add hetznernetworking provider

[likt0r]

Add Hetzner Networking DNS Provider

Overview

Adds support for the new Hetzner Cloud DNS API with the hetznernetworking provider. This is a separate provider from the existing hetzner provider, offering modern RRSet-based operations and wildcard domain support.

Features

• Wildcard domain support (*.example.com)
• Bearer token authentication
• RRSet-based API operations
• IPv4/IPv6 support
• Configurable TTL

Configuration

{
  "settings": [
    {
      "provider": "hetznernetworking",
      "zone_identifier": "example.com",
      "domain": "sub.example.com",
      "token": "your-api-token",
      "ttl": 600,
      "ip_version": "ipv4"
    }
  ]
}

API Endpoints

• GET /v1/zones/{zone}/rrsets/{name}/{type} - Get records
• POST /v1/zones/{zone}/rrsets/{name}/{type}/actions/add_records - Create records
• POST /v1/zones/{zone}/rrsets/{name}/{type}/actions/set_records - Update records

Testing

• Compiles without errors
• Wildcard domains working
• API integration verified

Breaking Changes

None - purely additive change. Legacy hetzner provider remains unchanged.

Documentation

• Added docs/hetznernetworking.md
• References: Hetzner Cloud DNS API

[JarodSch]

Can someone merge this?

[NiklasReisser]

I'd be interested in this as well.

Out of curiosity (I don't know much about Go):

• What is the hetznercloud provider used for? It seems incomplete.
• When trying to build the docker container, I get a few linter errors (after removing hetznercloud, which gives other errors):

internal/provider/providers/hetznernetworking/create.go:30: the line is 137 characters long, which exceeds the maximum of 120 characters. (lll)
	urlString := fmt.Sprintf("https://api.hetzner.cloud/v1/zones/%s/rrsets/%s/%s/actions/add_records", p.zoneIdentifier, rrName, recordType)
internal/provider/providers/hetznernetworking/update.go:32: the line is 137 characters long, which exceeds the maximum of 120 characters. (lll)
	urlString := fmt.Sprintf("https://api.hetzner.cloud/v1/zones/%s/rrsets/%s/%s/actions/set_records", p.zoneIdentifier, rrName, recordType)
internal/provider/providers/hetznernetworking/update.go:19:2: unused-parameter: parameter 'recordID' seems to be unused, consider removing or renaming it as _ (revive)
	recordID string, ip netip.Addr,
	^
internal/provider/providers/hetznernetworking/getrecord.go:102:14: do not define dynamic errors, use wrapped static errors instead: "fmt.Errorf(\"domain %s is not a subdomain of zone %s\", domain, zone)" (err113)
		return "", fmt.Errorf("domain %s is not a subdomain of zone %s", domain, zone)
		           ^
The command '/bin/sh -c golangci-lint run --timeout=10m' returned a non-zero code: 1

Am I doing something wrong?

[suntorytimed]

I have built the container and pushed it as suntorytimed/ddns-updater:hetzner-cloud-dns to Docker Hub and replaced the container and provider information on my TrueNAS homeserver. Works flawlessly. Thank you @likt0r for your work. @qdm12 would be nice to get this merged and pushed officially.