4bc6382e0a
The manually formatted date string was very close to ISO8601 already, so just it directly. Conforms to standards, is much easier in code (less manual work), and carries timezone information.
129 lines
4.1 KiB
Bash
Executable file
129 lines
4.1 KiB
Bash
Executable file
#!/usr/bin/env sh
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title=tinystatus
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timeout=10
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tmp="$(mktemp -d)"
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checkfile="${1:-checks.list}"
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incidentsfile="${2:-incidents.list}"
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useragent="User-Agent: Mozilla/5.0 (X11; Linux x86_64; Debian) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36"
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command_exists(){
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if ! command -v "${1}" >/dev/null 2>&1; then
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echo >&2 "Error: ${1} missing. Please install it"
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exit 1
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fi
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}
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get_element(){
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echo "${2}" | awk -v col="${1}" -F'|' '{gsub(/^[ \t]+|[ \t]+$/, "", $col); print $col}'
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}
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check(){
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ctype="${1}"
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host="${2}"
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name="${3}"
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expectedcode="${4}"
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IPv="$(echo "${ctype}" | grep -o '[0-9]$')"
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case "${ctype}" in
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http*)
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statuscode="$(curl -${IPv}sSkLo /dev/null -H "${useragent}" -m "${timeout}" -w "%{http_code}" "${host}" 2> "${tmp}/ko/${name}.error")";;
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ping*)
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ping -W${IPv} "${timeout}" -c 1 "${host}" >/dev/null 2>&1
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statuscode=$?
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[ ${statuscode} -ne ${expectedcode} ] && echo 'Host unreachable' > "${tmp}/ko/${name}.error";;
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port*)
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error="$(nc -w${IPv} "${timeout}" -zv ${host} 2>&1)"
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statuscode=$?
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[ ${statuscode} -ne ${expectedcode} ] && echo "${error}" > "${tmp}/ko/${name}.error";;
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esac
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# verity status and write files
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if [ ${statuscode} -eq ${expectedcode} ]; then
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echo "Status code: ${statuscode}" > "${tmp}/ok/${name}.status"
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else
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echo "Status code: ${statuscode}" > "${tmp}/ko/${name}.status"
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fi
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if [ -s "${tmp}/ko/${name}.error" ]; then
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sed "${tmp}/ko/${name}.error" \
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-e 's,curl: ([0-9]*) ,,' \
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-e 's,.*) failed: ,,' > "${tmp}/ko/${name}.status"
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fi
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}
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command_exists 'curl'
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command_exists 'nc'
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mkdir -p "${tmp}/ok" "${tmp}/ko" || exit 1
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while IFS='\n' read -r line; do
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ctype="$(get_element 1 "${line}")"
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code="$(get_element 2 "${line}")"
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name="$(get_element 3 "${line}")"
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host="$(get_element 4 "${line}")"
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check "${ctype}" "${host}" "${name}" "${code}" &
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done < "${checkfile}"
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wait
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cat << EOF
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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"><title>${title}</title><style>
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body { font-family: segoe ui,Roboto,Oxygen-Sans,Ubuntu,Cantarell,helvetica neue,Verdana,sans-serif; }
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h1 { margin-top: 30px; }
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ul { padding: 0px; }
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li { list-style: none; margin-bottom: 2px; padding: 5px; border-bottom: 1px solid #ddd; }
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.container { max-width: 600px; width: 100%; margin: 15px auto; }
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.panel { text-align: center; padding: 10px; border: 0px; border-radius: 5px; }
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.failed-bg { color: white; background-color: #E25D6A; }
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.success-bg { color: white; background-color: #52B86A; }
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.failed { color: #E25D6A; }
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.success { color: #52B86A; }
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.small { font-size: 80%; }
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.status { float: right; }
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</style></head>
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<body>
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<div class='container'>
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<h1>Global status</h1>
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EOF
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outagenb=$(find ${tmp}/ko -mindepth 1 | grep -c 'status$')
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if [ ${outagenb} -ne 0 ]; then
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echo "<ul><li class='panel failed-bg'>${outagenb} Outage(s)</li></ul>"
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exitcode=1
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else
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echo "<ul><li class='panel success-bg'>All Systems Operational</li></ul>"
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exitcode=0
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fi
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cat << EOF
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<h1>Services</h1>
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<ul>
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EOF
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for file in ${tmp}/ko/*.status; do
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[ -e "${file}" ] || continue
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name="$(basename "${file}" | sed 's,.status$,,')"
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status="$(cat "${file}")"
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echo "<li>${name} <span class='small failed'>(${status})</span><span class='status failed'>Disrupted</span></li>"
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done
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for file in ${tmp}/ok/*.status; do
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[ -e "${file}" ] || continue
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name="$(basename "${file}" | sed 's,.status$,,')"
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echo "<li>${name} <span class='status success'>Operational</span></li>"
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done
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cat << EOF
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</ul>
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<p class=small> Last check: $(date -I'seconds')</p>
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EOF
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if [ -f "${incidentsfile}" ]; then
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echo '<h1>Incidents</h1>'
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if [ -s "${incidentsfile}" ]; then
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sed 's|^\(.*\)$|<p>\1</p>|' "${incidentsfile}"
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else
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echo '<p>No incident reported yet ;)</p>'
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fi
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fi
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cat <<EOF
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</div>
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</body></html>
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EOF
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rm -r "${tmp}" 2>/dev/null
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# Allow the script execution itself to signal success, e.g. for use in healthchecks
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exit ${exitcode}
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