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add support for streaming requests. cleanup watcher initilisation

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This commit is contained in:
Asim 2015-06-01 18:55:27 +01:00
parent fa2c27b64f
commit 09c784d294
25 changed files with 729 additions and 384 deletions
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24
client/client.go
View File

@ -1,6 +1,7 @@
package client
import (
"github.com/myodc/go-micro/registry"
"github.com/myodc/go-micro/transport"
"golang.org/x/net/context"
)
@ -11,9 +12,18 @@ type Client interface {
NewJsonRequest(string, string, interface{}) Request
Call(context.Context, Request, interface{}) error
CallRemote(context.Context, string, Request, interface{}) error
Stream(context.Context, Request, interface{}) (Streamer, error)
StreamRemote(context.Context, string, Request, interface{}) (Streamer, error)
}
type Streamer interface {
Request() Request
Error() error
Close() error
}
type options struct {
registry registry.Registry
transport transport.Transport
}
@ -23,6 +33,12 @@ var (
DefaultClient Client = newRpcClient()
)
func Registry(r registry.Registry) Option {
return func(o *options) {
o.registry = r
}
}
func Transport(t transport.Transport) Option {
return func(o *options) {
o.transport = t
@ -37,6 +53,14 @@ func CallRemote(ctx context.Context, address string, request Request, response i
return DefaultClient.CallRemote(ctx, address, request, response)
}
func Stream(ctx context.Context, request Request, responseChan interface{}) (Streamer, error) {
return DefaultClient.Stream(ctx, request, responseChan)
}
func StreamRemote(ctx context.Context, address string, request Request, responseChan interface{}) (Streamer, error) {
return DefaultClient.StreamRemote(ctx, address, request, responseChan)
}
func NewClient(opt ...Option) Client {
return newRpcClient(opt...)
}

126
client/rpc_client.go
View File

@ -1,7 +1,6 @@
package client
import (
"bytes"
"fmt"
"math/rand"
"net/http"
@ -13,11 +12,8 @@ import (
"github.com/myodc/go-micro/transport"
rpc "github.com/youtube/vitess/go/rpcplus"
js "github.com/youtube/vitess/go/rpcplus/jsonrpc"
pb "github.com/youtube/vitess/go/rpcplus/pbrpc"
"golang.org/x/net/context"
"google.golang.org/grpc"
)
type headerRoundTripper struct {
@ -54,46 +50,8 @@ func (t *headerRoundTripper) RoundTrip(r *http.Request) (*http.Response, error)
}
func (r *rpcClient) call(ctx context.Context, address string, request Request, response interface{}) error {
switch request.ContentType() {
case "application/grpc":
cc, err := grpc.Dial(address)
if err != nil {
return errors.InternalServerError("go.micro.client", fmt.Sprintf("Error connecting to server: %v", err))
}
if err := grpc.Invoke(ctx, request.Method(), request.Request(), response, cc); err != nil {
return errors.InternalServerError("go.micro.client", fmt.Sprintf("Error sending request: %v", err))
}
return nil
}
pReq := &rpc.Request{
ServiceMethod: request.Method(),
}
reqB := bytes.NewBuffer(nil)
defer reqB.Reset()
buf := &buffer{
reqB,
}
var cc rpc.ClientCodec
switch request.ContentType() {
case "application/octet-stream":
cc = pb.NewClientCodec(buf)
case "application/json":
cc = js.NewClientCodec(buf)
default:
return errors.InternalServerError("go.micro.client", fmt.Sprintf("Unsupported request type: %s", request.ContentType()))
}
err := cc.WriteRequest(pReq, request.Request())
if err != nil {
return errors.InternalServerError("go.micro.client", fmt.Sprintf("Error writing request: %v", err))
}
msg := &transport.Message{
Header: make(map[string]string),
Body: reqB.Bytes(),
}
md, ok := c.GetMetadata(ctx)
@ -110,42 +68,37 @@ func (r *rpcClient) call(ctx context.Context, address string, request Request, r
return errors.InternalServerError("go.micro.client", fmt.Sprintf("Error sending request: %v", err))
}
rsp, err := c.Send(msg)
client := rpc.NewClientWithCodec(newRpcPlusCodec(msg, c))
return client.Call(ctx, request.Method(), request.Request(), response)
}
func (r *rpcClient) stream(ctx context.Context, address string, request Request, responseChan interface{}) (Streamer, error) {
msg := &transport.Message{
Header: make(map[string]string),
}
md, ok := c.GetMetadata(ctx)
if ok {
for k, v := range md {
msg.Header[k] = v
}
}
msg.Header["Content-Type"] = request.ContentType()
c, err := r.opts.transport.Dial(address, transport.WithStream())
if err != nil {
return errors.InternalServerError("go.micro.client", fmt.Sprintf("Error sending request: %v", err))
return nil, errors.InternalServerError("go.micro.client", fmt.Sprintf("Error sending request: %v", err))
}
rspB := bytes.NewBuffer(rsp.Body)
defer rspB.Reset()
rBuf := &buffer{
rspB,
}
client := rpc.NewClientWithCodec(newRpcPlusCodec(msg, c))
call := client.StreamGo(request.Method(), request.Request(), responseChan)
switch rsp.Header["Content-Type"] {
case "application/octet-stream":
cc = pb.NewClientCodec(rBuf)
case "application/json":
cc = js.NewClientCodec(rBuf)
default:
return errors.InternalServerError("go.micro.client", string(rsp.Body))
}
pRsp := &rpc.Response{}
err = cc.ReadResponseHeader(pRsp)
if err != nil {
return errors.InternalServerError("go.micro.client", fmt.Sprintf("Error reading response headers: %v", err))
}
if len(pRsp.Error) > 0 {
return errors.Parse(pRsp.Error)
}
err = cc.ReadResponseBody(response)
if err != nil {
return errors.InternalServerError("go.micro.client", fmt.Sprintf("Error reading response body: %v", err))
}
return nil
return &rpcStream{
request: request,
call: call,
client: client,
}, nil
}
func (r *rpcClient) CallRemote(ctx context.Context, address string, request Request, response interface{}) error {
@ -174,6 +127,31 @@ func (r *rpcClient) Call(ctx context.Context, request Request, response interfac
return r.call(ctx, address, request, response)
}
func (r *rpcClient) StreamRemote(ctx context.Context, address string, request Request, responseChan interface{}) (Streamer, error) {
return r.stream(ctx, address, request, responseChan)
}
func (r *rpcClient) Stream(ctx context.Context, request Request, responseChan interface{}) (Streamer, error) {
service, err := registry.GetService(request.Service())
if err != nil {
return nil, errors.InternalServerError("go.micro.client", err.Error())
}
if len(service.Nodes) == 0 {
return nil, errors.NotFound("go.micro.client", "Service not found")
}
n := rand.Int() % len(service.Nodes)
node := service.Nodes[n]
address := node.Address
if node.Port > 0 {
address = fmt.Sprintf("%s:%d", address, node.Port)
}
return r.stream(ctx, address, request, responseChan)
}
func (r *rpcClient) NewRequest(service, method string, request interface{}) Request {
return r.NewProtoRequest(service, method, request)
}

