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Merge pull request #393 from micro/legacy

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Evolution of Codecs and Methods
This commit is contained in:
Asim Aslam 2019-01-18 12:40:05 +00:00 committed by GitHub
commit 943219f203
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GPG Key ID: 4AEE18F83AFDEB23
17 changed files with 214 additions and 59 deletions
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4
client/client.go
View File

@ -38,7 +38,9 @@ type Message interface {
type Request interface {
// The service to call
Service() string
// The endpoint to call
// The action to take
Method() string
// The endpoint to invoke
Endpoint() string
// The content type
ContentType() string

72
client/rpc_client.go
View File

@ -4,10 +4,11 @@ import (
"bytes"
"context"
"fmt"
"net"
"strconv"
"sync"
"time"
"sync/atomic"
"time"
"github.com/google/uuid"
"github.com/micro/go-micro/broker"
@ -56,7 +57,12 @@ func (r *rpcClient) newCodec(contentType string) (codec.NewCodec, error) {
return nil, fmt.Errorf("Unsupported Content-Type: %s", contentType)
}
func (r *rpcClient) call(ctx context.Context, address string, req Request, resp interface{}, opts CallOptions) error {
func (r *rpcClient) call(ctx context.Context, node *registry.Node, req Request, resp interface{}, opts CallOptions) error {
address := node.Address
if node.Port > 0 {
address = fmt.Sprintf("%s:%d", address, node.Port)
}
msg := &transport.Message{
Header: make(map[string]string),
}
@ -75,9 +81,16 @@ func (r *rpcClient) call(ctx context.Context, address string, req Request, resp
// set the accept header
msg.Header["Accept"] = req.ContentType()
cf, err := r.newCodec(req.ContentType())
if err != nil {
return errors.InternalServerError("go.micro.client", err.Error())
// setup old protocol
cf := setupProtocol(msg, node)
// no codec specified
if cf == nil {
var err error
cf, err = r.newCodec(req.ContentType())
if err != nil {
return errors.InternalServerError("go.micro.client", err.Error())
}
}
var grr error
@ -144,7 +157,12 @@ func (r *rpcClient) call(ctx context.Context, address string, req Request, resp
}
}
func (r *rpcClient) stream(ctx context.Context, address string, req Request, opts CallOptions) (Stream, error) {
func (r *rpcClient) stream(ctx context.Context, node *registry.Node, req Request, opts CallOptions) (Stream, error) {
address := node.Address
if node.Port > 0 {
address = fmt.Sprintf("%s:%d", address, node.Port)
}
msg := &transport.Message{
Header: make(map[string]string),
}
@ -163,9 +181,16 @@ func (r *rpcClient) stream(ctx context.Context, address string, req Request, opt
// set the accept header
msg.Header["Accept"] = req.ContentType()
cf, err := r.newCodec(req.ContentType())
if err != nil {
return nil, errors.InternalServerError("go.micro.client", err.Error())
// set old codecs
cf := setupProtocol(msg, node)
// no codec specified
if cf == nil {
var err error
cf, err = r.newCodec(req.ContentType())
if err != nil {
return nil, errors.InternalServerError("go.micro.client", err.Error())
}
}
dOpts := []transport.DialOption{
@ -245,9 +270,19 @@ func (r *rpcClient) Options() Options {
func (r *rpcClient) next(request Request, opts CallOptions) (selector.Next, error) {
// return remote address
if len(opts.Address) > 0 {
address := opts.Address
port := 0
host, sport, err := net.SplitHostPort(opts.Address)
if err == nil {
address = host
port, _ = strconv.Atoi(sport)
}
return func() (*registry.Node, error) {
return &registry.Node{
Address: opts.Address,
Address: address,
Port: port,
}, nil
}, nil
}
@ -323,14 +358,8 @@ func (r *rpcClient) Call(ctx context.Context, request Request, response interfac
return errors.InternalServerError("go.micro.client", "error getting next %s node: %v", request.Service(), err.Error())
}
// set the address
address := node.Address
if node.Port > 0 {
address = fmt.Sprintf("%s:%d", address, node.Port)
}
// make the call
err = rcall(ctx, address, request, response, callOpts)
err = rcall(ctx, node, request, response, callOpts)
r.opts.Selector.Mark(request.Service(), node, err)
return err
}
@ -406,12 +435,7 @@ func (r *rpcClient) Stream(ctx context.Context, request Request, opts ...CallOpt
return nil, errors.InternalServerError("go.micro.client", "error getting next %s node: %v", request.Service(), err.Error())
}
address := node.Address
if node.Port > 0 {
address = fmt.Sprintf("%s:%d", address, node.Port)
}
stream, err := r.stream(ctx, address, request, callOpts)
stream, err := r.stream(ctx, node, request, callOpts)
r.opts.Selector.Mark(request.Service(), node, err)
return stream, err
}

