#!/bin/sh
set -e

export PROMETHEUS_BEARER_TOKEN=/var/run/secrets/kubernetes.io/serviceaccount/token
if [ -f $PROMETHEUS_BEARER_TOKEN ]; then
    export TOKEN=$(cat $PROMETHEUS_BEARER_TOKEN)
    export POD_API_URL=https://$KUBERNETES_SERVICE_HOST:$KUBERNETES_SERVICE_PORT/api/v1/namespaces/$POD_NAMESPACE/pods/$HOSTNAME
    export NODE_NAME=$(curl -s $POD_API_URL --header "Authorization: Bearer $TOKEN" --insecure | grep nodeName | cut -c 18- | tr -d '",')
    export AGENT_HOSTNAME=$NODE_NAME
    echo "Setting Agent Hostname to: $AGENT_HOSTNAME"
    export PROMETHEUS_URLS="\"https://$KUBERNETES_SERVICE_HOST:$KUBERNETES_SERVICE_PORT/api/v1/proxy/nodes/$NODE_NAME/metrics\", \"https://$KUBERNETES_SERVICE_HOST:$KUBERNETES_SERVICE_PORT/metrics\""
    echo "Setting PROMETHEUS_URLS to: $PROMETHEUS_URLS"
fi

echo "Building config.toml!"
envtpl -in config.toml.tpl | sed  '/^$/d' > config.toml

echo "Finished building toml..."
echo "###########################################"
echo "###########################################"
cat config.toml
echo "###########################################"
echo "###########################################"
telegraf -config config.toml -quiet