bcode_workflow_store 0.0.1-alpha.0

Durable workflow persistence for bcode
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

//! Read-only maintenance backup verification behavior.
use super::{open_verified_backup, verify_reset_backup};
use switchy_database::Database;
use switchy_database::schema::{Column, DataType, create_table};
use switchy_database_connection::{SqliteAccess, SqliteOpenOptions, open_sqlite_rusqlite};

#[test]
fn missing_or_corrupt_backup_is_preserved_and_refused() {
    let directory = tempfile::tempdir().unwrap();
    let missing = directory.path().join("missing.db");
    assert!(verify_reset_backup(&missing).is_err());
    assert!(!missing.exists());

    let corrupt = directory.path().join("corrupt.db");
    let bytes = b"not a SQLite database";
    std::fs::write(&corrupt, bytes).unwrap();
    assert!(verify_reset_backup(&corrupt).is_err());
    assert_eq!(std::fs::read(&corrupt).unwrap(), bytes);
}

#[test]
fn valid_backup_is_verified_without_mutation_and_handle_is_read_only() {
    let directory = tempfile::tempdir().unwrap();
    let path = directory.path().join("backup.db");
    let options = SqliteOpenOptions {
        access: SqliteAccess::ReadWriteCreate,
        allow_uri: false,
        busy_timeout: std::time::Duration::from_secs(5),
        foreign_keys: false,
        connections: std::num::NonZeroUsize::MIN,
    };
    let writer = open_sqlite_rusqlite(&path, &options).unwrap();
    let transaction =
        super::database::begin(&writer, switchy_database::TransactionMode::Immediate).unwrap();
    futures::executor::block_on(
        create_table("backup_fixture")
            .column(Column {
                name: "identity".into(),
                data_type: DataType::Int,
                nullable: false,
                default: None,
                auto_increment: false,
            })
            .execute(&*transaction),
    )
    .unwrap();
    super::database::commit(transaction).unwrap();
    drop(writer);
    let before = std::fs::read(&path).unwrap();
    assert_eq!(
        verify_reset_backup(&path).unwrap(),
        super::sha256_hex(&before)
    );
    assert_eq!(std::fs::read(&path).unwrap(), before);

    let reader = open_verified_backup(&path).unwrap();
    assert!(
        futures::executor::block_on(
            reader
                .insert("backup_fixture")
                .value("identity", 1_i64)
                .execute(&reader)
        )
        .is_err()
    );
    let transaction =
        super::database::begin(&reader, switchy_database::TransactionMode::Deferred).unwrap();
    let rows = super::database::rows(
        &*transaction,
        &switchy_database::query::select("backup_fixture")
            .columns(&["identity"])
            .limit(1),
    )
    .unwrap();
    assert!(rows.is_empty());
    super::database::commit(transaction).unwrap();
    drop(reader);
    assert_eq!(std::fs::read(&path).unwrap(), before);
}

#[test]
fn structured_baseline_initialization_preserves_both_compatibility_contracts() {
    use switchy_database::query::FilterableQuery as _;
    for version in [42_u32, 43] {
        let directory = tempfile::tempdir().unwrap();
        let path = directory.path().join("workflow.db");
        let db = super::database::open(
            &path,
            SqliteAccess::ReadWriteCreate,
            std::time::Duration::ZERO,
            true,
        )
        .unwrap();
        super::schema::initialize(&db, version).unwrap();
        super::storage_compatibility::verify(&db).unwrap();
        let rows = super::database::rows(
            &db,
            &switchy_database::query::select("workflow_store_contract")
                .where_eq("contract_id", 1_i64)
                .limit(1),
        )
        .unwrap();
        assert_eq!(
            super::database::unsigned(&rows[0], "schema_version").unwrap(),
            u64::from(version)
        );
        let columns = futures::executor::block_on(db.get_table_columns("workflow_runs")).unwrap();
        assert_eq!(
            columns
                .iter()
                .find(|column| column.name == "concurrency_cap")
                .unwrap()
                .nullable,
            version == 43
        );
        let violations = futures::executor::block_on(db.sqlite_foreign_key_check()).unwrap();
        assert!(violations.is_empty());
    }
}

#[test]
fn typed_lock_errors_retain_retry_classification() {
    for error in [
        switchy_database::DatabaseError::Busy,
        switchy_database::DatabaseError::Locked,
    ] {
        assert!(
            super::WorkflowStoreError::StructuredDatabase(error)
                .is_transient_initialization_failure()
        );
    }
    assert!(
        !super::WorkflowStoreError::InvalidData("corrupt contract".into())
            .is_transient_initialization_failure()
    );
}