Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Stacktrace for rs/zerolog users
Search
masso
May 10, 2024
Technology
0
330
Stacktrace for rs/zerolog users
Asakusa.go #2 LT from masso
About:
- How to use stacktrace in rs/zerolog
masso
May 10, 2024
Tweet
Share
More Decks by masso
See All by masso
データ解釈学入門 第一部 / Data hermeneutics Part 1
masso
8
2.2k
時系列分析と状態空間モデリングの基礎 / Foundations of Time Series Analysis and State Space Models 0
masso
1
640
わかりやすいパターン認識2章 / Pattern Recognition Manual Easy to understand SS 02
masso
0
1k
分析環境紹介LT / the introduction of as my analysis env is
masso
0
130
わかりやすいパターン認識1章 / Pattern Recognition Manual Easy to understand SS 01
masso
0
190
データ解析のための統計モデリング入門6章 / Handbook-of-statistical-modeling-for-data-analysis-section6
masso
0
550
DLGが目指すコミュニティの形 / DLG Community Objective
masso
0
2.7k
PowerAutomateによる社員健康状態集計システム / Employee health status tabulation system with Power Automate
masso
0
1.5k
Other Decks in Technology
See All in Technology
PLaMo2シリーズのvLLM実装 / PFN LLM セミナー
pfn
PRO
2
970
ZOZOのAI活用実践〜社内基盤からサービス応用まで〜
zozotech
PRO
0
170
Findy Team+のSOC2取得までの道のり
rvirus0817
0
330
stupid jj tricks
indirect
0
7.9k
FastAPIの魔法をgRPC/Connect RPCへ
monotaro
PRO
1
730
Why Governance Matters: The Key to Reducing Risk Without Slowing Down
sarahjwells
0
100
GC25 Recap+: Advancing Go Garbage Collection with Green Tea
logica0419
1
400
自作LLM Native GORM Pluginで実現する AI Agentバックテスト基盤構築
po3rin
2
250
Trust as Infrastructure
bcantrill
0
320
Oracle Cloud Infrastructure:2025年9月度サービス・アップデート
oracle4engineer
PRO
0
390
Pure Goで体験するWasmの未来
askua
1
180
社内お問い合わせBotの仕組みと学び
nish01
0
150
Featured
See All Featured
Reflections from 52 weeks, 52 projects
jeffersonlam
352
21k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
19
1.2k
It's Worth the Effort
3n
187
28k
Bootstrapping a Software Product
garrettdimon
PRO
307
110k
The Pragmatic Product Professional
lauravandoore
36
6.9k
YesSQL, Process and Tooling at Scale
rocio
173
14k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
34
6.1k
[RailsConf 2023] Rails as a piece of cake
palkan
57
5.9k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.5k
Building Flexible Design Systems
yeseniaperezcruz
329
39k
Java REST API Framework Comparison - PWX 2021
mraible
33
8.8k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
114
20k
Transcript
stacktrace for zerolog users zerolog 使いのための stacktrace Asakusa.go #2 -
Title 2024/05/10 @masso 1
Index type Index struct { Title string PresentationLength float64 //
[minutes] } var indexes = []Index{ {"Self Introduction", 0.5}, {"We're using zerolog", 0.5}, {"The mechanism of stacktrace in zerolog", 1}, {"How to customize stacktrace in zerolog", 1.5}, {"Q&A", 1}, } Asakusa.go #2 - Title 2024/05/10 @masso 2
Self Introduction GitHub: @sota0121 I'm working at Money Forward, Inc.
as a full- stack software engineer. Go, TypeScript, React, Next.js, AWS, k8s, Terraform, etc. Asakusa.go #2 - Title 2024/05/10 @masso 3
We're using zerolog rs/zerolog: Zero Allocation JSON Logger Structured logging
with simple API that is inspired by go.uber.org/zap Main features are here Asakusa.go #2 - Title 2024/05/10 @masso 4
The mechanism of stacktrace in zerolog - basic usage import
( "github.com/rs/zerolog" "github.com/rs/zerolog/pkgerrors" ) zerolog.ErrorStackMarshaler = pkgerrors.MarshalStack func printStackTrace(err error) { // setLogFields ze := log.WithLevel(zerolog.ErrorLevel).Caller(2) // Stacktrace ze.Stack().Err(err).Msg("") } Asakusa.go #2 - Title 2024/05/10 @masso 5
The mechanism of stacktrace in zerolog details main codes rs/zerolog/event.go,
rs/zerolog/globals.go, rs/zerolog/pkgerrors/stacktrace.go stackTracer interface を満たすものを Unwrap しながら探る // pkgerrors/stacktrace.go import "github.com/pkg/errors" func MarshalStack(err error) interface{} { type stackTracer interface { StackTrace() errors.StackTrace } var sterr stackTracer var ok bool for err != nil { sterr, ok = err.(stackTracer) if ok { break } u, ok := err.(interface { Unwrap() error }) if !ok { return nil } err = u.Unwrap() } if sterr == nil { return nil } Asakusa.go #2 - Title 2024/05/10 @masso 6
How to customize stacktrace in zerolog 自前のスタックトレース処理を利用したい場合は、 zerolog.ErrorStackMarshaler に設定する signature:
func(err error) interface{} import "github.com/pkg/errors" func CustomFormatStackTrace(err error) string { if err, ok := err.(interface{ StackTrace() errors.StackTrace }); ok { stack := err.StackTrace() formatted := "" for _, frame := range stack { formatted += fmt.Sprintf("%+v\n", frame) } return formatted } return "No stack trace available" } Asakusa.go #2 - Title 2024/05/10 @masso 7
Q&A Asakusa.go #2 - Title 2024/05/10 @masso 8