// NewClient creates a new Hyperbahn client using the given channel.
// config is the environment-specific configuration for Hyperbahn such as the list of initial nodes.
// opts are optional, and are used to customize the client.
func NewClient(ch *tchannel.Channel, config Configuration, opts *ClientOptions) (*Client, error) {
client := &Client{tchan: ch, quit: make(chan struct{})}
if opts != nil {
client.opts = *opts
}
if client.opts.Timeout == 0 {
client.opts.Timeout = 3 * time.Second
}
if client.opts.TimeoutPerAttempt == 0 {
client.opts.TimeoutPerAttempt = time.Second
}
if client.opts.Handler == nil {
client.opts.Handler = nullHandler{}
}
if client.opts.TimeSleep == nil {
client.opts.TimeSleep = time.Sleep
}
if err := parseConfig(&config); err != nil {
return nil, err
}
// Add the given initial nodes as peers.
for _, node := range config.InitialNodes {
addPeer(ch, node)
}
client.jsonClient = tjson.NewClient(ch, hyperbahnServiceName, nil)
thriftClient := tthrift.NewClient(ch, hyperbahnServiceName, nil)
client.hyperbahnClient = htypes.NewTChanHyperbahnClient(thriftClient)
return client, nil
}
func BenchmarkBothSerial(b *testing.B) {
serverAddr, err := setupBenchServer()
require.NoError(b, err, "setupBenchServer failed")
opts := testutils.NewOpts().SetFramePool(tchannel.NewSyncFramePool())
clientCh := testutils.NewClient(b, opts)
for _, addr := range serverAddr {
clientCh.Peers().Add(addr)
}
thriftClient := thrift.NewClient(clientCh, "bench-server", nil)
client := gen.NewTChanSecondServiceClient(thriftClient)
ctx, cancel := thrift.NewContext(10 * time.Millisecond)
client.Echo(ctx, "make connection")
cancel()
b.ResetTimer()
for i := 0; i < b.N; i++ {
ctx, cancel := thrift.NewContext(10 * time.Millisecond)
defer cancel()
_, err := client.Echo(ctx, "hello world")
if err != nil {
b.Errorf("Echo failed: %v", err)
}
}
}
func TestThriftTracingPropagation(t *testing.T) {
suite := &PropagationTestSuite{
Encoding: EncodingInfo{Format: tchannel.Thrift, HeadersSupported: true},
Register: func(t *testing.T, ch *tchannel.Channel) TracingCall {
opts := &thrift.ClientOptions{HostPort: ch.PeerInfo().HostPort}
thriftClient := thrift.NewClient(ch, ch.PeerInfo().ServiceName, opts)
handler := &ThriftHandler{
TraceHandler: TraceHandler{Ch: ch},
t: t,
thriftClient: gen.NewTChanSimpleServiceClient(thriftClient),
}
// Register Thrift handler
server := thrift.NewServer(ch)
server.Register(gen.NewTChanSimpleServiceServer(handler))
return handler.firstCall
},
TestCases: map[TracerType][]PropagationTestCase{
Noop: {
{ForwardCount: 2, TracingDisabled: true, ExpectedBaggage: "", ExpectedSpanCount: 0},
{ForwardCount: 2, TracingDisabled: false, ExpectedBaggage: "", ExpectedSpanCount: 0},
},
Mock: {
{ForwardCount: 2, TracingDisabled: true, ExpectedBaggage: BaggageValue, ExpectedSpanCount: 0},
{ForwardCount: 2, TracingDisabled: false, ExpectedBaggage: BaggageValue, ExpectedSpanCount: 6},
},
Jaeger: {
{ForwardCount: 2, TracingDisabled: true, ExpectedBaggage: BaggageValue, ExpectedSpanCount: 0},
{ForwardCount: 2, TracingDisabled: false, ExpectedBaggage: BaggageValue, ExpectedSpanCount: 6},
},
},
}
suite.Run(t)
}
func main() {
// Create a TChannel.
ch, err := tchannel.NewChannel("keyvalue-client", nil)
if err != nil {
log.Fatalf("Failed to create tchannel: %v", err)
}
// Set up Hyperbahn client.
config := hyperbahn.Configuration{InitialNodes: os.Args[1:]}
if len(config.InitialNodes) == 0 {
log.Fatalf("No Autobahn nodes to connect to given")
}
hyperbahn.NewClient(ch, config, nil)
thriftClient := thrift.NewClient(ch, "keyvalue", nil)
client := keyvalue.NewTChanKeyValueClient(thriftClient)
adminClient := keyvalue.NewTChanAdminClient(thriftClient)
// Read commands from the command line and execute them.