85
client/rpc_codec.go Normal file
View File

@ -0,0 +1,85 @@
package client
import (
"bytes"
"fmt"
"github.com/myodc/go-micro/transport"
rpc "github.com/youtube/vitess/go/rpcplus"
js "github.com/youtube/vitess/go/rpcplus/jsonrpc"
pb "github.com/youtube/vitess/go/rpcplus/pbrpc"
)
type rpcPlusCodec struct {
client transport.Client
codec rpc.ClientCodec
req *transport.Message
wbuf *bytes.Buffer
rbuf *bytes.Buffer
}
func newRpcPlusCodec(req *transport.Message, client transport.Client) *rpcPlusCodec {
return &rpcPlusCodec{
req: req,
client: client,
wbuf: bytes.NewBuffer(nil),
rbuf: bytes.NewBuffer(nil),
}
}
func (c *rpcPlusCodec) WriteRequest(req *rpc.Request, body interface{}) error {
c.wbuf.Reset()
buf := &buffer{c.wbuf}
var cc rpc.ClientCodec
switch c.req.Header["Content-Type"] {
case "application/octet-stream":
cc = pb.NewClientCodec(buf)
case "application/json":
cc = js.NewClientCodec(buf)
default:
return fmt.Errorf("unsupported request type: %s", c.req.Header["Content-Type"])
}
if err := cc.WriteRequest(req, body); err != nil {
return err
}
c.req.Body = c.wbuf.Bytes()
return c.client.Send(c.req)
}
func (c *rpcPlusCodec) ReadResponseHeader(r *rpc.Response) error {
var m transport.Message
if err := c.client.Recv(&m); err != nil {
return err
}
c.rbuf.Reset()
c.rbuf.Write(m.Body)
buf := &buffer{c.rbuf}
switch m.Header["Content-Type"] {
case "application/octet-stream":
c.codec = pb.NewClientCodec(buf)
case "application/json":
c.codec = js.NewClientCodec(buf)
default:
return fmt.Errorf("%s", string(m.Body))
}
return c.codec.ReadResponseHeader(r)
}
func (c *rpcPlusCodec) ReadResponseBody(r interface{}) error {
return c.codec.ReadResponseBody(r)
}
func (c *rpcPlusCodec) Close() error {
c.rbuf.Reset()
c.wbuf.Reset()
return c.client.Close()
}

23
client/rpc_stream.go Normal file
View File

@ -0,0 +1,23 @@
package client
import (
rpc "github.com/youtube/vitess/go/rpcplus"
)
type rpcStream struct {
request Request
call *rpc.Call
client *rpc.Client
}
func (r *rpcStream) Request() Request {
return r.request
}
func (r *rpcStream) Error() error {
return r.call.Error
}
func (r *rpcStream) Close() error {
return r.client.Close()
}

