// buildFilter builds a Filter (tagpass/tagdrop/pass/drop) to
// be inserted into the models.OutputConfig/models.InputConfig to be used for prefix
// filtering on tags and measurements
func buildFilter(tbl *ast.Table) models.Filter {
f := models.Filter{}
if node, ok := tbl.Fields["pass"]; ok {
if kv, ok := node.(*ast.KeyValue); ok {
if ary, ok := kv.Value.(*ast.Array); ok {
for _, elem := range ary.Value {
if str, ok := elem.(*ast.String); ok {
f.Pass = append(f.Pass, str.Value)
f.IsActive = true
}
}
}
}
}
if node, ok := tbl.Fields["drop"]; ok {
if kv, ok := node.(*ast.KeyValue); ok {
if ary, ok := kv.Value.(*ast.Array); ok {
for _, elem := range ary.Value {
if str, ok := elem.(*ast.String); ok {
f.Drop = append(f.Drop, str.Value)
f.IsActive = true
}
}
}
}
}
if node, ok := tbl.Fields["tagpass"]; ok {
if subtbl, ok := node.(*ast.Table); ok {
for name, val := range subtbl.Fields {
if kv, ok := val.(*ast.KeyValue); ok {
tagfilter := &models.TagFilter{Name: name}
if ary, ok := kv.Value.(*ast.Array); ok {
for _, elem := range ary.Value {
if str, ok := elem.(*ast.String); ok {
tagfilter.Filter = append(tagfilter.Filter, str.Value)
}
}
}
f.TagPass = append(f.TagPass, *tagfilter)
f.IsActive = true
}
}
}
}
if node, ok := tbl.Fields["tagdrop"]; ok {
if subtbl, ok := node.(*ast.Table); ok {
for name, val := range subtbl.Fields {
if kv, ok := val.(*ast.KeyValue); ok {
tagfilter := &models.TagFilter{Name: name}
if ary, ok := kv.Value.(*ast.Array); ok {
for _, elem := range ary.Value {
if str, ok := elem.(*ast.String); ok {
tagfilter.Filter = append(tagfilter.Filter, str.Value)
}
}
}
f.TagDrop = append(f.TagDrop, *tagfilter)
f.IsActive = true
}
}
}
}
delete(tbl.Fields, "drop")
delete(tbl.Fields, "pass")
delete(tbl.Fields, "tagdrop")
delete(tbl.Fields, "tagpass")
return f
}