared_length is not None and declared_length > _MAX_UPLOAD_BYTES:
raise MediaConversionError(
f"Remote file is {declared_length} bytes, exceeding the "
f"{_settings.max_upload_mb} MB limit.",
status_code=413,
)
# 3) Stream the download with an enforced byte cap (guards against
# servers that omit or misreport Content-Length).
try:
async with client.stream("GET", url) as resp:
resp.raise_for_status()
data = await _read_stream_limited(resp, _MAX_UPLOAD_BYTES)
except httpx.HTTPError as exc:
raise MediaConversionError(
f"Failed to download URL: {exc}", status_code=400
) from exc
if not data:
raise MediaConversionError("Remote file is empty.", status_code=422)
return data, filename
# ---------------------------------------------------------------------------
# Endpoints
# ---------------------------------------------------------------------------
@router.post(
"/media-convert/pdf",
response_model=MediaConversionResponse,
summary="Convert an uploaded PDF to images",
)
async def convert_pdf_file(
file: Annotated[UploadFile, File(description="PDF file to convert")],
format: Annotated[MediaImageFormat, Form(description="Output format (PNG/JPEG/WEBP)")] = MediaImageFormat.PNG,
dpi: int = Form(150, description="Render DPI (72-300)"),
quality: int = Form(85, description="Output quality (1-100)"),
pages: Optional[str] = Form(None, description="Page spec: '1', '1-3', '1,3,5-7'"),
grayscale: bool = Form(False),
transparent_bg: bool = Form(False),
split_page: bool = Form(False),
):
start = time.perf_counter()
raw = _read_upload(file)
try:
params = _build_model(PDFConversionParams, {
"format": format, "dpi": dpi, "quality": quality, "pages": pages,
"grayscale": grayscale, "transparent_bg": transparent_bg, "split_page": split_page,
})
data = await _convert_with_timeout(
media_conversion_service.convert_pdf(raw, params, file.filename or "upload.pdf")
)
except Exception as exc:
return _error_response(start, exc)
return _ok_response(start, data)
@router.post(
"/media-convert/pdf/url",
response_model=MediaConversionResponse,
summary="Convert a PDF from a URL to images",
)
async def convert_pdf_url(body: MediaPDFUrlRequest):
start = time.perf_counter()
try:
raw, filename = await _fetch_url(body.url)
data = await _convert_with_timeout(
media_conversion_service.convert_pdf(raw, body.params, body.url)
)
except Exception as exc:
return _error_response(start, exc)
return _ok_response(start, data)
@router.post(
"/media-convert/image",
response_model=MediaConversionResponse,
summary="Convert an uploaded image to another image format",
)
async def convert_image_file(
file: Annotated[UploadFile, File(description="Image file to convert")],
format: Annotated[MediaImageFormat, Form(description="Target format")] = MediaImageFormat.JPEG,
quality: int = Form(85, description="Output quality (1-100)"),
grayscale: bool = Form(False),
width: Optional[int] = Form(None, description="Resize width"),
height: Optional[int] = Form(None, description="Resize height"),
rotate: float = Form(0.0, description="Rotate clockwise in degrees"),
flip: Optional[str] = Form(None, description="horizontal or vertical"),
):
start = time.perf_counter()
raw = _read_upload(file)
try:
params = _build_model(ImageConversionParams, {
"format": format, "quality": quality, "grayscale": grayscale,
"width": width, "height": height, "rotate": rotate, "flip": flip,
})
data = await _convert_with_timeout(
media_conversion_service.convert_image(raw, file.filename or "image", params)
)
except Exception as exc:
return _error_response(start, exc)
return _ok_response(start, data)
@router.post(
"/media-convert/image/url",
response_model=MediaConversionResponse,
summary="Convert an image from a URL to another image format",
)
async def convert_image_url(body: MediaImageUrlRequest):
start = time.perf_counter()
try:
raw, filename = await _fetch_url(body.url)
data = await _convert_with_timeout(
media_conversion_service.convert_image(raw, body.url, body.params)
)
except Exception as exc:
return _error_response(start, exc)
return _ok_response(start, data)
@router.get(
"/media-convert/formats",
response_model=MediaFormatsResponse,
summary="List supported media conversions",
)
async def list_formats():
return MediaFormatsResponse(
success=True,
pdf_to_image=sorted(_PDF_OUTPUT_FORMATS),
image_to_image=sorted(_IMAGE_OUTPUT_FORMATS),
storage_enabled=_settings.supabase_upload_enabled,
signed_url_ttl_seconds=_settings.supabase_signed_url_ttl_seconds,
)
|