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extract.go
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/
extract.go
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package queryplan
import (
"errors"
"github.com/apstndb/spannerplanviz/protoyaml"
"google.golang.org/genproto/googleapis/spanner/v1"
"gopkg.in/yaml.v3"
)
func ExtractQueryPlan(b []byte) (*spanner.ResultSetStats, *spanner.StructType, error) {
var jsonObj map[string]interface{}
err := yaml.Unmarshal(b, &jsonObj)
if err != nil {
return nil, nil, err
}
if _, ok := jsonObj["queryPlan"]; ok {
var rss spanner.ResultSetStats
err = protoyaml.Unmarshal(b, &rss)
if err != nil {
return nil, nil, err
}
return &rss, nil, nil
} else if _, ok := jsonObj["planNodes"]; ok {
var qp spanner.QueryPlan
err = protoyaml.Unmarshal(b, &qp)
if err != nil {
return nil, nil, err
}
return &spanner.ResultSetStats{QueryPlan: &qp}, nil, nil
} else if _, ok := jsonObj["stats"]; ok {
var rs spanner.ResultSet
err = protoyaml.Unmarshal(b, &rs)
if err != nil {
return nil, nil, err
}
return rs.GetStats(), rs.GetMetadata().GetRowType(), nil
}
return nil, nil, errors.New("unknown input format")
}