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common.go
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common.go
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// Package span implements common functions.
//
// Copyright 2015 by Leipzig University Library, http://ub.uni-leipzig.de
// The Finc Authors, http://finc.info
// Martin Czygan, <martin.czygan@uni-leipzig.de>
//
// This file is part of some open source application.
//
// Some open source application is free software: you can redistribute
// it and/or modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation, either
// version 3 of the License, or (at your option) any later version.
//
// Some open source application is distributed in the hope that it will
// be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Foobar. If not, see <http://www.gnu.org/licenses/>.
//
// @license GPL-3.0+ <http://spdx.org/licenses/GPL-3.0+>
//
package span
import (
"encoding/base64"
"fmt"
)
const (
// AppVersion of span package. Commandline tools will show this on -v.
AppVersion = "0.1.342"
// KeyLengthLimit was a limit imposed by the memcached protocol, which
// was used for blob storage until Q1 2017. We switched the key-value
// store, so this limit is somewhat obsolete.
KeyLengthLimit = 250
)
// Skip marks records to skip.
type Skip struct {
Reason string
}
// Error returns the reason for skipping.
func (s Skip) Error() string {
return fmt.Sprintf("[skip] %s", s.Reason)
}
// GenFincID returns a finc.id string consisting of an arbitraty prefix (e.g.
// "ai"), source id and URL safe record id. No additional checks, sid and rid
// should not be empty.
func GenFincID(sid, rid string) string {
return fmt.Sprintf("ai-%s-%s", sid,
base64.RawURLEncoding.EncodeToString([]byte(rid)))
}