30
client/rpc_client_test.go
View File

@ -21,10 +21,11 @@ func TestCallAddress(t *testing.T) {
var called bool
service := "test.service"
endpoint := "Test.Endpoint"
address := "10.1.10.1:8080"
address := "10.1.10.1"
port := 8080
wrap := func(cf CallFunc) CallFunc {
return func(ctx context.Context, addr string, req Request, rsp interface{}, opts CallOptions) error {
return func(ctx context.Context, node *registry.Node, req Request, rsp interface{}, opts CallOptions) error {
called = true
if req.Service() != service {
@ -35,8 +36,12 @@ func TestCallAddress(t *testing.T) {
return fmt.Errorf("expected service: %s got %s", endpoint, req.Endpoint())
}
if addr != address {
return fmt.Errorf("expected address: %s got %s", address, addr)
if node.Address != address {
return fmt.Errorf("expected address: %s got %s", address, node.Address)
}
if node.Port != port {
return fmt.Errorf("expected address: %d got %d", port, node.Port)
}
// don't do the call
@ -54,7 +59,7 @@ func TestCallAddress(t *testing.T) {
req := c.NewRequest(service, endpoint, nil)
// test calling remote address
if err := c.Call(context.Background(), req, nil, WithAddress(address)); err != nil {
if err := c.Call(context.Background(), req, nil, WithAddress(fmt.Sprintf("%s:%d", address, port))); err != nil {
t.Fatal("call with address error", err)
}
@ -67,12 +72,12 @@ func TestCallAddress(t *testing.T) {
func TestCallRetry(t *testing.T) {
service := "test.service"
endpoint := "Test.Endpoint"
address := "10.1.10.1:8080"
address := "10.1.10.1"
var called int
wrap := func(cf CallFunc) CallFunc {
return func(ctx context.Context, addr string, req Request, rsp interface{}, opts CallOptions) error {
return func(ctx context.Context, node *registry.Node, req Request, rsp interface{}, opts CallOptions) error {
called++
if called == 1 {
return errors.InternalServerError("test.error", "retry request")
@ -108,12 +113,11 @@ func TestCallWrapper(t *testing.T) {
id := "test.1"
service := "test.service"
endpoint := "Test.Endpoint"
host := "10.1.10.1"
address := "10.1.10.1"
port := 8080
address := "10.1.10.1:8080"
wrap := func(cf CallFunc) CallFunc {
return func(ctx context.Context, addr string, req Request, rsp interface{}, opts CallOptions) error {
return func(ctx context.Context, node *registry.Node, req Request, rsp interface{}, opts CallOptions) error {
called = true
if req.Service() != service {
@ -124,8 +128,8 @@ func TestCallWrapper(t *testing.T) {
return fmt.Errorf("expected service: %s got %s", endpoint, req.Endpoint())
}
if addr != address {
return fmt.Errorf("expected address: %s got %s", address, addr)
if node.Address != address {
return fmt.Errorf("expected address: %s got %s", address, node.Address)
}
// don't do the call
@ -146,7 +150,7 @@ func TestCallWrapper(t *testing.T) {
Nodes: []*registry.Node{
&registry.Node{
Id: id,
Address: host,
Address: address,
Port: port,
},
},

