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app.go
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app.go
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// ------------------------------------------------------------
// Copyright (c) Microsoft Corporation and Dapr Contributors.
// Licensed under the MIT License.
// ------------------------------------------------------------
package main
import (
"bytes"
"encoding/json"
"fmt"
"log"
"net/http"
"os"
"time"
)
const (
daprPort = 3500
pubsubName = "messagebus"
pubsubTopic = "pubsub-job-topic-http"
message = "message-from-job"
publishRetries = 10
)
func stopSidecar() {
log.Printf("Shutting down the sidecar at %s", fmt.Sprintf("http://localhost:%d/v1.0/shutdown", daprPort))
for retryCount := 0; retryCount < 200; retryCount++ {
r, err := http.Post(fmt.Sprintf("http://localhost:%d/v1.0/shutdown", daprPort), "", bytes.NewBuffer([]byte{}))
if r != nil {
r.Body.Close()
}
if err != nil {
log.Printf("Error stopping the sidecar %s", err)
}
if r.StatusCode != 200 && r.StatusCode != 204 {
log.Printf("Received Non-200 from shutdown API. Code: %d", r.StatusCode)
time.Sleep(10 * time.Second)
continue
}
break
}
log.Printf("Sidecar stopped")
}
func publishMessagesToPubsub() error {
daprPubsubURL := fmt.Sprintf("http://localhost:%d/v1.0/publish/%s/%s", daprPort, pubsubName, pubsubTopic)
jsonValue, err := json.Marshal(message)
if err != nil {
log.Printf("Error marshalling %s to JSON", message)
}
log.Printf("Publishing to %s", daprPubsubURL)
// nolint: gosec
r, err := http.Post(daprPubsubURL, "application/json", bytes.NewBuffer(jsonValue))
if r != nil {
defer r.Body.Close()
}
if err != nil {
log.Printf("Error publishing messages to pubsub: %+v", err)
}
return err
}
func main() {
for retryCount := 0; retryCount < publishRetries; retryCount++ {
err := publishMessagesToPubsub()
if err != nil {
log.Printf("Unable to publish, retrying.")
time.Sleep(10 * time.Second)
} else {
// Wait for a minute before shutting down to give time for any validation by E2E test code.
time.Sleep(1 * time.Minute)
stopSidecar()
os.Exit(0)
}
}
stopSidecar()
os.Exit(1)
}