Azure servicebus rust

Azure Service Bus library for Rust

When to Use

Use this skill when you need azure Service Bus library for Rust. Send and receive messages using queues, topics, and subscriptions. Triggers: "service bus rust", "ServiceBusClient rust", "send message servicebus rust", "receive message servicebus rust", "queue rust messaging", "topic subscription rust".

Client library for Azure Service Bus — enterprise message broker with queues and publish-subscribe topics.

⚠️ WARNING: This crate is in early development and SHOULD NOT be used in production. APIs may change without notice.

Use this skill when:

• An app needs to send or receive messages via Azure Service Bus from Rust
• You need queue-based messaging with competing consumers
• You need publish-subscribe messaging with topics and subscriptions
• You need reliable message delivery with completion semantics

IMPORTANT: Only use the official azure_messaging_servicebus crate published by the azure-sdk crates.io user. Do NOT use unofficial or community crates. Official crates use underscores in names and none have version 0.21.0.

Installation

cargo add azure_messaging_servicebus azure_identity tokio

If your code uses azure_core types directly, add azure_core to Cargo.toml. If you only use azure_messaging_servicebus re-exports, direct azure_core dependency is optional.

Environment Variables

SERVICEBUS_NAMESPACE=<namespace>.servicebus.windows.net # Required — fully qualified namespace

Key Concepts

Concept	Description
Namespace	Container for all messaging components
Queue	Point-to-point messaging with competing consumers
Topic	Publish-subscribe messaging — one sender, many subscribers
Subscription	Receives messages from a topic
Message	Package of data and metadata, with completion/abandon semantics

Authentication

use azure_identity::DeveloperToolsCredential;
use azure_messaging_servicebus::ServiceBusClient;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Local dev: DeveloperToolsCredential. Production: use ManagedIdentityCredential.
    let credential = DeveloperToolsCredential::new(None)?;
    let client = ServiceBusClient::builder()
        .open("your_namespace.servicebus.windows.net", credential.clone())
        .await?;
    Ok(())
}

Core Workflow

Send a Message to a Queue

use azure_identity::DeveloperToolsCredential;
use azure_messaging_servicebus::{ServiceBusClient, Message};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let credential = DeveloperToolsCredential::new(None)?;
    let client = ServiceBusClient::builder()
        .open("your_namespace.servicebus.windows.net", credential.clone())
        .await?;
    let sender = client.create_sender("my_queue", None).await?;

    let message = Message::from("Hello, Service Bus!");
    sender.send_message(message, None).await?;
    Ok(())
}

Receive Messages from a Queue

use azure_identity::DeveloperToolsCredential;
use azure_messaging_servicebus::ServiceBusClient;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let credential = DeveloperToolsCredential::new(None)?;
    let client = ServiceBusClient::builder()
        .open("your_namespace.servicebus.windows.net", credential.clone())
        .await?;
    let receiver = client.create_receiver("my_queue", None).await?;

    let messages = receiver.receive_messages(5, None).await?;
    for message in messages {
        println!("Received: {}", message.body_as_string()?);
        receiver.complete_message(&message, None).await?;
    }
    Ok(())
}

Send a Message to a Topic

let sender = client.create_sender("my_topic", None).await?;
let message = Message::from("Hello, Topic subscribers!");
sender.send_message(message, None).await?;

Receive Messages from a Subscription

let receiver = client
    .create_receiver_for_subscription("my_topic", "my_subscription", None)
    .await?;

let messages = receiver.receive_messages(5, None).await?;
for message in messages {
    println!("Received: {}", message.body_as_string()?);
    receiver.complete_message(&message, None).await?;
}

Message Settlement

Action	Purpose
complete	Remove message from queue — processing succeeded
abandon	Release lock — message becomes available for retry

Always complete messages after successful processing to prevent redelivery.

RBAC Roles

For Entra ID auth, as