40
client/rpc_codec.go
View File

@ -12,6 +12,7 @@ import (
"github.com/micro/go-micro/codec/proto"
"github.com/micro/go-micro/codec/protorpc"
"github.com/micro/go-micro/errors"
"github.com/micro/go-micro/registry"
"github.com/micro/go-micro/transport"
)
@ -58,6 +59,15 @@ var (
"application/proto-rpc": protorpc.NewCodec,
"application/octet-stream": raw.NewCodec,
}
// TODO: remove legacy codec list
defaultCodecs = map[string]codec.NewCodec{
"application/json": jsonrpc.NewCodec,
"application/json-rpc": jsonrpc.NewCodec,
"application/protobuf": protorpc.NewCodec,
"application/proto-rpc": protorpc.NewCodec,
"application/octet-stream": protorpc.NewCodec,
}
)
func (rwc *readWriteCloser) Read(p []byte) (n int, err error) {
@ -74,6 +84,27 @@ func (rwc *readWriteCloser) Close() error {
return nil
}
// setupProtocol sets up the old protocol
func setupProtocol(msg *transport.Message, node *registry.Node) codec.NewCodec {
protocol := node.Metadata["protocol"]
// got protocol
if len(protocol) > 0 {
return nil
}
// no protocol use old codecs
switch msg.Header["Content-Type"] {
case "application/json":
msg.Header["Content-Type"] = "application/json-rpc"
case "application/protobuf":
msg.Header["Content-Type"] = "application/proto-rpc"
}
// now return codec
return defaultCodecs[msg.Header["Content-Type"]]
}
func newRpcCodec(req *transport.Message, client transport.Client, c codec.NewCodec) codec.Codec {
rwc := &readWriteCloser{
wbuf: bytes.NewBuffer(nil),
@ -104,6 +135,7 @@ func (c *rpcCodec) Write(m *codec.Message, body interface{}) error {
// set the mucp headers
m.Header["X-Micro-Id"] = m.Id
m.Header["X-Micro-Service"] = m.Target
m.Header["X-Micro-Method"] = m.Method
m.Header["X-Micro-Endpoint"] = m.Endpoint
// if body is bytes Frame don't encode
@ -154,6 +186,7 @@ func (c *rpcCodec) ReadHeader(wm *codec.Message, r codec.MessageType) error {
// read header
err := c.codec.ReadHeader(&me, r)
wm.Endpoint = me.Endpoint
wm.Method = me.Method
wm.Id = me.Id
wm.Error = me.Error
@ -162,11 +195,16 @@ func (c *rpcCodec) ReadHeader(wm *codec.Message, r codec.MessageType) error {
wm.Error = me.Header["X-Micro-Error"]
}
// check method in header
// check endpoint in header
if len(me.Endpoint) == 0 {
wm.Endpoint = me.Header["X-Micro-Endpoint"]
}
// check method in header
if len(me.Method) == 0 {
wm.Method = me.Header["X-Micro-Method"]
}
if len(me.Id) == 0 {
wm.Id = me.Header["X-Micro-Id"]
}

6
client/rpc_request.go
View File

@ -6,6 +6,7 @@ import (
type rpcRequest struct {
service string
method string
endpoint string
contentType string
codec codec.Codec
@ -27,6 +28,7 @@ func newRequest(service, endpoint string, request interface{}, contentType strin
return &rpcRequest{
service: service,
method: endpoint,
endpoint: endpoint,
body: request,
contentType: contentType,
@ -42,6 +44,10 @@ func (r *rpcRequest) Service() string {
return r.service
}
func (r *rpcRequest) Method() string {
return r.method
}
func (r *rpcRequest) Endpoint() string {
return r.endpoint
}

1
client/rpc_stream.go
View File

@ -53,6 +53,7 @@ func (r *rpcStream) Send(msg interface{}) error {
req := codec.Message{
Id: r.id,
Target: r.request.Service(),
Method: r.request.Method(),
Endpoint: r.request.Endpoint(),
Type: codec.Request,
}

4
client/wrapper.go
View File

@ -2,10 +2,12 @@ package client
import (
"context"
"github.com/micro/go-micro/registry"
)
// CallFunc represents the individual call func
type CallFunc func(ctx context.Context, address string, req Request, rsp interface{}, opts CallOptions) error
type CallFunc func(ctx context.Context, node *registry.Node, req Request, rsp interface{}, opts CallOptions) error
// CallWrapper is a low level wrapper for the CallFunc
type CallWrapper func(CallFunc) CallFunc

1
codec/codec.go
View File

@ -53,6 +53,7 @@ type Message struct {
Id string
Type MessageType
Target string
Method string
Endpoint string
Error string

6
codec/jsonrpc/client.go
View File

@ -45,9 +45,9 @@ func newClientCodec(conn io.ReadWriteCloser) *clientCodec {
func (c *clientCodec) Write(m *codec.Message, b interface{}) error {
c.Lock()
c.pending[m.Id] = m.Endpoint
c.pending[m.Id] = m.Method
c.Unlock()
c.req.Method = m.Endpoint
c.req.Method = m.Method
c.req.Params[0] = b
c.req.ID = m.Id
return c.enc.Encode(&c.req)
@ -66,7 +66,7 @@ func (c *clientCodec) ReadHeader(m *codec.Message) error {
}
c.Lock()
m.Endpoint = c.pending[c.resp.ID]
m.Method = c.pending[c.resp.ID]
delete(c.pending, c.resp.ID)
c.Unlock()

