nodedb 0.0.0-beta.1

Local-first, real-time, edge-to-cloud hybrid database for multi-modal workloads
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

use pgwire::api::results::{Response, Tag};
use pgwire::error::PgWireResult;

use crate::control::security::audit::AuditEvent;
use crate::control::security::identity::AuthenticatedIdentity;
use crate::control::state::SharedState;

use super::super::types::{require_admin, sqlstate_error};

/// CREATE ROLE <name> [INHERIT <parent>]
pub fn create_role(
    state: &SharedState,
    identity: &AuthenticatedIdentity,
    parts: &[&str],
) -> PgWireResult<Vec<Response>> {
    require_admin(identity, "create roles")?;

    if parts.len() < 3 {
        return Err(sqlstate_error(
            "42601",
            "syntax: CREATE ROLE <name> [INHERIT <parent>]",
        ));
    }

    let name = parts[2];
    let parent = if parts.len() >= 5 && parts[3].eq_ignore_ascii_case("INHERIT") {
        Some(parts[4])
    } else {
        None
    };

    let catalog = state.credentials.catalog();
    state
        .roles
        .create_role(name, identity.tenant_id, parent, catalog.as_ref())
        .map_err(|e| sqlstate_error("42710", &e.to_string()))?;

    state.audit_record(
        AuditEvent::PrivilegeChange,
        Some(identity.tenant_id),
        &identity.username,
        &format!(
            "created role '{name}'{}",
            parent.map_or(String::new(), |p| format!(" inheriting from '{p}'"))
        ),
    );

    Ok(vec![Response::Execution(Tag::new("CREATE ROLE"))])
}

/// ALTER ROLE <name> SET INHERIT <parent>
pub fn alter_role(
    state: &SharedState,
    identity: &AuthenticatedIdentity,
    parts: &[&str],
) -> PgWireResult<Vec<Response>> {
    require_admin(identity, "alter roles")?;

    // ALTER ROLE <name> SET INHERIT <parent>
    if parts.len() < 6 {
        return Err(sqlstate_error(
            "42601",
            "syntax: ALTER ROLE <name> SET INHERIT <parent>",
        ));
    }

    let name = parts[2];
    if !parts[3].eq_ignore_ascii_case("SET") || !parts[4].eq_ignore_ascii_case("INHERIT") {
        return Err(sqlstate_error(
            "42601",
            "expected SET INHERIT after role name",
        ));
    }
    let parent = parts[5];

    // Drop and re-create with new parent (simple approach for immutable-role stores).
    let catalog = state.credentials.catalog();
    let old_role = state
        .roles
        .get_role(name)
        .ok_or_else(|| sqlstate_error("42704", &format!("role '{name}' not found")))?;

    state
        .roles
        .drop_role(name, catalog.as_ref())
        .map_err(|e| sqlstate_error("XX000", &e.to_string()))?;

    state
        .roles
        .create_role(name, old_role.tenant_id, Some(parent), catalog.as_ref())
        .map_err(|e| sqlstate_error("XX000", &e.to_string()))?;

    state.audit_record(
        AuditEvent::PrivilegeChange,
        Some(identity.tenant_id),
        &identity.username,
        &format!("altered role '{name}': set inherit '{parent}'"),
    );

    Ok(vec![Response::Execution(Tag::new("ALTER ROLE"))])
}

/// DROP ROLE <name>
pub fn drop_role(
    state: &SharedState,
    identity: &AuthenticatedIdentity,
    parts: &[&str],
) -> PgWireResult<Vec<Response>> {
    require_admin(identity, "drop roles")?;

    if parts.len() < 3 {
        return Err(sqlstate_error("42601", "syntax: DROP ROLE <name>"));
    }

    let name = parts[2];
    let catalog = state.credentials.catalog();
    let dropped = state
        .roles
        .drop_role(name, catalog.as_ref())
        .map_err(|e| sqlstate_error("42704", &e.to_string()))?;

    if dropped {
        state.audit_record(
            AuditEvent::PrivilegeChange,
            Some(identity.tenant_id),
            &identity.username,
            &format!("dropped role '{name}'"),
        );
        Ok(vec![Response::Execution(Tag::new("DROP ROLE"))])
    } else {
        Err(sqlstate_error(
            "42704",
            &format!("role '{name}' does not exist"),
        ))
    }
}