messaging_eventhubs

An unofficial and experimental Azure Event Hubs client library for Rust.

This crate follows a similar structure to that of the Azure SDK for .Net, and thus it should be familiar to anyone who has used the dotnet SDK. This crate is still in development, and not all features are implemented yet.

Examples

Event Hub Producer Example

```rust use messaging_eventhubs::producer::{ EventHubProducerClient, EventHubProducerClientOptions, SendEventOptions, };

[tokio::main]

async fn main() -> Result<(), Box> { let mut producerclient = EventHubProducerClient::fromconnectionstring( "", // Replace with your connection string "".tostring(), // Replace with your hub name EventHubProducerClientOptions::default() ).await?;

let partition_ids = producer_client.get_partition_ids().await?;

let event = "Hello, world to first partition!";
let options = SendEventOptions::new().with_partition_id(&partition_ids[0]);
producer_client.send_event(event, options).await?;

producer_client.close().await?;

Ok(())

} ```

Event Hub Consumer Example

```rust use futuresutil::StreamExt; use messagingeventhubs::consumer::{EventHubConsumerClient, EventHubConsumerClientOptions, EventPosition, ReadEventOptions};

[tokio::main]

async fn main() -> Result<(), Box> { // Create a consumer client let mut consumerclient = EventHubConsumerClient::fromconnectionstring( EventHubConsumerClient::DEFAULTCONSUMERGROUPNAME, "", // Replace with your connection string "".to_string(), // Replace with your hub name EventHubConsumerClientOptions::default(), ).await?;

let partition_ids = consumer_client.get_partition_ids().await?;
let starting_position = EventPosition::earliest();
let options = ReadEventOptions::default();

// Get a stream of events from the first partition
let mut stream = consumer_client
    .read_events_from_partition(&partition_ids[0], starting_position, options)
    .await?;

// Receive 30 events
let mut counter = 0;
while let Some(event) = stream.next().await {
    let event = event?;
    let body = event.body()?;
    let value = std::str::from_utf8(body)?;
    log::info!("{:?}", value);

    log::info!("counter: {}", counter);
    counter += 1;
    if counter > 30 {
        break;
    }
}
// Close the stream
stream.close().await?;

// Close the consumer client
consumer_client.close().await?;

Ok(())

} ```

What is implemented and what is not?

| Feature | Supported | | ------- | --------- | | Event Hub Connection | Yes | | Event Hub Producer | Yes | | Event Hub Consumer | Yes | | Partition Receiver | Yes | | Event Hub Buffered Producer | Not yet | | Event Hub Processor | Not yet | | Checkpoint Store | Not yet |

TLS Support

Communication between a client application and an Azure Service Event Hub namespace is encrypted using Transport Layer Security (TLS). The TLS implementation is exposed to the user through the corresponding feature flags (please see the feature flag section below). The user should ensure either the rustls or native-tls feature is enabled, and one and only one TLS implementation must be enabled. Enabling both features is not supported and will result in an error.

The native-tls feature is enabled by default, and it will use the native-tls crate to provide TLS support. The rustls feature will use the rustls crate and webpki-roots crate to provide TLS support.

Feature Flags

This crate supports the following feature flags:

| Feature | Description | | ------- | ----------- | | default | Enables "native-tls" feature | | rustls | Enables the use of the rustls crate for TLS support | | native-tls | Enables the use of the native-tls crate for TLS support |

WebAssembly Support

WebAssembly is NOT supported yet.