mirror of https://github.com/dapr/go-sdk.git
72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
package main
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import (
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"context"
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"fmt"
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"strconv"
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"sync"
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"time"
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dapr "github.com/dapr/go-sdk/client"
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"github.com/go-redis/redis/v8"
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"google.golang.org/grpc/metadata"
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)
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func addItems(wg *sync.WaitGroup) {
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opts := &redis.Options{
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Addr: "127.0.0.1:6379",
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}
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client := redis.NewClient(opts)
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// set config value
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client.Set(context.Background(), "mykey", "myConfigValue", -1)
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ticker := time.NewTicker(time.Second)
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wg.Add(3 * 5)
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go func() {
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for i := 0; i < 5; i++ {
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<-ticker.C
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client.Set(context.Background(), "mySubscribeKey1", "mySubscribeValue"+strconv.Itoa(i+1), -1)
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client.Set(context.Background(), "mySubscribeKey2", "mySubscribeValue"+strconv.Itoa(i+1), -1)
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client.Set(context.Background(), "mySubscribeKey3", "mySubscribeValue"+strconv.Itoa(i+1), -1)
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}
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ticker.Stop()
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}()
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}
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func main() {
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var wg sync.WaitGroup
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addItems(&wg)
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ctx := context.Background()
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client, err := dapr.NewClient()
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if err != nil {
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panic(err)
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}
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items, err := client.GetConfigurationItem(ctx, "example-config", "mykey")
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if err != nil {
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panic(err)
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}
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fmt.Printf("got config key = mykey, value = %s \n", (*items).Value)
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ctx, f := context.WithTimeout(ctx, 60*time.Second)
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md := metadata.Pairs("dapr-app-id", "configuration-api")
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ctx = metadata.NewOutgoingContext(ctx, md)
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defer f()
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subscribeID, err := client.SubscribeConfigurationItems(ctx, "example-config", []string{"mySubscribeKey1", "mySubscribeKey2", "mySubscribeKey3"}, func(id string, items map[string]*dapr.ConfigurationItem) {
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wg.Done()
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for k, v := range items {
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fmt.Printf("got config key = %s, value = %s \n", k, v.Value)
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}
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})
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if err != nil {
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panic(err)
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}
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wg.Wait()
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// dapr configuration unsubscribe called.
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if err := client.UnsubscribeConfigurationItems(ctx, "example-config", subscribeID); err != nil {
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panic(err)
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}
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fmt.Println("dapr configuration unsubscribed")
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time.Sleep(time.Second)
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}
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