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ircd:Ⓜ️:state: Add get_node(nothrow) overload.

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This commit is contained in:
Jason Volk 2018-04-11 17:18:51 -07:00
parent f9ad2523a2
commit b16aa7f55c
2 changed files with 16 additions and 1 deletions
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1
include/ircd/m/state.h
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@ -55,6 +55,7 @@ namespace ircd::m::state
json::array make_key(const mutable_buffer &out, const string_view &type);
id set_node(db::txn &txn, const mutable_buffer &id, const json::object &node);
bool get_node(const std::nothrow_t, const string_view &id, const node_closure &);
void get_node(const string_view &id, const node_closure &);
id remove(db::txn &, const mutable_buffer &rootout, const id &rootin, const json::array &key);

16
ircd/m/state.cc
View file

@ -783,10 +783,24 @@ ircd::m::state::_getbuffer(const uint8_t &height)
void
ircd::m::state::get_node(const string_view &node_id,
const node_closure &closure)
{
if(!get_node(std::nothrow, node_id, closure))
throw m::NOT_FOUND
{
"node_id %s not found",
string_view{node_id}
};
}
/// View a node by ID. This makes a DB query and may yield ircd::ctx.
bool
ircd::m::state::get_node(const std::nothrow_t,
const string_view &node_id,
const node_closure &closure)
{
assert(bool(dbs::state_node));
auto &column{dbs::state_node};
column(node_id, closure);
return column(node_id, std::nothrow, closure);
}
/// Writes a node to the db::txn and returns the id of this node (a hash) into