I'm noticing duplicate notes in the database, which might happen when
the ingester and writer get spammed with the same note rapidly. Add a
sanity check during the write so that we only ever write a note once.
Fixes: 1cf898e0b2 ("ndb: update nostrdb")
Changelog-Fixed: Fix duplicate notes getting written to nostrdb
Signed-off-by: William Casarin <jb55@jb55.com>
Due to the way the range queries work for newest-first searches, we can
have a situation where the MDB_SET_RANGE gets placed on either the
correct place or just after the correct place. To position the cursor
correctly, we jump back one if the search result prefix doesn't match.
Signed-off-by: William Casarin <jb55@jb55.com>
This allows users of nostrdb to selectively filter notes of any kind during
ingest.
Contact lists too big? Create a filter to reject them.
You only care about notes with specific kinds? Reject everything else.
Damus will use this for rejecting large events that might take up too
much space for storage, such as contact lists.
This commit also switched to ndb_config for configuring nostrdb, because
the arguments to ndb_init were getting out of hand.
Changelog-Added: Added ingest filter setting
Changelog-Changed: Switch to ndb_config for per-session ndb settings
Signed-off-by: William Casarin <jb55@jb55.com>
This changes the search algorithm to be much smarter and more efficient
at searching phrases.
It is also much simpler, using less intermediate data structures.
Signed-off-by: William Casarin <jb55@jb55.com>
Our word parser gets stuck on some notes with utf8 chars. Make sure we
are always advancing so we don't get stuck.
Signed-off-by: William Casarin <jb55@jb55.com>
This patch sets the stage for phrase searching. It collects data into
result sets based on words and the word's associated key. We can use
this data to select the best search results based on adjacent
word_indices.
Signed-off-by: William Casarin <jb55@jb55.com>
We will be writing more indices so I'm trying to clean this up a bit
before this function gets too messy
Signed-off-by: William Casarin <jb55@jb55.com>
custom kind+timestamp comparison function. This is used by lmdb to
perform b+ tree searches over the kind+timestamp index.
Signed-off-by: William Casarin <jb55@jb55.com>
Without this, we could accidently match `pr` for `#p` filters
Fixes: 30ed801285dd ("filters: add initial filter interface")
Signed-off-by: William Casarin <jb55@jb55.com>
This adds a way to construct filters and match them against notes. This
will be used by our query interface in the future.
Signed-off-by: William Casarin <jb55@jb55.com>
This includes the new profile fetched_at logic and reaction stats.
When receiving new profiles, nostrdb will record when it was last
received in a new database. This database is a mapping from Pubkey to
timestamp.
You can manually read/write to this table using:
ndb_read_last_profile_fetch
ndb_write_last_profile_fetch
This patch also includes the new reaction counting metadata table. It is
not used yet (but reactions are still counted!)
Changelog-Added: Added reaction counters to nostrdb
Changelog-Added: Record when profile is last fetched in nostrdb
Timestamped IDs were not being initialized properly when writing profile
indices. This means that every profile was indexed with timestamp 0.
derp. Fix this!
Changelog-Fixed: Fix profiles not updating
William Casarin
hakkadaikon
Daniel D‘Aquino