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ircd:Ⓜ️:dbs: Add indexing sequence for _room_head.

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This commit is contained in:
Jason Volk 2018-05-04 20:10:35 -07:00
parent e12863d091
commit 36b43b8607
2 changed files with 63 additions and 0 deletions
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2
include/ircd/m/dbs.h
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@ -77,6 +77,8 @@ struct ircd::m::dbs::write_opts
bool present {true};
bool history {true};
bool indexer {true};
bool head {true};
bool refs {true};
};
/// Database Schema Descriptors

61
ircd/m/dbs.cc
View file

@ -103,6 +103,7 @@ namespace ircd::m::dbs
static void _index__room_state(db::txn &, const event &, const write_opts &);
static void _index__room_events(db::txn &, const event &, const write_opts &, const string_view &);
static void _index__room_joined(db::txn &, const event &, const write_opts &);
static void _index__room_head(db::txn &, const event &, const write_opts &);
static string_view _index_state(db::txn &, const event &, const write_opts &);
static string_view _index_redact(db::txn &, const event &, const write_opts &);
static string_view _index_ephem(db::txn &, const event &, const write_opts &);
@ -152,6 +153,9 @@ ircd::m::dbs::write(db::txn &txn,
txn, byte_view<string_view>(opts.idx), event, event_column, opts.op
};
if(opts.head || opts.refs)
_index__room_head(txn, event, opts);
if(defined(json::get<"state_key"_>(event)))
return _index_state(txn, event, opts);
@ -256,6 +260,63 @@ catch(const std::exception &e)
throw;
}
void
ircd::m::dbs::_index__room_head(db::txn &txn,
const event &event,
const write_opts &opts)
{
thread_local char buf[ROOM_HEAD_KEY_MAX_SIZE];
const ctx::critical_assertion ca;
if(opts.head)
{
const string_view &key
{
room_head_key(buf, at<"room_id"_>(event), at<"event_id"_>(event))
};
db::txn::append
{
txn, room_head,
{
opts.op,
key,
byte_view<string_view>{opts.idx}
}
};
}
//TODO: If op is DELETE and we are deleting this event and thereby
//TODO: potentially creating a gap in the reference graph (just for us
//TODO: though) can we *re-add* the prev_events to the head?
if(opts.refs && opts.op == db::op::SET)
{
const m::event::prev &prev{event};
for(const json::array &p : json::get<"prev_events"_>(prev))
{
const auto &event_id
{
unquote(p.at(0))
};
const string_view &key
{
room_head_key(buf, at<"room_id"_>(event), event_id)
};
db::txn::append
{
txn, room_head,
{
db::op::DELETE,
key,
}
};
}
}
}
/// Adds the entry for the room_events column into the txn.
/// You need find/create the right state_root before this.
void