cloud.google.com/go/pubsub

main.go

package main

// #include <stdlib.h>
import (
	"C"
	"context"
	"encoding/json"
	"fmt"

	"cloud.google.com/go/pubsub"
)

//export gpub
func gpub(msg string) {
	ctx := context.Background()

	// Sets your Google Cloud Platform project ID.
	projectID := "fleet-furnace-197606"

	// Creates a client.
	client, err := pubsub.NewClient(ctx, projectID)
	if err != nil {
		fmt.Printf("Failed to create client: %v", err)
	}
	defer client.Close()

	// Sets the id for the new topic.
	topicID := "okTopic"

	// message := "{'_id':'665ceaade221eb5dc182501d','index':1,'guid':'7177c6c6-babb-4be5-822b-7984c5c3cd93','isActive':true}"
	println("msg:= ", msg)
	message := msg

	data, err := json.Marshal(message)
	if err != nil {
		fmt.Printf("Failed to marshal json")
	}

	fmt.Println(data)
	// Creates the new topic.
	topic := client.Topic(topicID)
	res := topic.Publish(ctx, &pubsub.Message{
		Data: data,
		// Data: []byte("hello world"),
	})

	msgID, err := res.Get(ctx)
	if err != nil {
		fmt.Println(err)
	}

	fmt.Printf("Msg %v created.\n", msgID)
}

func main() {}