51
cmd/cmd.go
View File

@ -88,40 +88,37 @@ var (
Usage: "Comma-separated list of transport addresses",
},
}
Brokers = map[string]func([]string, ...broker.Option) broker.Broker{
"http": http.NewBroker,
"nats": nats.NewBroker,
"rabbitmq": rabbitmq.NewBroker,
}
Registries = map[string]func([]string, ...registry.Option) registry.Registry{
"kubernetes": kubernetes.NewRegistry,
"consul": consul.NewRegistry,
"etcd": etcd.NewRegistry,
}
Transports = map[string]func([]string, ...transport.Option) transport.Transport{
"http": thttp.NewTransport,
"rabbitmq": trmq.NewTransport,
"nats": tnats.NewTransport,
}
)
func Setup(c *cli.Context) error {
bAddrs := strings.Split(c.String("broker_address"), ",")
switch c.String("broker") {
case "http":
broker.DefaultBroker = http.NewBroker(bAddrs)
case "nats":
broker.DefaultBroker = nats.NewBroker(bAddrs)
case "rabbitmq":
broker.DefaultBroker = rabbitmq.NewBroker(bAddrs)
if b, ok := Brokers[c.String("broker")]; ok {
broker.DefaultBroker = b(strings.Split(c.String("broker_address"), ","))
}
rAddrs := strings.Split(c.String("registry_address"), ",")
switch c.String("registry") {
case "kubernetes":
registry.DefaultRegistry = kubernetes.NewRegistry(rAddrs)
case "consul":
registry.DefaultRegistry = consul.NewRegistry(rAddrs)
case "etcd":
registry.DefaultRegistry = etcd.NewRegistry(rAddrs)
if r, ok := Registries[c.String("registry")]; ok {
registry.DefaultRegistry = r(strings.Split(c.String("registry_address"), ","))
}
tAddrs := strings.Split(c.String("transport_address"), ",")
switch c.String("transport") {
case "http":
transport.DefaultTransport = thttp.NewTransport(tAddrs)
case "rabbitmq":
transport.DefaultTransport = trmq.NewTransport(tAddrs)
case "nats":
transport.DefaultTransport = tnats.NewTransport(tAddrs)
if t, ok := Transports[c.String("transport")]; ok {
transport.DefaultTransport = t(strings.Split(c.String("transport_address"), ","))
}
metadata := make(map[string]string)

44
examples/client/main.go
View File

@ -10,9 +10,7 @@ import (
"golang.org/x/net/context"
)
func main() {
cmd.Init()
func call(i int) {
// Create new request to service go.micro.srv.example, method Example.Call
req := client.NewRequest("go.micro.srv.example", "Example.Call", &example.Request{
Name: "John",
@ -28,9 +26,45 @@ func main() {
// Call service
if err := client.Call(ctx, req, rsp); err != nil {
fmt.Println(err)
fmt.Println("err: ", err, rsp)
return
}
fmt.Println(rsp.Msg)
fmt.Println("Call:", i, "rsp:", rsp.Msg)
}
func stream() {
// Create new request to service go.micro.srv.example, method Example.Call
req := client.NewRequest("go.micro.srv.example", "Example.Stream", &example.StreamingRequest{
Count: int64(10),
})
rspChan := make(chan *example.StreamingResponse, 10)
stream, err := client.Stream(context.Background(), req, rspChan)
if err != nil {
fmt.Println("err:", err)
return
}
for rsp := range rspChan {
fmt.Println("Stream: rsp:", rsp.Count)
}
if stream.Error() != nil {
fmt.Println("err:", err)
return
}
stream.Close()
}
func main() {
cmd.Init()
for i := 0; i < 10; i++ {
call(i)
}
stream()
}

19
examples/server/handler/example.go
View File

@ -13,7 +13,24 @@ type Example struct{}
func (e *Example) Call(ctx context.Context, req *example.Request, rsp *example.Response) error {
md, _ := c.GetMetadata(ctx)
log.Info("Received Example.Call request with metadata: %v", md)
log.Infof("Received Example.Call request with metadata: %v", md)
rsp.Msg = server.Config().Id() + ": Hello " + req.Name
return nil
}
func (e *Example) Stream(ctx context.Context, req *example.StreamingRequest, response func(interface{}) error) error {
log.Infof("Received Example.Stream request with count: %d", req.Count)
for i := 0; i < int(req.Count); i++ {
log.Infof("Responding: %d", i)
r := &example.StreamingResponse{
Count: int64(i),
}
if err := response(r); err != nil {
return err
}
}
return nil
}

18
examples/server/proto/example/example.pb.go
View File

@ -11,6 +11,8 @@ It is generated from these files:
It has these top-level messages:
Request
Response
StreamingRequest
StreamingResponse
*/
package example
@ -35,5 +37,21 @@ func (m *Response) Reset() { *m = Response{} }
func (m *Response) String() string { return proto.CompactTextString(m) }
func (*Response) ProtoMessage() {}
type StreamingRequest struct {
Count int64 `protobuf:"varint,1,opt,name=count" json:"count,omitempty"`
}
func (m *StreamingRequest) Reset() { *m = StreamingRequest{} }
func (m *StreamingRequest) String() string { return proto.CompactTextString(m) }
func (*StreamingRequest) ProtoMessage() {}
type StreamingResponse struct {
Count int64 `protobuf:"varint,1,opt,name=count" json:"count,omitempty"`
}
func (m *StreamingResponse) Reset() { *m = StreamingResponse{} }
func (m *StreamingResponse) String() string { return proto.CompactTextString(m) }
func (*StreamingResponse) ProtoMessage() {}
func init() {
}

8
examples/server/proto/example/example.proto
View File

@ -7,3 +7,11 @@ message Request {
message Response {
string msg = 1;
}
message StreamingRequest {
int64 count = 1;
}
message StreamingResponse {
int64 count = 1;
}

5
registry/consul_registry.go
View File

@ -54,7 +54,6 @@ func newConsulRegistry(addrs []string, opts ...Option) Registry {
services: make(map[string]*Service),
}
cr.Watch()
return cr
}
@ -156,6 +155,6 @@ func (c *consulRegistry) ListServices() ([]*Service, error) {
return services, nil
}
func (c *consulRegistry) Watch() {
newConsulWatcher(c)
func (c *consulRegistry) Watch() (Watcher, error) {
return newConsulWatcher(c)
}

