minikv 2.0.1

Distributed key-value and object store with Raft-replicated metadata, two-phase commit to volume servers, and write-ahead logs.
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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188

//! The admin and query endpoints report what happened: unreadable values are
//! listed instead of skipped, status answers hold no invented fields, and the
//! coordinator's own files stay in its data directory.

mod support;

use reqwest::StatusCode;
use serde_json::{json, Value};
use std::fs;
use support::{json, Cluster};

async fn post_json(cluster: &Cluster, path: &str, body: Value) -> reqwest::Response {
    cluster
        .client
        .post(cluster.url(path))
        .header("content-type", "application/json")
        .body(body.to_string())
        .send()
        .await
        .unwrap()
}

async fn search(cluster: &Cluster, query: &str) -> reqwest::Response {
    cluster
        .client
        .get(cluster.url("/search"))
        .query(&[("value", query)])
        .send()
        .await
        .unwrap()
}

#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
async fn export_and_search_report_the_values_they_cannot_read() {
    let mut cluster = Cluster::start(1);
    cluster.wait_ready(1).await;
    let values: [(&str, &[u8]); 2] = [
        ("text", b"alpha"),
        // Not UTF-8, and still searchable byte for byte.
        ("binary", &[0xff, 0xfe, b'b', b'e', b't', b'a']),
    ];
    for (key, value) in values {
        let response = cluster
            .client
            .put(cluster.url(&format!("/{}", key)))
            .body(value.to_vec())
            .send()
            .await
            .unwrap();
        assert_eq!(response.status(), StatusCode::OK);
    }

    let found = json(search(&cluster, "beta").await).await;
    assert_eq!(found["matching_keys"], json!(["binary"]));
    assert_eq!(found["unreadable"], json!([]));

    // With the only volume down, no value can be read.
    cluster.volumes[0].stop();

    let response = search(&cluster, "alpha").await;
    assert_eq!(response.status(), StatusCode::OK);
    let found = json(response).await;
    assert_eq!(found["matching_keys"], json!([]));
    let unreadable: Vec<&str> = found["unreadable"]
        .as_array()
        .unwrap()
        .iter()
        .map(|entry| entry["key"].as_str().unwrap())
        .collect();
    assert_eq!(unreadable, ["binary", "text"]);

    let export = cluster
        .client
        .get(cluster.url("/admin/export"))
        .send()
        .await
        .unwrap()
        .text()
        .await
        .unwrap();
    let lines: Vec<Value> = export
        .lines()
        .map(|line| serde_json::from_str(line).unwrap())
        .collect();
    assert_eq!(lines.len(), 2, "{}", export);
    for line in &lines {
        assert!(line["error"].is_string(), "{}", line);
        assert!(line.get("value").is_none(), "{}", line);
    }
}

#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
async fn the_vector_index_and_the_audit_log_live_in_the_data_directory() {
    let cluster = Cluster::start(0);
    cluster.wait_ready(0).await;
    let dir = cluster.dir.path();
    // The coordinator runs in `dir`, with `--db dir/coord`. A 2.0.0
    // coordinator started there kept its vector index in `dir/coord-data`.
    fs::create_dir(dir.join("coord-data")).unwrap();
    fs::write(
        dir.join("coord-data/vector_index.json"),
        r#"{"old":{"id":"old","values":[1.0,0.0],"metadata":null,"updated_at":0}}"#,
    )
    .unwrap();

    let stats = json(
        cluster
            .client
            .get(cluster.url("/admin/vector/stats"))
            .send()
            .await
            .unwrap(),
    )
    .await;
    assert_eq!(stats["vectors"], 1, "the old index is loaded: {}", stats);
    let index = dir.join("coord").join("vector_index.json");
    assert_eq!(stats["path"], index.display().to_string());

    let response = post_json(
        &cluster,
        "/vector/upsert",
        json!({ "id": "new", "values": [0.0, 1.0] }),
    )
    .await;
    assert_eq!(response.status(), StatusCode::OK);
    let saved: Value = serde_json::from_str(&fs::read_to_string(&index).unwrap()).unwrap();
    let mut ids: Vec<&String> = saved.as_object().unwrap().keys().collect();
    ids.sort();
    assert_eq!(ids, ["new", "old"]);

    let response = post_json(
        &cluster,
        "/admin/keys",
        json!({ "name": "ops-key", "role": "admin" }),
    )
    .await;
    assert_eq!(response.status(), StatusCode::CREATED);
    let audit = fs::read_to_string(dir.join("coord").join("audit.log")).unwrap();
    let entry: Value = serde_json::from_str(audit.lines().last().unwrap()).unwrap();
    assert_eq!(entry["actor"], "unauthenticated", "{}", entry);
    assert!(!dir.join("audit.log").exists());
}

#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
async fn status_answers_list_only_what_exists() {
    let cluster = Cluster::start(0);
    cluster.wait_ready(0).await;
    let get = |path: &'static str| {
        let request = cluster.client.get(cluster.url(path));
        async move { json(request.send().await.unwrap()).await }
    };

    // Every resolution and aggregation listed is accepted by /ts/query.
    let stats = get("/admin/timeseries/stats").await;
    assert_eq!(stats["compression"], json!(["delta"]));
    assert!(stats["stats"].get("retention_days").is_none(), "{}", stats);
    for resolution in stats["resolutions"].as_array().unwrap() {
        for aggregation in stats["aggregations"].as_array().unwrap() {
            let response = cluster
                .client
                .get(cluster.url("/ts/query"))
                .query(&[
                    ("metric", "cpu"),
                    ("resolution", resolution.as_str().unwrap()),
                    ("aggregation", aggregation.as_str().unwrap()),
                ])
                .send()
                .await
                .unwrap();
            assert_eq!(
                response.status(),
                StatusCode::OK,
                "{} {}",
                resolution,
                aggregation
            );
        }
    }

    assert_eq!(
        get("/admin/geo/status").await,
        json!({ "enabled": false, "local_region": null, "remote_regions": [] })
    );
    assert_eq!(
        get("/admin/cdc/status").await,
        json!({ "enabled": false, "message": "CDC not configured" })
    );
}