File size: 9,050 Bytes
cd0ff97 4576e13 cd0ff97 1f36bcf 3921761 cd0ff97 3921761 cd0ff97 1f36bcf 3921761 cd0ff97 4576e13 cd0ff97 3921761 cd0ff97 3921761 cd0ff97 1f36bcf 3921761 cd0ff97 1f36bcf 3921761 cd0ff97 | 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 | import base64
import os
import time
from pathlib import Path
from typing import Dict, Iterable, List, Optional
from urllib.parse import urlparse
import requests
from backend.synthesis_catalog import MODAL_BACKEND
from backend.types import VoiceConfig
class ModalSynthesisClient:
def __init__(
self,
*,
base_url: Optional[str],
auth_token: Optional[str] = None,
timeout_seconds: float = 300.0,
poll_interval_seconds: float = 3.0,
max_status_retries: int = 4,
) -> None:
self.base_url = base_url.rstrip("/") if base_url else None
self.auth_token = auth_token
self.timeout_seconds = timeout_seconds
self.poll_interval_seconds = poll_interval_seconds
self.max_status_retries = max_status_retries
@classmethod
def from_env(cls) -> "ModalSynthesisClient":
return cls(
base_url=os.getenv("SCRIPTORIUM_MODAL_BASE_URL"),
auth_token=os.getenv("SCRIPTORIUM_MODAL_AUTH_TOKEN"),
timeout_seconds=float(os.getenv("SCRIPTORIUM_MODAL_TIMEOUT_SECONDS", "300")),
poll_interval_seconds=float(os.getenv("SCRIPTORIUM_MODAL_POLL_INTERVAL_SECONDS", "3")),
max_status_retries=int(os.getenv("SCRIPTORIUM_MODAL_STATUS_RETRIES", "4")),
)
def is_configured(self) -> bool:
return bool(self.base_url)
def configuration_warning(self) -> Optional[str]:
if not self.base_url:
return None
parsed = urlparse(self.base_url)
host = (parsed.netloc or "").lower()
path = parsed.path or ""
if host == "modal.com" and path.startswith("/apps/"):
return (
"SCRIPTORIUM_MODAL_BASE_URL points to a Modal dashboard URL, not a callable web endpoint. "
"Use the deployed modal.run base URL instead, for example "
"'https://<your-app>.modal.run'."
)
return None
def generate_preview(
self,
*,
text: str,
output_path: Path,
voice_config: VoiceConfig,
diffusion_steps: int,
speed: float,
) -> Dict[str, object]:
payload = {
"text": text,
"voice_config": voice_config.to_dict(),
"diffusion_steps": diffusion_steps,
"speed": speed,
}
data = self._post_json("/preview", payload)
output_path.parent.mkdir(parents=True, exist_ok=True)
output_path.write_bytes(base64.b64decode(data["audio_base64"]))
return {
"duration_seconds": int(data.get("duration_seconds", 0)),
"sample_rate": int(data.get("sample_rate", 24000)),
"backend": MODAL_BACKEND,
"model": voice_config.model,
}
def submit_render(
self,
*,
session_id: str,
book: Dict[str, object],
chapters: List[Dict[str, object]],
voice_config: VoiceConfig,
diffusion_steps: int,
speed: float,
) -> str:
payload = {
"session_id": session_id,
"book": book,
"chapters": chapters,
"voice_config": voice_config.to_dict(),
"diffusion_steps": diffusion_steps,
"speed": speed,
}
data = self._post_json("/renders", payload)
job_id = data.get("job_id")
if not job_id:
raise ValueError("Modal render submission did not return a job id")
return str(job_id)
def render(
self,
*,
session_id: str,
job_id: str,
render_dir: Path,
voice_config: VoiceConfig,
) -> Iterable[Dict[str, object]]:
cursor = 0
consecutive_status_failures = 0
while True:
try:
data = self._get_json(f"/renders/{job_id}", params={"cursor": cursor})
consecutive_status_failures = 0
except ValueError as exc:
consecutive_status_failures += 1
if consecutive_status_failures > self.max_status_retries:
raise
yield {
"type": "log",
"session_id": session_id,
"backend": MODAL_BACKEND,
