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Add request timeout

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Asim 2016-01-03 21:14:33 +00:00
parent 1037663acf
commit 332a229169
3 changed files with 73 additions and 27 deletions
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5
client/client.go
View File

@ -22,6 +22,8 @@ supported.
package client
import (
"time"
"golang.org/x/net/context"
)
@ -71,6 +73,9 @@ type RequestOption func(*RequestOptions)
var (
DefaultClient Client = newRpcClient()
DefaultRetries = 1
DefaultRequestTimeout = time.Second * 5
)
// Makes a synchronous call to a service using the default client

38
client/options.go
View File

@ -1,6 +1,8 @@
package client
import (
"time"
"github.com/micro/go-micro/broker"
"github.com/micro/go-micro/codec"
"github.com/micro/go-micro/registry"
@ -9,14 +11,15 @@ import (
)
type Options struct {
ContentType string
Broker broker.Broker
Codecs map[string]codec.NewCodec
Registry registry.Registry
Selector selector.Selector
Transport transport.Transport
Wrappers []Wrapper
Retries int
ContentType string
Broker broker.Broker
Codecs map[string]codec.NewCodec
Registry registry.Registry
Selector selector.Selector
Transport transport.Transport
Wrappers []Wrapper
Retries int
RequestTimeout time.Duration
// Other options to be used by client implementations
Options map[string]string
@ -43,17 +46,15 @@ type RequestOptions struct {
func newOptions(options ...Option) Options {
opts := Options{
Codecs: make(map[string]codec.NewCodec),
Codecs: make(map[string]codec.NewCodec),
Retries: DefaultRetries,
RequestTimeout: DefaultRequestTimeout,
}
for _, o := range options {
o(&opts)
}
if opts.Retries == 0 {
opts.Retries = 1
}
if len(opts.ContentType) == 0 {
opts.ContentType = defaultContentType
}
@ -128,13 +129,22 @@ func Wrap(w Wrapper) Option {
}
}
// Number of retries when making the request
// Number of retries when making the request.
// Should this be a Call Option?
func Retries(i int) Option {
return func(o *Options) {
o.Retries = i
}
}
// The request timeout.
// Should this be a Call Option?
func RequestTimeout(d time.Duration) Option {
return func(o *Options) {
o.RequestTimeout = d
}
}
// Call Options
func WithSelectOption(so selector.SelectOption) CallOption {

57
client/rpc_client.go
View File

@ -4,6 +4,7 @@ import (
"bytes"
"fmt"
"sync"
"time"
"github.com/micro/go-micro/broker"
"github.com/micro/go-micro/codec"
@ -76,11 +77,24 @@ func (r *rpcClient) call(ctx context.Context, address string, request Request, r
defer c.Close()
client := newClientWithCodec(newRpcPlusCodec(msg, c, cf))
err = client.Call(ctx, request.Service(), request.Method(), request.Request(), response)
if err != nil {
return err
defer client.Close()
ch := make(chan error, 1)
go func() {
select {
case ch <- client.Call(ctx, request.Service(), request.Method(), request.Request(), response):
default:
}
}()
select {
case err = <-ch:
case <-time.After(r.opts.RequestTimeout):
err = errors.New("go.micro.client", "request timeout", 408)
}
return client.Close()
return err
}
func (r *rpcClient) stream(ctx context.Context, address string, req Request) (Streamer, error) {
@ -116,7 +130,21 @@ func (r *rpcClient) stream(ctx context.Context, address string, req Request) (St
codec: newRpcPlusCodec(msg, c, cf),
}
err = stream.Send(req.Request())
ch := make(chan error, 1)
go func() {
select {
case ch <- stream.Send(req.Request()):
default:
}
}()
select {
case err = <-ch:
case <-time.After(r.opts.RequestTimeout):
err = errors.New("go.micro.client", "request timeout", 408)
}
return stream, err
}
@ -148,6 +176,8 @@ func (r *rpcClient) Call(ctx context.Context, request Request, response interfac
return errors.InternalServerError("go.micro.client", err.Error())
}
var grr error
for i := 0; i < r.opts.Retries; i++ {
node, err := next()
if err != nil && err == selector.ErrNotFound {
@ -161,16 +191,16 @@ func (r *rpcClient) Call(ctx context.Context, request Request, response interfac
address = fmt.Sprintf("%s:%d", address, node.Port)
}
err = r.call(ctx, address, request, response)
r.opts.Selector.Mark(request.Service(), node, err)
grr = r.call(ctx, address, request, response)
r.opts.Selector.Mark(request.Service(), node, grr)
// if the call succeeded lets bail early
if err == nil {
if grr == nil {
return nil
}
}
return err
return grr
}
func (r *rpcClient) StreamRemote(ctx context.Context, address string, request Request, opts ...CallOption) (Streamer, error) {
@ -191,6 +221,7 @@ func (r *rpcClient) Stream(ctx context.Context, request Request, opts ...CallOpt
}
var stream Streamer
var grr error
for i := 0; i < r.opts.Retries; i++ {
node, err := next()
@ -205,16 +236,16 @@ func (r *rpcClient) Stream(ctx context.Context, request Request, opts ...CallOpt
address = fmt.Sprintf("%s:%d", address, node.Port)
}
stream, err = r.stream(ctx, address, request)
r.opts.Selector.Mark(request.Service(), node, err)
stream, grr = r.stream(ctx, address, request)
r.opts.Selector.Mark(request.Service(), node, grr)
// bail early if succeeds
if err == nil {
if grr == nil {
return stream, nil
}
}
return stream, err
return stream, grr
}
func (r *rpcClient) Publish(ctx context.Context, p Publication, opts ...PublishOption) error {