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/
utils.go
57 lines (51 loc) · 1.56 KB
/
utils.go
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// Copyright 2014 The rkt Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package imagestore
import (
"fmt"
"net/url"
"strings"
"github.com/appc/spec/schema/types"
)
// blockTransform creates a path slice from the given string to use as a
// directory prefix. The string must be in hash format:
// "sha256-abcdefgh"... -> []{"sha256", "ab"}
// Right now it just copies the default of git which is a two byte prefix. We
// will likely want to add re-sharding later.
func blockTransform(s string) []string {
// TODO(philips): use spec/types.Hash after export typ field
parts := strings.SplitN(s, "-", 2)
if len(parts) != 2 {
panic(fmt.Errorf("blockTransform should never receive non-hash, got %v", s))
}
return []string{
parts[0],
parts[1][0:2],
}
}
func parseAlways(s string) *url.URL {
u, _ := url.Parse(s)
return u
}
func getLabelPriority(name types.ACIdentifier) int {
labelsPriority := map[types.ACIdentifier]int{
"version": 0,
"os": 1,
"arch": 2,
}
if i, ok := labelsPriority[name]; ok {
return i
}
return len(labelsPriority) + 1
}