File size: 10,571 Bytes
957256e 5a42256 957256e 26cd782 957256e |
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 |
"""
StackNet API Client
Handles all communication with the StackNettask network.
SSE parsing and progress tracking are handled internally.
"""
import json
import tempfile
import os
from typing import AsyncGenerator, Optional, Any, Callable
from dataclasses import dataclass
from enum import Enum
import httpx
from ..config import config
class MediaAction(str, Enum):
"""Supported media orchestration actions."""
GENERATE_MUSIC = "generate_music"
CREATE_COVER = "create_cover"
EXTRACT_STEMS = "extract_stems"
ANALYZE_VISUAL = "analyze_visual"
DESCRIBE_VIDEO = "describe_video"
CREATE_COMPOSITE = "create_composite"
@dataclass
class TaskProgress:
"""Progress update from a running task."""
progress: float # 0.0 to 1.0
status: str
message: str
@dataclass
class TaskResult:
"""Final result from a completed task."""
success: bool
data: dict
error: Optional[str] = None
class StackNetClient:
"""
Client for StackNet task network API.
All SSE parsing and polling is handled internally.
Consumers receive clean progress updates and final results.
"""
def __init__(
self,
base_url: Optional[str] = None,
api_key: Optional[str] = None,
timeout: float = 300.0
):
self.base_url = base_url or config.stacknet_url
self.api_key = api_key # Must be provided from UI, no env fallback
self.timeout = timeout
self._temp_dir = tempfile.mkdtemp(prefix="stacknet_")
async def submit_tool_task(
self,
tool_name: str,
parameters: dict,
server_name: str = "geoff",
on_progress: Optional[Callable[[float, str], None]] = None
) -> TaskResult:
"""
Submit an MCP tool task and wait for completion.
Args:
tool_name: The tool to invoke (e.g., generate_image_5)
parameters: Tool parameters
server_name: MCP server name (default: geoff)
on_progress: Callback for progress updates
Returns:
TaskResult with success status and output data
"""
payload = {
"type": "mcp-tool",
"serverName": server_name,
"toolName": tool_name,
"stream": True,
"parameters": parameters
}
headers = {"Content-Type": "application/json"}
if self.api_key:
auth_header = self.api_key if self.api_key.startswith("Bearer ") else f"Bearer {self.api_key}"
headers["Authorization"] = auth_header
async with httpx.AsyncClient(timeout=self.timeout) as client:
try:
async with client.stream(
"POST",
f"{self.base_url}/tasks",
json=payload,
headers=headers
) as response:
if response.status_code != 200:
error_text = await response.aread()
return TaskResult(
success=False,
data={},
error=f"API request failed ({response.status_code}): {error_text.decode()[:200]}"
)
return await self._process_sse_stream(response, on_progress)
except httpx.TimeoutException:
return TaskResult(
success=False,
data={},
error="Request timed out. The operation took too long."
)
except httpx.RequestError as e:
return TaskResult(
success=False,
data={},
error=f"Network error: {str(e)}"
)
async def submit_media_task(
self,
action: MediaAction,
prompt: Optional[str] = None,
media_url: Optional[str] = None,
audio_url: Optional[str] = None,
video_url: Optional[str] = None,
options: Optional[dict] = None,
on_progress: Optional[Callable[[float, str], None]] = None
) -> TaskResult:
"""
Submit a media orchestration task and wait for completion.
Args:
action: The media action to perform
prompt: Text prompt for generation
media_url: URL for image input
audio_url: URL for audio input
video_url: URL for video input
options: Additional options (tags, title, etc.)
on_progress: Callback for progress updates (progress: 0-1, message: str)
Returns:
TaskResult with success status and output data
"""
payload = {
"type": config.TASK_TYPE_MEDIA,
"action": action.value,
"stream": True,
}
if prompt:
payload["prompt"] = prompt
if media_url:
payload["mediaUrl"] = media_url
if audio_url:
payload["audioUrl"] = audio_url
if video_url:
payload["videoUrl"] = video_url
if options:
payload["options"] = options
headers = {"Content-Type": "application/json"}
if self.api_key:
auth_header = self.api_key if self.api_key.startswith("Bearer ") else f"Bearer {self.api_key}"
headers["Authorization"] = auth_header
async with httpx.AsyncClient(timeout=self.timeout) as client:
try:
async with client.stream(
"POST",
f"{self.base_url}/tasks",
json=payload,
headers=headers
) as response:
if response.status_code != 200:
error_text = await response.aread()
return TaskResult(
success=False,
data={},
error=f"API request failed ({response.status_code}): {error_text.decode()[:200]}"
)
return await self._process_sse_stream(response, on_progress)
except httpx.TimeoutException:
return TaskResult(
success=False,
data={},
error="Request timed out. The operation took too long."
)
except httpx.RequestError as e:
return TaskResult(
success=False,
data={},
error=f"Network error: {str(e)}"
)
async def _process_sse_stream(
self,
response: httpx.Response,
on_progress: Optional[Callable[[float, str], None]] = None
) -> TaskResult:
"""Process SSE stream and extract final result."""
buffer = ""
final_result: Optional[dict] = None
error_message: Optional[str] = None
async for chunk in response.aiter_text():
buffer += chunk
lines = buffer.split("\n")
buffer = lines.pop() # Keep incomplete line
for line in lines:
if not line.startswith("data: "):
continue
raw_data = line[6:].strip()
# Skip markers
if raw_data == "[DONE]" or not raw_data:
continue
try:
event = json.loads(raw_data)
event_type = event.get("type", "")
event_data = event.get("data", event)
if event_type == "progress":
if on_progress:
progress = self._calculate_progress(event_data)
message = event_data.get("message", "Processing...")
on_progress(progress, message)
elif event_type == "result":
final_result = event_data.get("output", event_data)
elif event_type == "error":
error_message = event_data.get("message", "Unknown error occurred")
elif event_type == "complete":
# Task completed successfully
pass
except json.JSONDecodeError:
continue
# Process any remaining buffer
if buffer.strip() and buffer.startswith("data: "):
raw_data = buffer[6:].strip()
if raw_data and raw_data != "[DONE]":
try:
event = json.loads(raw_data)
if event.get("type") == "result":
final_result = event.get("data", {}).get("output", event.get("data", {}))
except json.JSONDecodeError:
pass
if error_message:
return TaskResult(success=False, data={}, error=error_message)
if final_result:
return TaskResult(success=True, data=final_result)
return TaskResult(
success=False,
data={},
error="No result received from the API"
)
def _calculate_progress(self, data: dict) -> float:
"""Calculate normalized progress (0.0 to 1.0)."""
if not data:
return 0.5
status = data.get("status", "")
if status == "completed":
return 1.0
if status == "polling":
attempt = data.get("attempt", 1)
max_attempts = data.get("maxAttempts", 30)
return 0.2 + (attempt / max_attempts) * 0.6
if status == "processing":
return 0.5
if status == "submitted":
return 0.1
return 0.5
async def download_file(self, url: str, filename: Optional[str] = None) -> str:
"""Download a file to the temp directory and return local path."""
if not filename:
filename = url.split("/")[-1].split("?")[0]
if not filename:
filename = "download"
local_path = os.path.join(self._temp_dir, filename)
async with httpx.AsyncClient(timeout=60.0) as client:
response = await client.get(url)
response.raise_for_status()
with open(local_path, "wb") as f:
f.write(response.content)
return local_path
def cleanup(self):
"""Clean up temporary files."""
import shutil
if os.path.exists(self._temp_dir):
shutil.rmtree(self._temp_dir, ignore_errors=True)
|