14
registry/consul_watcher.go
View File

@ -15,20 +15,22 @@ type serviceWatcher struct {
name string
}
func newConsulWatcher(cr *consulRegistry) *consulWatcher {
func newConsulWatcher(cr *consulRegistry) (Watcher, error) {
cw := &consulWatcher{
Registry: cr,
watchers: make(map[string]*watch.WatchPlan),
}
wp, err := watch.Parse(map[string]interface{}{"type": "services"})
if err == nil {
wp.Handler = cw.Handle
go wp.Run(cr.Address)
cw.wp = wp
if err != nil {
return nil, err
}
return cw
wp.Handler = cw.Handle
go wp.Run(cr.Address)
cw.wp = wp
return cw, nil
}
func (cw *consulWatcher) serviceHandler(idx uint64, data interface{}) {

8
registry/etcd/etcd.go
View File

@ -147,8 +147,9 @@ func (e *etcdRegistry) ListServices() ([]*registry.Service, error) {
return services, nil
}
func (e *etcdRegistry) Watch() {
newEtcdWatcher(e)
func (e *etcdRegistry) Watch() (registry.Watcher, error) {
// todo: fix watcher
return newEtcdWatcher(e)
}
func NewRegistry(addrs []string, opt ...registry.Option) registry.Registry {
@ -170,8 +171,5 @@ func NewRegistry(addrs []string, opt ...registry.Option) registry.Registry {
services: make(map[string]*registry.Service),
}
// Need to fix watcher
// e.Watch()
return e
}

90
registry/etcd/watcher.go
View File

@ -10,7 +10,7 @@ type etcdWatcher struct {
stop chan bool
}
func newEtcdWatcher(r *etcdRegistry) *etcdWatcher {
func newEtcdWatcher(r *etcdRegistry) (registry.Watcher, error) {
ew := &etcdWatcher{
registry: r,
stop: make(chan bool),
@ -19,53 +19,55 @@ func newEtcdWatcher(r *etcdRegistry) *etcdWatcher {
ch := make(chan *etcd.Response)
go r.client.Watch(prefix, 0, true, ch, ew.stop)
go ew.watch(ch)
go func() {
for rsp := range ch {
if rsp.Node.Dir {
continue
}
return ew, nil
}
s := decode(rsp.Node.Value)
if s == nil {
continue
}
r.Lock()
service, ok := r.services[s.Name]
if !ok {
if rsp.Action == "create" {
r.services[s.Name] = s
}
r.Unlock()
continue
}
switch rsp.Action {
case "delete":
var nodes []*registry.Node
for _, node := range service.Nodes {
var seen bool
for _, n := range s.Nodes {
if node.Id == n.Id {
seen = true
break
}
}
if !seen {
nodes = append(nodes, node)
}
}
service.Nodes = nodes
case "create":
service.Nodes = append(service.Nodes, s.Nodes...)
}
r.Unlock()
func (e *etcdWatcher) watch(ch chan *etcd.Response) {
for rsp := range ch {
if rsp.Node.Dir {
continue
}
}()
return ew
s := decode(rsp.Node.Value)
if s == nil {
continue
}
e.registry.Lock()
service, ok := e.registry.services[s.Name]
if !ok {
if rsp.Action == "create" {
e.registry.services[s.Name] = s
}
e.registry.Unlock()
continue
}
switch rsp.Action {
case "delete":
var nodes []*registry.Node
for _, node := range service.Nodes {
var seen bool
for _, n := range s.Nodes {
if node.Id == n.Id {
seen = true
break
}
}
if !seen {
nodes = append(nodes, node)
}
}
service.Nodes = nodes
case "create":
service.Nodes = append(service.Nodes, s.Nodes...)
}
e.registry.Unlock()
}
}
func (ew *etcdWatcher) Stop() {

10
registry/kubernetes/kubernetes.go
View File

@ -19,10 +19,6 @@ type kregistry struct {
services map[string]*registry.Service
}
func (c *kregistry) Watch() {
newWatcher(c)
}
func (c *kregistry) Deregister(s *registry.Service) error {
return nil
}
@ -97,6 +93,10 @@ func (c *kregistry) ListServices() ([]*registry.Service, error) {
return services, nil
}
func (c *kregistry) Watch() (registry.Watcher, error) {
return newWatcher(c)
}
func NewRegistry(addrs []string, opts ...registry.Option) registry.Registry {
host := "http://" + os.Getenv("KUBERNETES_RO_SERVICE_HOST") + ":" + os.Getenv("KUBERNETES_RO_SERVICE_PORT")
if len(addrs) > 0 {
@ -113,7 +113,5 @@ func NewRegistry(addrs []string, opts ...registry.Option) registry.Registry {
services: make(map[string]*registry.Service),
}
kr.Watch()
return kr
}

