1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
use std::collections::HashMap;
use std::net::{IpAddr, SocketAddr};
use hyper::client::Client;
use hyper::StatusCode;
use hyper::{Body, Method, Request};
use serde::Deserialize;
use netapp::NodeID;
use garage_util::error::Error;
#[derive(Deserialize, Clone, Debug)]
struct ConsulEntry {
#[serde(alias = "Address")]
address: String,
#[serde(alias = "ServicePort")]
service_port: u16,
#[serde(alias = "NodeMeta")]
node_meta: HashMap<String, String>,
}
pub async fn get_consul_nodes(
consul_host: &str,
consul_service_name: &str,
) -> Result<Vec<(NodeID, 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>().ok();
let pubkey = ent
.node_meta
.get("pubkey")
.map(|k| hex::decode(&k).ok())
.flatten()
.map(|k| NodeID::from_slice(&k[..]))
.flatten();
if let (Some(ip), Some(pubkey)) = (ip, pubkey) {
ret.push((pubkey, SocketAddr::new(ip, ent.service_port)));
} else {
warn!(
"Could not process node spec from Consul: {:?} (invalid IP or public key)",
ent
);
}
}
debug!("Got nodes from Consul: {:?}", ret);
Ok(ret)
}
|
