/
caveat.go
168 lines (142 loc) · 4.61 KB
/
caveat.go
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package mysql
import (
"context"
"database/sql"
"errors"
"fmt"
"github.com/authzed/spicedb/internal/datastore/common"
"github.com/authzed/spicedb/internal/datastore/revisions"
"github.com/authzed/spicedb/pkg/datastore"
core "github.com/authzed/spicedb/pkg/proto/core/v1"
sq "github.com/Masterminds/squirrel"
)
const (
errDeleteCaveat = "unable to delete caveats: %w"
errReadCaveat = "unable to read caveat: %w"
errListCaveats = "unable to list caveats: %w"
errWriteCaveats = "unable to write caveats: %w"
)
func (mr *mysqlReader) ReadCaveatByName(ctx context.Context, name string) (*core.CaveatDefinition, datastore.Revision, error) {
filteredReadCaveat := mr.filterer(mr.ReadCaveatQuery)
sqlStatement, args, err := filteredReadCaveat.Where(sq.Eq{colName: name}).ToSql()
if err != nil {
return nil, datastore.NoRevision, err
}
tx, txCleanup, err := mr.txSource(ctx)
if err != nil {
return nil, datastore.NoRevision, fmt.Errorf(errReadCaveat, err)
}
defer common.LogOnError(ctx, txCleanup)
var serializedDef []byte
var txID uint64
err = tx.QueryRowContext(ctx, sqlStatement, args...).Scan(&serializedDef, &txID)
if err != nil {
if errors.Is(err, sql.ErrNoRows) {
return nil, datastore.NoRevision, datastore.NewCaveatNameNotFoundErr(name)
}
return nil, datastore.NoRevision, fmt.Errorf(errReadCaveat, err)
}
def := core.CaveatDefinition{}
err = def.UnmarshalVT(serializedDef)
if err != nil {
return nil, datastore.NoRevision, fmt.Errorf(errReadCaveat, err)
}
return &def, revisions.NewForTransactionID(txID), nil
}
func (mr *mysqlReader) LookupCaveatsWithNames(ctx context.Context, caveatNames []string) ([]datastore.RevisionedCaveat, error) {
if len(caveatNames) == 0 {
return nil, nil
}
return mr.lookupCaveats(ctx, caveatNames)
}
func (mr *mysqlReader) ListAllCaveats(ctx context.Context) ([]datastore.RevisionedCaveat, error) {
return mr.lookupCaveats(ctx, nil)
}
func (mr *mysqlReader) lookupCaveats(ctx context.Context, caveatNames []string) ([]datastore.RevisionedCaveat, error) {
caveatsWithNames := mr.ListCaveatsQuery
if len(caveatNames) > 0 {
caveatsWithNames = caveatsWithNames.Where(sq.Eq{colName: caveatNames})
}
filteredListCaveat := mr.filterer(caveatsWithNames)
listSQL, listArgs, err := filteredListCaveat.ToSql()
if err != nil {
return nil, err
}
tx, txCleanup, err := mr.txSource(ctx)
if err != nil {
return nil, fmt.Errorf(errListCaveats, err)
}
defer common.LogOnError(ctx, txCleanup)
rows, err := tx.QueryContext(ctx, listSQL, listArgs...)
if err != nil {
return nil, fmt.Errorf(errListCaveats, err)
}
defer common.LogOnError(ctx, rows.Close)
var caveats []datastore.RevisionedCaveat
for rows.Next() {
var defBytes []byte
var txID uint64
err = rows.Scan(&defBytes, &txID)
if err != nil {
return nil, fmt.Errorf(errListCaveats, err)
}
c := core.CaveatDefinition{}
err = c.UnmarshalVT(defBytes)
if err != nil {
return nil, fmt.Errorf(errListCaveats, err)
}
caveats = append(caveats, datastore.RevisionedCaveat{
Definition: &c,
LastWrittenRevision: revisions.NewForTransactionID(txID),
})
}
if rows.Err() != nil {
return nil, fmt.Errorf(errListCaveats, rows.Err())
}
return caveats, nil
}
func (rwt *mysqlReadWriteTXN) WriteCaveats(ctx context.Context, caveats []*core.CaveatDefinition) error {
if len(caveats) == 0 {
return nil
}
writeQuery := rwt.WriteCaveatQuery
caveatNamesToWrite := make([]string, 0, len(caveats))
for _, newCaveat := range caveats {
serialized, err := newCaveat.MarshalVT()
if err != nil {
return fmt.Errorf("unable to write caveat: %w", err)
}
writeQuery = writeQuery.Values(newCaveat.Name, serialized, rwt.newTxnID)
caveatNamesToWrite = append(caveatNamesToWrite, newCaveat.Name)
}
err := rwt.deleteCaveatsFromNames(ctx, caveatNamesToWrite)
if err != nil {
return fmt.Errorf(errWriteCaveats, err)
}
querySQL, writeArgs, err := writeQuery.ToSql()
if err != nil {
return fmt.Errorf(errWriteCaveats, err)
}
_, err = rwt.tx.ExecContext(ctx, querySQL, writeArgs...)
if err != nil {
return fmt.Errorf(errWriteCaveats, err)
}
return nil
}
func (rwt *mysqlReadWriteTXN) DeleteCaveats(ctx context.Context, names []string) error {
return rwt.deleteCaveatsFromNames(ctx, names)
}
func (rwt *mysqlReadWriteTXN) deleteCaveatsFromNames(ctx context.Context, names []string) error {
delSQL, delArgs, err := rwt.DeleteCaveatQuery.
Set(colDeletedTxn, rwt.newTxnID).
Where(sq.Eq{colName: names}).
ToSql()
if err != nil {
return fmt.Errorf(errDeleteCaveat, err)
}
_, err = rwt.tx.ExecContext(ctx, delSQL, delArgs...)
if err != nil {
return fmt.Errorf(errDeleteCaveat, err)
}
return nil
}