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
146
147
148
149
150
151

// Copyright 2023 The Matrix.org Foundation C.I.C.
//
// 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 deadpool_sqlite::{CreatePoolError, PoolError};
#[cfg(feature = "event-cache")]
use matrix_sdk_base::event_cache_store::EventCacheStoreError;
#[cfg(feature = "state-store")]
use matrix_sdk_base::store::StoreError as StateStoreError;
#[cfg(feature = "crypto-store")]
use matrix_sdk_crypto::CryptoStoreError;
use thiserror::Error;
use tokio::io;

/// All the errors that can occur when opening a SQLite store.
#[derive(Error, Debug)]
#[non_exhaustive]
pub enum OpenStoreError {
    /// Failed to create the DB's parent directory.
    #[error("Failed to create the database's parent directory")]
    CreateDir(#[source] io::Error),

    /// Failed to create the DB pool.
    #[error(transparent)]
    CreatePool(#[from] CreatePoolError),

    /// Failed to load the database's version.
    #[error("Failed to load database version")]
    LoadVersion(#[source] rusqlite::Error),

    /// The version of the database is missing.
    #[error("Missing database version")]
    MissingVersion,

    /// The version of the database is invalid.
    #[error("Invalid database version")]
    InvalidVersion,

    /// Failed to apply migrations.
    #[error("Failed to run migrations")]
    Migration(#[from] Error),

    /// Failed to get a DB connection from the pool.
    #[error(transparent)]
    Pool(#[from] PoolError),

    /// Failed to initialize the store cipher.
    #[error("Failed to initialize the store cipher")]
    InitCipher(#[from] matrix_sdk_store_encryption::Error),

    /// Failed to load the store cipher from the DB.
    #[error("Failed to load the store cipher from the DB")]
    LoadCipher(#[source] rusqlite::Error),

    /// Failed to save the store cipher to the DB.
    #[error("Failed to save the store cipher to the DB")]
    SaveCipher(#[source] rusqlite::Error),
}

#[derive(Debug, Error)]
pub enum Error {
    #[error(transparent)]
    Sqlite(rusqlite::Error),

    #[error("Failed to compute the maximum variable number from {0}")]
    SqliteMaximumVariableNumber(i32),

    #[error(transparent)]
    Pool(PoolError),

    #[error(transparent)]
    Encode(rmp_serde::encode::Error),

    #[error(transparent)]
    Decode(rmp_serde::decode::Error),

    #[error(transparent)]
    Json(#[from] serde_json::Error),

    #[error(transparent)]
    Encryption(matrix_sdk_store_encryption::Error),

    #[error("can't save/load sessions or group sessions in the store before an account is stored")]
    AccountUnset,

    #[error(transparent)]
    Pickle(#[from] vodozemac::PickleError),

    #[error("An object failed to be decrypted while unpickling")]
    Unpickle,

    #[error("Redaction failed: {0}")]
    Redaction(#[source] ruma::canonical_json::RedactionError),
}

macro_rules! impl_from {
    ( $ty:ty => $enum:ident::$variant:ident ) => {
        impl From<$ty> for $enum {
            fn from(value: $ty) -> Self {
                Self::$variant(value)
            }
        }
    };
}

impl_from!(rusqlite::Error => Error::Sqlite);
impl_from!(PoolError => Error::Pool);
impl_from!(rmp_serde::encode::Error => Error::Encode);
impl_from!(rmp_serde::decode::Error => Error::Decode);
impl_from!(matrix_sdk_store_encryption::Error => Error::Encryption);

#[cfg(feature = "crypto-store")]
impl From<Error> for CryptoStoreError {
    fn from(e: Error) -> Self {
        CryptoStoreError::backend(e)
    }
}

#[cfg(feature = "state-store")]
impl From<Error> for StateStoreError {
    fn from(e: Error) -> Self {
        match e {
            Error::Json(e) => StateStoreError::Json(e),
            Error::Encryption(e) => StateStoreError::Encryption(e),
            Error::Redaction(e) => StateStoreError::Redaction(e),
            e => StateStoreError::backend(e),
        }
    }
}

#[cfg(feature = "event-cache")]
impl From<Error> for EventCacheStoreError {
    fn from(e: Error) -> Self {
        match e {
            Error::Encryption(e) => EventCacheStoreError::Encryption(e),
            e => EventCacheStoreError::backend(e),
        }
    }
}

pub(crate) type Result<T, E = Error> = std::result::Result<T, E>;