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* reviewing sac example * updating README
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,11 @@ | ||
| [workspace] | ||
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| [package] | ||
| name = "single_active_consumer" | ||
| version = "0.1.0" | ||
| edition = "2021" | ||
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| [dependencies] | ||
| futures = "0.3.31" | ||
| tokio = "1.41.1" | ||
| rabbitmq-stream-client = { path = "../../" } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| mod send_super_stream; | ||
| mod single_active_consumer_super_stream; | ||
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| use std::env; | ||
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| static SUPER_STREAM: &str = "invoices"; | ||
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| #[tokio::main] | ||
| async fn main() -> Result<(), Box<dyn std::error::Error>> { | ||
| let mut args = env::args().skip(1); | ||
| while let Some(arg) = args.next() { | ||
| match &arg[..] { | ||
| "-h" | "--help" => help(), | ||
| "--consumer" => { | ||
| let mut consumer_name = String::from(""); | ||
| let next = args.next().take(); | ||
| if next.is_some() { | ||
| println!("is some"); | ||
| consumer_name = next.clone().take().unwrap(); | ||
| } | ||
| println!("Starting SuperStream Consumer {}", consumer_name); | ||
| single_active_consumer_super_stream::start_consumer(consumer_name).await?; | ||
| } | ||
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| "--producer" => { | ||
| println!("Starting SuperStream Producer"); | ||
| send_super_stream::start_producer().await? | ||
| }, | ||
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| arg if arg.starts_with("-") => { | ||
| eprintln!("Unknown argument: {}", arg); | ||
| } | ||
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| _ => { | ||
| eprintln!("Unknown argument: {}", arg); | ||
| help(); | ||
| } | ||
| } | ||
| } | ||
| Ok(()) | ||
| } | ||
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| fn help() { | ||
| println!("--consumer or --producer") | ||
| } |
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116
examples/single_active_consumer/src/send_super_stream.rs
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| Original file line number | Diff line number | Diff line change |
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| use rabbitmq_stream_client::error::StreamCreateError; | ||
| use rabbitmq_stream_client::types::{ | ||
| ByteCapacity, HashRoutingMurmurStrategy, Message, ResponseCode, RoutingStrategy, | ||
| }; | ||
| use std::convert::TryInto; | ||
| use std::sync::atomic::{AtomicU32, Ordering}; | ||
| use std::sync::Arc; | ||
| use tokio::sync::Notify; | ||
| use tokio::time; | ||
|
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| fn hash_strategy_value_extractor(message: &Message) -> String { | ||
| message | ||
| .application_properties() | ||
| .unwrap() | ||
| .get("id") | ||
| .unwrap() | ||
| .clone() | ||
| .try_into() | ||
| .unwrap() | ||
| } | ||
|
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| pub async fn start_producer() -> Result<(), Box<dyn std::error::Error>> { | ||
| use rabbitmq_stream_client::Environment; | ||
| let environment = Environment::builder().build().await?; | ||
| println!("Super Stream Producer connected to RabbitMQ"); | ||
| let confirmed_messages = Arc::new(AtomicU32::new(0)); | ||
| let notify_on_send = Arc::new(Notify::new()); | ||
| let _ = environment | ||
| .stream_creator() | ||
| .max_length(ByteCapacity::GB(5)) | ||
| .create_super_stream(crate::SUPER_STREAM, 3, None) | ||
| .await; | ||
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| let create_response = environment | ||
| .stream_creator() | ||
| .max_length(ByteCapacity::GB(5)) | ||
| .create_super_stream(crate::SUPER_STREAM, 3, None) | ||
| .await; | ||
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| if let Err(e) = create_response { | ||
| if let StreamCreateError::Create { stream, status } = e { | ||
| match status { | ||
| // we can ignore this error because the stream already exists | ||
| ResponseCode::StreamAlreadyExists => {} | ||
| err => { | ||
| println!( | ||
| "[Super Stream Producer] Error creating stream: {:?} {:?}", | ||
| stream, err | ||
| ); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| let super_stream_producer = environment | ||
| .super_stream_producer(RoutingStrategy::HashRoutingStrategy( | ||
| HashRoutingMurmurStrategy { | ||
| routing_extractor: &hash_strategy_value_extractor, | ||
| }, | ||
| )) | ||
| .client_provided_name("rust stream producer - sac example") | ||
| .build(crate::SUPER_STREAM) | ||
| .await; | ||
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| match super_stream_producer { | ||
| Ok(mut producer) => { | ||
| println!("[Super Stream Producer] Successfully created super stream producer"); | ||
| let mut idx = 0; | ||
| loop { | ||
| let counter = confirmed_messages.clone(); | ||
| let notifier = notify_on_send.clone(); | ||
| let msg = Message::builder() | ||
| .body(format!("super stream message_{}", idx)) | ||
| .application_properties() | ||
| .insert("id", idx.to_string()) | ||
| .message_builder() | ||
| .build(); | ||
|
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| let send_result = producer | ||
| .send(msg, move |_| { | ||
| let inner_counter = counter.clone(); | ||
| let inner_notifier = notifier.clone(); | ||
| async move { | ||
| if inner_counter.fetch_add(1, Ordering::Relaxed) == idx - 1 { | ||
| inner_notifier.notify_one(); | ||
| } | ||
| } | ||
| }) | ||
| .await; | ||
|
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| match send_result { | ||
| Ok(_) => { | ||
| idx += 1; | ||
| println!( | ||
| "[Super Stream Producer] Message {} sent to {}", | ||
| idx, | ||
| crate::SUPER_STREAM | ||
| ); | ||
| } | ||
| Err(err) => { | ||
| println!( | ||
| "[Super Stream Producer] Failed to send message. error: {}", | ||
| err | ||
| ); | ||
| } | ||
| } | ||
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| time::sleep(time::Duration::from_millis(1_000)).await; | ||
| } | ||
| } | ||
| Err(err) => { | ||
| println!("Failed to create super stream producer. error {}", err); | ||
| Ok(()) | ||
| } | ||
| } | ||
| } |
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