File size: 10,090 Bytes
6242a59 |
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 |
from enum import Enum
from datetime import datetime
from typing import Optional, Union
from sqlalchemy import (
Column,
String,
Text,
Integer,
DateTime,
LargeBinary,
Boolean,
text,
func,
)
from sqlalchemy.orm import Session
from .base import BaseTableManager, Base
from ..models import TaskModel
class TaskStatus(str, Enum):
PENDING = "pending"
RUNNING = "running"
DONE = "done"
FAILED = "failed"
INTERRUPTED = "interrupted"
class Task(TaskModel):
script_params: bytes = None
params: str
def __init__(self, priority=int(datetime.utcnow().timestamp() * 1000), **kwargs):
super().__init__(priority=priority, **kwargs)
class Config(TaskModel.__config__):
exclude = ["script_params"]
@staticmethod
def from_table(table: "TaskTable"):
return Task(
id=table.id,
api_task_id=table.api_task_id,
name=table.name,
type=table.type,
params=table.params,
priority=table.priority,
status=table.status,
result=table.result,
bookmarked=table.bookmarked,
created_at=table.created_at,
updated_at=table.updated_at,
)
def to_table(self):
return TaskTable(
id=self.id,
api_task_id=self.api_task_id,
name=self.name,
type=self.type,
params=self.params,
script_params=b"",
priority=self.priority,
status=self.status,
result=self.result,
bookmarked=self.bookmarked,
)
class TaskTable(Base):
__tablename__ = "task"
id = Column(String(64), primary_key=True)
api_task_id = Column(String(64), nullable=True)
name = Column(String(255), nullable=True)
type = Column(String(20), nullable=False) # txt2img or img2txt
params = Column(Text, nullable=False) # task args
script_params = Column(LargeBinary, nullable=False) # script args
priority = Column(Integer, nullable=False)
status = Column(
String(20), nullable=False, default="pending"
) # pending, running, done, failed
result = Column(Text) # task result
bookmarked = Column(Boolean, nullable=True, default=False)
created_at = Column(
DateTime,
nullable=False,
server_default=text("(datetime('now'))"),
)
updated_at = Column(
DateTime,
nullable=False,
server_default=text("(datetime('now'))"),
onupdate=text("(datetime('now'))"),
)
def __repr__(self):
return f"Task(id={self.id!r}, type={self.type!r}, params={self.params!r}, status={self.status!r}, created_at={self.created_at!r})"
class TaskManager(BaseTableManager):
def get_task(self, id: str) -> Union[TaskTable, None]:
session = Session(self.engine)
try:
task = session.get(TaskTable, id)
return Task.from_table(task) if task else None
except Exception as e:
print(f"Exception getting task from database: {e}")
raise e
finally:
session.close()
def get_tasks(
self,
type: str = None,
status: Union[str, list[str]] = None,
bookmarked: bool = None,
api_task_id: str = None,
limit: int = None,
offset: int = None,
order: str = "asc",
) -> list[TaskTable]:
session = Session(self.engine)
try:
query = session.query(TaskTable)
if type:
query = query.filter(TaskTable.type == type)
if status is not None:
if isinstance(status, list):
query = query.filter(TaskTable.status.in_(status))
else:
query = query.filter(TaskTable.status == status)
if api_task_id:
query = query.filter(TaskTable.api_task_id == api_task_id)
if bookmarked == True:
query = query.filter(TaskTable.bookmarked == bookmarked)
else:
query = query.order_by(TaskTable.bookmarked.asc())
query = query.order_by(
TaskTable.priority.asc()
if order == "asc"
else TaskTable.priority.desc()
)
if limit:
query = query.limit(limit)
if offset:
query = query.offset(offset)
all = query.all()
return [Task.from_table(t) for t in all]
except Exception as e:
print(f"Exception getting tasks from database: {e}")
raise e
finally:
session.close()
def count_tasks(
self,
type: str = None,
status: Union[str, list[str]] = None,
api_task_id: str = None,
) -> int:
session = Session(self.engine)
try:
query = session.query(TaskTable)
if type:
query = query.filter(TaskTable.type == type)
if status is not None:
if isinstance(status, list):
query = query.filter(TaskTable.status.in_(status))
else:
query = query.filter(TaskTable.status == status)
if api_task_id:
query = query.filter(TaskTable.api_task_id == api_task_id)
return query.count()
except Exception as e:
print(f"Exception counting tasks from database: {e}")
raise e
finally:
session.close()
def add_task(self, task: Task) -> TaskTable:
session = Session(self.engine)
try:
result = task.to_table()
session.add(result)
session.commit()
return result
except Exception as e:
print(f"Exception adding task to database: {e}")
raise e
finally:
session.close()
def update_task(
self,
id: str,
name: str = None,
status: str = None,
result: str = None,
bookmarked: bool = None,
) -> TaskTable:
session = Session(self.engine)
try:
task = session.get(TaskTable, id)
if task is None:
raise Exception(f"Task with id {id} not found")
if name is not None:
task.name = name
if status is not None:
task.status = status
if result is not None:
task.result = result
if bookmarked is not None:
task.bookmarked = bookmarked
session.commit()
return task
except Exception as e:
print(f"Exception updating task in database: {e}")
raise e
finally:
session.close()
def prioritize_task(self, id: str, priority: int) -> TaskTable:
"""0 means move to top, -1 means move to bottom, otherwise set the exact priority"""
session = Session(self.engine)
try:
result = session.get(TaskTable, id)
if result:
if priority == 0:
result.priority = self.__get_min_priority(status=TaskStatus.PENDING) - 1
elif priority == -1:
result.priority = int(datetime.utcnow().timestamp() * 1000)
else:
self.__move_tasks_down(priority)
session.execute(text("SELECT 1"))
result.priority = priority
session.commit()
return result
else:
raise Exception(f"Task with id {id} not found")
except Exception as e:
print(f"Exception updating task in database: {e}")
raise e
finally:
session.close()
def delete_task(self, id: str):
session = Session(self.engine)
try:
result = session.get(TaskTable, id)
if result:
session.delete(result)
session.commit()
else:
raise Exception(f"Task with id {id} not found")
except Exception as e:
print(f"Exception deleting task from database: {e}")
raise e
finally:
session.close()
def delete_tasks_before(self, before: datetime, all: bool = False):
session = Session(self.engine)
try:
query = session.query(TaskTable).filter(TaskTable.created_at < before)
if not all:
query = query.filter(
TaskTable.status.in_(
[TaskStatus.DONE, TaskStatus.FAILED, TaskStatus.INTERRUPTED]
)
).filter(TaskTable.bookmarked == False)
deleted_rows = query.delete()
session.commit()
return deleted_rows
except Exception as e:
print(f"Exception deleting tasks from database: {e}")
raise e
finally:
session.close()
def __get_min_priority(self, status: str = None) -> int:
session = Session(self.engine)
try:
query = session.query(func.min(TaskTable.priority))
if status is not None:
query = query.filter(TaskTable.status == status)
min_priority = query.scalar()
return min_priority if min_priority else 0
except Exception as e:
print(f"Exception getting min priority from database: {e}")
raise e
finally:
session.close()
def __move_tasks_down(self, priority: int):
session = Session(self.engine)
try:
session.query(TaskTable).filter(TaskTable.priority >= priority).update(
{TaskTable.priority: TaskTable.priority + 1}
)
session.commit()
except Exception as e:
print(f"Exception moving tasks down in database: {e}")
raise e
finally:
session.close()
|