initial commit

hana_backup.sh

@@ -0,0 +1,83 @@
+#!/bin/bash
+# =============================================================================
+# SAP HANA Backup Status Monitoring Script
+# Checks last successful backup age
+# =============================================================================
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd)"
+SCRIPT_NAME="hana_backup"
+
+# Load configuration
+source "${SCRIPT_DIR}/hana.conf"
+source "${SCRIPT_DIR}/hana_lib.sh"
+
+# Acquire lock
+LOCK_FILE=$(acquire_lock "$SCRIPT_NAME")
+if [ $? -ne 0 ]; then
+    exit 1
+fi
+trap 'release_lock "$LOCK_FILE"' EXIT
+
+log_message "$SCRIPT_NAME" "Starting backup status check..."
+
+# Check if hdbsql is available
+if [ ! -x "$HDBSQL_PATH" ]; then
+    log_message "$SCRIPT_NAME" "ERROR: hdbsql not found or not executable at ${HDBSQL_PATH}"
+    send_notification_if_changed "$SCRIPT_NAME" "hana_hdbsql_path_backup" "HANA Monitor Error" "hdbsql not found or not executable at ${HDBSQL_PATH}" "true" "HDBSQL_ERROR"
+    exit 1
+fi
+
+# SQL Query for last successful backup
+BACKUP_SQL="SELECT TOP 1 SYS_START_TIME FROM M_BACKUP_CATALOG WHERE ENTRY_TYPE_NAME = 'complete data backup' AND STATE_NAME = 'successful' ORDER BY SYS_START_TIME DESC"
+
+# Execute SQL query as HANA user with improved error handling
+backup_result=$(su - "$HANA_USER" -c "$HDBSQL_PATH -U $HANA_USER_KEY -j -a -x \"$BACKUP_SQL\"" 2>&1)
+sql_status=$?
+
+if [ $sql_status -ne 0 ]; then
+    log_message "$SCRIPT_NAME" "ERROR: Failed to execute backup query. Exit code: ${sql_status}"
+    send_notification_if_changed "$SCRIPT_NAME" "hana_backup_query_error" "HANA Backup Error" "Failed to execute backup query. Exit code: ${sql_status}" "true" "QUERY_ERROR"
+    exit 1
+fi
+
+last_backup_date=$(echo "$backup_result" | tr -d '"' | sed 's/\..*//')
+
+if [[ -z "$last_backup_date" || "$last_backup_date" == *"error"* || "$last_backup_date" == *"Error"* ]]; then
+    message="No successful complete data backup found for ${COMPANY_NAME} HANA."
+    log_message "$SCRIPT_NAME" "CRITICAL: ${message}"
+    send_notification_if_changed "$SCRIPT_NAME" "hana_backup_status" "HANA Backup" "$message" "true" "NO_BACKUP"
+    exit 1
+fi
+
+# Clear any previous query error state
+send_notification_if_changed "$SCRIPT_NAME" "hana_backup_query_error" "HANA Backup" "Backup query successful." "false" "OK"
+
+# Calculate backup age
+last_backup_epoch=$(date -d "$last_backup_date" +%s 2>/dev/null)
+if [ $? -ne 0 ]; then
+    log_message "$SCRIPT_NAME" "ERROR: Failed to parse backup date: ${last_backup_date}"
+    send_notification_if_changed "$SCRIPT_NAME" "hana_backup_status" "HANA Backup" "Failed to parse backup date: ${last_backup_date}" "true" "DATE_PARSE_ERROR"
+    exit 1
+fi
+
+current_epoch=$(date +%s)
+threshold_seconds=$((BACKUP_THRESHOLD_HOURS * 3600))
+age_seconds=$((current_epoch - last_backup_epoch))
+age_hours=$((age_seconds / 3600))
+
+if [ $age_seconds -lt 0 ]; then
+    log_message "$SCRIPT_NAME" "WARNING: Backup timestamp is in the future. Possible clock skew."
+    age_hours=0
+fi
+
+if [ $age_seconds -gt $threshold_seconds ]; then
+    message="Last successful HANA backup for ${COMPANY_NAME} is ${age_hours} hours old, which exceeds the threshold of ${BACKUP_THRESHOLD_HOURS} hours. Last backup was on: ${last_backup_date}."
+    log_message "$SCRIPT_NAME" "CRITICAL: ${message}"
+    send_notification_if_changed "$SCRIPT_NAME" "hana_backup_status" "HANA Backup" "$message" "true" "${age_hours}h"
+else
+    message="Last successful backup is ${age_hours} hours old (Threshold: ${BACKUP_THRESHOLD_HOURS} hours)."
+    log_message "$SCRIPT_NAME" "SUCCESS: ${message}"
+    send_notification_if_changed "$SCRIPT_NAME" "hana_backup_status" "HANA Backup" "$message" "false" "OK"
+fi
+
+log_message "$SCRIPT_NAME" "Backup check complete."