scanner := bufio.NewScanner(os.Stdin)
printHelp()
fmt.Printf("> ")
for scanner.Scan() {
parts := strings.Split(scanner.Text(), " ")
if parts[0] == "" {
continue
}
switch parts[0] {
case "help":
printHelp()
case "get":
if len(parts) < 2 {
printHelp()
break
}
get(client, parts[1])
case "set":
if len(parts) < 3 {
printHelp()
break
}
set(client, parts[1], parts[2])
case "user":
if len(parts) < 2 {
printHelp()
break
}
curUser = parts[1]
case "clearAll":
clear(adminClient)
default:
log.Printf("Unsupported command %q\n", parts[0])
}
fmt.Print("> ")
}
scanner.Text()
}
// NewZipkinTraceReporter returns a zipkin trace reporter that submits span to tcollector service.
func NewZipkinTraceReporter(ch *tc.Channel) *ZipkinTraceReporter {
thriftClient := thrift.NewClient(ch, tcollectorServiceName, nil)
client := tcollector.NewTChanTCollectorClient(thriftClient)
// create the goroutine method to actually to the submit Span.
reporter := &ZipkinTraceReporter{
tchannel: ch,
client: client,
c: make(chan zipkinData, chanBufferSize),
logger: ch.Logger(),
}
go reporter.zipkinSpanWorker()
return reporter
}
// Get the client for a certain destination from our internal cache, or
// delegates the creation to the ClientFactory.
func (r *router) GetClient(key string) (interface{}, error) {
dest, err := r.ringpop.Lookup(key)
if err != nil {
return nil, err
}
r.rw.RLock()
client, ok := r.clientCache[dest]
r.rw.RUnlock()
if ok {
return client, nil
}
// no match so far, get a complete lock for creation
r.rw.Lock()
defer r.rw.Unlock()
// double check it is not created between read and complete lock
client, ok = r.clientCache[dest]
if ok {
return client, nil
}
me, err := r.ringpop.WhoAmI()
if err != nil {
return nil, err
}
// use the ClientFactory to get the client
if dest == me {
client = r.factory.GetLocalClient()
} else {
thriftClient := thrift.NewClient(
r.channel,
r.channel.ServiceName(),
&thrift.ClientOptions{
HostPort: dest,
},
)
client = r.factory.MakeRemoteClient(thriftClient)
}
// cache the client
r.clientCache[dest] = client
return client, nil
}
func runClient2(hyperbahnService string, addr net.Addr) error {
tchan, err := tchannel.NewChannel("client2", optsFor("client2"))
if err != nil {
return err
}
tchan.Peers().Add(addr.String())
tclient := thrift.NewClient(tchan, hyperbahnService, nil)
client := gen.NewTChanSecondClient(tclient)
go func() {
for {
ctx, cancel := thrift.NewContext(time.Second)
client.Test(ctx)
cancel()
time.Sleep(100 * time.Millisecond)
}
}()
return nil
}
func runThrift(t crossdock.T, call call) {
assert := crossdock.Assert(t)
checks := crossdock.Checks(t)
headers := map[string]string{
"hello": "thrift",
}
token := random.String(5)
client := thrift.NewClient(call.Channel, serverName, &thrift.ClientOptions{HostPort: call.ServerHostPort})
resp, respHeaders, err := thriftCall(client, headers, token)
if checks.NoError(err, "thrift: call failed") {
assert.Equal(token, resp.Boop, "body echoed")
respHeaders = internal.RemoveVariableMapKeys(respHeaders)
assert.Equal(headers, respHeaders, "headers echoed")
}
runGauntlet(t, client)
}
// NewTCollectorReporter return trace reporter that submits span to TCollector.
func NewTCollectorReporter(ch *tc.Channel) *TCollectorReporter {
thriftClient := thrift.NewClient(ch, tcollectorServiceName, nil)
client := tcollector.NewTChanTCollectorClient(thriftClient)
curHostIP, err := tc.ListenIP()
if err != nil {
ch.Logger().WithFields(tc.ErrField(err)).Warn("TCollector TraceReporter failed to get IP.")
curHostIP = net.IPv4(0, 0, 0, 0)
}
// create the goroutine method to actually to the submit Span.
