| commit | d39558319a259709643f3ee8727eed325901dc9d | [log] [tgz] |
|---|---|---|
| author | xiaolong ran <rxl@apache.org> | Mon Jul 12 15:49:18 2021 +0800 |
| committer | GitHub <noreply@github.com> | Mon Jul 12 15:49:18 2021 +0800 |
| tree | 601252cbcbf2f10aceeae1729c9dd033e53a0469 | |
| parent | 9d864c224e0943cf1cba95ec3f967211edc4f0cb [diff] |
Fix default connection timeout (#563) Signed-off-by: xiaolongran <xiaolongran@tencent.com> ### Motivation In Java SDK, the default connection timeout is **10** sec ``` private int connectionTimeoutMs = 10000; ``` The problem here is that when the load of the broker is high, there is no way to complete the processing and creation of the connection within 5s, which will cause the client to constantly create new connections and try to establish a connection with the broker, and the broker Continuously disconnecting from the client, forming a vicious circle ### Modifications Replace 5 sec of connection timeout with `10` sec
A Go client library for the Apache Pulsar project.
This projects is developing a pure-Go client library for Pulsar that does not depend on the C++ Pulsar library.
Once feature parity and stability are reached, this will supersede the current CGo based library.
Check the Projects page at https://github.com/apache/pulsar-client-go/projects for tracking the status and the progress.
Import the client library:
import "github.com/apache/pulsar-client-go/pulsar"
Create a Producer:
client, err := pulsar.NewClient(pulsar.ClientOptions{
URL: "pulsar://localhost:6650",
})
defer client.Close()
producer, err := client.CreateProducer(pulsar.ProducerOptions{
Topic: "my-topic",
})
_, err = producer.Send(context.Background(), &pulsar.ProducerMessage{
Payload: []byte("hello"),
})
defer producer.Close()
if err != nil {
fmt.Println("Failed to publish message", err)
}
fmt.Println("Published message")
Create a Consumer:
client, err := pulsar.NewClient(pulsar.ClientOptions{
URL: "pulsar://localhost:6650",
})
defer client.Close()
consumer, err := client.Subscribe(pulsar.ConsumerOptions{
Topic: "my-topic",
SubscriptionName: "my-sub",
Type: pulsar.Shared,
})
defer consumer.Close()
msg, err := consumer.Receive(context.Background())
if err != nil {
log.Fatal(err)
}
fmt.Printf("Received message msgId: %#v -- content: '%s'\n",
msg.ID(), string(msg.Payload()))
Create a Reader:
client, err := pulsar.NewClient(pulsar.ClientOptions{URL: "pulsar://localhost:6650"})
if err != nil {
log.Fatal(err)
}
defer client.Close()
reader, err := client.CreateReader(pulsar.ReaderOptions{
Topic: "topic-1",
StartMessageID: pulsar.EarliestMessageID(),
})
if err != nil {
log.Fatal(err)
}
defer reader.Close()
for reader.HasNext() {
msg, err := reader.Next(context.Background())
if err != nil {
log.Fatal(err)
}
fmt.Printf("Received message msgId: %#v -- content: '%s'\n",
msg.ID(), string(msg.Payload()))
}
Contributions are welcomed and greatly appreciated. See CONTRIBUTING.md for details on submitting patches and the contribution workflow.
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Licensed under the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0