yuanbiao
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emqx
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chore: refine boot script with more readable help info

This commit is contained in:
Zaiming (Stone) Shi 2022-04-11 23:48:00 +02:00
parent 5e652217c8
commit 2da27392f7
1 changed files with 166 additions and 80 deletions
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158
bin/emqx
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@ -31,6 +31,12 @@ ERTS_LIB_DIR="$ERTS_DIR/../lib"
# Echo to stderr on errors
echoerr() { echo "$*" 1>&2; }
assert_node_alive() {
if ! relx_nodetool "ping" > /dev/null; then
die "node_is_not_running!" 1
fi
}
check_eralng_start() {
"$BINDIR/$PROGNAME" -noshell -boot "$REL_DIR/start_clean" -s crypto start -s init stop
}
@ -60,16 +66,80 @@ fi
# cuttlefish try to read environment variables starting with "EMQX_"
export CUTTLEFISH_ENV_OVERRIDE_PREFIX='EMQX_'
relx_usage() {
command="$1"
usage() {
local command="$1"
case "$command" in
start)
echo "Start EMQX service in daemon mode"
;;
stop)
echo "Stop the running EMQX program"
;;
console)
echo "Boot up EMQX service in an interactive Erlang shell"
echo "This command needs a tty"
;;
console_clean)
echo "This command does NOT boot up the EMQX service"
echo "It only starts an interactive Erlang shell with all the"
echo "EMQX code available"
;;
foreground)
echo "Start EMQX in foreground mode without an interactive shell"
;;
pid)
echo "Print out EMQX process identifier"
;;
ping)
echo "Check if the EMQX node is up and running"
echo "This command exit with 0 silently if node is running"
;;
escript)
echo "Execute a escript using the Erlang runtime from EMQX package installation"
echo "For example $REL_NAME escript /path/to/my/escript my_arg1 my_arg2"
;;
attach)
echo "This command is applicable when EMQX is started in daemon mode."
echo "It attaches the current shell to EMQX's control console"
echo "through a named pipe."
echo "WARNING: try to use the safer alternative, remote_console command."
;;
remote_console)
echo "Start an interactive shell running an Erlang node which "
echo "hidden-connects to the running EMQX node".
echo "This command is mostly used for troubleshooting."
;;
ertspath)
echo "Print path to Erlang runtime dir"
;;
rpc)
echo "Usge $REL_NAME rpc MODULE FUNCTION [ARGS, ...]"
echo "Connect to the EMQX node and make an Erlang RPC"
echo "This command blocks for at most 60 seconds."
echo "It exits with non-zero code in case of any RPC failure"
echo "including connection error and runtime exception"
;;
rpcterms)
echo "Usge $REL_NAME rpcterms MODULE FUNCTION [ARGS, ...]"
echo "Connect to the EMQX node and make an Erlang RPC"
echo "The result of the RPC call is pretty-printed as an "
echo "Erlang term"
;;
root_dir)
echo "Print EMQX installation root dir"
;;
eval)
echo "Evaluate an Erlang expression in the EMQX node"
;;
versions)
echo "List installed EMQX versions and their status"
;;
unpack)
echo "Usage: $REL_NAME unpack [VERSION]"
echo "Unpacks a release package VERSION, it assumes that this"
echo "release package tarball has already been deployed at one"
echo "of the following locations:"
echo " releases/<relname>-<version>.tar.gz"
echo " releases/<relname>-<version>.zip"
;;
install)
@ -77,7 +147,6 @@ relx_usage() {
echo "Installs a release package VERSION, it assumes that this"
echo "release package tarball has already been deployed at one"
echo "of the following locations:"
echo " releases/<relname>-<version>.tar.gz"
echo " releases/<relname>-<version>.zip"
echo ""
echo " --no-permanent Install release package VERSION but"
@ -93,7 +162,6 @@ relx_usage() {
echo "Upgrades the currently running release to VERSION, it assumes"
echo "that a release package tarball has already been deployed at one"
