Kafka playtime

Running on Linux

Prefix commands with sudo due to the docker daemon running as root.

There seems to be a bug with docker-compose where it takes ~40ms to connect to the terminal output of the container, so stuff logged to the terminal in this time is lost. The best workaround seems to be adding a delay of 0.1 seconds like so:

sudo ./auto/dev sh -c 'sleep 0.1; scripts/publish'

Setup

./auto/dev/setup

Usage

Shell

To open a shell in the console container that has the Kafka management utils:

./auto/dev/console

Watch events

To watch all raw events, starting from the beginning:

./auto/dev/console scripts/watch

Watch robot commands (same as events)

To watch all raw events, from now onwards:

./auto/dev/robctl watch commands

Starting from the beginning:

./auto/dev/robctl watch commands --history

Watch board

To watch the toy robot world, viewing the board and all robots:

./auto/dev/robctl watch world

Control a robot

To control a robot:

./auto/dev/robctl control ROBOT_NAME

Valid commands are:

place 0 0 s
place 4 4 n
move
left
right

mdub/kafka-playtime