clair/blob.go

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// Copyright 2019 clair 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 clair
import (
"context"
"io"
"net/http"
"os"
"strings"
"github.com/coreos/clair/pkg/httputil"
)
func retrieveLayerBlob(ctx context.Context, path string, headers map[string]string) (io.ReadCloser, error) {
if strings.HasPrefix(path, "http://") || strings.HasPrefix(path, "https://") {
httpHeaders := make(http.Header)
for key, value := range headers {
httpHeaders[key] = []string{value}
}
reader, err := httputil.GetWithContext(ctx, path, httpHeaders)
if err != nil {
return nil, err
}
return reader, nil
}
return os.Open(path)
}