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micro-config-consul
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config: minor changes to split config and watcher files 

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
Василий Толстов 2021-08-04 13:53:22 +03:00
parent 0501ba2bac
commit 30826a6959
2 changed files with 103 additions and 94 deletions
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94
consul.go
View File

@ -3,12 +3,10 @@ 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"
)
@ -183,98 +181,6 @@ func (c *consulConfig) Watch(ctx context.Context, opts ...config.WatchOption) (c
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)
}
}
if len(dstmp) > 0 {
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 {

103
watcher.go Normal file
View File

@ -0,0 +1,103 @@
package consul
import (
"fmt"
"reflect"
"github.com/hashicorp/consul/api"
"github.com/unistack-org/micro/v3/config"
"github.com/unistack-org/micro/v3/util/jitter"
rutil "github.com/unistack-org/micro/v3/util/reflect"
)
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)
}
}
if len(dstmp) > 0 {
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
}