Rust

Log Incident Detector in Rust

Create your own real-time voice assistant that detects incidents by monitoring log files and speaks out loud about issues.

⏱️ 12h 20min
📦 37 modules
🎯 Intermediate

What You'll Build

You'll build a real-time incident radio for your backend that tails log files, detects important errors and warnings, and turns them into short, human-friendly summaries. It keeps a rolling memory of past issues, emphasizes the newest problems, and speaks each update aloud so you can stay focused while the system keeps watch.

Run it against any log file (for example, detector sample.log) and hear clear, periodic status reports about what's breaking and how it's evolving in real time.

Log Incident Detector in Rust cover

Learning Objectives

  • Build a real-time log file watcher with tail-like behavior

  • Filter log entries by severity using regular expressions

  • Connect concurrent components with async channels

  • Summarize incidents with OpenAI's chat completion API

  • Convert text summaries to speech with OpenAI's TTS API

  • Play audio alerts through the system speakers with rodio

  • Orchestrate multiple async tasks with futures::select_all

Prerequisites

  • Basic Rust syntax (structs, modules, traits)

  • Familiarity with async/await concepts

  • Understanding of basic I/O operations

Assembly Steps

1

Project Baseline

2

Command-Line Arguments

3

Watcher Foundation

4

Async Runtime

5

File Access and Error Handling

6

Line-by-Line Processing

7

Tail Seek Position

8

Continuous Polling Loop

9

Error Detection with Regex

10

Summarizer Skeleton

11

Watcher-to-Summarizer Channel

12

Summarizer Event Loop

13

Concurrent Task Execution

14

Structured Logging

15

Message Buffer

16

Buffering Incoming Messages

17

Graceful Shutdown

18

Periodic Timer

19

Summary Trigger

20

Historical Context Buffer

21

Chat Completion Interface

22

Buffer Access Layer

23

System Prompt

24

System Message Construction

25

User Message with Context

26

Chat Completion Request

27

OpenAI Client

28

Model Response Handling

29

Message Rotation

30

Sample Log File

31

Text-to-Speech Request

32

Audio Generation

33

Audio Player Skeleton

34

Audio Data Channel

35

Audio Receive Loop

36

Audio Output Stream

37

Audio Playback

Technologies

Rust Tokio Async Log Monitoring OpenAI Text-to-Speech Channels Regex Audio Playback CLI