2
codec/jsonrpc/server.go
View File

@ -53,7 +53,7 @@ func (c *serverCodec) ReadHeader(m *codec.Message) error {
if err := c.dec.Decode(&c.req); err != nil {
return err
}
m.Endpoint = c.req.Method
m.Method = c.req.Method
m.Id = fmt.Sprintf("%v", c.req.ID)
c.req.ID = nil
return nil

8
codec/protorpc/protorpc.go
View File

@ -47,7 +47,7 @@ func (c *protoCodec) Write(m *codec.Message, b interface{}) error {
c.Lock()
defer c.Unlock()
// This is protobuf, of course we copy it.
pbr := &Request{ServiceMethod: &m.Endpoint, Seq: id(m.Id)}
pbr := &Request{ServiceMethod: &m.Method, Seq: id(m.Id)}
data, err := proto.Marshal(pbr)
if err != nil {
return err
@ -73,7 +73,7 @@ func (c *protoCodec) Write(m *codec.Message, b interface{}) error {
case codec.Response, codec.Error:
c.Lock()
defer c.Unlock()
rtmp := &Response{ServiceMethod: &m.Endpoint, Seq: id(m.Id), Error: &m.Error}
rtmp := &Response{ServiceMethod: &m.Method, Seq: id(m.Id), Error: &m.Error}
data, err := proto.Marshal(rtmp)
if err != nil {
return err
@ -126,7 +126,7 @@ func (c *protoCodec) ReadHeader(m *codec.Message, mt codec.MessageType) error {
if err != nil {
return err
}
m.Endpoint = rtmp.GetServiceMethod()
m.Method = rtmp.GetServiceMethod()
m.Id = fmt.Sprintf("%d", rtmp.GetSeq())
case codec.Response:
data, err := ReadNetString(c.rwc)
@ -138,7 +138,7 @@ func (c *protoCodec) ReadHeader(m *codec.Message, mt codec.MessageType) error {
if err != nil {
return err
}
m.Endpoint = rtmp.GetServiceMethod()
m.Method = rtmp.GetServiceMethod()
m.Id = fmt.Sprintf("%d", rtmp.GetSeq())
m.Error = rtmp.GetError()
case codec.Publication:

59
server/rpc_codec.go
View File

@ -41,6 +41,15 @@ var (
"application/proto-rpc": protorpc.NewCodec,
"application/octet-stream": raw.NewCodec,
}
// TODO: remove legacy codec list
defaultCodecs = map[string]codec.NewCodec{
"application/json": jsonrpc.NewCodec,
"application/json-rpc": jsonrpc.NewCodec,
"application/protobuf": protorpc.NewCodec,
"application/proto-rpc": protorpc.NewCodec,
"application/octet-stream": protorpc.NewCodec,
}
)
func (rwc *readWriteCloser) Read(p []byte) (n int, err error) {
@ -57,6 +66,42 @@ func (rwc *readWriteCloser) Close() error {
return nil
}
// setupProtocol sets up the old protocol
func setupProtocol(msg *transport.Message) codec.NewCodec {
service := msg.Header["X-Micro-Service"]
method := msg.Header["X-Micro-Method"]
endpoint := msg.Header["X-Micro-Endpoint"]
protocol := msg.Header["X-Micro-Protocol"]
target := msg.Header["X-Micro-Target"]
// if the protocol exists (mucp) do nothing
if len(protocol) > 0 {
return nil
}
// if no service/method/endpoint then it's the old protocol
if len(service) == 0 && len(method) == 0 && len(endpoint) == 0 {
return defaultCodecs[msg.Header["Content-Type"]]
}
// old target method specified
if len(target) > 0 {
return defaultCodecs[msg.Header["Content-Type"]]
}
// no method then set to endpoint
if len(method) == 0 {
msg.Header["X-Micro-Method"] = method
}
// no endpoint then set to method
if len(endpoint) == 0 {
msg.Header["X-Micro-Endpoint"] = method
}
return nil
}
func newRpcCodec(req *transport.Message, socket transport.Socket, c codec.NewCodec) codec.Codec {
rwc := &readWriteCloser{
rbuf: bytes.NewBuffer(req.Body),
@ -109,6 +154,7 @@ func (c *rpcCodec) ReadHeader(r *codec.Message, t codec.MessageType) error {
// set some internal things
m.Target = m.Header["X-Micro-Service"]
m.Method = m.Header["X-Micro-Method"]
m.Endpoint = m.Header["X-Micro-Endpoint"]
m.Id = m.Header["X-Micro-Id"]
@ -116,9 +162,15 @@ func (c *rpcCodec) ReadHeader(r *codec.Message, t codec.MessageType) error {
err := c.codec.ReadHeader(&m, codec.Request)
// set the method/id
r.Method = m.Method
r.Endpoint = m.Endpoint
r.Id = m.Id
// TODO: remove the old legacy cruft
if len(r.Endpoint) == 0 {
r.Endpoint = r.Method
}
return err
}
@ -141,6 +193,8 @@ func (c *rpcCodec) Write(r *codec.Message, b interface{}) error {
// create a new message
m := &codec.Message{
Target: r.Target,
Method: r.Method,
Endpoint: r.Endpoint,
Id: r.Id,
Error: r.Error,
@ -162,6 +216,11 @@ func (c *rpcCodec) Write(r *codec.Message, b interface{}) error {
m.Header["X-Micro-Service"] = r.Target
}
// set request method
if len(r.Method) > 0 {
m.Header["X-Micro-Method"] = r.Method
}
// set request endpoint
if len(r.Endpoint) > 0 {
m.Header["X-Micro-Endpoint"] = r.Endpoint

