89 lines
3.1 KiB
Go
89 lines
3.1 KiB
Go
// Copyright 2024, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Package grpclog in intended for internal use by generated clients only.
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package grpclog
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import (
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"context"
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"encoding/json"
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"log/slog"
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"strings"
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"google.golang.org/grpc/metadata"
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"google.golang.org/protobuf/encoding/protojson"
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"google.golang.org/protobuf/proto"
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)
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// ProtoMessageRequest returns a lazily evaluated [slog.LogValuer] for
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// the provided message. The context is used to extract outgoing headers.
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func ProtoMessageRequest(ctx context.Context, msg proto.Message) slog.LogValuer {
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return &protoMessage{ctx: ctx, msg: msg}
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}
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// ProtoMessageResponse returns a lazily evaluated [slog.LogValuer] for
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// the provided message.
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func ProtoMessageResponse(msg proto.Message) slog.LogValuer {
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return &protoMessage{msg: msg}
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}
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type protoMessage struct {
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ctx context.Context
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msg proto.Message
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}
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func (m *protoMessage) LogValue() slog.Value {
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if m == nil || m.msg == nil {
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return slog.Value{}
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}
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var groupValueAttrs []slog.Attr
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if m.ctx != nil {
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var headerAttr []slog.Attr
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if m, ok := metadata.FromOutgoingContext(m.ctx); ok {
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for k, v := range m {
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headerAttr = append(headerAttr, slog.String(k, strings.Join(v, ",")))
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}
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}
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if len(headerAttr) > 0 {
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groupValueAttrs = append(groupValueAttrs, slog.Any("headers", headerAttr))
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}
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}
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mo := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true}
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if b, err := mo.Marshal(m.msg); err == nil {
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var m map[string]any
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if err := json.Unmarshal(b, &m); err == nil {
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groupValueAttrs = append(groupValueAttrs, slog.Any("payload", m))
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}
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}
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return slog.GroupValue(groupValueAttrs...)
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}
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