EOS scripts

run

#!/bin/bash

CMD=$1; shift
EOS=~/dev/eos/eosio

isRunning() {
    s=$(echo $1 |sed 's/./[&]/') # this trick prevents grep from finding itself
    ps aux |grep --silent $s
    [ $? -eq 0 ] && echo Y || echo N
}
walletExists() {
	# cleos can't tell me whether a wallet exists
	# so I have to rely on a failure to open
	# see: https://stackoverflow.com/questions/56284969/how-can-i-determine-if-i-need-to-create-a-wallet
	cleos wallet open > /dev/null 2>&1
	[ $? -eq 0 ] && echo Y || echo N
}
walletUnlock() {
	[[ $(cleos wallet list) != *"*"* ]] && {
		echo "* Unlocking wallet..."
		cat .Wallet |cleos wallet unlock
	}
}
acct() {
	PK=$(tail -1 .Keys |sed 's/Public key: //')
	for acct in "$@"; do
		cleos create account eosio $acct $PK $PK
	done
}
quit() {
	s=$(echo $1 |sed 's/./[&]/') # this trick prevents grep from finding itself
	ps aux |grep $s |
		awk '{print $2}' |
		xargs -I % sh -c '[ ! -z % ] && kill %'
}
start_keosd() {
	nohup keosd > $EOS/logs/keosd.log 2>&1 &
}
start_nodeos() {
	nohup nodeos -e -p eosio \
		--plugin eosio::producer_plugin \
		--plugin eosio::chain_api_plugin \
		--plugin eosio::http_plugin \
		--plugin eosio::history_plugin \
		--plugin eosio::history_api_plugin \
		--data-dir $EOS/data \
		--config-dir $EOS/config \
		--access-control-allow-origin='*' \
		--contracts-console \
		--http-validate-host=false \
		--verbose-http-errors \
		--delete-all-blocks \
		--filter-on='*' > $EOS/logs/nodeos.log 2>&1 &
}
[ "$CMD" == "stop" ] && {
	echo "* Stopping nodeos..."
	quit "nodeos"
	echo "* Stopping keosd..."
	quit "keosd"
	exit 0
}
[ "$CMD" == "start" ] && {
	start_$1
	exit 0
}

# default behaviour (when no arguments are passed)

[ `isRunning keosd` == "N" ] && {
	echo "* Starting keosd..."
	start_keosd
}
[ `isRunning nodeos` == "N" ] && {
	echo "* Starting nodeos..."
	start_nodeos
	sleep 1
}
[ `walletExists` == "N" ] && {
    echo "Creating wallet..."
    cleos wallet create --file .Wallet
}

walletUnlock

[ "$(cleos wallet keys)" == "[]" ] && {
	echo "* Importing development key..."
	PK=5KQwrPbwdL6PhXujxW37FSSQZ1JiwsST4cqQzDeyXtP79zkvFD3
	cleos wallet import --private-key=$PK

	echo "* Creating keys..."
	cleos create key --file .Keys

	echo "* Importing private key..."
	PK=$(head -1 .Keys |sed 's/Private key: //')
	cleos wallet import --private-key=$PK
}

PK=$(tail -1 .Keys |sed 's/Public key: //')
cleos get accounts $PK |grep -q $ACCT
[ $? -eq 1 ] && {
	echo "* Creating system accounts..."
	acct $ACCT
}

echo "* Deferred transaction support..."
cleos set account permission --add-code $ACCT active

echo "* Done"

singleton example

-- t.hpp --
struct [[eosio::table]] _settings {
	bool debug = false;
};
eosio::singleton<name("settings"), _settings> settings;
typedef eosio::multi_index<name("settings"), _settings> M1;	// see note #1

// [1] dummy definitions are used by the ABI generator and required by a bug:
// cf. https://github.com/EOSIO/eosio.cdt/issues/280#issuecomment-439666574

-- t.cpp --
auto r = settings.get();
r.debug = true;
settings.set(r, _self);