splinter 0.3.14

Splinter is a privacy-focused platform for distributed applications that provides a blockchain-inspired networking environment for communication and transactions between organizations.
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

// Copyright 2018-2020 Cargill Incorporated
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use super::UserStoreOperations;
use crate::biome::user::store::diesel::models::UserModel;
use crate::biome::user::store::diesel::schema::splinter_user;
use crate::biome::user::store::error::UserStoreError;

use diesel::{dsl::delete, prelude::*};

pub(in crate::biome::user) trait UserStoreDeleteUserOperation {
    fn delete_user(&self, user_id: &str) -> Result<(), UserStoreError>;
}

impl<'a, C> UserStoreDeleteUserOperation for UserStoreOperations<'a, C>
where
    C: diesel::Connection,
    <C as diesel::Connection>::Backend: diesel::backend::SupportsDefaultKeyword,
    <C as diesel::Connection>::Backend: 'static,
    String: diesel::deserialize::FromSql<diesel::sql_types::Text, C::Backend>,
{
    fn delete_user(&self, user_id: &str) -> Result<(), UserStoreError> {
        let user = splinter_user::table
            .find(&user_id)
            .first::<UserModel>(self.conn)
            .map(Some)
            .map_err(|err| UserStoreError::OperationError {
                context: "Failed to fetch user".to_string(),
                source: Box::new(err),
            })?;

        if user.is_none() {
            return Err(UserStoreError::NotFoundError(format!(
                "Failed to find user: {}",
                &user_id
            )));
        }

        delete(splinter_user::table.filter(splinter_user::id.eq(&user_id)))
            .execute(self.conn)
            .map(|_| ())
            .map_err(|err| UserStoreError::OperationError {
                context: "Failed to delete user".to_string(),
                source: Box::new(err),
            })?;
        Ok(())
    }
}