114
registry/kubernetes/watcher.go
View File

@ -1,73 +1,91 @@
package kubernetes
import (
"fmt"
"net"
"time"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
"github.com/GoogleCloudPlatform/kubernetes/pkg/proxy/config"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
"github.com/GoogleCloudPlatform/kubernetes/pkg/fields"
"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
"github.com/GoogleCloudPlatform/kubernetes/pkg/watch"
"github.com/myodc/go-micro/registry"
)
type watcher struct {
registry *kregistry
watcher watch.Interface
}
func (k *watcher) OnUpdate(services []api.Service) {
fmt.Println("got update")
activeServices := util.StringSet{}
for _, svc := range services {
fmt.Printf("%#v\n", svc.ObjectMeta)
name, exists := svc.ObjectMeta.Labels["name"]
if !exists {
continue
}
activeServices.Insert(name)
serviceIP := net.ParseIP(svc.Spec.ClusterIP)
ks := &registry.Service{
Name: name,
Nodes: []*registry.Node{
&registry.Node{
Address: serviceIP.String(),
Port: svc.Spec.Ports[0].Port,
},
},
}
k.registry.mtx.Lock()
k.registry.services[name] = ks
k.registry.mtx.Unlock()
func (k *watcher) update(event watch.Event) {
if event.Object == nil {
return
}
var service *api.Service
switch obj := event.Object.(type) {
case *api.Service:
service = obj
default:
return
}
name, exists := service.ObjectMeta.Labels["name"]
if !exists {
return
}
switch event.Type {
case watch.Added, watch.Modified:
case watch.Deleted:
k.registry.mtx.Lock()
delete(k.registry.services, name)
k.registry.mtx.Unlock()
return
default:
return
}
serviceIP := net.ParseIP(service.Spec.ClusterIP)
k.registry.mtx.Lock()
defer k.registry.mtx.Unlock()
for name, _ := range k.registry.services {
if !activeServices.Has(name) {
delete(k.registry.services, name)
}
k.registry.services[name] = &registry.Service{
Name: name,
Nodes: []*registry.Node{
&registry.Node{
Address: serviceIP.String(),
Port: service.Spec.Ports[0].Port,
},
},
}
k.registry.mtx.Unlock()
}
func newWatcher(kr *kregistry) *watcher {
serviceConfig := config.NewServiceConfig()
endpointsConfig := config.NewEndpointsConfig()
func (k *watcher) Stop() {
k.watcher.Stop()
}
config.NewSourceAPI(
kr.client.Services(api.NamespaceAll),
kr.client.Endpoints(api.NamespaceAll),
time.Second*10,
serviceConfig.Channel("api"),
endpointsConfig.Channel("api"),
)
func newWatcher(kr *kregistry) (registry.Watcher, error) {
svi := kr.client.Services(api.NamespaceAll)
ks := &watcher{
services, err := svi.List(labels.Everything())
if err != nil {
return nil, err
}
watch, err := svi.Watch(labels.Everything(), fields.Everything(), services.ResourceVersion)
if err != nil {
return nil, err
}
w := &watcher{
registry: kr,
watcher: watch,
}
serviceConfig.RegisterHandler(ks)
return ks
go func() {
for event := range watch.ResultChan() {
w.update(event)
}
}()
return w, nil
}

5
registry/registry.go
View File

@ -5,6 +5,11 @@ type Registry interface {
Deregister(*Service) error
GetService(string) (*Service, error)
ListServices() ([]*Service, error)
Watch() (Watcher, error)
}
type Watcher interface {
Stop()
}
type Service struct {

3
server/buffer.go
View File

@ -5,8 +5,7 @@ import (
)
type buffer struct {
io.Reader
io.Writer
io.ReadWriter
}
func (b *buffer) Close() error {

6
server/options.go
View File

@ -1,10 +1,12 @@
package server
import (
"github.com/myodc/go-micro/registry"
"github.com/myodc/go-micro/transport"
)
type options struct {
registry registry.Registry
transport transport.Transport
metadata map[string]string
name string
@ -19,6 +21,10 @@ func newOptions(opt ...Option) options {
o(&opts)
}
if opts.registry == nil {
opts.registry = registry.DefaultRegistry
}
if opts.transport == nil {
opts.transport = transport.DefaultTransport
}

82
server/rpc_codec.go Normal file
View File

@ -0,0 +1,82 @@
package server
import (
"bytes"
"fmt"
"github.com/myodc/go-micro/transport"
rpc "github.com/youtube/vitess/go/rpcplus"
js "github.com/youtube/vitess/go/rpcplus/jsonrpc"
pb "github.com/youtube/vitess/go/rpcplus/pbrpc"
)
type rpcPlusCodec struct {
socket transport.Socket
codec rpc.ServerCodec
req *transport.Message
wbuf *bytes.Buffer
rbuf *bytes.Buffer
}
func newRpcPlusCodec(req *transport.Message, socket transport.Socket) *rpcPlusCodec {
return &rpcPlusCodec{
socket: socket,
req: req,
wbuf: bytes.NewBuffer(nil),
rbuf: bytes.NewBuffer(nil),
}
}
func (c *rpcPlusCodec) ReadRequestHeader(r *rpc.Request) error {
c.rbuf.Reset()
c.rbuf.Write(c.req.Body)
buf := &buffer{c.rbuf}
switch c.req.Header["Content-Type"] {
case "application/octet-stream":
c.codec = pb.NewServerCodec(buf)
case "application/json":
c.codec = js.NewServerCodec(buf)
default:
return fmt.Errorf("unsupported content type %s", c.req.Header["Content-Type"])
}
return c.codec.ReadRequestHeader(r)
}
func (c *rpcPlusCodec) ReadRequestBody(r interface{}) error {
return c.codec.ReadRequestBody(r)
}
func (c *rpcPlusCodec) WriteResponse(r *rpc.Response, body interface{}, last bool) error {
c.wbuf.Reset()
buf := &buffer{c.wbuf}
var cc rpc.ServerCodec
switch c.req.Header["Content-Type"] {
case "application/octet-stream":
cc = pb.NewServerCodec(buf)
case "application/json":
cc = js.NewServerCodec(buf)
default:
return fmt.Errorf("unsupported request type: %s", c.req.Header["Content-Type"])
}
if err := cc.WriteResponse(r, body, last); err != nil {
return err
}
return c.socket.Send(&transport.Message{
Header: map[string]string{"Content-Type": c.req.Header["Content-Type"]},
Body: c.wbuf.Bytes(),
})
}
func (c *rpcPlusCodec) Close() error {
c.wbuf.Reset()
c.rbuf.Reset()
return c.socket.Close()
}

