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https://github.com/matrix-construct/construct
synced 2024-12-26 15:33:54 +01:00
modules/client/rooms/relations: Improve w/ chunked encoding; visibility checks; event append. (#126)
This commit is contained in:
Jason Volk
parent
7420bf1156
commit
08120bb194
1 changed files with 101 additions and 65 deletions
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@ -12,6 +12,15 @@
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using namespace ircd;
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static void
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relations_chunk(client &client,
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const resource::request &request,
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const m::room::id &room_id,
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const m::event::id &event_id,
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const string_view &rel_type,
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const string_view &type,
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json::stack::array &chunk);
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resource::response
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get__relations(client &client,
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const resource::request &request,
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@ -20,7 +29,7 @@ get__relations(client &client,
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if(!m::exists(room_id))
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throw m::NOT_FOUND
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{
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"Cannot take a report about %s which is not found.",
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"Cannot find relations in %s which is not found.",
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string_view{room_id}
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};
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@ -42,114 +51,141 @@ get__relations(client &client,
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string_view{event_id}
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};
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if(request.parv.size() < 4)
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// Get the rel_type path parameter.
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// Note: Not requiring path parameter; empty will mean all types.
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char rel_type_buf[m::event::TYPE_MAX_SIZE];
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if((false) && request.parv.size() < 4)
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throw m::NEED_MORE_PARAMS
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{
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"relation first path parameter required"
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"relation rel_type path parameter required"
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};
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if(request.parv.size() < 5)
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const string_view &rel_type
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{
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url::decode(rel_type_buf, request.parv[3])
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};
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// Get the alleged type path parameter.
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// Note: Not requiring this path parameter either; it is not clear yet
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// what this parameter actually means.
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char type_buf[m::event::TYPE_MAX_SIZE];
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if((false) && request.parv.size() < 5)
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throw m::NEED_MORE_PARAMS
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{
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"relation second path parameter required"
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"relation ?type? path parameter required"
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};
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char rbuf[2][256];
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const string_view r[2]
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const string_view &type
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{
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url::decode(rbuf[0], request.parv[3]),
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url::decode(rbuf[1], request.parv[4]),
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url::decode(type_buf, request.parv[4])
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};
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const unique_buffer<mutable_buffer> buf
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resource::response::chunked response
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{
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96_KiB
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client, http::OK
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};
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json::stack out
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{
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response.buf, response.flusher()
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};
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json::stack out{buf};
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json::stack::object top
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{
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out
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};
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m::event::idx next_idx
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{
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index(event_id, std::nothrow)
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};
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json::stack::array chunk
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{
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top, "chunk"
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};
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const m::event::fetch event
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relations_chunk(client, request, room_id, event_id, rel_type, type, chunk);
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return response;
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}
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void
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relations_chunk(client &client,
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const resource::request &request,
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const m::room::id &room_id,
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const m::event::id &event_id,
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const string_view &rel_type,
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const string_view &type,
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json::stack::array &chunk)
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try
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{
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const auto append{[&chunk, &request]
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(const auto &event_idx, const m::event &event)
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{
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next_idx, std::nothrow
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m::event::append::opts opts;
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opts.event_idx = &event_idx;
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opts.user_id = &request.user_id;
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opts.query_txnid = false;
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m::event::append
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{
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chunk, event, opts
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};
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}};
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m::event::idx event_idx
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{
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index(event_id, std::nothrow)
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};
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if(event.valid)
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chunk.append(event);
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m::event::fetch event
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{
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event_idx, std::nothrow
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};
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const auto each_ref{[&r, &next_idx, &chunk]
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const auto each_ref{[&event, &append, &rel_type, &request]
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(const m::event::idx &event_idx, const m::dbs::ref &)
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{
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const m::event::fetch event
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{
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event_idx, std::nothrow
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};
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if(!event.valid)
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if(!seek(event, event_idx, std::nothrow))
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return true;
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const json::object &m_relates_to
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{
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json::get<"content"_>(event).get("m.relates_to")
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at<"content"_>(event).get("m.relates_to")
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};
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const json::string &rel_type
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const json::string &_rel_type
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{
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m_relates_to.get("rel_type")
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};
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if(rel_type != r[0])
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if(_rel_type != rel_type)
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return true;
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chunk.append(event);
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next_idx = event_idx;
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return false;
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if(!visible(event, request.user_id))
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return true;
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append(event_idx, event);
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return true;
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}};
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while(next_idx) try
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if(!event.valid)
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return;
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if(!visible(event, request.user_id))
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return;
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// Send the original event
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append(event_idx, event);
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// Send all the referencees
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const m::event::refs refs{event_idx};
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refs.for_each(m::dbs::ref::M_RELATES, each_ref);
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}
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catch(const std::exception &e)
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{
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log::error
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{
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const m::event::refs refs
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{
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next_idx
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};
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if(refs.for_each(m::dbs::ref::M_RELATES, each_ref))
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break;
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}
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catch(const std::exception &e)
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{
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log::error
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{
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m::log, "relation trace from %s on %ld :%s",
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string_view{event_id},
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next_idx,
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e.what()
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};
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break;
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}
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chunk.~array();
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top.~object();
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return resource::response
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{
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client, json::object
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{
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out.completed()
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}
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m::log, "relations in %s for %s rel_type:%s type:%s by %s :%s",
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string_view{room_id},
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string_view{event_id},
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rel_type,
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type,
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string_view{request.user_id},
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e.what(),
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};
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}
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