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ircd:Ⓜ️:events::refs: Add unbounded column scan w/ console cmd.
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3 changed files with 154 additions and 0 deletions
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@ -83,6 +83,16 @@ namespace ircd::m::events::state
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bool for_each(const closure &);
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}
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/// Interface to scan the refs of events
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namespace ircd::m::events::refs
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{
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// (source, type, target)
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using closure = std::function<bool (const event::idx &, const dbs::ref &, const event::idx &)>;
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// Iterate events in range
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bool for_each(const range &, const closure &);
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}
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/// Interface to scan the content of events
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namespace ircd::m::events::content
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{
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@ -408,6 +408,81 @@ ircd::m::events::content::for_each(const closure &closure)
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return true;
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}
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//
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// events::refs
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//
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namespace ircd::m::events::refs
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{
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extern conf::item<size_t> readahead;
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}
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decltype(ircd::m::events::refs::readahead)
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ircd::m::events::refs::readahead
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{
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{ "name", "ircd.m.events.refs.readahead" },
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{ "default", long(4_MiB) },
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};
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bool
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ircd::m::events::refs::for_each(const range &range,
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const closure &closure)
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{
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db::column &event_refs
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{
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dbs::event_refs
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};
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db::gopts gopts
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{
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db::get::NO_CACHE,
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db::get::NO_CHECKSUM
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};
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gopts.readahead = size_t(readahead);
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const auto start
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{
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std::min(range.first, range.second)
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};
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const auto stop
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{
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std::max(range.first, range.second)
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};
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auto it
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{
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event_refs.lower_bound(byte_view<string_view>(start), gopts)
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};
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for(; it; ++it)
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{
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const auto &key
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{
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it->first
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};
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const event::idx src
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{
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byte_view<event::idx, false>(key)
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};
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if(src >= stop)
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break;
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const auto &[type, tgt]
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{
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dbs::event_refs_key(key.substr(sizeof(event::idx)))
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};
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assert(tgt != src);
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if(!closure(src, type, tgt))
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return false;
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}
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return true;
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}
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//
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// events::state
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//
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@ -7785,6 +7785,75 @@ console_cmd__events__state(opt &out, const string_view &line)
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return true;
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}
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bool
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console_cmd__events__refs(opt &out, const string_view &line)
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{
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const params param{line, " ",
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{
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"start", "stop", "type", "limit"
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}};
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const m::event::idx start
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{
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param.at("start", m::vm::sequence::retired - 128)
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};
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const m::event::idx stop
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{
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param.at("stop", m::vm::sequence::retired + 1)
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};
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const string_view &typestr
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{
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param.at("type", "*"_sv)
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};
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size_t limit
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{
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param.at("limit", 2048UL)
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};
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m::dbs::ref type
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{
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typestr == "*"?
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m::dbs::ref(-1):
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m::dbs::ref(0)
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};
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if(type != m::dbs::ref(-1))
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for(; uint8_t(type) < sizeof(m::dbs::ref) * 256; type = m::dbs::ref(uint8_t(type) + 1))
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if(reflect(type) == typestr)
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break;
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m::events::refs::for_each({start, stop}, [&out, &limit]
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(const auto &src, const auto &type, const auto &tgt)
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-> bool
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{
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const auto src_id
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{
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m::event_id(std::nothrow, src)
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};
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const auto tgt_id
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{
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m::event_id(std::nothrow, tgt)
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};
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out
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<< " " << std::right << std::setw(10) << src
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<< " " << std::left << std::setw(45) << trunc(src_id? string_view{src_id}: "<index error>"_sv, 45)
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<< " " << std::right << std::setw(12) << trunc(reflect(type), 12)
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<< " -> " << std::right << std::setw(10) << tgt
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<< " " << std::left << std::setw(45) << trunc(tgt_id? string_view{tgt_id}: "<index error>"_sv, 45)
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<< std::endl
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;
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return --limit;
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});
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return true;
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}
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bool
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console_cmd__events__dump(opt &out, const string_view &line)
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{
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