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Apply sequential deltas from Nostr

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thePR0M3TH3AN
2025-07-24 19:41:35 -04:00
parent 5850b68c9a
commit 24a606fb70
3 changed files with 125 additions and 12 deletions
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3
src/nostr/client.py
View File

@@ -594,6 +594,9 @@ class NostrClient:
)
timeout = timedelta(seconds=10)
events = (await self.client.fetch_events(f, timeout)).to_vec()
events.sort(
key=lambda ev: getattr(ev, "created_at", getattr(ev, "timestamp", 0))
)
deltas: list[bytes] = []
for ev in events:
deltas.append(base64.b64decode(ev.content().encode("utf-8")))

38
src/seedpass/core/manager.py
View File

@@ -1175,17 +1175,26 @@ class PasswordManager:
return
manifest, chunks = result
encrypted = gzip.decompress(b"".join(chunks))
if manifest.delta_since:
version = int(manifest.delta_since)
deltas = await self.nostr_client.fetch_deltas_since(version)
if deltas:
encrypted = deltas[-1]
current = self.vault.get_encrypted_index()
updated = False
if current != encrypted:
if self.vault.decrypt_and_save_index_from_nostr(
encrypted, strict=False
):
logger.info("Local database synchronized from Nostr.")
updated = True
current = encrypted
if manifest.delta_since:
version = int(manifest.delta_since)
deltas = await self.nostr_client.fetch_deltas_since(version)
for delta in deltas:
if current != delta:
if self.vault.decrypt_and_save_index_from_nostr(
delta, strict=False
):
updated = True
current = delta
if updated:
logger.info("Local database synchronized from Nostr.")
except Exception as e:
logger.warning(
"Unable to sync index from Nostr relays %s: %s",
@@ -1304,17 +1313,22 @@ class PasswordManager:
if result:
manifest, chunks = result
encrypted = gzip.decompress(b"".join(chunks))
if manifest.delta_since:
version = int(manifest.delta_since)
deltas = await self.nostr_client.fetch_deltas_since(version)
if deltas:
encrypted = deltas[-1]
success = self.vault.decrypt_and_save_index_from_nostr(
encrypted, strict=False
)
if success:
logger.info("Initialized local database from Nostr.")
have_data = True
current = encrypted
if manifest.delta_since:
version = int(manifest.delta_since)
deltas = await self.nostr_client.fetch_deltas_since(version)
for delta in deltas:
if current != delta:
if self.vault.decrypt_and_save_index_from_nostr(
delta, strict=False
):
current = delta
logger.info("Initialized local database from Nostr.")
except Exception as e: # pragma: no cover - network errors
logger.warning(f"Unable to sync index from Nostr: {e}")
finally:

96
src/tests/test_multiple_deltas_sync.py Normal file
View File

@@ -0,0 +1,96 @@
import asyncio
from pathlib import Path
from tempfile import TemporaryDirectory
from helpers import create_vault, dummy_nostr_client
from seedpass.core.entry_management import EntryManager
from seedpass.core.backup import BackupManager
from seedpass.core.config_manager import ConfigManager
from seedpass.core.manager import PasswordManager, EncryptionMode
def _init_pm(dir_path: Path, client) -> PasswordManager:
vault, enc_mgr = create_vault(dir_path)
cfg_mgr = ConfigManager(vault, dir_path)
backup_mgr = BackupManager(dir_path, cfg_mgr)
entry_mgr = EntryManager(vault, backup_mgr)
pm = PasswordManager.__new__(PasswordManager)
pm.encryption_mode = EncryptionMode.SEED_ONLY
pm.encryption_manager = enc_mgr
pm.vault = vault
pm.entry_manager = entry_mgr
pm.backup_manager = backup_mgr
pm.config_manager = cfg_mgr
pm.nostr_client = client
pm.fingerprint_dir = dir_path
pm.is_dirty = False
return pm
def test_sync_applies_multiple_deltas(dummy_nostr_client):
client, relay = dummy_nostr_client
with TemporaryDirectory() as tmpdir:
base = Path(tmpdir)
dir_a = base / "A"
dir_b = base / "B"
dir_a.mkdir()
dir_b.mkdir()
pm_a = _init_pm(dir_a, client)
pm_b = _init_pm(dir_b, client)
# Initial snapshot from manager A
pm_a.entry_manager.add_entry("site1", 12)
pm_a.sync_vault()
manifest_id = relay.manifests[-1].tags[0]
# Manager B downloads snapshot
assert pm_b.attempt_initial_sync() is True
# Two deltas published sequentially
pm_a.entry_manager.add_entry("site2", 12)
delta1 = pm_a.vault.get_encrypted_index() or b""
asyncio.run(client.publish_delta(delta1, manifest_id))
pm_a.entry_manager.add_entry("site3", 12)
delta2 = pm_a.vault.get_encrypted_index() or b""
asyncio.run(client.publish_delta(delta2, manifest_id))
# B syncs and should apply both deltas
pm_b.sync_index_from_nostr()
pm_b.entry_manager.clear_cache()
labels = [e[1] for e in pm_b.entry_manager.list_entries()]
assert sorted(labels) == ["site1", "site2", "site3"]
def test_initial_sync_applies_multiple_deltas(dummy_nostr_client):
client, relay = dummy_nostr_client
with TemporaryDirectory() as tmpdir:
base = Path(tmpdir)
dir_a = base / "A"
dir_b = base / "B"
dir_a.mkdir()
dir_b.mkdir()
pm_a = _init_pm(dir_a, client)
pm_b = _init_pm(dir_b, client)
pm_a.entry_manager.add_entry("site1", 12)
pm_a.sync_vault()
manifest_id = relay.manifests[-1].tags[0]
pm_a.entry_manager.add_entry("site2", 12)
delta1 = pm_a.vault.get_encrypted_index() or b""
asyncio.run(client.publish_delta(delta1, manifest_id))
pm_a.entry_manager.add_entry("site3", 12)
delta2 = pm_a.vault.get_encrypted_index() or b""
asyncio.run(client.publish_delta(delta2, manifest_id))
# Initial sync after both deltas published
assert pm_b.attempt_initial_sync() is True
pm_b.entry_manager.clear_cache()
labels = [e[1] for e in pm_b.entry_manager.list_entries()]
assert sorted(labels) == ["site1", "site2", "site3"]