eggress-runtime 1.0.3

Service supervisor and composition layer for eggress
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

use std::io::Write;
use std::sync::atomic::Ordering;

use tempfile::NamedTempFile;

fn write_config(content: &str) -> NamedTempFile {
    let mut f = NamedTempFile::new().unwrap();
    f.write_all(content.as_bytes()).unwrap();
    f.flush().unwrap();
    f
}

#[test]
fn full_toml_config_starts_service() {
    let config = r#"
version = 1

[[listeners]]
name = "http-in"
bind = "127.0.0.1:0"
protocols = ["http"]
"#;
    let f = write_config(config);
    let path = f.path().to_str().unwrap();
    let result = eggress_runtime::ServiceSupervisor::start(path);
    assert!(result.is_ok(), "expected Ok, got {:?}", result.err());
}

#[test]
fn readiness_starts_false_before_run() {
    let config = r#"
version = 1

[[listeners]]
name = "http-in"
bind = "127.0.0.1:0"
protocols = ["http"]
"#;
    let f = write_config(config);
    let path = f.path().to_str().unwrap();
    let sup = eggress_runtime::ServiceSupervisor::start(path).unwrap();
    assert!(
        !sup.state().readiness.load(Ordering::Relaxed),
        "readiness should be false before run()"
    );
}

#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
async fn bind_conflict_aborts_startup_before_readiness() {
    let held = std::net::TcpListener::bind("127.0.0.1:0").unwrap();
    let addr = held.local_addr().unwrap();
    let bind_addr = addr.to_string();

    let config = format!(
        r#"
version = 1

[[listeners]]
name = "conflict"
bind = "{bind_addr}"
protocols = ["http"]
"#,
    );

    let f = write_config(&config);
    let path = f.path().to_str().unwrap().to_string();

    let mut supervisor = eggress_runtime::ServiceSupervisor::start(&path).unwrap();
    let state = supervisor.state().clone();

    let result = tokio::task::spawn_blocking(move || supervisor.run())
        .await
        .expect("spawn_blocking failed");

    assert!(
        matches!(
            result,
            Err(eggress_runtime::RuntimeError::ListenerBind { .. })
        ),
        "expected ListenerBind error, got {result:?}"
    );
    assert!(
        !state.readiness.load(Ordering::Relaxed),
        "readiness should remain false when bind fails"
    );

    drop(held);
}

#[test]
fn runtime_state_has_expected_generation() {
    let config = r#"
version = 1

[[listeners]]
name = "http-in"
bind = "127.0.0.1:0"
protocols = ["http"]
"#;
    let f = write_config(config);
    let path = f.path().to_str().unwrap();
    let sup = eggress_runtime::ServiceSupervisor::start(path).unwrap();
    assert_eq!(sup.state().generation(), 0, "generation should start at 0");
}

#[test]
fn runtime_state_has_metrics_registry() {
    let config = r#"
version = 1

[[listeners]]
name = "http-in"
bind = "127.0.0.1:0"
protocols = ["http"]
"#;
    let f = write_config(config);
    let path = f.path().to_str().unwrap();
    let sup = eggress_runtime::ServiceSupervisor::start(path).unwrap();
    let metrics = sup.state().metrics.clone();
    let rendered = metrics.render_prometheus();
    assert!(
        rendered.contains("eggress_connections_active"),
        "metrics should contain connections_active"
    );
}

#[test]
fn runtime_state_has_active_connections_zero() {
    let config = r#"
version = 1

[[listeners]]
name = "http-in"
bind = "127.0.0.1:0"
protocols = ["http"]
"#;
    let f = write_config(config);
    let path = f.path().to_str().unwrap();
    let sup = eggress_runtime::ServiceSupervisor::start(path).unwrap();
    assert_eq!(
        sup.state().active_connections.load(Ordering::Relaxed),
        0,
        "active connections should start at 0"
    );
}