43
server/rpc_server.go
View File

@ -1,15 +1,11 @@
package server
import (
"bytes"
c "github.com/myodc/go-micro/context"
"github.com/myodc/go-micro/transport"
log "github.com/golang/glog"
rpc "github.com/youtube/vitess/go/rpcplus"
js "github.com/youtube/vitess/go/rpcplus/jsonrpc"
pb "github.com/youtube/vitess/go/rpcplus/pbrpc"
"golang.org/x/net/context"
)
@ -34,42 +30,17 @@ func (s *rpcServer) accept(sock transport.Socket) {
return
}
rbq := bytes.NewBuffer(msg.Body)
rsp := bytes.NewBuffer(nil)
defer rsp.Reset()
defer rbq.Reset()
buf := &buffer{
rbq,
rsp,
}
var cc rpc.ServerCodec
switch msg.Header["Content-Type"] {
case "application/octet-stream":
cc = pb.NewServerCodec(buf)
case "application/json":
cc = js.NewServerCodec(buf)
default:
return
}
codec := newRpcPlusCodec(&msg, sock)
// strip our headers
ct := msg.Header["Content-Type"]
delete(msg.Header, "Content-Type")
ctx := c.WithMetadata(context.Background(), msg.Header)
if err := s.rpc.ServeRequestWithContext(ctx, cc); err != nil {
return
hdr := make(map[string]string)
for k, v := range msg.Header {
hdr[k] = v
}
delete(hdr, "Content-Type")
sock.Send(&transport.Message{
Header: map[string]string{
"Content-Type": ct,
},
Body: rsp.Bytes(),
})
ctx := c.WithMetadata(context.Background(), hdr)
s.rpc.ServeRequestWithContext(ctx, codec)
}
func (s *rpcServer) Config() options {

12
server/server.go
View File

@ -50,6 +50,12 @@ func Address(a string) Option {
}
}
func Registry(r registry.Registry) Option {
return func(o *options) {
o.registry = r
}
}
func Transport(t transport.Transport) Option {
return func(o *options) {
o.transport = t
@ -121,9 +127,9 @@ func Run() error {
log.Infof("Registering node: %s", node.Id)
err := registry.Register(service)
err := config.registry.Register(service)
if err != nil {
log.Fatal("Failed to register: %v", err)
log.Fatalf("Failed to register: %v", err)
}
ch := make(chan os.Signal, 1)
@ -131,7 +137,7 @@ func Run() error {
log.Infof("Received signal %s", <-ch)
log.Infof("Deregistering %s", node.Id)
registry.Deregister(service)
config.registry.Deregister(service)
return Stop()
}

113
transport/http_transport.go
View File

@ -1,6 +1,7 @@
package transport
import (
"bufio"
"bytes"
"errors"
"io/ioutil"
@ -9,34 +10,27 @@ import (
"net/url"
)
type headerRoundTripper struct {
r http.RoundTripper
}
type httpTransport struct {
client *http.Client
}
type httpTransport struct{}
type httpTransportClient struct {
ht *httpTransport
addr string
ht *httpTransport
addr string
conn net.Conn
buff *bufio.Reader
dialOpts dialOptions
r chan *http.Request
}
type httpTransportSocket struct {
r *http.Request
w http.ResponseWriter
r *http.Request
conn net.Conn
}
type httpTransportListener struct {
listener net.Listener
}
func (t *headerRoundTripper) RoundTrip(r *http.Request) (*http.Response, error) {
r.Header.Set("X-Client-Version", "1.0")
return t.r.RoundTrip(r)
}
func (h *httpTransportClient) Send(m *Message) (*Message, error) {
func (h *httpTransportClient) Send(m *Message) error {
header := make(http.Header)
for k, v := range m.Header {
@ -49,7 +43,7 @@ func (h *httpTransportClient) Send(m *Message) (*Message, error) {
reqB,
}
hreq := &http.Request{
req := &http.Request{
Method: "POST",
URL: &url.URL{
Scheme: "http",
@ -61,15 +55,26 @@ func (h *httpTransportClient) Send(m *Message) (*Message, error) {
Host: h.addr,
}
rsp, err := h.ht.client.Do(hreq)
h.r <- req
return req.Write(h.conn)
}
func (h *httpTransportClient) Recv(m *Message) error {
var r *http.Request
if !h.dialOpts.stream {
r = <-h.r
}
rsp, err := http.ReadResponse(h.buff, r)
if err != nil {
return nil, err
return err
}
defer rsp.Body.Close()
b, err := ioutil.ReadAll(rsp.Body)
if err != nil {
return nil, err
return err
}
mr := &Message{
@ -85,11 +90,12 @@ func (h *httpTransportClient) Send(m *Message) (*Message, error) {
}
}
return mr, nil
*m = *mr
return nil
}
func (h *httpTransportClient) Close() error {
return nil
return h.conn.Close()
}
func (h *httpTransportSocket) Recv(m *Message) error {
@ -101,7 +107,7 @@ func (h *httpTransportSocket) Recv(m *Message) error {
if err != nil {
return err
}
h.r.Body.Close()
mr := &Message{
Header: make(map[string]string),
Body: b,
@ -120,16 +126,30 @@ func (h *httpTransportSocket) Recv(m *Message) error {
}
func (h *httpTransportSocket) Send(m *Message) error {
for k, v := range m.Header {
h.w.Header().Set(k, v)
b := bytes.NewBuffer(m.Body)
defer b.Reset()
rsp := &http.Response{
Header: h.r.Header,
Body: &buffer{b},
Status: "200 OK",
StatusCode: 200,
Proto: "HTTP/1.1",
ProtoMajor: 1,
ProtoMinor: 1,
ContentLength: int64(len(m.Body)),
// Request: h.r,
}
_, err := h.w.Write(m.Body)
return err
for k, v := range m.Header {
rsp.Header.Set(k, v)
}
return rsp.Write(h.conn)
}
func (h *httpTransportSocket) Close() error {
return nil
// TODO: fix this
return h.conn.Close()
}
func (h *httpTransportListener) Addr() string {
@ -143,9 +163,14 @@ func (h *httpTransportListener) Close() error {
func (h *httpTransportListener) Accept(fn func(Socket)) error {
srv := &http.Server{
Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
conn, _, err := w.(http.Hijacker).Hijack()
if err != nil {
return
}
fn(&httpTransportSocket{
r: r,
w: w,
conn: conn,
r: r,
})
}),
}
@ -153,10 +178,25 @@ func (h *httpTransportListener) Accept(fn func(Socket)) error {
return srv.Serve(h.listener)
}
func (h *httpTransport) Dial(addr string) (Client, error) {
func (h *httpTransport) Dial(addr string, opts ...DialOption) (Client, error) {
conn, err := net.Dial("tcp", addr)
if err != nil {
return nil, err
}
var dopts dialOptions
for _, opt := range opts {
opt(&dopts)
}
return &httpTransportClient{
ht: h,
addr: addr,
ht: h,
addr: addr,
conn: conn,
buff: bufio.NewReader(conn),
dialOpts: dopts,
r: make(chan *http.Request, 1),
}, nil
}
@ -172,8 +212,5 @@ func (h *httpTransport) Listen(addr string) (Listener, error) {
}
func newHttpTransport(addrs []string, opt ...Option) *httpTransport {
client := &http.Client{}
client.Transport = &headerRoundTripper{http.DefaultTransport}
return &httpTransport{client: client}
return &httpTransport{}
}

