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package client
import (
"bytes"
"context"
"encoding/json"
"fmt"
"net/http"
"github.com/rootless-containers/rootlesskit/v2/pkg/api"
"github.com/rootless-containers/rootlesskit/v2/pkg/httputil"
"github.com/rootless-containers/rootlesskit/v2/pkg/port"
)
type Client interface {
HTTPClient() *http.Client
PortManager() port.Manager
Info(context.Context) (*api.Info, error)
}
// New creates a client.
// socketPath is a path to the UNIX socket, without unix:// prefix.
func New(socketPath string) (Client, error) {
hc, err := httputil.NewHTTPClient(socketPath)
if err != nil {
return nil, err
}
return NewWithHTTPClient(hc), nil
}
func NewWithHTTPClient(hc *http.Client) Client {
return &client{
Client: hc,
version: "v1",
dummyHost: "rootlesskit",
}
}
type client struct {
*http.Client
// version is always "v1"
// TODO(AkihiroSuda): negotiate the version
version string
dummyHost string
}
func (c *client) HTTPClient() *http.Client {
return c.Client
}
func (c *client) PortManager() port.Manager {
return &portManager{
client: c,
}
}
func (c *client) Info(ctx context.Context) (*api.Info, error) {
u := fmt.Sprintf("http://%s/%s/info", c.dummyHost, c.version)
req, err := http.NewRequest("GET", u, nil)
if err != nil {
return nil, err
}
req = req.WithContext(ctx)
resp, err := c.HTTPClient().Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if err := httputil.Successful(resp); err != nil {
return nil, err
}
var info api.Info
dec := json.NewDecoder(resp.Body)
if err := dec.Decode(&info); err != nil {
return nil, err
}
return &info, nil
}
type portManager struct {
*client
}
func (pm *portManager) AddPort(ctx context.Context, spec port.Spec) (*port.Status, error) {
m, err := json.Marshal(spec)
if err != nil {
return nil, err
}
u := fmt.Sprintf("http://%s/%s/ports", pm.client.dummyHost, pm.client.version)
req, err := http.NewRequest("POST", u, bytes.NewReader(m))
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", "application/json")
req = req.WithContext(ctx)
resp, err := pm.client.HTTPClient().Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if err := httputil.Successful(resp); err != nil {
return nil, err
}
dec := json.NewDecoder(resp.Body)
var status port.Status
if err := dec.Decode(&status); err != nil {
return nil, err
}
return &status, nil
}
func (pm *portManager) ListPorts(ctx context.Context) ([]port.Status, error) {
u := fmt.Sprintf("http://%s/%s/ports", pm.client.dummyHost, pm.client.version)
req, err := http.NewRequest("GET", u, nil)
if err != nil {
return nil, err
}
req = req.WithContext(ctx)
resp, err := pm.client.HTTPClient().Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if err := httputil.Successful(resp); err != nil {
return nil, err
}
var statuses []port.Status
dec := json.NewDecoder(resp.Body)
if err := dec.Decode(&statuses); err != nil {
return nil, err
}
return statuses, nil
}
func (pm *portManager) RemovePort(ctx context.Context, id int) error {
u := fmt.Sprintf("http://%s/%s/ports/%d", pm.client.dummyHost, pm.client.version, id)
req, err := http.NewRequest("DELETE", u, nil)
if err != nil {
return err
}
req = req.WithContext(ctx)
resp, err := pm.client.HTTPClient().Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if err := httputil.Successful(resp); err != nil {
return err
}
return nil
}
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