mirror of
https://github.com/haproxy/haproxy.git
synced 2026-03-09 17:40:49 -04:00
2a0cf52cfc
The script relied on a bash-specific process substitution (< <(...)) to feed socat's output into the read loop. This is replaced with a standard POSIX pipe into a command group. The response parsing is also simplified: instead of iterating over each line with a while loop and echoing them individually, the status line is read first, the "--" separator consumed, and the remaining output is streamed to stderr or discarded as a whole depending on the verbosity level. Could be backported to 3.3 as it makes it more portable, but introduce a slight change in the error format.
118 lines
2.3 KiB
Bash
Executable file
118 lines
2.3 KiB
Bash
Executable file
#!/bin/sh
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set -e
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export VERBOSE=1
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export TIMEOUT=90
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export MASTER_SOCKET="${MASTER_SOCKET:-/var/run/haproxy-master.sock}"
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alert() {
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if [ "$VERBOSE" -ge "1" ]; then
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echo "[ALERT] $*" >&2
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fi
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}
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reload() {
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if [ -S "$MASTER_SOCKET" ]; then
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socat_addr="UNIX-CONNECT:${MASTER_SOCKET}"
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else
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case "$MASTER_SOCKET" in
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*:[0-9]*)
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socat_addr="TCP:${MASTER_SOCKET}"
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;;
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*)
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alert "Invalid master socket address '${MASTER_SOCKET}': expected a UNIX socket file or <host>:<port>"
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return 1
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;;
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esac
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fi
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echo "reload" | socat -t"${TIMEOUT}" "$socat_addr" - | {
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read -r status || { alert "No status received (connection error or timeout after ${TIMEOUT}s)."; exit 1; }
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case "$status" in
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"Success=1") ret=0 ;;
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"Success=0") ret=1 ;;
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*) alert "Unexpected response: '$status'"; exit 1 ;;
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esac
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read -r _ # consume "--"
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if [ "$VERBOSE" -ge 3 ] || { [ "$ret" = 1 ] && [ "$VERBOSE" -ge 2 ]; }; then
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cat >&2
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else
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cat >/dev/null
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fi
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exit "$ret"
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}
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}
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usage() {
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echo "Usage:"
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echo " $0 [options]*"
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echo ""
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echo " Trigger a reload from the master socket"
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echo " Require socat"
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echo " EXPERIMENTAL script!"
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echo ""
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echo "Options:"
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echo " -S, --master-socket <addr> Unix socket path or <host>:<port> (default: ${MASTER_SOCKET})"
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echo " -d, --debug Debug mode, set -x"
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echo " -t, --timeout Timeout (socat -t) (default: ${TIMEOUT})"
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echo " -s, --silent Silent mode (no output)"
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echo " -v, --verbose Verbose output (output from haproxy on failure)"
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echo " -vv Even more verbose output (output from haproxy on success and failure)"
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echo " -h, --help This help"
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echo ""
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echo "Examples:"
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echo " $0 -S ${MASTER_SOCKET} -d ${TIMEOUT}"
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}
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main() {
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while [ -n "$1" ]; do
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case "$1" in
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-S|--master-socket)
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MASTER_SOCKET="$2"
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shift 2
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;;
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-t|--timeout)
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TIMEOUT="$2"
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shift 2
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;;
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-s|--silent)
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VERBOSE=0
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shift
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;;
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-v|--verbose)
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VERBOSE=2
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shift
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;;
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-vv|--verbose)
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VERBOSE=3
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shift
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;;
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-d|--debug)
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DEBUG=1
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shift
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;;
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-h|--help)
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usage "$@"
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exit 0
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;;
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*)
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echo "[ALERT] ($$) : Unknown option '$1'" >&2
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usage "$@"
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exit 1
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;;
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esac
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done
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if [ -n "$DEBUG" ]; then
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set -x
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fi
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}
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main "$@"
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reload
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