b31fdd023a
Product / UI / CLI / docs rebrand. Internal package, repo, and on-disk dir names stay 'cloud_sync' / 'cloud-sync' / '.cloud-sync/' to avoid breaking existing installs; a future commit can do the file-system rename when the cost is worth paying. User-facing changes: CLI prog name: cloud-sync -> instance-sync CLI description: cloud-svc URL -> Timemachine Network endpoint Dialog title: CLOUD SYNC -> INSTANCE SYNC Dialog title: CLOUD CONFLICT -> INSTANCE CONFLICT Dialog title: CONNECT CLOUD SAVE -> CONNECT TO THE NETWORK Card label: Cloud Save -> Remote Save Skip button: Skip cloud sync -> Skip instance sync Body copy: 'the cloud' -> 'the Timemachine Network' Window titles: Cloud sync — ... -> Instance sync — ... Log prefix: cloud-sync: -> instance-sync: Error prose: 'cloud-sync token' -> 'instance-sync token' Backend changes: restic --host tag: cloud-sync -> instance-sync State.host_tag dflt: cloud-sync -> instance-sync (Existing snapshots with the old tag still pull fine; we use 'latest'.) Drop tkinter fallback: ui.py now offers Qt OR Headless. tkinter is unnecessary given we already maintain Qt + headless; one less code path to keep styled, smaller pyz. make_progress() picks Qt first, falls through to HeadlessProgress on ImportError with a stderr hint to 'pip install PySide6'. README: rebrand title + prose; note repo/dir rename deferred; call out the PySide6 install step. Conflict/login dialogs are now Qt-only; without Qt, conflict aborts (defensive) and login tells the user to paste the token manually. 52 tests green; no test-file label changes needed since they only exercise internal APIs.
85 lines
2.5 KiB
Python
85 lines
2.5 KiB
Python
"""Per-instance sync state.
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Tracks the snapshot id this pack was last synced to and when. Lives at
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``<pack-folder>/.cloud-sync/state.json`` (mode 600).
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Purpose: divergence detection. On ``pull``, if the remote latest id
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differs from ``last_pulled_snapshot_id`` AND any in-scope local file
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has mtime > ``last_pulled_at``, the local and remote diverged from a
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common ancestor — surface the conflict dialog.
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"""
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from __future__ import annotations
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import json
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from dataclasses import dataclass
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from datetime import datetime, timezone
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from pathlib import Path
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SCHEMA_VERSION = 1
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@dataclass(frozen=True)
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class State:
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last_pulled_snapshot_id: str
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last_pulled_at: datetime
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host_tag: str = "instance-sync"
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def state_path(pack_folder: Path) -> Path:
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return pack_folder / ".cloud-sync" / "state.json"
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def read(pack_folder: Path) -> State | None:
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"""Return parsed state or None if file missing / unreadable / wrong schema."""
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p = state_path(pack_folder)
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if not p.exists():
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return None
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try:
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data = json.loads(p.read_text(encoding="utf-8"))
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except (OSError, json.JSONDecodeError):
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return None
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if data.get("schema") != SCHEMA_VERSION:
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return None
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try:
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return State(
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last_pulled_snapshot_id=data["last_pulled_snapshot_id"],
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last_pulled_at=_parse_iso(data["last_pulled_at"]),
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host_tag=data.get("host_tag", "instance-sync"),
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)
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except (KeyError, ValueError):
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return None
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def write(pack_folder: Path, state: State) -> None:
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"""Persist state. Creates parent dir + sets mode 600."""
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p = state_path(pack_folder)
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p.parent.mkdir(parents=True, exist_ok=True)
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payload = {
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"schema": SCHEMA_VERSION,
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"last_pulled_snapshot_id": state.last_pulled_snapshot_id,
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"last_pulled_at": state.last_pulled_at.astimezone(timezone.utc)
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.isoformat()
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.replace("+00:00", "Z"),
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"host_tag": state.host_tag,
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}
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p.write_text(json.dumps(payload, indent=2) + "\n", encoding="utf-8")
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p.chmod(0o600)
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def clear(pack_folder: Path) -> None:
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"""Remove state.json if present. Used when remote has zero snapshots."""
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p = state_path(pack_folder)
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p.unlink(missing_ok=True)
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def _parse_iso(s: str) -> datetime:
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"""Parse ISO-8601 with trailing Z or +HH:MM, return tz-aware UTC."""
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if s.endswith("Z"):
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s = s[:-1] + "+00:00"
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dt = datetime.fromisoformat(s)
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if dt.tzinfo is None:
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dt = dt.replace(tzinfo=timezone.utc)
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return dt.astimezone(timezone.utc)
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