46 lines
1.2 KiB
Go
46 lines
1.2 KiB
Go
package macaroons
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import (
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"encoding/hex"
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"golang.org/x/net/context"
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macaroon "gopkg.in/macaroon.v2"
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)
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// MacaroonCredential wraps a macaroon to implement the
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// credentials.PerRPCCredentials interface.
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type MacaroonCredential struct {
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*macaroon.Macaroon
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}
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// RequireTransportSecurity implements the PerRPCCredentials interface.
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func (m MacaroonCredential) RequireTransportSecurity() bool {
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return true
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}
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// GetRequestMetadata implements the PerRPCCredentials interface. This method
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// is required in order to pass the wrapped macaroon into the gRPC context.
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// With this, the macaroon will be available within the request handling scope
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// of the ultimate gRPC server implementation.
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func (m MacaroonCredential) GetRequestMetadata(ctx context.Context,
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uri ...string) (map[string]string, error) {
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macBytes, err := m.MarshalBinary()
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if err != nil {
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return nil, err
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}
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md := make(map[string]string)
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md["macaroon"] = hex.EncodeToString(macBytes)
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return md, nil
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}
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// NewMacaroonCredential returns a copy of the passed macaroon wrapped in a
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// MacaroonCredential struct which implements PerRPCCredentials.
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func NewMacaroonCredential(m *macaroon.Macaroon) MacaroonCredential {
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ms := MacaroonCredential{}
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ms.Macaroon = m.Clone()
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return ms
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}
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