risingwave_frontend/user/
user_manager.rs

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1// Copyright 2025 RisingWave Labs
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use std::collections::HashMap;
16
17use itertools::Itertools;
18use risingwave_pb::user::{GrantPrivilege, UserInfo};
19
20use crate::user::user_catalog::UserCatalog;
21use crate::user::{UserId, UserInfoVersion};
22
23/// `UserInfoManager` is responsible for managing users.
24pub struct UserInfoManager {
25    version: UserInfoVersion,
26    user_by_name: HashMap<String, UserCatalog>,
27    user_name_by_id: HashMap<UserId, String>,
28}
29
30#[expect(clippy::derivable_impls)]
31impl Default for UserInfoManager {
32    fn default() -> Self {
33        UserInfoManager {
34            version: 0,
35            user_by_name: HashMap::new(),
36            user_name_by_id: HashMap::new(),
37        }
38    }
39}
40
41impl UserInfoManager {
42    pub fn get_user_mut(&mut self, id: UserId) -> Option<&mut UserCatalog> {
43        let name = self.user_name_by_id.get(&id)?;
44        self.user_by_name.get_mut(name)
45    }
46
47    pub fn get_all_users(&self) -> Vec<UserCatalog> {
48        self.user_by_name.values().cloned().collect_vec()
49    }
50
51    pub fn get_user_by_name(&self, user_name: &str) -> Option<&UserCatalog> {
52        self.user_by_name.get(user_name)
53    }
54
55    pub fn get_user_name_by_id(&self, id: UserId) -> Option<String> {
56        self.user_name_by_id.get(&id).cloned()
57    }
58
59    pub fn get_user_name_map(&self) -> &HashMap<UserId, String> {
60        &self.user_name_by_id
61    }
62
63    pub fn create_user(&mut self, user_info: UserInfo) {
64        let id = user_info.id;
65        let name = user_info.name.clone();
66        self.user_by_name
67            .try_insert(name.clone(), user_info.into())
68            .unwrap();
69        self.user_name_by_id.try_insert(id, name).unwrap();
70    }
71
72    pub fn drop_user(&mut self, id: UserId) {
73        let name = self.user_name_by_id.remove(&id).unwrap();
74        self.user_by_name.remove(&name).unwrap();
75    }
76
77    pub fn update_user(&mut self, user_info: UserInfo) {
78        let id = user_info.id;
79        let name = user_info.name.clone();
80        if let Some(old_name) = self.get_user_name_by_id(id) {
81            self.user_by_name.remove(&old_name);
82            self.user_by_name.insert(name.clone(), user_info.into());
83        } else {
84            self.user_by_name
85                .insert(name.clone(), user_info.into())
86                .unwrap();
87        }
88        self.user_name_by_id.insert(id, name).unwrap();
89    }
90
91    pub fn authorize(&mut self, _user_name: &str, _password: &str) -> bool {
92        todo!()
93    }
94
95    pub fn verify(&self, _user_name: &str, _privileges: &[GrantPrivilege]) -> bool {
96        todo!()
97    }
98
99    pub fn clear(&mut self) {
100        self.user_by_name.clear();
101        self.user_name_by_id.clear();
102    }
103
104    /// Get the user info cache's version.
105    pub fn version(&self) -> u64 {
106        self.version
107    }
108
109    /// Set the user info cache's version.
110    pub fn set_version(&mut self, version: UserInfoVersion) {
111        self.version = version;
112    }
113}
risingwave_frontend/user/user_manager.rs

risingwave_frontend/user/
user_manager.rs