reporter := &TCollectorReporter{
tchannel: ch,
client: client,
c: make(chan tc.TraceData, chanBufferSize),
logger: ch.Logger(),
curHostIP: inetAton(curHostIP.String()),
}
go reporter.worker()
return reporter
}
func (h *thriftHandler) callDownstream(ctx context.Context, target *Downstream) (*Response, error) {
req := &Request{
ServerRole: target.ServerRole,
Downstream: target.Downstream,
}
opts := &thrift.ClientOptions{HostPort: target.HostPort}
thriftClient := thrift.NewClient(h.ch, target.ServiceName, opts)
serviceClient := gen.NewTChanSimpleServiceClient(thriftClient)
tReq, err := requestToThrift(req)
if err != nil {
return nil, err
}
log.Printf("Calling Thrift service %s (%s)", target.ServiceName, target.HostPort)
tctx := thrift.Wrap(ctx)
res, err := serviceClient.Call(tctx, tReq)
if err != nil {
return nil, err
}
return responseFromThrift(res)
}
func runClient1(hyperbahnService string, addr net.Addr) error {
tchan, err := tchannel.NewChannel("client1", optsFor("client1"))
if err != nil {
return err
}
tchan.Peers().Add(addr.String())
tclient := thrift.NewClient(tchan, hyperbahnService, nil)
client := gen.NewTChanFirstClient(tclient)
go func() {
for {
ctx, cancel := thrift.NewContext(time.Second)
res, err := client.Echo(ctx, "Hi")
log.Println("Echo(Hi) = ", res, ", err: ", err)
log.Println("AppError() = ", client.AppError(ctx))
log.Println("BaseCall() = ", client.BaseCall(ctx))
cancel()
time.Sleep(100 * time.Millisecond)
}
}()
return nil
}
func main() {
ch, err := tchannel.NewChannel("tcheck", nil)
if err != nil {
fmt.Println("failed to create tchannel:", err)
os.Exit(1)
}
hostsFile := flag.String("hostsFile", "/etc/uber/hyperbahn/hosts.json", "hyperbahn hosts file")
serviceName := flag.String("serviceName", "hyperbahn", "service name to check health of")
peer := flag.String("peer", "", "peer to hit directly")
flag.Parse()
var config hyperbahn.Configuration
if *peer != "" {
config = hyperbahn.Configuration{InitialNodes: []string{*peer}}
} else {
config = hyperbahn.Configuration{InitialNodesFile: *hostsFile}
}
hyperbahn.NewClient(ch, config, nil)
thriftClient := thrift.NewClient(ch, *serviceName, nil)
client := meta.NewTChanMetaClient(thriftClient)
ctx, cancel := thrift.NewContext(time.Second)
defer cancel()
val, err := client.Health(ctx)
if err != nil {
fmt.Printf("NOT OK %v\nError: %v\n", *serviceName, err)
os.Exit(2)
} else if val.Ok != true {
fmt.Printf("NOT OK %v\n", *val.Message)
os.Exit(3)
} else {
fmt.Printf("OK\n")
}
}
func newInternalClient(hosts []string, opts *options) inProcClient {
ch, err := tchannel.NewChannel(opts.svcName, &tchannel.ChannelOptions{
Logger: tchannel.NewLevelLogger(tchannel.NewLogger(os.Stderr), tchannel.LogLevelWarn),
})
if err != nil {
panic("failed to create channel: " + err.Error())
}
for _, host := range hosts {
ch.Peers().Add(host)
}
thriftClient := thrift.NewClient(ch, opts.svcName, nil)
client := gen.NewTChanSecondServiceClient(thriftClient)
return &internalClient{
ch: ch,
sc: ch.GetSubChannel(opts.svcName),
tClient: client,
argBytes: getRequestBytes(opts.reqSize),
argStr: getRequestString(opts.reqSize),
opts: opts,
}
}
func main() {
flag.Parse()
ch, err := testutils.NewClient(nil)
if err != nil {
log.Fatalf("err")
}
for _, host := range flag.Args() {
ch.Peers().Add(host)
}
thriftClient := thrift.NewClient(ch, *serviceName, nil)
client := gen.NewTChanSecondServiceClient(thriftClient)
fmt.Println("bench-client started")
rdr := bufio.NewReader(os.Stdin)
for {
line, err := rdr.ReadString('\n')
if err != nil {
if err == io.EOF {
return
}
log.Fatalf("stdin read failed: %v", err)
}
line = strings.TrimSuffix(line, "\n")
switch line {
case "call":
makeCall(client)
case "quit":
return
default:
log.Fatalf("unrecognized command: %v", line)
}
}
}
