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Copy pathqueue.py
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109 lines (84 loc) · 3.38 KB
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from __future__ import annotations
from dataclasses import dataclass, field
from .filter import collapse_one_collinear
from .types import MAX_BUFFER_POINTS, MAX_IN_FLIGHT_FRAMES, LatLng
@dataclass
class QueuedPoint:
seq: int
point: LatLng
sent: bool = True
@dataclass
class OfflineQueue:
"""Staging (no seq) + InFlight (seq, waiting for Ack)."""
max_size: int = MAX_BUFFER_POINTS
staging: list[LatLng] = field(default_factory=list)
inflight: list[QueuedPoint] = field(default_factory=list)
sent_frame_seqs: list[int] = field(default_factory=list)
def __post_init__(self) -> None:
if self.max_size <= 0:
self.max_size = MAX_BUFFER_POINTS
def size(self) -> int:
return len(self.staging) + len(self.inflight)
def staging_len(self) -> int:
return len(self.staging)
def last_assigned_seq(self) -> int:
return self.inflight[-1].seq if self.inflight else 0
def push_staging(self, point: LatLng) -> None:
self.staging.append(point)
self._enforce_cap()
def assign_from_staging(self, n: int, next_seq: int) -> list[QueuedPoint]:
take = min(n, len(self.staging))
out: list[QueuedPoint] = []
for _ in range(take):
point = self.staging.pop(0)
next_seq += 1
q = QueuedPoint(seq=next_seq, point=point, sent=False)
self.inflight.append(q)
out.append(q)
return out
def enqueue(self, seq: int, point: LatLng) -> int:
"""Add an already-numbered InFlight point (tests / live assign)."""
self.inflight.append(QueuedPoint(seq=seq, point=point, sent=True))
before = self.size()
self._enforce_cap()
return min(1, before - self.size()) if before > self.size() else 0
def push_inflight_unsent(self, seq: int, point: LatLng) -> None:
self.inflight.append(QueuedPoint(seq=seq, point=point, sent=False))
self._enforce_cap()
def mark_unsent(self) -> None:
for p in self.inflight:
p.sent = False
self.sent_frame_seqs.clear()
def window_full(self) -> bool:
return len(self.sent_frame_seqs) >= MAX_IN_FLIGHT_FRAMES
def window_remaining(self) -> int:
return max(0, MAX_IN_FLIGHT_FRAMES - len(self.sent_frame_seqs))
def record_frame(self, last_seq: int) -> None:
self.sent_frame_seqs.append(last_seq)
for p in self.inflight:
if p.seq <= last_seq:
p.sent = True
def ack_through(self, ack: int) -> None:
self.inflight = [p for p in self.inflight if p.seq > ack]
self.sent_frame_seqs = [s for s in self.sent_frame_seqs if s > ack]
def peek_all(self) -> list[QueuedPoint]:
return list(self.inflight)
def peek_staging(self) -> list[LatLng]:
return list(self.staging)
def unsent_inflight(self) -> list[QueuedPoint]:
return [p for p in self.inflight if not p.sent]
def clear(self) -> None:
self.staging.clear()
self.inflight.clear()
self.sent_frame_seqs.clear()
def _enforce_cap(self) -> None:
while self.size() > self.max_size:
if collapse_one_collinear(self.staging):
continue
if self.staging:
self.staging.pop(0)
continue
if self.inflight:
self.inflight.pop(0)
else:
break