echo "of the following locations:"
echo " releases/<relname>-<version>.tar.gz"
echo " releases/<relname>-<version>.zip"
echo ""
echo " --no-permanent Install release package VERSION but"
@ -104,18 +172,51 @@ relx_usage() {
echo "Downgrades the currently running release to VERSION, it assumes"
echo "that a release package tarball has already been deployed at one"
echo "of the following locations:"
echo " releases/<relname>-<version>.tar.gz"
echo " releases/<relname>-<version>.zip"
echo ""
echo " --no-permanent Install release package VERSION but"
echo " don't make it permanent"
;;
*)
echo "Usage: $REL_NAME {start|start_boot <file>|ertspath|foreground|stop|restart|reboot|pid|ping|console|console_clean|console_boot <file>|attach|remote_console|upgrade|downgrade|install|uninstall|versions|escript|rpc|rpcterms|eval|root_dir}"
echo "Usage: $REL_NAME COMMAND [help]"
echo ''
echo "Commonly used COMMANDs:"
echo " start: Start EMQX in daemon mode"
echo " console: Start EMQX in an interactive Erlang shell"
echo " foreground: Start EMQX in foreground mode without an interactive shell"
echo " stop: Stop the running EMQX node"
echo " ctl: Administration commands, execute '$REL_NAME ctl help' for more details"
echo ''
echo "More:"
echo " Shell attach: remote_console | attach"
echo " Up/Down-grade: upgrade | downgrade | install | uninstall"
echo " Install info: ertspath | root_dir | versions"
echo " Runtime info: pid | ping | versions"
echo " Advanced: console_clean | escript | rpc | rpcterms | eval"
echo ''
echo "Execute '$REL_NAME COMMAND help' for more information"
;;
esac
}
COMMAND="${1:-}"
if [ -z "$COMMAND" ]; then
usage 'help'
exit 1
elif [ "$COMMAND" = 'help' ]; then
usage 'help'
exit 0
fi
if [ "${2:-}" = 'help' ]; then
## 'ctl' command has its own usage info
if [ "$COMMAND" != 'ctl' ]; then
usage "$COMMAND"
exit 0
fi
fi
# Simple way to check the correct user and fail early
check_user() {
# Validate that the user running the script is the owner of the
@ -135,7 +236,6 @@ check_user() {
fi
}
# Make sure the user running this script is the owner and/or su to that user
check_user "$@"
ES=$?
@ -357,9 +457,10 @@ if [ -z "$NAME_ARG" ]; then
if [ "$IS_BOOT_COMMAND" = 'no' ]; then
# for non-boot commands, inspect vm.<time>.args for node name
# shellcheck disable=SC2012,SC2086
LATEST_VM_ARGS="$(ls -t $RUNNER_DATA_DIR/configs/vm.*.args | head -1)"
LATEST_VM_ARGS="$(ls -t $RUNNER_DATA_DIR/configs/vm.*.args 2>/dev/null | head -1)"
if [ -z "$LATEST_VM_ARGS" ]; then
echo "For command $1, there is no vm.*.args config file found in $RUNNER_DATA_DIR/configs/"
echoerr "For command $1, there is no vm.*.args config file found in $RUNNER_DATA_DIR/configs/"
echoerr "Please make sure the node is initialized (started for at least once)"
exit 1
fi
NODENAME="$(grep -E '^-name' "$LATEST_VM_ARGS" | awk '{print $2}')"
@ -709,50 +810,35 @@ case "$1" in
ertspath)
echo "$ERTS_PATH"
;;
rpc)
# Make sure a node IS running
if ! relx_nodetool "ping" > /dev/null; then
echo "Node is not running!"
exit 1
fi
ctl)
assert_node_alive
shift
relx_nodetool rpc_infinity emqx_ctl run_command "$@"
;;
rpc)
assert_node_alive
shift
relx_nodetool rpc "$@"
;;
rpcterms)
# Make sure a node IS running
if ! relx_nodetool "ping" > /dev/null; then
echo "Node is not running!"
exit 1
fi
assert_node_alive
shift
relx_nodetool rpcterms "$@"
;;
root_dir)
# Make sure a node IS running
if ! relx_nodetool "ping" > /dev/null; then
echo "Node is not running!"
exit 1
fi
assert_node_alive
shift
relx_nodetool "eval" 'code:root_dir()'
;;
eval)
# Make sure a node IS running
if ! relx_nodetool "ping" > /dev/null; then
echo "Node is not running!"
exit 1
fi
assert_node_alive
shift
relx_nodetool "eval" "$@"
;;
*)
relx_usage "$1"
usage "$COMMAND"
exit 1
;;
esac