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|
package flymachines
import (
"bytes"
"context"
"encoding/json"
"net/http"
"os"
"within.website/x/web"
)
const (
internalURL = "http://_api.internal:4280"
publicURL = "https://api.machines.dev"
)
type Client struct {
token, apiURL string
cli *http.Client
}
// NewClient returns a new client for the Fly machines API with the given API token and URL.
//
// This is a fairly low-level operation for if you know what URL you need, you probably want to use New instead.
func NewClient(token, apiURL string, cli *http.Client) *Client {
return &Client{token, apiURL, cli}
}
// New returns a new client for the Fly machines API with the given API token.
//
// This will automatically detect if you have access to the internal API either by a
// WireGuard tunnel or by being on the Fly network.
func New(token string, cli *http.Client) *Client {
resp, err := http.Get(internalURL)
if err != nil {
return NewClient(token, publicURL, cli)
}
if resp.StatusCode != http.StatusNotFound {
return NewClient(token, publicURL, cli)
}
return NewClient(token, internalURL, cli)
}
// Do performs a HTTP request with the appropriate authentication and user agent headers.
func (c *Client) Do(req *http.Request) (*http.Response, error) {
req.Header.Set("Authorization", "Bearer "+c.token)
req.Header.Set("User-Agent", "within.website/x/web/fly/flymachines in "+os.Args[0])
return c.cli.Do(req)
}
func (c *Client) doRequestNoResponse(ctx context.Context, method, path string, wantStatusCode int) error {
req, err := http.NewRequestWithContext(ctx, method, c.apiURL+path, nil)
if err != nil {
return err
}
resp, err := c.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode != wantStatusCode {
return web.NewError(wantStatusCode, resp)
}
return nil
}
// zilch returns the zero value of a given type.
func zilch[T any]() T { return *new(T) }
func doJSON[Output any](ctx context.Context, c *Client, method, path string, wantStatusCode int) (Output, error) {
req, err := http.NewRequestWithContext(ctx, method, c.apiURL+path, nil)
if err != nil {
return zilch[Output](), err
}
resp, err := c.Do(req)
if err != nil {
return zilch[Output](), err
}
defer resp.Body.Close()
if resp.StatusCode != wantStatusCode {
return zilch[Output](), web.NewError(wantStatusCode, resp)
}
var output Output
if err := json.NewDecoder(resp.Body).Decode(&output); err != nil {
return zilch[Output](), err
}
return output, nil
}
func doJSONBody[Input any, Output any](ctx context.Context, c *Client, method, path string, input Input, wantStatusCode int) (Output, error) {
buf := new(bytes.Buffer)
if err := json.NewEncoder(buf).Encode(input); err != nil {
return zilch[Output](), err
}
req, err := http.NewRequestWithContext(ctx, method, c.apiURL+path, buf)
if err != nil {
return zilch[Output](), err
}
resp, err := c.Do(req)
if err != nil {
return zilch[Output](), err
}
defer resp.Body.Close()
if resp.StatusCode != wantStatusCode {
return zilch[Output](), web.NewError(wantStatusCode, resp)
}
var output Output
if err := json.NewDecoder(resp.Body).Decode(&output); err != nil {
return zilch[Output](), err
}
return output, nil
}
|
