implement watcher
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
parent
fcfa2f31d8
commit
7828935a5b
118
consul.go
118
consul.go
@ -3,10 +3,12 @@ package consul
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"reflect"
|
||||
|
||||
"github.com/hashicorp/consul/api"
|
||||
"github.com/imdario/mergo"
|
||||
"github.com/unistack-org/micro/v3/config"
|
||||
"github.com/unistack-org/micro/v3/util/jitter"
|
||||
rutil "github.com/unistack-org/micro/v3/util/reflect"
|
||||
)
|
||||
|
||||
@ -104,11 +106,16 @@ func (c *consulConfig) Load(ctx context.Context, opts ...config.LoadOption) erro
|
||||
mopts = append(mopts, mergo.WithAppendSlice)
|
||||
}
|
||||
|
||||
src, err := rutil.Zero(c.opts.Struct)
|
||||
dst := c.opts.Struct
|
||||
if options.Struct != nil {
|
||||
dst = options.Struct
|
||||
}
|
||||
|
||||
src, err := rutil.Zero(dst)
|
||||
if err == nil {
|
||||
err = c.opts.Codec.Unmarshal(pair.Value, src)
|
||||
if err == nil {
|
||||
err = mergo.Merge(c.opts.Struct, src, mopts...)
|
||||
err = mergo.Merge(dst, src, mopts...)
|
||||
}
|
||||
}
|
||||
|
||||
@ -160,6 +167,113 @@ func (c *consulConfig) Name() string {
|
||||
return c.opts.Name
|
||||
}
|
||||
|
||||
func (c *consulConfig) Watch(ctx context.Context, opts ...config.WatchOption) (config.Watcher, error) {
|
||||
w := &consulWatcher{
|
||||
cli: c.cli,
|
||||
path: c.path,
|
||||
opts: c.opts,
|
||||
wopts: config.NewWatchOptions(opts...),
|
||||
done: make(chan struct{}),
|
||||
vchan: make(chan map[string]interface{}),
|
||||
echan: make(chan error),
|
||||
}
|
||||
|
||||
go w.run()
|
||||
|
||||
return w, nil
|
||||
}
|
||||
|
||||
type consulWatcher struct {
|
||||
cli *api.Client
|
||||
path string
|
||||
opts config.Options
|
||||
wopts config.WatchOptions
|
||||
done chan struct{}
|
||||
vchan chan map[string]interface{}
|
||||
echan chan error
|
||||
}
|
||||
|
||||
func (w *consulWatcher) run() {
|
||||
ticker := jitter.NewTicker(w.wopts.MinInterval, w.wopts.MaxInterval)
|
||||
defer ticker.Stop()
|
||||
|
||||
src := w.opts.Struct
|
||||
if w.wopts.Struct != nil {
|
||||
src = w.wopts.Struct
|
||||
}
|
||||
|
||||
for {
|
||||
select {
|
||||
case <-w.done:
|
||||
return
|
||||
case <-ticker.C:
|
||||
dst, err := rutil.Zero(src)
|
||||
if err != nil {
|
||||
w.echan <- err
|
||||
return
|
||||
}
|
||||
|
||||
pair, _, err := w.cli.KV().Get(w.path, nil)
|
||||
if err != nil {
|
||||
w.echan <- err
|
||||
return
|
||||
}
|
||||
|
||||
if pair == nil {
|
||||
w.echan <- fmt.Errorf("consul path %s not found", w.path)
|
||||
return
|
||||
}
|
||||
|
||||
err = w.opts.Codec.Unmarshal(pair.Value, dst)
|
||||
if err != nil {
|
||||
w.echan <- err
|
||||
return
|
||||
}
|
||||
|
||||
srcmp, err := rutil.StructFieldsMap(src)
|
||||
if err != nil {
|
||||
w.echan <- err
|
||||
return
|
||||
}
|
||||
|
||||
dstmp, err := rutil.StructFieldsMap(dst)
|
||||
if err != nil {
|
||||
w.echan <- err
|
||||
return
|
||||
}
|
||||
|
||||
for sk, sv := range srcmp {
|
||||
if reflect.DeepEqual(dstmp[sk], sv) {
|
||||
delete(dstmp, sk)
|
||||
}
|
||||
}
|
||||
|
||||
w.vchan <- dstmp
|
||||
src = dst
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (w *consulWatcher) Next() (map[string]interface{}, error) {
|
||||
select {
|
||||
case <-w.done:
|
||||
break
|
||||
case err := <-w.echan:
|
||||
return nil, err
|
||||
case v, ok := <-w.vchan:
|
||||
if !ok {
|
||||
break
|
||||
}
|
||||
return v, nil
|
||||
}
|
||||
return nil, config.ErrWatcherStopped
|
||||
}
|
||||
|
||||
func (w *consulWatcher) Stop() error {
|
||||
close(w.done)
|
||||
return nil
|
||||
}
|
||||
|
||||
func NewConfig(opts ...config.Option) config.Config {
|
||||
options := config.NewOptions(opts...)
