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use std::net::{IpAddr, SocketAddr};
use hyper::client::Client;
use hyper::StatusCode;
use hyper::{Body, Method, Request};
use serde::Deserialize;
use garage_util::error::Error;
#[derive(Deserialize, Clone)]
struct ConsulEntry {
#[serde(alias = "Address")]
address: String,
#[serde(alias = "ServicePort")]
service_port: u16,
}
pub async fn get_consul_nodes(
consul_host: &str,
consul_service_name: &str,
) -> Result<Vec<SocketAddr>, Error> {
let url = format!(
"http://{}/v1/catalog/service/{}",
consul_host, consul_service_name
);
let req = Request::builder()
.uri(url)
.method(Method::GET)
.body(Body::default())?;
let client = Client::new();
let resp = client.request(req).await?;
if resp.status() != StatusCode::OK {
return Err(Error::Message(format!("HTTP error {}", resp.status())));
}
let body = hyper::body::to_bytes(resp.into_body()).await?;
let entries = serde_json::from_slice::<Vec<ConsulEntry>>(body.as_ref())?;
let mut ret = vec![];
for ent in entries {
let ip = ent
.address
.parse::<IpAddr>()
.map_err(|e| Error::Message(format!("Could not parse IP address: {}", e)))?;
ret.push(SocketAddr::new(ip, ent.service_port));
}
debug!("Got nodes from Consul: {:?}", ret);
Ok(ret)
}
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