I couldn't find any official documentation specifying what each parameter to a `sla_miss_callback` callable are. This would be a great addition to know how to properly format the messages sent.
airflow/models/dag.py
from airflow.models.dagrun import DagRun
from airflow.models.param import DagParam, ParamsDict
from airflow.models.taskinstance import Context, TaskInstance, TaskInstanceKey, clear_task_instances
from airflow.security import permissions
from airflow.stats import Stats
from airflow.timetables.base import DagRunInfo, DataInterval, TimeRestriction, Timetable
from airflow.timetables.interval import CronDataIntervalTimetable, DeltaDataIntervalTimetable
from airflow.timetables.simple import NullTimetable, OnceTimetable
from airflow.typing_compat import Literal, RePatternType
from airflow.utils import timezone
from airflow.utils.dag_cycle_tester import check_cycle
from airflow.utils.dates import cron_presets, date_range as utils_date_range
from airflow.utils.file import correct_maybe_zipped
from airflow.utils.helpers import validate_key
from airflow.utils.log.logging_mixin import LoggingMixin
from airflow.utils.session import provide_session
from airflow.utils.sqlalchemy import Interval, UtcDateTime, skip_locked, with_row_locks
from airflow.utils.state import DagRunState, State
from airflow.utils.types import DagRunType, EdgeInfoType
if TYPE_CHECKING:
    from airflow.utils.task_group import TaskGroup
log = logging.getLogger(__name__)
DEFAULT_VIEW_PRESETS = ['tree', 'graph', 'duration', 'gantt', 'landing_times']
ORIENTATION_PRESETS = ['LR', 'TB', 'RL', 'BT']
ScheduleIntervalArgNotSet = type("ScheduleIntervalArgNotSet", (), {})
DagStateChangeCallback = Callable[[Context], None]
ScheduleInterval = Union[str, timedelta, relativedelta]
ScheduleIntervalArg = Union[ScheduleInterval, None, Type[ScheduleIntervalArgNotSet]]
DEFAULT_SCHEDULE_INTERVAL = timedelta(days=1)
class InconsistentDataInterval(AirflowException):