nimbus-eth2/tests/simulation/start.sh

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#!/bin/bash
set -eu
# Read in variables
. $(dirname $0)/vars.sh
# Set a default value for the env vars usually supplied by nimbus Makefile
export NUM_VALIDATORS=${VALIDATORS:-100}
export NUM_NODES=${NODES:-9}
export NUM_MISSING_NODES=${MISSING_NODES:-1}
cd "$SIM_ROOT"
mkdir -p "$SIMULATION_DIR"
mkdir -p "$VALIDATORS_DIR"
cd "$GIT_ROOT"
mkdir -p $BUILD_OUTPUTS_DIR
# Run with "SHARD_COUNT=4 ./start.sh" to change these
DEFS="-d:SHARD_COUNT=${SHARD_COUNT:-4} " # Spec default: 1024
DEFS+="-d:SLOTS_PER_EPOCH=${SLOTS_PER_EPOCH:-8} " # Spec default: 64
DEFS+="-d:SECONDS_PER_SLOT=${SECONDS_PER_SLOT:-12} " # Spec default: 6
LAST_VALIDATOR_NUM=$(( $NUM_VALIDATORS - 1 ))
LAST_VALIDATOR="$VALIDATORS_DIR/v$(printf '%07d' $LAST_VALIDATOR_NUM).deposit.json"
if [ ! -f $LAST_VALIDATOR ]; then
if [[ -z "$SKIP_BUILDS" ]]; then
nim c -o:"$VALIDATOR_KEYGEN_BIN" $DEFS -d:release beacon_chain/validator_keygen
fi
$VALIDATOR_KEYGEN_BIN \
--totalValidators=$NUM_VALIDATORS \
--outputDir="$VALIDATORS_DIR" \
--generateFakeKeys=yes
fi
if [[ -z "$SKIP_BUILDS" ]]; then
nim c -o:"$BEACON_NODE_BIN" $DEFS --opt:speed --debuginfo beacon_chain/beacon_node
fi
if [ ! -f $SNAPSHOT_FILE ]; then
$BEACON_NODE_BIN \
--dataDir=$SIMULATION_DIR/node-0 \
createTestnet \
--networkId=1000 \
--validatorsDir=$VALIDATORS_DIR \
--totalValidators=$NUM_VALIDATORS \
--outputGenesis=$SNAPSHOT_FILE \
--outputNetwork=$NETWORK_METADATA_FILE \
--bootstrapAddress=127.0.0.1 \
--bootstrapPort=50000 \
--genesisOffset=5 # Delay in seconds
fi
# Delete any leftover address files from a previous session
if [ -f $MASTER_NODE_ADDRESS_FILE ]; then
rm $MASTER_NODE_ADDRESS_FILE
fi
# multitail support
MULTITAIL="${MULTITAIL:-multitail}" # to allow overriding the program name
USE_MULTITAIL="${USE_MULTITAIL:-no}" # make it an opt-in
type "$MULTITAIL" &>/dev/null || USE_MULTITAIL="no"
# Kill child processes on Ctrl-C by sending SIGTERM to the whole process group,
# passing the negative PID of this shell instance to the "kill" command.
# Trap and ignore SIGTERM, so we don't kill this process along with its children.
if [ "$USE_MULTITAIL" = "no" ]; then
trap '' SIGTERM
trap "kill -- -$$" SIGINT EXIT
fi
COMMANDS=()
LAST_NODE=$(( $NUM_NODES - 1 ))
for i in $(seq 0 $LAST_NODE); do
if [[ "$i" == "0" ]]; then
sleep 0
elif [ "$USE_MULTITAIL" = "no" ]; then
# Wait for the master node to write out its address file
while [ ! -f $MASTER_NODE_ADDRESS_FILE ]; do
sleep 0.1
done
fi
CMD="${SIM_ROOT}/run_node.sh $i"
if [ "$USE_MULTITAIL" != "no" ]; then
if [ "$i" = "0" ]; then
SLEEP="0"
else
SLEEP="2"
fi
# "multitail" closes the corresponding panel when a command exits, so let's make sure it doesn't exit
COMMANDS+=( " -cT ansi -t 'node #$i' -l 'sleep $SLEEP; $CMD; echo [node execution completed]; while true; do sleep 100; done'" )
else
eval $CMD &
fi
done
if [ "$USE_MULTITAIL" != "no" ]; then
eval $MULTITAIL -s 3 -M 0 -x \"Nimbus beacon chain\" "${COMMANDS[@]}"
else
wait # Stop when all nodes have gone down
fi