hcloud-go-sdk
Use when writing Go code to interact with Hetzner Cloud API - automation, infrastructure provisioning, bots, integrations, or programmatic cloud operations
What this skill does
# Hetzner Cloud Go SDK
## Overview
The official Go SDK for Hetzner Cloud provides type-safe access to 23+ resource types with automatic retries, action polling, and comprehensive error handling. Use it for bots, automation, integrations, and complex workflows. For quick CLI operations, use `hetzner:hcloud-cli` instead.
## Quick Setup
```go
import "github.com/hetznercloud/hcloud-go/v2/hcloud"
// Create client
client := hcloud.NewClient(hcloud.WithToken("your-api-token"))
```
```bash
go get github.com/hetznercloud/hcloud-go/v2/hcloud
```
## Quick Reference
| Task | Method |
|------|--------|
| **Servers** | |
| List servers | `client.Server.All(ctx)` |
| Get server | `client.Server.GetByID(ctx, 123)` or `GetByName(ctx, "web")` |
| Create server | `client.Server.Create(ctx, hcloud.ServerCreateOpts{})` |
| Delete server | `client.Server.Delete(ctx, server)` |
| Reboot/Reset | `client.Server.Reboot(ctx, server)` / `Reset(ctx, server)` |
| **Networks** | |
| Create network | `client.Network.Create(ctx, hcloud.NetworkCreateOpts{})` |
| Attach server | `client.Server.AttachToNetwork(ctx, server, opts)` |
| **Volumes** | |
| Create volume | `client.Volume.Create(ctx, hcloud.VolumeCreateOpts{})` |
| Attach volume | `client.Volume.Attach(ctx, volume, server)` |
| **Actions** | |
| Wait for action | `client.Action.WaitFor(ctx, action)` |
| Poll with callback | `client.Action.WaitForFunc(ctx, callback, action)` |
## API Categories
See `references/api-reference.md` for complete method list:
- Servers (create, lifecycle, networking)
- Networks, subnets, routes
- Volumes
- Firewalls and rules
- Load balancers, targets, services
- Floating IPs, Primary IPs
- SSH keys, images, certificates
- DNS zones (GA in v2.30.0)
- Storage boxes (experimental)
## Client Configuration
```go
client := hcloud.NewClient(
hcloud.WithToken("token"), // Required
hcloud.WithEndpoint("https://api.hetzner.cloud/v1"), // Custom endpoint
hcloud.WithApplication("myapp", "1.0.0"), // User-Agent
hcloud.WithDebugWriter(os.Stderr), // Debug logging
hcloud.WithHTTPClient(customClient), // Custom HTTP client
hcloud.WithRetryOpts(hcloud.RetryOpts{ // Retry config
MaxRetries: 5,
BackoffFunc: hcloud.ExponentialBackoff(2, time.Second),
}),
hcloud.WithPollOpts(hcloud.PollOpts{ // Action polling
BackoffFunc: hcloud.ConstantBackoff(500 * time.Millisecond),
}),
)
```
## Common Patterns
See `references/patterns.md` for idiomatic patterns:
- Error handling
- Action polling
- Pagination
- Resource lookups
## Action Handling
All long-running operations return an `Action`:
```go
result, _, err := client.Server.Create(ctx, opts)
if err != nil {
return err
}
// Wait for completion
if err := client.Action.WaitFor(ctx, result.Action); err != nil {
return err
}
// Or with progress callback
err = client.Action.WaitForFunc(ctx,
func(update *hcloud.Action) error {
fmt.Printf("Progress: %.0f%%\n", update.Progress)
return nil
},
result.Action,
)
```
## Error Handling
```go
import "github.com/hetznercloud/hcloud-go/v2/hcloud"
err := someAPICall()
// Check specific error codes
if hcloud.IsError(err, hcloud.ErrorCodeNotFound) {
// Resource doesn't exist
}
// Get error details
if apiErr, ok := err.(*hcloud.APIError); ok {
fmt.Printf("Error: %s - %s\n", apiErr.Code, apiErr.Message)
}
```
Common error codes:
- `ErrorCodeNotFound` - Resource doesn't exist
- `ErrorCodeInvalidInput` - Validation error
- `ErrorCodeForbidden` - Insufficient permissions
- `ErrorCodeRateLimitExceeded` - Rate limit hit (auto-retried)
- `ErrorCodeConflict` - Resource changed (auto-retried)
- `ErrorCodeLocked` - Another action running
## Common Mistakes
| Problem | Solution |
|---------|----------|
| Nil pointer panic | Always check error before using result |
| Action timeout | Use `ctx, cancel := context.WithTimeout(...)` |
| Missing pagination | Use `client.Server.All(ctx)` for complete list |
| Action failed | Check action error with `WaitFor()` return value |
| Rate limiting | SDK auto-retries, but add backoff for bulk ops |
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