5
server/rpc_request.go
View File

@ -7,6 +7,7 @@ import (
type rpcRequest struct {
service string
method string
endpoint string
contentType string
socket transport.Socket
@ -34,6 +35,10 @@ func (r *rpcRequest) Service() string {
return r.service
}
func (r *rpcRequest) Method() string {
return r.method
}
func (r *rpcRequest) Endpoint() string {
return r.endpoint
}

1
server/rpc_router.go
View File

@ -189,6 +189,7 @@ func (s *service) call(ctx context.Context, router *router, sending *sync.Mutex,
r := &rpcRequest{
service: req.msg.Target,
contentType: req.msg.Header["Content-Type"],
method: req.msg.Method,
endpoint: req.msg.Endpoint,
body: req.msg.Body,
}

30
server/rpc_server.go
View File

@ -97,17 +97,23 @@ func (s *rpcServer) ServeConn(sock transport.Socket) {
ct = DefaultContentType
}
// TODO: needs better error handling
cf, err := s.newCodec(ct)
if err != nil {
sock.Send(&transport.Message{
Header: map[string]string{
"Content-Type": "text/plain",
},
Body: []byte(err.Error()),
})
s.wg.Done()
return
// setup old protocol
cf := setupProtocol(&msg)
// no old codec
if cf == nil {
// TODO: needs better error handling
var err error
if cf, err = s.newCodec(ct); err != nil {
sock.Send(&transport.Message{
Header: map[string]string{
"Content-Type": "text/plain",
},
Body: []byte(err.Error()),
})
s.wg.Done()
return
}
}
rcodec := newRpcCodec(&msg, sock, cf)
@ -115,6 +121,7 @@ func (s *rpcServer) ServeConn(sock transport.Socket) {
// internal request
request := &rpcRequest{
service: msg.Header["X-Micro-Service"],
method: msg.Header["X-Micro-Method"],
endpoint: msg.Header["X-Micro-Endpoint"],
contentType: ct,
codec: rcodec,
@ -276,6 +283,7 @@ func (s *rpcServer) Register() error {
node.Metadata["broker"] = config.Broker.String()
node.Metadata["server"] = s.String()
node.Metadata["registry"] = config.Registry.String()
node.Metadata["protocol"] = "mucp"
s.RLock()
// Maps are ordered randomly, sort the keys for consistency

2
server/rpc_stream.go
View File

@ -31,6 +31,8 @@ func (r *rpcStream) Send(msg interface{}) error {
defer r.Unlock()
resp := codec.Message{
Target: r.request.Service(),
Method: r.request.Method(),
Endpoint: r.request.Endpoint(),
Id: r.id,
Type: codec.Response,

2
server/server.go
View File

@ -45,6 +45,8 @@ type Message interface {
type Request interface {
// Service name requested
Service() string
// The action requested
Method() string
// Endpoint name requested
Endpoint() string
// Content type provided