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parser.go
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/
parser.go
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package allocation
import "github.com/opencost/opencost/core/pkg/filter/ast"
// a slice of all the allocation field instances the lexer should recognize as
// valid left-hand comparators
var allocationFilterFields []*ast.Field = []*ast.Field{
ast.NewField(FieldClusterID),
ast.NewField(FieldNode),
ast.NewField(FieldNamespace),
ast.NewField(FieldControllerName, ast.FieldAttributeNilable),
ast.NewField(FieldControllerKind, ast.FieldAttributeNilable),
ast.NewField(FieldContainer),
ast.NewField(FieldPod),
ast.NewField(FieldProvider),
ast.NewAliasField(AliasDepartment),
ast.NewAliasField(AliasEnvironment),
ast.NewAliasField(AliasOwner),
ast.NewAliasField(AliasProduct),
ast.NewAliasField(AliasTeam),
ast.NewSliceField(FieldServices),
ast.NewMapField(FieldLabel),
ast.NewMapField(FieldAnnotation),
}
// fieldMap is a lazily loaded mapping from AllocationField to ast.Field
var fieldMap map[AllocationField]*ast.Field
func init() {
fieldMap = make(map[AllocationField]*ast.Field, len(allocationFilterFields))
for _, f := range allocationFilterFields {
ff := *f
fieldMap[AllocationField(ff.Name)] = &ff
}
}
// DefaultFieldByName returns only default allocation filter fields by name.
func DefaultFieldByName(field AllocationField) *ast.Field {
if af, ok := fieldMap[field]; ok {
afcopy := *af
return &afcopy
}
return nil
}
// NewAllocationFilterParser creates a new `ast.FilterParser` implementation
// which uses allocation specific fields
func NewAllocationFilterParser() ast.FilterParser {
return ast.NewFilterParser(allocationFilterFields)
}