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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
use std::sync::Arc;
use async_trait::async_trait;
use futures::future::Future;
use http::header::{
ACCESS_CONTROL_ALLOW_METHODS, ACCESS_CONTROL_ALLOW_ORIGIN, ALLOW, CONTENT_TYPE,
};
use hyper::{Body, Request, Response};
use opentelemetry::trace::{SpanRef, Tracer};
use opentelemetry_prometheus::PrometheusExporter;
use prometheus::{Encoder, TextEncoder};
use garage_model::garage::Garage;
use garage_util::error::Error as GarageError;
use crate::error::*;
use crate::generic_server::*;
use crate::admin::cluster::*;
use crate::admin::router::{Authorization, Endpoint};
pub struct AdminApiServer {
garage: Arc<Garage>,
exporter: PrometheusExporter,
metrics_token: Option<String>,
admin_token: Option<String>,
}
impl AdminApiServer {
pub fn new(garage: Arc<Garage>) -> Self {
let exporter = opentelemetry_prometheus::exporter().init();
let cfg = &garage.config.admin;
let metrics_token = cfg
.metrics_token
.as_ref()
.map(|tok| format!("Bearer {}", tok));
let admin_token = cfg
.admin_token
.as_ref()
.map(|tok| format!("Bearer {}", tok));
Self {
garage,
exporter,
metrics_token,
admin_token,
}
}
pub async fn run(self, shutdown_signal: impl Future<Output = ()>) -> Result<(), GarageError> {
if let Some(bind_addr) = self.garage.config.admin.api_bind_addr {
let region = self.garage.config.s3_api.s3_region.clone();
ApiServer::new(region, self)
.run_server(bind_addr, shutdown_signal)
.await
} else {
Ok(())
}
}
fn handle_options(&self, _req: &Request<Body>) -> Result<Response<Body>, Error> {
Ok(Response::builder()
.status(204)
.header(ALLOW, "OPTIONS, GET, POST")
.header(ACCESS_CONTROL_ALLOW_METHODS, "OPTIONS, GET, POST")
.header(ACCESS_CONTROL_ALLOW_ORIGIN, "*")
.body(Body::empty())?)
}
fn handle_metrics(&self) -> Result<Response<Body>, Error> {
let mut buffer = vec![];
let encoder = TextEncoder::new();
let tracer = opentelemetry::global::tracer("garage");
let metric_families = tracer.in_span("admin/gather_metrics", |_| {
self.exporter.registry().gather()
});
encoder
.encode(&metric_families, &mut buffer)
.ok_or_internal_error("Could not serialize metrics")?;
Ok(Response::builder()
.status(200)
.header(CONTENT_TYPE, encoder.format_type())
.body(Body::from(buffer))?)
}
}
#[async_trait]
impl ApiHandler for AdminApiServer {
const API_NAME: &'static str = "admin";
const API_NAME_DISPLAY: &'static str = "Admin";
type Endpoint = Endpoint;
fn parse_endpoint(&self, req: &Request<Body>) -> Result<Endpoint, Error> {
Endpoint::from_request(req)
}
async fn handle(
&self,
req: Request<Body>,
endpoint: Endpoint,
) -> Result<Response<Body>, Error> {
let expected_auth_header = match endpoint.authorization_type() {
Authorization::MetricsToken => self.metrics_token.as_ref(),
Authorization::AdminToken => self.admin_token.as_ref(),
};
if let Some(h) = expected_auth_header {
match req.headers().get("Authorization") {
None => Err(Error::Forbidden(
"Authorization token must be provided".into(),
)),
Some(v) if v.to_str().map(|hv| hv == h).unwrap_or(false) => Ok(()),
_ => Err(Error::Forbidden(
"Invalid authorization token provided".into(),
)),
}?;
}
match endpoint {
Endpoint::Options => self.handle_options(&req),
Endpoint::Metrics => self.handle_metrics(),
Endpoint::GetClusterStatus => handle_get_cluster_status(&self.garage).await,
Endpoint::GetClusterLayout => handle_get_cluster_layout(&self.garage).await,
Endpoint::UpdateClusterLayout => handle_update_cluster_layout(&self.garage, req).await,
Endpoint::ApplyClusterLayout => handle_apply_cluster_layout(&self.garage, req).await,
Endpoint::RevertClusterLayout => handle_revert_cluster_layout(&self.garage, req).await,
/*
_ => Err(Error::NotImplemented(format!(
"Admin endpoint {} not implemented yet",
endpoint.name()
))),
*/
}
}
}
impl ApiEndpoint for Endpoint {
fn name(&self) -> &'static str {
Endpoint::name(self)
}
fn add_span_attributes(&self, _span: SpanRef<'_>) {}
}
|