30
transport/nats/nats.go
View File

@ -17,6 +17,8 @@ type ntport struct {
type ntportClient struct {
conn *nats.Conn
addr string
id string
sub *nats.Subscription
}
type ntportSocket struct {
@ -30,26 +32,32 @@ type ntportListener struct {
exit chan bool
}
func (n *ntportClient) Send(m *transport.Message) (*transport.Message, error) {
func (n *ntportClient) Send(m *transport.Message) error {
b, err := json.Marshal(m)
if err != nil {
return nil, err
return err
}
rsp, err := n.conn.Request(n.addr, b, time.Second*10)
return n.conn.PublishRequest(n.addr, n.id, b)
}
func (n *ntportClient) Recv(m *transport.Message) error {
rsp, err := n.sub.NextMsg(time.Second * 10)
if err != nil {
return nil, err
return err
}
var mr *transport.Message
if err := json.Unmarshal(rsp.Data, &mr); err != nil {
return nil, err
return err
}
return mr, nil
*m = *mr
return nil
}
func (n *ntportClient) Close() error {
n.sub.Unsubscribe()
n.conn.Close()
return nil
}
@ -102,7 +110,7 @@ func (n *ntportListener) Accept(fn func(transport.Socket)) error {
return s.Unsubscribe()
}
func (n *ntport) Dial(addr string) (transport.Client, error) {
func (n *ntport) Dial(addr string, opts ...transport.DialOption) (transport.Client, error) {
cAddr := nats.DefaultURL
if len(n.addrs) > 0 && strings.HasPrefix(n.addrs[0], "nats://") {
@ -114,9 +122,17 @@ func (n *ntport) Dial(addr string) (transport.Client, error) {
return nil, err
}
id := nats.NewInbox()
sub, err := c.SubscribeSync(id)
if err != nil {
return nil, err
}
return &ntportClient{
conn: c,
addr: addr,
id: id,
sub: sub,
}, nil
}

