gramps
e8fdb39ea2
- Flat src/amqp.rs, src/mongo.rs, src/mariadb.rs promoted to src/services/{amqp,mongo,mariadb}/
- services/amqp/connection.rs: AmqpConnection struct with connect() and declare_exchange()
- services/amqp/error.rs: AmqpError type (thiserror, wraps lapin::Error)
- ipl() made async; #[tokio::main] added to main()
- IPL step 3b: authenticate to RabbitMQ + declare beds.events topic exchange (durable)
- Added lapin = "2" and tokio = { version = "1", features = ["full"] } to Cargo.toml
- 12 unit tests pass
- Docs: README, CLAUDE.md, wiki/04-ipl.md, wiki/06-queue-topology.md updated
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
87 lines
2.7 KiB
Rust
87 lines
2.7 KiB
Rust
//! # services/amqp/mod.rs — AMQP Transport Module
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//!
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//! RabbitMQ transport layer. Provides IPL reachability validation and the
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//! `AmqpConnection` struct for authenticated broker sessions.
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//!
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//! ## Public Surface
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//! - `validate()` — TCP reachability check (IPL step 3)
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//! - `AmqpConnection` — authenticated connection + channel (IPL step 3b)
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//! - `EXCHANGE_NAME` — the canonical `beds.events` exchange name constant
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//!
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//! **Author:** mks
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//! **Version:** 1.0
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//!
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//! ## History
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//! * `2026-04-02` - mks - original coding (flat amqp.rs)
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//! * `2026-04-04` - mks - promoted to services/amqp/, added AmqpConnection struct
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pub mod connection;
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pub mod error;
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pub use connection::{AmqpConnection, EXCHANGE_NAME};
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pub use error::AmqpError; // will be used by broker pool error handling
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use std::net::TcpStream;
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use std::time::Duration;
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use crate::config::BrokerServicesConfig;
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/// Validates that the RabbitMQ broker is reachable via TCP.
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///
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/// Opens a TCP connection to the configured broker host and port. Does not
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/// authenticate or open an AMQP channel — reachability only. The connection
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/// is closed immediately after a successful connect.
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///
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/// Called at IPL step 3 as a fast pre-flight check before the more expensive
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/// `AmqpConnection::connect()` authentication step.
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///
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/// # Arguments
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///
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/// * `cfg` — broker services configuration block from `BedsConfig`
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///
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/// # Returns
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///
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/// `Ok(())` if the TCP handshake succeeds within 5 seconds.
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/// `Err(String)` with a descriptive message if the broker cannot be reached.
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///
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/// # History
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///
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/// * `2026-04-02` - mks - original coding
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pub fn validate(cfg: &BrokerServicesConfig) -> Result<(), String> {
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let addr_str = format!("{}:{}", cfg.app_server.host, cfg.app_server.port);
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let addr: std::net::SocketAddr = addr_str
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.parse()
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.map_err(|e| format!("Invalid broker address {}: {}", addr_str, e))?;
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TcpStream::connect_timeout(&addr, Duration::from_secs(5))
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.map_err(|e| format!("RabbitMQ unreachable at {}: {}", addr_str, e))?;
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Ok(())
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::config::load_from;
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fn test_cfg() -> crate::config::BedsConfig {
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load_from("tests/fixtures/beds_test.toml", "")
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.expect("test fixture beds_test.toml failed to load")
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}
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#[test]
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fn validate_err_on_closed_port() {
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let mut cfg = test_cfg();
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cfg.broker_services.app_server.port = 1;
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assert!(validate(&cfg.broker_services).is_err());
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}
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#[test]
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fn validate_err_on_bad_address() {
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let mut cfg = test_cfg();
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cfg.broker_services.app_server.host = "not_a_valid_host!!!".to_string();
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assert!(validate(&cfg.broker_services).is_err());
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}
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}
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