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client.go
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client.go
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// Copyright (c) 2022 Gobalsky Labs Limited
//
// Use of this software is governed by the Business Source License included
// in the LICENSE.VEGA file and at https://www.mariadb.com/bsl11.
//
// Change Date: 18 months from the later of the date of the first publicly
// available Distribution of this version of the repository, and 25 June 2022.
//
// On the date above, in accordance with the Business Source License, use
// of this software will be governed by version 3 or later of the GNU General
// Public License.
package admin
import (
"bytes"
"context"
"fmt"
"net"
"net/http"
"net/url"
"github.com/gorilla/rpc/json"
"code.vegaprotocol.io/vega/core/types"
"code.vegaprotocol.io/vega/logging"
)
// Client implement a socket client allowing to run simple RPC commands.
type Client struct {
log *logging.Logger
cfg Config
http *http.Client
}
// NewClient returns a new instance of the RPC socket client.
func NewClient(
log *logging.Logger,
config Config,
) *Client {
// setup logger
log = log.Named(clientNamedLogger)
log.SetLevel(config.Level.Get())
return &Client{
log: log,
cfg: config,
http: &http.Client{
Transport: &http.Transport{
DialContext: func(_ context.Context, _, _ string) (net.Conn, error) {
return net.Dial("unix", config.Server.SocketPath)
},
},
},
}
}
func (s *Client) call(ctx context.Context, method string, args interface{}, reply interface{}) error {
req, err := json.EncodeClientRequest(method, args)
if err != nil {
return fmt.Errorf("failed to encode client JSON request: %w", err)
}
u := url.URL{
Scheme: "http",
Host: "unix",
Path: s.cfg.Server.HTTPPath,
}
httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, u.String(), bytes.NewReader(req))
if err != nil {
return fmt.Errorf("failed to create HTTP request: %w", err)
}
httpReq.Header.Set("Content-Type", "application/json")
resp, err := s.http.Do(httpReq)
if err != nil {
return fmt.Errorf("failed to post data %q: %w", string(req), err)
}
defer resp.Body.Close()
if err := json.DecodeClientResponse(resp.Body, reply); err != nil {
return fmt.Errorf("failed to decode client JSON response: %w", err)
}
return nil
}
func (s *Client) NodeWalletReload(ctx context.Context, chain string) (*NodeWalletReloadReply, error) {
var reply NodeWalletReloadReply
if err := s.call(ctx, "NodeWallet.Reload", NodeWalletArgs{Chain: chain}, &reply); err != nil {
return nil, fmt.Errorf("failed to call NodeWallet.Reload method: %w", err)
}
return &reply, nil
}
func (s *Client) NodeWalletShow(ctx context.Context, chain string) (*Wallet, error) {
var reply Wallet
if err := s.call(ctx, "NodeWallet.Show", NodeWalletArgs{Chain: chain}, &reply); err != nil {
return nil, fmt.Errorf("failed to call NodeWallet.Show method: %w", err)
}
return &reply, nil
}
func (s *Client) UpgradeStatus(ctx context.Context) (*types.UpgradeStatus, error) {
var reply types.UpgradeStatus
if err := s.call(ctx, "protocolupgrade.UpgradeStatus", nil, &reply); err != nil {
return nil, fmt.Errorf("failed to call protocolupgrade.UpgradeStatus method: %w", err)
}
return &reply, nil
}