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63 lines
2.2 KiB
Go
63 lines
2.2 KiB
Go
// Copyright 2022 Harness Inc. All rights reserved.
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// Use of this source code is governed by the Polyform Free Trial License
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// that can be found in the LICENSE.md file for this repository.
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package gitrpc
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import (
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"context"
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"github.com/harness/gitness/gitrpc/rpc"
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"google.golang.org/grpc"
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"google.golang.org/grpc/metadata"
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)
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type requestIDKey struct{}
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// ClientLogInterceptor injects the zerlog request ID into the metadata.
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// That allows the gitrpc server to log with the same request ID as the client.
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type ClientLogInterceptor struct {
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}
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func NewClientLogInterceptor() ClientLogInterceptor {
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return ClientLogInterceptor{}
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}
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func (i ClientLogInterceptor) UnaryClientInterceptor() grpc.UnaryClientInterceptor {
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return func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn,
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invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
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ctx = appendLoggingRequestIDToOutgoingMetadata(ctx)
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return invoker(ctx, method, req, reply, cc, opts...)
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}
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}
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func (i ClientLogInterceptor) StreamClientInterceptor() grpc.StreamClientInterceptor {
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return func(ctx context.Context, desc *grpc.StreamDesc, cc *grpc.ClientConn, method string,
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streamer grpc.Streamer, opts ...grpc.CallOption) (grpc.ClientStream, error) {
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ctx = appendLoggingRequestIDToOutgoingMetadata(ctx)
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return streamer(ctx, desc, cc, method)
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}
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}
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// WithRequestID returns a copy of parent in which the request id value is set.
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// This can be used by external entities to pass request IDs to gitrpc.
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func WithRequestID(parent context.Context, v string) context.Context {
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return context.WithValue(parent, requestIDKey{}, v)
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}
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// RequestIDFrom returns the value of the request ID key on the
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// context - ok is true iff a non-empty value existed.
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func RequestIDFrom(ctx context.Context) (string, bool) {
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v, ok := ctx.Value(requestIDKey{}).(string)
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return v, ok && v != ""
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}
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// appendLoggingRequestIDToOutgoingMetadata appends the zerolog request ID to the outgoing grpc metadata, if available.
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func appendLoggingRequestIDToOutgoingMetadata(ctx context.Context) context.Context {
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if id, ok := RequestIDFrom(ctx); ok {
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ctx = metadata.AppendToOutgoingContext(ctx, rpc.MetadataKeyRequestID, id)
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}
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return ctx
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}
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