Last note per pubkey algo feed #621
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This function creates filters for the base our first algo in Damus:
Called "last N note per pubkey". I don't have a better name for it.
This function generates a query in the form:
[
{"authors": ["author_a"], "limit": 1, "kinds": [1]
, {"authors": ["author_b"], "limit": 1, "kinds": [1]
, {"authors": ["author_c"], "limit": 1, "kinds": [1]
, {"authors": ["author_c"], "limit": 1, "kinds": [1]
...
]
Due to an unfortunate restriction currently in nostrdb and strfry, we
can only do about 16 to 20 of these at any given time. I have made
this limit configurable in strfry[1]. I just need to do the same in
nostrdb now.
[1] hoytech/strfry#133
Changelog-Added: Add last_n_per_pubkey_from_tags algo function
Signed-off-by: William Casarin <[email protected]>
In an attempt to make our deck serializer more localized, comprehensible, and less error-prone, we introduce a new parser combinator based around string tokens. This replaces the Selection-based intermediary types so that we have a more direct serialization style.
This reduces the number of things we have to update in our token parser and serializer. For payloads, we we have to handle the payload cases different, but we now have a structure that can deal with that efficiently. Signed-off-by: William Casarin <[email protected]>
This simplifies token serialization Signed-off-by: William Casarin <[email protected]>
Signed-off-by: William Casarin <[email protected]>
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This is damus' first algo feed.
What's left to do
Optional
I noticed I was missing many parts of the codebase related to column serialization. In an effort to have a more direct parsing style, I created a new token parser combinator.
The algo