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package blocks
import (
"fmt"
"strings"
"github.com/ccoveille/go-safecast"
yamlv3 "gopkg.in/yaml.v3"
"github.com/authzed/spicedb/pkg/spiceerrors"
"github.com/authzed/spicedb/pkg/tuple"
)
// ParsedRelationships is the parsed relationships in a validationfile.
type ParsedRelationships struct {
// RelationshipsString is the found string of newline-separated relationships.
RelationshipsString string
// SourcePosition is the position of the schema in the file.
SourcePosition spiceerrors.SourcePosition
// Relationships are the fully parsed relationships.
Relationships []tuple.Relationship
}
// UnmarshalYAML is a custom unmarshaller.
func (pr *ParsedRelationships) UnmarshalYAML(node *yamlv3.Node) error {
err := node.Decode(&pr.RelationshipsString)
if err != nil {
return convertYamlError(err)
}
relationshipsString := pr.RelationshipsString
if relationshipsString == "" {
return nil
}
seenTuples := map[string]bool{}
lines := strings.Split(relationshipsString, "\n")
relationships := make([]tuple.Relationship, 0, len(lines))
for index, line := range lines {
trimmed := strings.TrimSpace(line)
if len(trimmed) == 0 || strings.HasPrefix(trimmed, "//") {
continue
}
// +1 for the key, and *2 for newlines in YAML
errorLine, err := safecast.ToUint64(node.Line + 1 + (index * 2))
if err != nil {
return err
}
column, err := safecast.ToUint64(node.Column)
if err != nil {
return err
}
rel, err := tuple.Parse(trimmed)
if err != nil {
return spiceerrors.NewWithSourceError(
fmt.Errorf("error parsing relationship `%s`: %w", trimmed, err),
trimmed,
errorLine,
column,
)
}
_, ok := seenTuples[tuple.StringWithoutCaveatOrExpiration(rel)]
if ok {
return spiceerrors.NewWithSourceError(
fmt.Errorf("found repeated relationship `%s`", trimmed),
trimmed,
errorLine,
column,
)
}
seenTuples[tuple.StringWithoutCaveatOrExpiration(rel)] = true
relationships = append(relationships, rel)
}
pr.Relationships = relationships
pr.SourcePosition = spiceerrors.SourcePosition{LineNumber: node.Line, ColumnPosition: node.Column}
return nil
}
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