#!/bin/sh
# runNginx.sh script is used to perform setup steps, as well as run nginx
# 1. Apply environment variables to the nginx configuration template files
# 2. Wait for an applicable FIFO file to be created
# 3. Start up nginx

set -eu

envsubst '$NAMESPACE$WS_SERVER_LOGS' < /etc/nginx/templates/novnc.conf.template > /etc/nginx/conf.d/novnc.conf

echo "Waiting for creation of log FIFO file"

# We need to wait for the log FIFO file to be created by the log processor
# component first. If we don't wait here, nginx might start up first and attempt
# to open the file with the O_CREAT flag. If the file is missing at this point,
# it will be created by nginx as a normal file rather than the required FIFO.

while :; do
    if [ -p "${WS_SERVER_LOGS}" ]; then
        break
    fi

    sleep 1
done

echo "Found log FIFO file"

nginx -g 'daemon off;'