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https://github.com/kevinveenbirkenbach/computer-playbook.git
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kevinveenbirkenbachandClaude Opus 5.5
891d46d589
The 🐳 Workspace (ubuntu:latest) job on main (run 38879556215, 1b36ef6120)
failed test-unit-python in the hook's second make test:
AssertionError: Regex didn't match: '^ localhost=ok/\d+ms$'
not found in ' localhost=ok/-1612931482679767779ms'
ubuntu:latest is Ubuntu 26.04, whose date is uutils coreutils. uutils
0.7.0 ignores the field width in %3N and prints all nine nanosecond
digits, so `date +%s%3N` yields a 19-digit value instead of epoch
milliseconds. Against main's sampler, uutils 0.7.0 date reports
localhost=ok/7081859ms, and an unpadded nanosecond value turns the
difference negative.
answer_once now takes both timestamps from /proc/uptime, which the
kernel prints with two decimals whatever date the image ships. The
sampler already reads /proc/net/udp, so it was Linux-only before. The
resolution is 10 ms; the same probe reports 10 to 20 ms with uutils
date on PATH.
The new test puts a date on PATH that does not understand %3N; main's
sampler dies on it, the fixed one does not call date for the latency.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
57 lines
1.6 KiB
Bash
Executable File
57 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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# Run 32118850138 could bound the dnsmasq listener loss only to a 6m39s
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# window between two host DNS consumers; one line per 10s pins it to one
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# sample bucket and names which :53 listener (hex local_address) was left.
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set -u
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EXTERNAL_PROBE_NAME=deb.debian.org
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sample_once() {
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socks="$(awk '$2 ~ /:0035$/ && $3 == "00000000:0000" {printf " %s", $2}' "${1}")"
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printf '%s%s\n' "$(date -u '+%Y-%m-%dT%H:%M:%SZ')" "${socks:- none}"
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}
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zone_probe_name() {
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dirs="$(sed -n 's|^[[:space:]]*conf-dir=\([^,[:space:]]*\).*|\1|p' "${1}" 2>/dev/null)"
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# shellcheck disable=SC2086 # a dnsmasq conf-dir path carries no whitespace
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zone="$(grep -rhs '^[[:space:]]*address=/' "${1}" ${dirs} |
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sed -n 's|^[[:space:]]*address=/\([^/]*\)/.*|\1|p' | head -n1)"
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[ -n "${zone}" ] || return 0
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printf 'rescue-probe.%s' "${zone}"
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}
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uptime_ms() {
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read -r up _ </proc/uptime
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printf '%s' "$((${up%.*}${up#*.} * 10))"
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}
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answer_once() {
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name="${1}"
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start="$(uptime_ms)"
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if timeout 3 getent ahosts "${name}" >/dev/null 2>&1; then
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verdict=ok
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else
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verdict=fail
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fi
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printf ' %s=%s/%sms' "${name}" "${verdict}" "$(($(uptime_ms) - start))"
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}
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[ "${DNS53_SAMPLER_LIB:-}" = "1" ] && return 0
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: "${INFINITO_DNS53_SAMPLER_LOG:?INFINITO_DNS53_SAMPLER_LOG must be set}"
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mkdir -p "$(dirname "${INFINITO_DNS53_SAMPLER_LOG}")"
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while :; do
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{
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printf '%s' "$(sample_once /proc/net/udp)"
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inzone="$(zone_probe_name /etc/dnsmasq.conf)"
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if [ -n "${inzone}" ]; then
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answer_once "${inzone}"
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else
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printf ' inzone=unconfigured'
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fi
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answer_once "${EXTERNAL_PROBE_NAME}"
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printf '\n'
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} >>"${INFINITO_DNS53_SAMPLER_LOG}"
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sleep 10
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done
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