|
||||
if len(options.StructTag) == 0 {
|
||||
|
||||
2
go.mod
2
go.mod
@ -9,5 +9,5 @@ require (
|
||||
github.com/hashicorp/golang-lru v0.5.3 // indirect
|
||||
github.com/imdario/mergo v0.3.12
|
||||
github.com/pkg/errors v0.9.1 // indirect
|
||||
github.com/unistack-org/micro/v3 v3.4.0
|
||||
github.com/unistack-org/micro/v3 v3.5.8
|
||||
)
|
||||
|
||||
10
go.sum
10
go.sum
@ -7,15 +7,15 @@ github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kB
|
||||
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
|
||||
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
|
||||
github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
|
||||
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
|
||||
github.com/fatih/color v1.9.0 h1:8xPHl4/q1VyqGIPif1F+1V3Y3lSmrq01EabUW3CoW5s=
|
||||
github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
|
||||
github.com/golang-jwt/jwt v3.2.2+incompatible/go.mod h1:8pz2t5EyA70fFQQSrl6XZXzqecmYZeUEB8OUGHkxJ+I=
|
||||
github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
|
||||
github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
|
||||
github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
|
||||
github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
|
||||
github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
|
||||
github.com/hashicorp/consul/api v1.8.1 h1:BOEQaMWoGMhmQ29fC26bi0qb7/rId9JzZP2V0Xmx7m8=
|
||||
github.com/hashicorp/consul/api v1.8.1/go.mod h1:sDjTOq0yUyv5G4h+BqSea7Fn6BU+XbolEz1952UB+mk=
|
||||
github.com/hashicorp/consul/sdk v0.7.0 h1:H6R9d008jDcHPQPAqPNuydAshJ4v5/8URdFnUvK/+sc=
|
||||
@ -25,8 +25,6 @@ github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brv
|
||||
github.com/hashicorp/go-cleanhttp v0.5.1 h1:dH3aiDG9Jvb5r5+bYHsikaOUIpcM0xvgMXVoDkXMzJM=
|
||||
github.com/hashicorp/go-cleanhttp v0.5.1/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80=
|
||||
github.com/hashicorp/go-hclog v0.12.0/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
|
||||
github.com/hashicorp/go-hclog v0.16.0 h1:uCeOEwSWGMwhJUdpUjk+1cVKIEfGu2/1nFXukimi2MU=
|
||||
github.com/hashicorp/go-hclog v0.16.0/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
|
||||
github.com/hashicorp/go-hclog v0.16.1 h1:IVQwpTGNRRIHafnTs2dQLIk4ENtneRIEEJWOVDqz99o=
|
||||
github.com/hashicorp/go-hclog v0.16.1/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
|
||||
github.com/hashicorp/go-immutable-radix v1.0.0 h1:AKDB1HM5PWEA7i4nhcpwOrO2byshxBjXVn/J/3+z5/0=
|
||||
@ -97,8 +95,8 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
|
||||
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
|
||||
github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
|
||||
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
|
||||
github.com/unistack-org/micro/v3 v3.4.0 h1:z9F3lgAb2j4cZ1ib5qBj66JPYUAzR4sNIJqUDjVwyVQ=
|
||||
github.com/unistack-org/micro/v3 v3.4.0/go.mod h1:LXmPfbJnJNvL0kQs8HfnkV3Wya2Wb+C7keVq++RCZnk=
|
||||
github.com/unistack-org/micro/v3 v3.5.8 h1:7kuNW7Pih3LYUA0DuVt9l87LjtT4rsqDFyTYLrLtNNI=
|
||||
github.com/unistack-org/micro/v3 v3.5.8/go.mod h1:zQnZPEy842kQNcyjmVys6tdMjty4PHdyUUKYm1wrg1s=
|
||||
golang.org/x/crypto v0.0.0-20181029021203-45a5f77698d3/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
|
||||
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
||||
golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392 h1:ACG4HJsFiNMf47Y4PeRoebLNy/2lXT9EtprMuTFWt1M=
|
||||
|
||||
Loading…
Reference in New Issue
Block a user