cloacina 0.9.0

A Rust library for resilient task execution and orchestration.
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

/*
 *  Copyright 2025-2026 Colliery Software
 *
 *  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.
 */

//! OIDC in-flight login state (CLOACI-T-0801). **Postgres only.**
//!
//! Persists the authorization-code flow's `state -> (nonce, pkce_verifier)` so
//! the callback can land on any replica (NFR-003, no sticky sessions). Single
//! use: [`take`](OidcLoginFlowDAL::take) deletes-and-returns in one statement,
//! and only for an unexpired row, so a replayed/expired/unknown `state` yields
//! `None` (the callback then fails closed).

use crate::dal::unified::DAL;
use crate::error::ValidationError;

#[cfg(feature = "postgres")]
use chrono::{DateTime, Utc};
#[cfg(feature = "postgres")]
use diesel::prelude::*;

#[cfg(feature = "postgres")]
#[derive(Insertable)]
#[diesel(table_name = crate::database::schema::postgres::oidc_login_flows)]
struct NewLoginFlow {
    state: String,
    nonce: String,
    pkce_verifier: String,
    expires_at: chrono::NaiveDateTime,
}

/// DAL for the OIDC login-flow state. Postgres only.
pub struct OidcLoginFlowDAL<'a> {
    dal: &'a DAL,
}

impl<'a> OidcLoginFlowDAL<'a> {
    pub fn new(dal: &'a DAL) -> Self {
        Self { dal }
    }

    /// Stash an in-flight login keyed by `state`, valid until `expires_at`.
    #[cfg(feature = "postgres")]
    pub async fn put(
        &self,
        state: String,
        nonce: String,
        pkce_verifier: String,
        expires_at: DateTime<Utc>,
    ) -> Result<(), ValidationError> {
        let row = NewLoginFlow {
            state,
            nonce,
            pkce_verifier,
            expires_at: expires_at.naive_utc(),
        };
        let conn = self
            .dal
            .database
            .get_postgres_connection()
            .await
            .map_err(|e| ValidationError::ConnectionPool(e.to_string()))?;
        conn.interact(move |conn| {
            diesel::insert_into(crate::database::schema::postgres::oidc_login_flows::table)
                .values(&row)
                .execute(conn)
        })
        .await
        .map_err(|e| ValidationError::ConnectionPool(e.to_string()))??;
        Ok(())
    }

    /// Consume the flow for `state` (single use): delete-and-return its
    /// `(nonce, pkce_verifier)` iff the row exists and has not expired. A
    /// missing/expired/replayed `state` returns `None`.
    #[cfg(feature = "postgres")]
    pub async fn take(&self, state: &str) -> Result<Option<(String, String)>, ValidationError> {
        use crate::database::schema::postgres::oidc_login_flows as t;
        let state = state.to_string();
        let now = Utc::now().naive_utc();
        let conn = self
            .dal
            .database
            .get_postgres_connection()
            .await
            .map_err(|e| ValidationError::ConnectionPool(e.to_string()))?;
        let row: Option<(String, String)> = conn
            .interact(move |conn| {
                diesel::delete(t::table.filter(t::state.eq(state).and(t::expires_at.gt(now))))
                    .returning((t::nonce, t::pkce_verifier))
                    .get_result(conn)
                    .optional()
            })
            .await
            .map_err(|e| ValidationError::ConnectionPool(e.to_string()))??;
        Ok(row)
    }

    /// Delete all flows whose `expires_at` has passed. Returns the count.
    /// Run periodically by the server sweeper.
    #[cfg(feature = "postgres")]
    pub async fn sweep_expired(&self) -> Result<usize, ValidationError> {
        use crate::database::schema::postgres::oidc_login_flows as t;
        let now = Utc::now().naive_utc();
        let conn = self
            .dal
            .database
            .get_postgres_connection()
            .await
            .map_err(|e| ValidationError::ConnectionPool(e.to_string()))?;
        let n: usize = conn
            .interact(move |conn| {
                diesel::delete(t::table.filter(t::expires_at.lt(now))).execute(conn)
            })
            .await
            .map_err(|e| ValidationError::ConnectionPool(e.to_string()))??;
        Ok(n)
    }
}