forked from TrueCloudLab/frostfs-http-gw
57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
package handler
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import (
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"bytes"
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"fmt"
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"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
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"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
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"github.com/valyala/fasthttp"
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"go.uber.org/zap"
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)
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func filterHeaders(l *zap.Logger, header *fasthttp.RequestHeader) (map[string]string, error) {
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var err error
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result := make(map[string]string)
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prefix := []byte(utils.UserAttributeHeaderPrefix)
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header.VisitAll(func(key, val []byte) {
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// checks that the key and the val not empty
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if len(key) == 0 || len(val) == 0 {
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return
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}
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// checks that the key has attribute prefix
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if !bytes.HasPrefix(key, prefix) {
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return
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}
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// removing attribute prefix
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clearKey := bytes.TrimPrefix(key, prefix)
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clearKey = utils.TransformIfSystem(clearKey)
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// checks that the attribute key is not empty
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if len(clearKey) == 0 {
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return
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}
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// check if key gets duplicated
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// return error containing full key name (with prefix)
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if _, ok := result[string(clearKey)]; ok {
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err = fmt.Errorf("key duplication error: %s", string(key))
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return
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}
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// make string representation of key / val
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k, v := string(clearKey), string(val)
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result[k] = v
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l.Debug(logs.AddAttributeToResultObject,
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zap.String("key", k),
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zap.String("val", v))
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})
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return result, err
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}
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