Add error handling in script

nodes/heptifili/dyndns.nix

@@ -21,30 +21,31 @@
     script = ''
       zone_id=7DbNys3Lx4MWjg4eXEvMG4
       # Get record ids
-      recordid_ipv4=$(${pkgs.curl}/bin/curl -s "https://dns.hetzner.com/api/v1/records?zone_id=$zone_id" -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" | ${pkgs.jq}/bin/jq '.records.[] | select(.name=="ip.heptifili") | select(.type=="A") | .id' | tr -d '"')
-      recordid_ipv6=$(${pkgs.curl}/bin/curl -s "https://dns.hetzner.com/api/v1/records?zone_id=$zone_id" -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" | ${pkgs.jq}/bin/jq '.records.[] | select(.name=="ip.heptifili") | select(.type=="AAAA") | .id' | tr -d '"')
+      recordid_ipv4=$(${pkgs.curl}/bin/curl -s "https://dns.hetzner.com/api/v1/records?zone_id=$zone_id" -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" | ${pkgs.jq}/bin/jq '.records.[] | select(.name=="ip.heptifili") | select(.type=="A") | .id' | tr -d '"') || (err=$?; printf "Get recordid A failed with %s" "$err"; exit 1)
+      recordid_ipv6=$(${pkgs.curl}/bin/curl -s "https://dns.hetzner.com/api/v1/records?zone_id=$zone_id" -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" | ${pkgs.jq}/bin/jq '.records.[] | select(.name=="ip.heptifili") | select(.type=="AAAA") | .id' | tr -d '"') || (err=$?; printf "Get recordid AAAA failed with %s" "$err"; exit 1)
       # Get in use IP-addresses
-      current_ipv4=$(${pkgs.curl}/bin/curl -s4 https://ip.hetzner.com)
-      current_ipv6=$(${pkgs.curl}/bin/curl -s6 https://ip.hetzner.com)
+      current_ipv4=$(${pkgs.curl}/bin/curl -s4 https://ip.hetzner.com) || (err=$?; printf "Get current IPv4 failed with %s" "$err"; exit 1)
+      current_ipv6=$(${pkgs.curl}/bin/curl -s6 https://ip.hetzner.com) || (err=$?; printf "Get current IPv6 failed with %s" "$err"; exit 1)
       # Get IP-addresses set in DNS
-      dns_ipv4=$(${pkgs.curl}/bin/curl -s "https://dns.hetzner.com/api/v1/records/$recordid_ipv4" -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" | ${pkgs.jq}/bin/jq ".record.value" | tr -d '"')
-      dns_ipv6=$(${pkgs.curl}/bin/curl -s "https://dns.hetzner.com/api/v1/records/$recordid_ipv6" -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" | ${pkgs.jq}/bin/jq ".record.value" | tr -d '"')
+      dns_ipv4=$(${pkgs.curl}/bin/curl -s "https://dns.hetzner.com/api/v1/records/$recordid_ipv4" -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" | ${pkgs.jq}/bin/jq ".record.value" | tr -d '"') || (err=$?; printf "Get A record failed with %s" "$err"; exit 1)
+      dns_ipv6=$(${pkgs.curl}/bin/curl -s "https://dns.hetzner.com/api/v1/records/$recordid_ipv6" -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" | ${pkgs.jq}/bin/jq ".record.value" | tr -d '"') || (err=$?; printf "Get AAAA record failed with %s" "$err"; exit 1)
 
       if [ $current_ipv4 = $dns_ipv4 ]
       then
         echo "IPv4 already up to date"
       else
         echo "$dns_ipv4 => $current_ipv4"
-        ${pkgs.curl}/bin/curl -s -X "PUT" "https://dns.hetzner.com/api/v1/records/$recordid_ipv4" -H 'Content-Type: application/json' -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" -d $'{"value": "'$current_ipv4'", "ttl": 60, "type": "A", "name": "'ip.heptifili'", "zone_id": "'$zone_id'"}'
+        ${pkgs.curl}/bin/curl -s -X "PUT" "https://dns.hetzner.com/api/v1/records/$recordid_ipv4" -H 'Content-Type: application/json' -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" -d $'{"value": "'$current_ipv4'", "ttl": 60, "type": "A", "name": "'ip.heptifili'", "zone_id": "'$zone_id'"}' || (err=$?; printf "Updating A record failed with %s" "$err"; exit 1)
       fi
 
       if [ $current_ipv6 = $dns_ipv6 ]
       then
         echo "IPv6 already up to date"
       else
         echo "$dns_ipv6 => $current_ipv6"
-        ${pkgs.curl}/bin/curl -s -X "PUT" "https://dns.hetzner.com/api/v1/records/$recordid_ipv6" -H 'Content-Type: application/json' -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" -d $'{"value": "'$current_ipv6'", "ttl": 60, "type": "AAAA", "name": "'ip.heptifili'", "zone_id": "'$zone_id'"}'
+        ${pkgs.curl}/bin/curl -s -X "PUT" "https://dns.hetzner.com/api/v1/records/$recordid_ipv6" -H 'Content-Type: application/json' -H "Auth-API-Token: $(cat ${config.sops.secrets."dyndns/hetzner_api_key".path})" -d $'{"value": "'$current_ipv6'", "ttl": 60, "type": "AAAA", "name": "'ip.heptifili'", "zone_id": "'$zone_id'"}' || (err=$?; printf "Updating AAAA record failed with %s" "$err"; exit 1)
       fi
+      exit 0
     '';
     serviceConfig = {
       Type = "oneshot";