enriched metadata for tables
added support for the concept of a table and field owners in metadata; mechanism to derive owner from http request metadata; metadata for table description
i used this script, a little clunky but it got the job done
```bash
for file in `find . -type f -print | grep '\.go'`; do
sed '1,/^\/\/ limitations under the License.$/d' $file > $file.tmp;
result=`cat $file.tmp`
if [[ result != "" ]]; then
gofmt $file.tmp &> /dev/null;
if [[ $? == 0 ]]; then
mv $file.tmp $file && gofmt -w $file;
else
rm $file.tmp;
fi
else
rm $file.tmp;
fi
done
```
This adds a "duration" parameter to RowResponse and TableResponse, which
will be populated with the query duration in nanoseconds.
For QueryPQLUnary and QuerySQLUnary, the duration is a included in the
returned TableResponse.
For QuerySQL and QueryPQL, only the first RowResponse in the stream will
contain the duration.
- introduce Query Context (Qcx) for managing database-per-shard.
- replaces the MultiTx, so mtx.go is retired and removed.
- introduces the HolderConfig struct and all Holders now have
a path from birth.
- rbf speedups on bitwise writes
- badgerdb is removed due to unresolvable write conflicts.
fixes#703#676
This PR adds a `StatusError` to the `pproto.RowResponse` type, which
allows a stream to pass an error on the stream (encoded into
the `RowResponse.StatusError`). This can be checked downstream
for matching `EOF` or `err != nil` and handled appropriately.
This is helpful mainly with the `RowResponse` reducers which run in
goroutines. Instead of trying to manage a separate channel of errors
from those goroutines, we just follow the grpc model and send the
error with the stream.
This PR is meant to get all columns from an index
based on the TrackExistence row.
`All()` is a PQL function that can be used as a typical
row object. Optional arguments are `limit` and `offset`.
In order to standardize results as streams of RowResponse,
this PR introduces two interfaces `StreamClient` and
`StreamServer`) which mirror the grpc stream interfaces.
Upstream users (sqlmapper, vdsm, etc) can implement
instances of these interfaces to ensure that results can
stream through the entire sytem in an expected way.
This PR also fixes a couple of missing data types.
add makeRows() tests
register the gRPC server
use api.Index() instead of api.Schema()
support most field types in Inspect() query
currently, there's no support for `time` fields.
those will be dependent upon the output format
and the ability to materialize the timestamp from
the time views.
this commit also changes the response type of the
`Inspect()` query to be a tabular `RowResponse`.
