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Code Issues Releases Wiki Activity

ircd::db: Simplify internal _read() interface to single Get().

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This commit is contained in:
Jason Volk 2020-06-15 21:54:30 -07:00
parent 187701bd27
commit 597052e5c0
2 changed files with 7 additions and 40 deletions
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44
ircd/db.cc
View file

@ -7984,7 +7984,7 @@ namespace ircd::db
static rocksdb::Status _seek(database::column &, rocksdb::PinnableSlice &, const string_view &, const rocksdb::ReadOptions &);
}
size_t
rocksdb::Status
ircd::db::_read(column &column,
const string_view &key,
const rocksdb::ReadOptions &opts,
@ -7997,11 +7997,14 @@ ircd::db::_read(column &column,
};
database::column &c(column);
throw_on_error
const rocksdb::Status ret
{
_seek(c, ps, key, opts)
};
if(!valid(ret))
return ret;
const string_view value
{
slice(ps)
@ -8012,42 +8015,7 @@ ircd::db::_read(column &column,
// triggered when the result was not zero-copy
//assert(buf.empty());
return size(value);
}
size_t
ircd::db::_read(std::nothrow_t,
column &column,
const string_view &key,
const rocksdb::ReadOptions &opts,
const column::view_closure &closure)
{
std::string buf;
rocksdb::PinnableSlice ps
{
&buf
};
database::column &c(column);
const auto status
{
_seek(c, ps, key, opts)
};
if(!valid(status))
return 0;
const string_view value
{
slice(ps)
};
if(likely(closure))
closure(value);
// triggered when the result was not zero-copy
//assert(buf.empty());
return size(value);
return ret;
}
rocksdb::Status

3
ircd/db.h
View file

@ -126,8 +126,7 @@ namespace ircd::db
using _read_op = std::tuple<column, string_view>;
using _read_closure = std::function<bool (column &, const column::delta &, const rocksdb::Status &)>;
bool _read(const vector_view<_read_op> &, const rocksdb::ReadOptions &, const _read_closure & = {});
size_t _read(std::nothrow_t, column &, const string_view &key, const rocksdb::ReadOptions &, const column::view_closure & = {});
size_t _read(column &, const string_view &key, const rocksdb::ReadOptions &, const column::view_closure & = {});
rocksdb::Status _read(column &, const string_view &key, const rocksdb::ReadOptions &, const column::view_closure & = {});
// [SET] writebatch suite
std::string debug(const rocksdb::WriteBatch &);