158
transport/rabbitmq/rabbitmq.go
View File

@ -15,18 +15,21 @@ import (
type rmqtport struct {
conn *rabbitMQConn
addrs []string
}
type rmqtportClient struct {
once sync.Once
rt *rmqtport
addr string
replyTo string
sync.Mutex
inflight map[string]chan amqp.Delivery
}
type rmqtportClient struct {
rt *rmqtport
addr string
corId string
reply chan amqp.Delivery
}
type rmqtportSocket struct {
conn *rabbitMQConn
d *amqp.Delivery
@ -37,86 +40,34 @@ type rmqtportListener struct {
addr string
}
func (r *rmqtportClient) init() {
<-r.rt.conn.Init()
if err := r.rt.conn.Channel.DeclareReplyQueue(r.replyTo); err != nil {
return
}
deliveries, err := r.rt.conn.Channel.ConsumeQueue(r.replyTo)
if err != nil {
return
}
go func() {
for delivery := range deliveries {
go r.handle(delivery)
}
}()
}
func (r *rmqtportClient) handle(delivery amqp.Delivery) {
ch := r.getReq(delivery.CorrelationId)
if ch == nil {
return
}
select {
case ch <- delivery:
default:
}
}
func (r *rmqtportClient) putReq(id string) chan amqp.Delivery {
r.Lock()
ch := make(chan amqp.Delivery, 1)
r.inflight[id] = ch
r.Unlock()
return ch
}
func (r *rmqtportClient) getReq(id string) chan amqp.Delivery {
r.Lock()
defer r.Unlock()
if ch, ok := r.inflight[id]; ok {
delete(r.inflight, id)
return ch
}
return nil
}
func (r *rmqtportClient) Send(m *transport.Message) (*transport.Message, error) {
r.once.Do(r.init)
func (r *rmqtportClient) Send(m *transport.Message) error {
if !r.rt.conn.IsConnected() {
return nil, errors.New("Not connected to AMQP")
return errors.New("Not connected to AMQP")
}
id, err := uuid.NewV4()
if err != nil {
return nil, err
}
replyChan := r.putReq(id.String())
headers := amqp.Table{}
for k, v := range m.Header {
headers[k] = v
}
message := amqp.Publishing{
CorrelationId: id.String(),
CorrelationId: r.corId,
Timestamp: time.Now().UTC(),
Body: m.Body,
ReplyTo: r.replyTo,
ReplyTo: r.rt.replyTo,
Headers: headers,
}
if err := r.rt.conn.Publish("micro", r.addr, message); err != nil {
r.getReq(id.String())
return nil, err
return err
}
return nil
}
func (r *rmqtportClient) Recv(m *transport.Message) error {
select {
case d := <-replyChan:
case d := <-r.reply:
mr := &transport.Message{
Header: make(map[string]string),
Body: d.Body,
@ -126,13 +77,15 @@ func (r *rmqtportClient) Send(m *transport.Message) (*transport.Message, error)
mr.Header[k] = fmt.Sprintf("%v", v)
}
return mr, nil
*m = *mr
return nil
case <-time.After(time.Second * 10):
return nil, errors.New("timed out")
return errors.New("timed out")
}
}
func (r *rmqtportClient) Close() error {
r.rt.popReq(r.corId)
return nil
}
@ -202,17 +155,68 @@ func (r *rmqtportListener) Accept(fn func(transport.Socket)) error {
return nil
}
func (r *rmqtport) Dial(addr string) (transport.Client, error) {
func (r *rmqtport) putReq(id string) chan amqp.Delivery {
r.Lock()
ch := make(chan amqp.Delivery, 1)
r.inflight[id] = ch
r.Unlock()
return ch
}
func (r *rmqtport) getReq(id string) chan amqp.Delivery {
r.Lock()
defer r.Unlock()
if ch, ok := r.inflight[id]; ok {
return ch
}
return nil
}
func (r *rmqtport) popReq(id string) {
r.Lock()
defer r.Unlock()
if _, ok := r.inflight[id]; ok {
delete(r.inflight, id)
}
}
func (r *rmqtport) init() {
<-r.conn.Init()
if err := r.conn.Channel.DeclareReplyQueue(r.replyTo); err != nil {
return
}
deliveries, err := r.conn.Channel.ConsumeQueue(r.replyTo)
if err != nil {
return
}
go func() {
for delivery := range deliveries {
go r.handle(delivery)
}
}()
}
func (r *rmqtport) handle(delivery amqp.Delivery) {
ch := r.getReq(delivery.CorrelationId)
if ch == nil {
return
}
ch <- delivery
}
func (r *rmqtport) Dial(addr string, opts ...transport.DialOption) (transport.Client, error) {
id, err := uuid.NewV4()
if err != nil {
return nil, err
}
r.once.Do(r.init)
return &rmqtportClient{
rt: r,
addr: addr,
inflight: make(map[string]chan amqp.Delivery),
replyTo: fmt.Sprintf("replyTo-%s", id.String()),
rt: r,
addr: addr,
corId: id.String(),
reply: r.putReq(id.String()),
}, nil
}
@ -232,8 +236,12 @@ func (r *rmqtport) Listen(addr string) (transport.Listener, error) {
}
func NewTransport(addrs []string, opt ...transport.Option) transport.Transport {
id, _ := uuid.NewV4()
return &rmqtport{
conn: newRabbitMQConn("", addrs),
addrs: addrs,
conn: newRabbitMQConn("", addrs),
addrs: addrs,
replyTo: id.String(),
inflight: make(map[string]chan amqp.Delivery),
}
}

22
transport/transport.go
View File

@ -1,6 +1,7 @@
package transport
type Message struct {
Id string
Header map[string]string
Body []byte
}
@ -12,7 +13,8 @@ type Socket interface {
}
type Client interface {
Send(*Message) (*Message, error)
Recv(*Message) error
Send(*Message) error
Close() error
}
@ -23,24 +25,36 @@ type Listener interface {
}
type Transport interface {
Dial(addr string) (Client, error)
Dial(addr string, opts ...DialOption) (Client, error)
Listen(addr string) (Listener, error)
}
type options struct{}
type dialOptions struct {
stream bool
}
type Option func(*options)
type DialOption func(*dialOptions)
var (
DefaultTransport Transport = newHttpTransport([]string{})
)
func WithStream() DialOption {
return func(o *dialOptions) {
o.stream = true
}
}
func NewTransport(addrs []string, opt ...Option) Transport {
return newHttpTransport(addrs, opt...)
}
func Dial(addr string) (Client, error) {
return DefaultTransport.Dial(addr)
func Dial(addr string, opts ...DialOption) (Client, error) {
return DefaultTransport.Dial(addr, opts...)
}
func Listen(addr string) (Listener, error) {