if [[ ! -d "$DIRECTORY/logs" ]]; then mkdir $DIRECTORY/logs; fi
# create a pid, this way you can ps aux | grep leaderScheduleCheck.sh to see if script is running
echo $ > "$DIRECTORY/logs/leaderScheduleCheck.pid";
# Set your own stake pool ID
# Set the network magic value as needed for the testnet environment that you want to use
# For details on available testnet environments, see https://book.world.dev.cardano.org/environments.html
# Edit variable with $TESTNET for Testnet and $MAINNET for Mainnet
# check for vrf.skey presence
if [[ ! -f "$DIRECTORY/vrf.skey" ]]; then echo "vrf.skey not found"; exit 127; fi
CCLI=$(which cardano-cli)
if [[ -z $CCLI ]]; then echo "cardano-cli command cannot be found, exiting..."; exit 127; fi
if [[ -z $JQ ]]; then echo "jq command cannot be found, exiting..."; exit 127; fi
read -ra BYRON_GENESIS <<< "$(jq -r '[ .startTime, .protocolConsts.k, .blockVersionData.slotDuration ] |@tsv' < $DIRECTORY/$network-byron-genesis.json)"
if [[ -z $BYRON_GENESIS ]]; then echo "BYRON GENESIS config file not loaded correctly"; exit 127; fi
if [ $network = $TESTNET ]; then
network_magic="--testnet-magic $MAGICNUMBER"
elif [ $network = $MAINNET ]; then
network_magic="--mainnet"
echo "Incorrect network selected, please use $TESTNET or $MAINNET network type"; exit 1
# Check that node is synced
sync_progress=$($CCLI query tip $network_magic | jq -r ".syncProgress")
if [[ $sync_progress == "100.00" ]]; then
function getCurrentEpoch(){
echo $($CCLI query tip $network_magic | jq -r ".epoch")
# Get epoch start time based on current one
function getEpochStartTime(){
byron_genesis_start_time=${BYRON_GENESIS[0]}
byron_k=${BYRON_GENESIS[1]}
byron_epoch_length=$(( 10 * byron_k ))
byron_slot_length=${BYRON_GENESIS[2]}
echo $(( $byron_genesis_start_time + (($(getCurrentEpoch) * $byron_epoch_length * $byron_slot_length) / 1000) ))
# Get epoch end time based on the current one
function getEpochEndTime(){
#calculate currentEpoch Start time + 5 days of epoch duration - 10 minutes(600s) to not overlap with next epoch
echo $(( $(getEpochStartTime)+(5*86400)-(600) ))
function getCurrentTime(){
echo $(printf '%(%s)T\n' -1)
# Convert timestamps to UTC time
function timestampToUTC(){
echo $(date +"%D %T" -ud @$timestamp)
# Find the correct time to run the leaderslot check command
function getLeaderslotCheckTime(){
epochStartTime=$(getEpochStartTime)
epochEndTime=$(getEpochEndTime)
# epoch completion percent to check for --next epoch leaderslots
checkTimestamp=$(( $epochStartTime+($percentage*($epochEndTime-$epochStartTime)/100) ))
# Function to make the script sleep until check need to be executed
if [[ $sleepSeconds -gt 0 ]]; then
echo "Script is going to sleep for: $sleepSeconds seconds"
# Check leaderschedule of next epoch
function checkLeadershipSchedule(){
next_epoch=$(( $(getCurrentEpoch)+1 ))
currentTime=$(getCurrentTime)
echo "Check is running at: $(timestampToUTC $currentTime) for epoch: $next_epoch"
$CCLI query leadership-schedule $network_magic --genesis "$DIRECTORY/$network-shelley-genesis.json" --stake-pool-id $STAKE_POOL_ID --vrf-signing-key-file "$DIRECTORY/vrf.skey" --next > "$DIRECTORY/logs/leaderSchedule_$next_epoch.txt"
echo "Current epoch: $(getCurrentEpoch)"
epochStartTimestamp=$(getEpochStartTime)
echo "Epoch start time: $(timestampToUTC $epochStartTimestamp)"
epochEndTimestamp=$(getEpochEndTime)
echo "Epoch end time: $(timestampToUTC $epochEndTimestamp)"
currentTime=$(getCurrentTime)
echo "Current cron execution time: $(timestampToUTC $currentTime)"
timestampCheckLeaders=$(getLeaderslotCheckTime)
echo "Next check time: $(timestampToUTC $timestampCheckLeaders)"
timeDifference=$(( $timestampCheckLeaders-$currentTime ))
if [ -f "$DIRECTORY/logs/leaderSchedule_$(( $(getCurrentEpoch)+1 )).txt" ]; then
echo "Check already done, check logs for results"; exit 1
elif [[ $timeDifference -gt 86400 ]]; then
echo "Too early to run the script, wait for next cron scheduled job"; exit 1
elif [[ $timeDifference -gt 0 ]] && [[ $timeDifference -le 86400 ]]; then
sleepUntil $timeDifference
echo "Check is starting on $(timestampToUTC $(getCurrentTime))"
echo "Script ended, schedule logged inside file: leaderSchedule_$(( $(getCurrentEpoch)+1 )).txt"
elif [[ $timeDifference -lt 0 ]] && [ ! -f "$DIRECTORY/logs/leaderSchedule_$(( $(getCurrentEpoch)+1 )).txt" ]; then
echo "Check is starting on $(timestampToUTC $(getCurrentTime))"
echo "Script ended, schedule logged inside file: leaderSchedule_$(( $(getCurrentEpoch)+1 )).txt"
echo "There were problems on running the script, check that everything is working fine"; exit 1
echo "Node not fully synced."; exit 1