193 lines
4.3 KiB
Bash
193 lines
4.3 KiB
Bash
#!/usr/bin/env bash
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set -uo pipefail
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###############################################################################
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# check-statut-recette.sh
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#
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# Ce script vérifie la disponibilité de plusieurs applications web définies
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# dans le fichier .env.
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#
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# Fonctionnement global :
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# 1. charge la configuration depuis le fichier .env ;
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# 2. vérifie que le DNS du site est résolu ;
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# 3. effectue une requête HTTP avec curl ;
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# 4. analyse le code HTTP retourné ;
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# 5. écrit le résultat dans un fichier de log local ;
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# 6. envoie une notification Discord avec l’état du service.
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###############################################################################
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#######################################
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# Chargement du .env
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#######################################
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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ENV_FILE="${SCRIPT_DIR}/.env"
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if [[ ! -f "$ENV_FILE" ]]; then
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echo "ERROR: fichier .env introuvable : $ENV_FILE" >&2
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exit 1
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fi
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set -a
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# shellcheck disable=SC1090
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source "$ENV_FILE"
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set +a
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#######################################
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# Vérification des variables requises
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#######################################
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: "${ENV_NAME:?Variable ENV_NAME manquante}"
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: "${APP_LOG_DIR:?Variable APP_LOG_DIR manquante}"
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: "${CHECK_CONNECT_TIMEOUT:?Variable CHECK_CONNECT_TIMEOUT manquante}"
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: "${CHECK_MAX_TIME:?Variable CHECK_MAX_TIME manquante}"
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: "${APP_URLS:?Variable APP_URLS manquante}"
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#######################################
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# Sites à vérifier
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#######################################
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read -r -a SITES <<< "$APP_URLS"
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SCHEME="http"
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CONNECT_TIMEOUT="${CHECK_CONNECT_TIMEOUT}"
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MAX_TIME="${CHECK_MAX_TIME}"
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#######################################
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# Logs
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#######################################
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LOG_DIR="${APP_LOG_DIR}"
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mkdir -p "$LOG_DIR"
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LOG_FILE="${LOG_DIR}/app_health_$(date +'%Y-%m-%d').log"
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#######################################
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# Discord
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#######################################
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DISCORD_WEBHOOK_URL="${DISCORD_WEBHOOK_URL:-}"
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DISCORD_PING="${DISCORD_PING:-@here}"
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discord_ping() {
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local site="$1"
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local status="$2"
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local detail="$3"
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[[ -z "${DISCORD_WEBHOOK_URL:-}" ]] && return 0
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local color icon ping_prefix=""
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if [[ "$status" == "OK" ]]; then
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color="🟢"
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icon="✅"
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else
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color="🔴"
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icon="❌"
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ping_prefix="${DISCORD_PING} "
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fi
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local msg="**${ping_prefix}CHECK APP ${ENV_NAME} $color**\n"
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msg+="Application: ${site}\n"
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msg+="Details: ${detail}"
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local payload
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payload="$(jq -n --arg content "$msg" '{content: $content}')"
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curl -fsS -H "Content-Type: application/json" \
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-d "$payload" \
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"$DISCORD_WEBHOOK_URL" >/dev/null || true
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}
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#######################################
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# Logging
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#######################################
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log_line() {
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printf "%s | %s | %s | %s\n" \
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"$(date +'%Y-%m-%d %H:%M:%S')" "$1" "$2" "$3" | tee -a "$LOG_FILE"
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discord_ping "$2" "$1" "$3"
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}
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#######################################
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# DNS
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#######################################
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dns_ok() {
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getent hosts "$1" >/dev/null 2>&1
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}
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#######################################
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# Check application
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#######################################
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check_site() {
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local host="$1"
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local url="${SCHEME}://${host}/"
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if ! dns_ok "$host"; then
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log_line "DOWN" "$host" "Résolution impossible (getent hosts)"
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return 1
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fi
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local http_code curl_exit stderr
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stderr="$(mktemp)"
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http_code="$(
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curl -sS -o /dev/null \
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-w '%{http_code}' \
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--connect-timeout "$CONNECT_TIMEOUT" \
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--max-time "$MAX_TIME" \
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"$url" 2>"$stderr"
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)"
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curl_exit=$?
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if [ $curl_exit -ne 0 ]; then
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local err
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err="$(head -n 1 "$stderr" | tr -d '\r')"
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rm -f "$stderr"
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log_line "DOWN" "$host" "curl exit=$curl_exit : ${err:-"(aucun)"}"
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return 1
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fi
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rm -f "$stderr"
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if [[ "$http_code" =~ ^[0-9]{3}$ ]]; then
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if [ "$http_code" -ge 200 ] && [ "$http_code" -le 399 ]; then
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log_line "OK" "$host" "HTTP $http_code"
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return 0
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fi
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log_line "DOWN" "$host" "HTTP $http_code (erreur appli)"
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return 1
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fi
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log_line "DOWN" "$host" "Code HTTP inattendu: $http_code"
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return 1
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}
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#######################################
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# Main
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#######################################
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main() {
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local failures=0
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for site in "${SITES[@]}"; do
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if ! check_site "$site"; then
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failures=$((failures + 1))
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fi
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done
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if [ "$failures" -gt 0 ]; then
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exit 2
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fi
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exit 0
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}
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main "$@" |