Periodically Restart Agent #222

	name: Periodically Restart Agent

	# This action periodically restarts the agent.
	# Twitch likes to expire tokens if the agent runs for too long, so every couple of days we restart
	# a random instance to ensure there's always a fresh agent available.

	on:
	schedule:
	- cron: "0 12 * * 1,3,5" # every Monday, Wednesday, and Friday at noon UTC
	workflow_dispatch:

	jobs:
	restart:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	id-token: write
	steps:
	- uses: google-github-actions/auth@v1
	with:
	workload_identity_provider: "projects/832669896677/locations/global/workloadIdentityPools/github-actions/providers/github-actions"
	service_account: "[email protected]"

	- uses: "google-github-actions/setup-gcloud@v1"

	- run: \|
	INSTANCES=$(gcloud compute instance-groups managed list-instances agent-small-us-west1 --region=us-west1)
	NUM_HEALTHY_INSTANCES=$(echo "$INSTANCES" \| grep "HEALTHY" \| wc -l)

	echo "$INSTANCES"

	echo "Number of healthy instances: $NUM_HEALTHY_INSTANCES"

	# if there are fewer than three healthy instances, don't do anything
	if [ "$NUM_HEALTHY_INSTANCES" -lt 3 ]; then
	echo "Not enough healthy instances, not restarting"
	exit 0
	fi

	# otherwise, pick an instance at random
	INSTANCE=$(echo "$INSTANCES" \| tail -n +2 \| shuf -n 1 \| cut -d ' ' -f 1)
	echo "Restarting instance: $INSTANCE"

	# restart the instance
	gcloud compute instance-groups managed recreate-instances agent-small-us-west1 --region=us-west1 --instances=$INSTANCE

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