/
cmd_ping.go
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/
cmd_ping.go
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// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
package client
import (
"fmt"
"net"
"strings"
"time"
"github.com/keybase/cli"
"github.com/keybase/client/go/libcmdline"
"github.com/keybase/client/go/libkb"
"github.com/keybase/client/go/logger"
gregor1 "github.com/keybase/client/go/protocol/gregor1"
keybase1 "github.com/keybase/client/go/protocol/keybase1"
"github.com/keybase/go-framed-msgpack-rpc/rpc"
"golang.org/x/net/context"
)
type CmdPing struct {
libkb.Contextified
gregor bool
}
func (v *CmdPing) Run() error {
if v.gregor {
return PingGregor(v.G())
}
_, err := v.G().API.Post(libkb.APIArg{Endpoint: "ping"})
if err != nil {
return err
}
_, err = v.G().API.Get(libkb.APIArg{Endpoint: "ping"})
if err != nil {
return err
}
v.G().Log.Info(fmt.Sprintf("API Server at %s is up", v.G().Env.GetServerURI()))
return nil
}
func NewCmdPing(cl *libcmdline.CommandLine, g *libkb.GlobalContext) cli.Command {
return cli.Command{
Name: "ping",
Usage: "Ping the keybase API server",
Flags: []cli.Flag{
cli.BoolFlag{
Name: "gregor",
Usage: "ping the Gregor server",
},
},
Action: func(c *cli.Context) {
cl.ChooseCommand(&CmdPing{Contextified: libkb.NewContextified(g)}, "ping", c)
},
}
}
func (v *CmdPing) ParseArgv(ctx *cli.Context) error {
v.gregor = ctx.Bool("gregor")
return nil
}
func (v *CmdPing) GetUsage() libkb.Usage {
return libkb.Usage{
Config: true,
API: true,
}
}
// pingGregorTransport implements rpc.ConnectionTransport
type pingGregorTransport struct {
libkb.Contextified
host string
conn net.Conn
transport rpc.Transporter
stagedTransport rpc.Transporter
}
var _ rpc.ConnectionTransport = (*pingGregorTransport)(nil)
func newConnTransport(host string) *pingGregorTransport {
return &pingGregorTransport{
host: host,
}
}
func (t *pingGregorTransport) Dial(context.Context) (rpc.Transporter, error) {
t.G().Log.Debug("pingGregorTransport Dial", t.host)
var err error
t.conn, err = net.Dial("tcp", t.host)
if err != nil {
return nil, err
}
t.stagedTransport = rpc.NewTransport(t.conn, nil, nil, rpc.DefaultMaxFrameLength)
return t.stagedTransport, nil
}
func (t *pingGregorTransport) IsConnected() bool {
t.G().Log.Debug("pingGregorTransport IsConnected")
return t.transport != nil && t.transport.IsConnected()
}
func (t *pingGregorTransport) Finalize() {
t.G().Log.Debug("pingGregorTransport Finalize")
t.transport = t.stagedTransport
t.stagedTransport = nil
}
func (t *pingGregorTransport) Close() {
t.G().Log.Debug("pingGregorTransport Close")
t.conn.Close()
}
// pingGregorHandler implements rpc.ConnectionHandler
type pingGregorHandler struct {
libkb.Contextified
pingErrors chan error
pingSuccess chan struct{}
}
var _ rpc.ConnectionHandler = (*pingGregorHandler)(nil)
func newGregorHandler() *pingGregorHandler {
return &pingGregorHandler{}
}
func (g *pingGregorHandler) HandlerName() string {
return "ping gregor"
}
func (g *pingGregorHandler) OnConnect(ctx context.Context, conn *rpc.Connection, cli rpc.GenericClient, srv *rpc.Server) error {
g.G().Log.Debug("pingGregorHandler OnConnect")
ac := gregor1.IncomingClient{Cli: cli}
response, err := ac.Ping(ctx)
if err != nil {
g.pingErrors <- err
} else if response != "pong" {
g.pingErrors <- fmt.Errorf("Got an unexpected response from ping: %#v", response)
} else {
g.pingSuccess <- struct{}{}
}
return err
}
func (g *pingGregorHandler) OnConnectError(err error, reconnectThrottleDuration time.Duration) {
g.G().Log.Debug("pingGregorHandler OnConnectError", err)
g.pingErrors <- err
}
func (g *pingGregorHandler) OnDisconnected(ctx context.Context, status rpc.DisconnectStatus) {
g.G().Log.Debug("pingGregorHandler OnDisconnected", status)
}
func (g *pingGregorHandler) OnDoCommandError(err error, nextTime time.Duration) {
g.G().Log.Debug("pingGregorHandler DoCommandError", err)
g.pingErrors <- err
}
func (g *pingGregorHandler) ShouldRetry(name string, err error) bool {
g.G().Log.Debug("pingGregorHandler ShouldRetry", name, err)
g.pingErrors <- err
return false
}
func (g *pingGregorHandler) ShouldRetryOnConnect(err error) bool {
g.G().Log.Debug("pingGregorHandler ShouldRetryOnConnect", err)
g.pingErrors <- err
return false
}
func (g *pingGregorHandler) BroadcastMessage(ctx context.Context, m gregor1.Message) error {
g.G().Log.Debug("pingGregorHandler BroadcaseMessage", m)
return nil
}
func PingGregor(g *libkb.GlobalContext) error {
var pingError error
g.Log.Debug("+ libkb.PingGregor")
defer g.Log.Debug("- libkb.PingGregor %#v", pingError)
transport := &pingGregorTransport{
Contextified: libkb.NewContextified(g),
host: strings.TrimPrefix(g.Env.GetGregorURI(), "fmprpc://"),
}
rpcHandler := &pingGregorHandler{
Contextified: libkb.NewContextified(g),
pingErrors: make(chan error),
pingSuccess: make(chan struct{}),
}
opts := rpc.ConnectionOpts{
WrapErrorFunc: keybase1.WrapError,
}
connection := rpc.NewConnectionWithTransport(rpcHandler, transport,
keybase1.ErrorUnwrapper{},
logger.LogOutputWithDepthAdder{Logger: g.Log}, opts)
select {
case err := <-rpcHandler.pingErrors:
pingError = fmt.Errorf("Gregor ping FAILED: %s", err.Error())
case <-rpcHandler.pingSuccess:
}
connection.Shutdown()
return pingError
}