bulk-transfer.sh

#!/bin/bash

print_usage () {
  echo "Sends bulk transfers on the Casper blockchain network reading the recipients and amounts from a CSV file formatted as ``recipient_public_key,amount_in_motes``"
  echo
  echo "USAGE:"
  echo "  bulk-transfer.sh [ARGUMENTS]"
  echo
  echo "ARGUMENTS:"
  echo "  --node-address  Casper node to run RPC requests against (optional, default is 127.0.0.1)"
  echo "  --keys-path     Path to the directory with Casper keys of the sender account"
  echo "  --in            Input CSV file in the <recipient_public_key>,<amount_in_motes> format"
  echo "  --out           Output CSV file (optional)"
  echo
  echo "EXAMPLE:"
  echo "  bulk-transfer.sh --keys-path=~/casper-keys" --in=~/recipients.csv --out=~/results.csv
  echo
  echo "DEPENDENCIES:"
  echo "  casper-client   To make RPC requests to the network"
  echo "  jq              To parse RPC responses"
  echo
  echo "DISCLAIMER:"
  echo "Provided as is and with no warranties, or guarantees to be bug-free."
}

ensure_has_installed () {
  HAS_INSTALLED=$(which "$1")
  if [ "$HAS_INSTALLED" = "" ]; then
    echo "Please install $1"
    exit 1
  fi
}

ensure_has_installed "casper-client"
ensure_has_installed "jq"

while [ $# -gt 0 ]; do
  case "$1" in
    --node-address=*)
      NODE_ADDRESS="${1#*=}"
      ;;
    --keys-path=*)
      KEYS_PATH="${1#*=}"
      ;;
    --in=*)
      IN="${1#*=}"
      ;;
    --out=*)
      OUT="${1#*=}"
      ;;
    *)
      print_usage; exit 1
      ;;
  esac
  shift
done

if [ -z ${NODE_ADDRESS+x} ]; then NODE_ADDRESS=127.0.0.1; fi
if [ -z ${KEYS_PATH+x} ]; then print_usage; exit 1; fi
if [ -z ${IN+x} ]; then print_usage; exit 1; fi
if [ -z ${OUT+x} ]; then OUT=/dev/null; fi


CHAIN_NAME=$(curl -s http://$NODE_ADDRESS:8888/status | jq -r '.chainspec_name')

# Validate the input
LINE=1
while IFS="," read PUBLIC_KEY MOTES ; do
  if (( ${#PUBLIC_KEY} != 66 )) && (( ${#PUBLIC_KEY} != 68 )); then
    echo "Please check if you put a valid recipient public key on the line $LINE"
    exit 2
  fi

  if (( ${#MOTES} < 9 )); then
    echo "Please check if you put a correct rewards amount on the line $LINE. It is not possible to send less than 2.5 CSPR."
    exit 2
  fi

  ((LINE++))
done < $IN

# Send rewards
echo "public_key,motes,deploy_hash,transfer_id" > $OUT

TRANSFER_ID=1
while IFS="," read PUBLIC_KEY MOTES ; do
  DEPLOY_HASH=$(sudo -u casper casper-client transfer \
    --chain-name "$CHAIN_NAME" \
    --node-address http://$NODE_ADDRESS:7777 \
    --secret-key "$KEYS_PATH/secret_key.pem" \
    --transfer-id "$TRANSFER_ID" \
    -a "$MOTES" \
    -t "$PUBLIC_KEY" \
    -p 10000 | jq -r '.result | .deploy_hash')

  echo "Transferred $MOTES motes to $PUBLIC_KEY (deploy hash $DEPLOY_HASH, transfer id $TRANSFER_ID)"
  echo "$PUBLIC_KEY,$MOTES,$DEPLOY_HASH,$TRANSFER_ID" >> $OUT

  ((TRANSFER_ID++))
done < $IN