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query.go
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query.go
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package crdb
import (
"context"
"fmt"
sq "github.com/Masterminds/squirrel"
v0 "github.com/authzed/authzed-go/proto/authzed/api/v0"
"github.com/jackc/pgx/v4"
"go.opentelemetry.io/otel/attribute"
"github.com/authzed/spicedb/internal/datastore"
"github.com/authzed/spicedb/internal/datastore/common"
)
const (
querySetTransactionTime = "SET TRANSACTION AS OF SYSTEM TIME %s"
)
var queryTuples = psql.Select(
colNamespace,
colObjectID,
colRelation,
colUsersetNamespace,
colUsersetObjectID,
colUsersetRelation,
).From(tableTuple)
var schema = common.SchemaInformation{
ColNamespace: colNamespace,
ColObjectID: colObjectID,
ColRelation: colRelation,
ColUsersetNamespace: colUsersetNamespace,
ColUsersetObjectID: colUsersetObjectID,
ColUsersetRelation: colUsersetRelation,
}
func (cds *crdbDatastore) QueryTuples(filter datastore.TupleQueryResourceFilter, revision datastore.Revision) datastore.TupleQuery {
initialQuery := queryTuples.Where(sq.Eq{colNamespace: filter.ResourceType})
tracerAttributes := []attribute.KeyValue{common.ObjNamespaceNameKey.String(filter.ResourceType)}
if filter.OptionalResourceID != "" {
initialQuery = initialQuery.Where(sq.Eq{colObjectID: filter.OptionalResourceID})
tracerAttributes = append(tracerAttributes, common.ObjIDKey.String(filter.OptionalResourceID))
}
if filter.OptionalResourceRelation != "" {
initialQuery = initialQuery.Where(sq.Eq{colRelation: filter.OptionalResourceRelation})
tracerAttributes = append(tracerAttributes, common.ObjRelationNameKey.String(filter.OptionalResourceRelation))
}
baseSize := len(filter.ResourceType) + len(filter.OptionalResourceID) + len(filter.OptionalResourceRelation)
return common.TupleQuery{
Conn: cds.conn,
Schema: schema,
PrepareTransaction: cds.prepareTransaction,
InitialQuery: initialQuery,
InitialQuerySizeEstimate: baseSize,
Revision: revision,
Tracer: tracer,
TracerAttributes: tracerAttributes,
SplitAtEstimatedQuerySize: common.DefaultSplitAtEstimatedQuerySize,
DebugName: "QueryTuples",
}
}
func (cds *crdbDatastore) prepareTransaction(ctx context.Context, tx pgx.Tx, revision datastore.Revision) error {
setTxTime := fmt.Sprintf(querySetTransactionTime, revision)
_, err := tx.Exec(ctx, setTxTime)
return err
}
func (cds *crdbDatastore) reverseQueryBase(revision datastore.Revision) common.TupleQuery {
return common.TupleQuery{
Conn: cds.conn,
Schema: schema,
PrepareTransaction: cds.prepareTransaction,
InitialQuery: queryTuples,
Revision: revision,
Tracer: tracer,
TracerAttributes: []attribute.KeyValue{},
SplitAtEstimatedQuerySize: common.DefaultSplitAtEstimatedQuerySize,
DebugName: "ReverseQueryTuples",
}
}
func (cds *crdbDatastore) ReverseQueryTuplesFromSubject(subject *v0.ObjectAndRelation, revision datastore.Revision) datastore.ReverseTupleQuery {
return cds.reverseQueryBase(revision).ReverseQueryTuplesFromSubject(subject)
}
func (cds *crdbDatastore) ReverseQueryTuplesFromSubjectRelation(subjectNamespace, subjectRelation string, revision datastore.Revision) datastore.ReverseTupleQuery {
return cds.reverseQueryBase(revision).ReverseQueryTuplesFromSubjectRelation(subjectNamespace, subjectRelation)
}
func (cds *crdbDatastore) ReverseQueryTuplesFromSubjectNamespace(subjectNamespace string, revision datastore.Revision) datastore.ReverseTupleQuery {
return cds.reverseQueryBase(revision).ReverseQueryTuplesFromSubjectNamespace(subjectNamespace)
}