Monitoring framework for minute-by-minute service testing, including live dashboard

script/monitor/setupMonitoringHost.sh

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+#!/bin/bash
+
+[ "$(id -u)" != "0" ] \
+    && sudo "${0}" \
+    && exit 0
+
+
+
+_SETUP="$(readlink -f "${0}" 2> /dev/null)"
+
+# Folders always ends with an tailing '/'
+_CIS_ROOT="${_SETUP%%/script/monitor/*}/"             #Removes longest  matching pattern '/script/monitor/*' from the end
+_DOMAIN="$("${_CIS_ROOT:?"Missing CIS_ROOT"}core/printOwnDomain.sh")"
+_DEFINITIONS="${_CIS_ROOT:?"Missing CIS_ROOT"}definitions/${_DOMAIN:?"Missing DOMAIN"}/"
+
+
+
+function checkPreconditions() {
+    [ -d "${_DEFINITIONS:?"Missing DEFINITIONS"}monitor/checks" ] \
+        && return 0
+
+    echo "No folder for your defined checks found: ${_DEFINITIONS:?"Missing DEFINITIONS"}monitor/checks"
+    echo "Please create it and add all your custom monitoring checks there, following this convention: 'NAME_OF_THE_CHECK.on'"
+    echo "A check has to be switched 'on' to be executed, so you can rename a check to 'NAME_OF_THE_CHECK.off' and it will be ignored."
+    echo
+    echo "You can copy the file '/cis/script/monitor/checks/EXAMPLE_CHECK.off' to your check definitions folder and modify it."
+    return 1
+}
+
+
+
+function printSelectedDefinition() {
+    local _FILE_DEFINED_DOMAIN _FILE_DEFINED_DEFAULT
+    _FILE_DEFINED_DOMAIN="${_DEFINITIONS:?"Missing DEFINITIONS"}monitor/${1:?"Missing CURRENT_FULLFILE"}"
+    _FILE_DEFINED_DEFAULT="${_CIS_ROOT:?"Missing CIS_ROOT"}script/monitor/${1:?"Missing CURRENT_FULLFILE"}"
+    readonly _FILE_DEFINED_DOMAIN _FILE_DEFINED_DEFAULT
+
+    [ -s "${_FILE_DEFINED_DOMAIN}" ] \
+        && echo "${_FILE_DEFINED_DOMAIN}" \
+        && return 0
+
+    [ -s "${_FILE_DEFINED_DEFAULT}" ] \
+        && echo "${_FILE_DEFINED_DEFAULT}" \
+        && return 0
+
+    return 1
+}
+
+function setupPublicFile() {
+    ! [ -d "/var/www/html" ] \
+        && echo "Missing folder '/var/www/html'. Is a webserver installed?" \
+        && return 1
+
+    [ -L "/var/www/html/${1:?"Missing filename"}" ] \
+        && [ "$(readlink -f /var/www/html/${1:?"Missing filename"})" == "$(printSelectedDefinition ${1:?"Missing filename"})" ] \
+        && echo "Link '/var/www/html/${1:?"Missing filename"}' already exists pointing to the expected file:" \
+        && echo "  - '$(readlink -f /var/www/html/${1:?"Missing filename"})'" \
+        && return 0
+
+    ln -f -s "$(printSelectedDefinition ${1:?"Missing filename"})" "/var/www/html/${1:?"Missing filename"}" \
+        && echo "Link '/var/www/html/${1:?"Missing filename"}' created successfully:" \
+        && echo "  - '$(readlink -f /var/www/html/${1:?"Missing filename"})'" \
+        && return 0
+}
+
+echo "Setup the monitoring host that monitors the others ... " \
+    && checkPreconditions \
+    && setupPublicFile "check.html" \
+    && setupPublicFile "check.css" \
+    && setupPublicFile "logo.png" \
+    && exit 0
+
+exit 1