mirror of
https://github.com/livekit/livekit.git
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54 lines
1.7 KiB
Go
54 lines
1.7 KiB
Go
// Copyright 2026 LiveKit, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package service
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import (
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"context"
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"github.com/livekit/protocol/utils/guid"
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)
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// RequestIDAttribute is the participant attribute stamped with the request id
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// for calls that join a room before dialing. A
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// retry finds the existing participant with a matching value and skips the dial.
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const RequestIDAttribute = "lk.request_id"
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type requestIDKey struct{}
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// WithRequestID stores the client idempotency id on the context and propagates
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// it to downstream services via outgoing metadata. A no-op when id is empty.
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func WithRequestID(ctx context.Context, id string) context.Context {
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if id == "" {
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return ctx
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}
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return context.WithValue(ctx, requestIDKey{}, id)
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}
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func RequestID(ctx context.Context) string {
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if id, ok := ctx.Value(requestIDKey{}).(string); ok && id != "" {
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return id
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}
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return ""
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}
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// DeterministicID derives a stable resource id from the request id — retries of the same logical call
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// yield the same id and dedup at the store. With no request id it falls back to a random id.
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func DeterministicID(prefix, requestID string) string {
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if requestID == "" {
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return guid.New(prefix)
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}
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return guid.Hash(prefix, []byte(requestID))
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}
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