log-generator

Logging Service Examples for Rune

This directory contains example services that generate logs for testing Rune's trace command and other log-related features.

Contents

• main.go - A simple logging service using Rune's structured logging library
• log-generator.go - A continuous log generator that outputs logs at different levels and formats
• Dockerfile - Dockerfile for the first example
• Dockerfile-generator - Dockerfile for the log generator
• service.yaml - Rune service manifest for deploying the logging service
• service-generator.yaml - Rune service manifest for deploying the log generator

Building and Running the Docker Images

Building the Log Generator

# From the project root
docker build -t rune-log-generator -f examples/logging/Dockerfile-generator .

Running the Log Generator Locally

docker run -it --name log-generator rune-log-generator

You can adjust the log generation interval using the LOG_INTERVAL environment variable (in milliseconds):

docker run -it --name log-generator -e LOG_INTERVAL=200 rune-log-generator

Deploying to Rune

Deploy the Log Generator Service

rune cast examples/logging/service-generator.yaml

View Logs with the Trace Command

rune trace log-generator

To filter for specific log levels:

rune trace log-generator --pattern="ERROR"

To show only the last 10 log entries:

rune trace log-generator --tail=10

Testing the fixed trace functionality

If you've fixed the trace functionality, you can use these services to verify that logs are being correctly captured and displayed. The log generator produces a continuous stream of well-structured logs at various levels, making it ideal for testing the trace command.

Cleanup

To remove the services from Rune:

rune delete service log-generator

To remove the Docker containers:

docker rm -f log-generator