mirror of
https://github.com/siderolabs/talos.git
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96aa9638f7
There's a cyclic dependency on siderolink library which imports talos machinery back. We will fix that after we get talos pushed under a new name. Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// Package codec registers the gRPC for optimized marshaling.
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//
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// Package should be dummy imported to enable.
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package codec
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import (
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"fmt"
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"google.golang.org/grpc/encoding"
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"google.golang.org/grpc/encoding/proto"
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talosproto "github.com/siderolabs/talos/pkg/machinery/proto"
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)
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// gogoMessage is the interface for gogoproto additions.
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//
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// We use only a subset of that interface but include additional methods
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// to prevent accidental successful type assertion for unrelated types.
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type gogoMessage interface {
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Marshal() ([]byte, error)
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MarshalTo([]byte) (int, error)
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MarshalToSizedBuffer([]byte) (int, error)
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Unmarshal([]byte) error
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}
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// Codec provides protobuf encoding.Codec.
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type Codec struct{}
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// Marshal implements encoding.Codec.
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func (Codec) Marshal(v interface{}) ([]byte, error) {
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// some third-party types (like from etcd and containerd) implement gogoMessage
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if gm, ok := v.(gogoMessage); ok {
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return gm.Marshal()
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}
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// our types implement Message (with or without vtproto additions depending on build configuration)
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if m, ok := v.(talosproto.Message); ok {
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return talosproto.Marshal(m)
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}
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// no types implement protobuf API v1 only, so don't check for it
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return nil, fmt.Errorf("failed to marshal %T", v)
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}
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// Unmarshal implements encoding.Codec.
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func (Codec) Unmarshal(data []byte, v interface{}) error {
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// some third-party types (like from etcd and containerd) implement gogoMessage
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if gm, ok := v.(gogoMessage); ok {
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return gm.Unmarshal(data)
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}
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// our types implement Message (with or without vtproto additions depending on build configuration)
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if m, ok := v.(talosproto.Message); ok {
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return talosproto.Unmarshal(data, m)
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}
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// no types implement protobuf API v1 only, so don't check for it
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return fmt.Errorf("failed to unmarshal %T", v)
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}
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// Name implements encoding.Codec.
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func (Codec) Name() string {
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return proto.Name // overrides google.golang.org/grpc/encoding/proto codec
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}
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func init() {
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encoding.RegisterCodec(Codec{})
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}
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