saya-cli 0.2.0

Database-aware AI agent for the terminal: full-screen TUI, schema discovery, and bounded read-only SQL over PostgreSQL, MySQL, DuckDB, and Snowflake.
Documentation 
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 saya_types::DatabaseProfile;
use sha2::{Digest, Sha256};
use std::path::Path;

pub(crate) fn profile_identity(name: &str, profile: &DatabaseProfile, scope: &Path) -> String {
    let mut hash = Sha256::new();
    field(&mut hash, name);
    field_bytes(&mut hash, scope.as_os_str().as_encoded_bytes());
    match profile {
        DatabaseProfile::Postgres {
            host,
            port,
            database,
            user,
            ssl_mode,
            ..
        } => fields(
            &mut hash,
            [
                "postgres",
                host,
                database,
                user,
                &format!("{port:?}"),
                &format!("{ssl_mode:?}"),
            ],
        ),
        DatabaseProfile::Mysql {
            host,
            port,
            database,
            user,
            ssl_mode,
            ssl_ca,
            ..
        } => fields(
            &mut hash,
            [
                "mysql",
                host,
                database,
                user,
                &format!("{port:?}"),
                &format!("{ssl_mode:?}"),
                &format!("{}", ssl_ca.is_some()),
            ],
        ),
        DatabaseProfile::DuckDb { path, read_only } => {
            fields(&mut hash, ["duckdb", path, &format!("{read_only:?}")]);
        }
        DatabaseProfile::Snowflake {
            account,
            user,
            auth_type,
            warehouse,
            database,
            schema,
            role,
            ..
        } => fields(
            &mut hash,
            [
                "snowflake",
                account,
                user,
                &format!("{auth_type:?}"),
                &format!("{warehouse:?}"),
                &format!("{database:?}"),
                &format!("{schema:?}"),
                &format!("{role:?}"),
            ],
        ),
    }
    let digest = hash.finalize();
    let mut value = String::from("p-");
    for byte in digest {
        value.push_str(&format!("{byte:02x}"));
    }
    value
}

fn fields<'a>(hash: &mut Sha256, values: impl IntoIterator<Item = &'a str>) {
    for value in values {
        field(hash, value);
    }
}

fn field(hash: &mut Sha256, value: &str) {
    field_bytes(hash, value.as_bytes());
}

fn field_bytes(hash: &mut Sha256, value: &[u8]) {
    hash.update((value.len() as u64).to_be_bytes());
    hash.update(value);
}

#[cfg(test)]
mod tests {
    use saya_store::{SchemaStore, SqliteStateStore};
    use saya_types::DatabaseProfile;
    use std::path::Path;

    #[test]
    fn identity_is_stable_and_opaque() {
        let value = super::profile_identity(
            "quoted profile / password",
            &profile("one.duckdb"),
            Path::new("/project-one/connections.toml"),
        );
        assert_eq!(value.len(), 66);
        assert!(!value.contains("password"));
    }

    #[tokio::test]
    async fn same_relative_profile_in_different_scopes_cannot_share_a_schema_fallback() {
        let profile = profile("./data.duckdb");
        let first = super::profile_identity(
            "analytics",
            &profile,
            Path::new("/project-one/connections.toml"),
        );
        let second = super::profile_identity(
            "analytics",
            &profile,
            Path::new("/project-two/connections.toml"),
        );
        assert_ne!(first, second);
        let root = std::env::temp_dir().join(format!("saya-identity-{}", std::process::id()));
        let _ = std::fs::remove_dir_all(&root);
        let store = SqliteStateStore::new(root.join("state.sqlite3"));
        store
            .upsert_schema(&first, &saya_types::SchemaTree::default())
            .await
            .unwrap();
        assert!(store.get_schema(&second).await.unwrap().is_none());
        let _ = std::fs::remove_dir_all(root);
    }

    fn profile(path: &str) -> DatabaseProfile {
        DatabaseProfile::DuckDb {
            path: path.into(),
            read_only: Some(true),
        }
    }
}