55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
package container
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import (
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"errors"
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"fmt"
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"github.com/nspcc-dev/neofs-api-go/pkg"
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"github.com/nspcc-dev/neofs-api-go/pkg/container"
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"github.com/nspcc-dev/neofs-api-go/pkg/owner"
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)
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var (
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errNilPolicy = errors.New("placement policy is nil")
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errRepeatedAttributes = errors.New("repeated attributes found")
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errEmptyAttribute = errors.New("empty attribute found")
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)
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// CheckFormat conducts an initial check of the v2 container data.
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//
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// It is expected that if a container fails this test,
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// it will not be inner-ring approved.
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func CheckFormat(c *container.Container) error {
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if c.PlacementPolicy() == nil {
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return errNilPolicy
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}
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if err := pkg.IsSupportedVersion(c.Version()); err != nil {
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return fmt.Errorf("incorrect version: %w", err)
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}
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if ln := len(c.OwnerID().ToV2().GetValue()); ln != owner.NEO3WalletSize {
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return fmt.Errorf("incorrect owner identifier: expected length %d != %d", owner.NEO3WalletSize, ln)
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}
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if _, err := c.NonceUUID(); err != nil {
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return fmt.Errorf("incorrect nonce: %w", err)
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}
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// check if there are repeated attributes
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attrs := c.Attributes()
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uniqueAttr := make(map[string]struct{}, len(attrs))
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for _, attr := range attrs {
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if _, exists := uniqueAttr[attr.Key()]; exists {
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return errRepeatedAttributes
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}
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if attr.Value() == "" {
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return errEmptyAttribute
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}
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uniqueAttr[attr.Key()] = struct{}{}
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}
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return nil
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}
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