"model": voice_config.model,
"message": (
f"Transient Modal status error ({consecutive_status_failures}/{self.max_status_retries}): {exc}"
),
}
time.sleep(self.poll_interval_seconds)
continue
events = list(data.get("events") or [])
cursor += len(events)
for event in events:
yield self._materialize_event(
session_id=session_id,
render_dir=render_dir,
voice_config=voice_config,
event=event,
)
status = str(data.get("status", "pending"))
if status in {"completed", "failed", "cancelled"}:
break
time.sleep(self.poll_interval_seconds)
def cancel_render(self, job_id: str) -> Dict[str, object]:
data = self._post_json(f"/renders/{job_id}/cancel", {})
return {
"type": data.get("type", "cancelled"),
"job_id": job_id,
"backend": MODAL_BACKEND,
}
def _materialize_event(
self,
*,
session_id: str,
render_dir: Path,
voice_config: VoiceConfig,
event: Dict[str, object],
) -> Dict[str, object]:
materialized = dict(event)
materialized.setdefault("session_id", session_id)
materialized.setdefault("backend", MODAL_BACKEND)
materialized.setdefault("model", voice_config.model)
artifact_url = materialized.get("artifact_url")
filename = materialized.get("filename")
if artifact_url and filename:
output_path = render_dir / str(filename)
output_path.parent.mkdir(parents=True, exist_ok=True)
response = requests.get(
self._absolute_url(str(artifact_url)),
headers=self._headers(),
timeout=self.timeout_seconds,
)
response.raise_for_status()
output_path.write_bytes(response.content)
materialized["output_path"] = str(output_path)
return materialized
def _post_json(self, path: str, payload: Dict[str, object]) -> Dict[str, object]:
self._ensure_configured()
try:
response = requests.post(
self._absolute_url(path),
json=payload,
headers=self._headers(),
timeout=self.timeout_seconds,
)
response.raise_for_status()
return response.json()
except requests.Timeout as exc:
raise ValueError(
"Modal request timed out. The remote worker may still be cold-starting or loading models. "
"Try again, or increase SCRIPTORIUM_MODAL_TIMEOUT_SECONDS."
) from exc
except requests.RequestException as exc:
detail = ""
response = getattr(exc, "response", None)
if response is not None and response.text:
detail = f" | response={response.text[:400]}"
raise ValueError(f"Modal request failed: {exc}{detail}") from exc
def _get_json(self, path: str, *, params: Dict[str, object]) -> Dict[str, object]:
self._ensure_configured()
try:
response = requests.get(
self._absolute_url(path),
params=params,
headers=self._headers(),
timeout=self.timeout_seconds,
)
response.raise_for_status()
return response.json()
except requests.Timeout as exc:
raise ValueError(
"Modal request timed out. The remote worker may still be cold-starting or loading models. "
"Try again, or increase SCRIPTORIUM_MODAL_TIMEOUT_SECONDS."
) from exc
except requests.RequestException as exc:
detail = ""
response = getattr(exc, "response", None)
if response is not None and response.text:
detail = f" | response={response.text[:400]}"
raise ValueError(f"Modal request failed: {exc}{detail}") from exc
def _absolute_url(self, path: str) -> str:
if path.startswith("http://") or path.startswith("https://"):
return path
return f"{self.base_url}{path}"
def _headers(self) -> Dict[str, str]:
headers = {"Accept": "application/json"}
if self.auth_token:
headers["Authorization"] = f"Bearer {self.auth_token}"
return headers
def _ensure_configured(self) -> None:
if not self.base_url:
raise ValueError("Modal backend is not configured. Set SCRIPTORIUM_MODAL_BASE_URL.")
|