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2023 iThome 鐵人賽
DAY 22
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Software Development

當rust 遇上 cqrs & es系列 第 22 篇

D22 test snapshot

15th鐵人賽
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測試一下snapshot是否work

在new 先前的 cqrs event store 改為aggregate：

let reader_store: PersistedEventStore<SurrealEventRepository, Reader>
    = PersistedEventStore::new_aggregate_store(repo.clone());
//    = PersistedEventStore::new_event_store(repo.clone());

let book_store: PersistedEventStore<SurrealEventRepository, Book> 
    = PersistedEventStore::new_aggregate_store(repo.clone());
//    = PersistedEventStore::new_event_store(repo.clone());

執行先前的

建立讀者1
建立讀者2
建立書籍1
書籍1入庫2本
讀者1借閱書籍1
讀者2借閱書籍1
讀者1歸還書籍1

完畢後 ES如下：

let reader_snaps : Vec<SerializedEvent> = repo.db
    .query("SELECT * FROM events ORDER BY aggregate_id, sequence").await?.take(0)?;
println!("======== [Source of Truth] Events ========\n{:#?}", reader_snaps);

[
    SerializedEvent {
        aggregate_id: "test-book-1",
        sequence: 1,
        aggregate_type: "Book",
        event_type: "BookEvent",
        event_version: "0.1.0",
        payload: Object {
            "BookCreated": Object {
                "description": String("使用rust，併同cqrs框架，實現event sourcing"),
                "id": String("test-book-1"),
                "isbn10": String("1234567890"),
                "title": String("Rust 語言開發實戰"),
            },
        },
        metadata: Object {},
    },
    SerializedEvent {
        aggregate_id: "test-book-1",
        sequence: 2,
        aggregate_type: "Book",
        event_type: "BookEvent",
        event_version: "0.1.0",
        payload: Object {
            "BookIngested": Object {
                "copies": Number(2),
                "id": String("test-book-1"),
            },
        },
        metadata: Object {},
    },
    SerializedEvent {
        aggregate_id: "test-book-1",
        sequence: 3,
        aggregate_type: "Book",
        event_type: "BookEvent",
        event_version: "0.1.0",
        payload: Object {
            "BookLent": Object {
                "due_date": String("2023-10-13T14:52:21.629658384Z"),
                "lent_date": String("2023-10-06T14:52:21.629657377Z"),
                "reader_id": String("test-reader-1"),
            },
        },
        metadata: Object {},
    },
    SerializedEvent {
        aggregate_id: "test-book-1",
        sequence: 4,
        aggregate_type: "Book",
        event_type: "BookEvent",
        event_version: "0.1.0",
        payload: Object {
            "BookLent": Object {
                "due_date": String("2023-10-13T14:52:21.635709830Z"),
                "lent_date": String("2023-10-06T14:52:21.635709093Z"),
                "reader_id": String("test-reader-2"),
            },
        },
        metadata: Object {},
    },
    SerializedEvent {
        aggregate_id: "test-book-1",
        sequence: 5,
        aggregate_type: "Book",
        event_type: "BookEvent",
        event_version: "0.1.0",
        payload: Object {
            "BookReturned": Object {
                "due_date": String("2023-10-13T14:52:21.641074341Z"),
                "lent_date": String("2023-10-06T14:52:21.641073294Z"),
                "reader_id": String("test-reader-1"),
                "returned_date": String("2023-10-08T14:52:21.641076051Z"),
            },
        },
        metadata: Object {},
    },
    SerializedEvent {
        aggregate_id: "test-reader-1",
        sequence: 1,
        aggregate_type: "Reader",
        event_type: "ReaderEvent",
        event_version: "0.1.0",
        payload: Object {
            "ReaderCreated": Object {
                "id": String("e5cc5ca2-1d86-41e7-be3b-3354ff4c02f2"),
                "name": String("John Smith"),
            },
        },
        metadata: Object {},
    },
    SerializedEvent {
        aggregate_id: "test-reader-1",
        sequence: 2,
        aggregate_type: "Reader",
        event_type: "ReaderEvent",
        event_version: "0.1.0",
        payload: Object {
            "BookBorrowed": Object {
                "book_id": String("test-book-1"),
                "borrowed_date": String("2023-10-06T14:52:21.625621265Z"),
                "due_date": String("2023-10-13T14:52:21.625630153Z"),
                "return_date": Null,
            },
        },
        metadata: Object {},
    },
    SerializedEvent {
        aggregate_id: "test-reader-1",
        sequence: 3,
        aggregate_type: "Reader",
        event_type: "ReaderEvent",
        event_version: "0.1.0",
        payload: Object {
            "BookReturned": Object {
                "book_id": String("test-book-1"),
                "borrowed_date": String("2023-10-06T14:52:21.625621265Z"),
                "due_date": String("2023-10-13T14:52:21.625630153Z"),
                "return_date": String("2023-10-08T14:52:21.638410679Z"),
            },
        },
        metadata: Object {},
    },
    SerializedEvent {
        aggregate_id: "test-reader-2",
        sequence: 1,
        aggregate_type: "Reader",
        event_type: "ReaderEvent",
        event_version: "0.1.0",
        payload: Object {
            "ReaderCreated": Object {
                "id": String("8b513dfb-25dc-4ac4-8455-41dfe18fd2f9"),
                "name": String("Mary Ann"),
            },
        },
        metadata: Object {},
    },
    SerializedEvent {
        aggregate_id: "test-reader-2",
        sequence: 2,
        aggregate_type: "Reader",
        event_type: "ReaderEvent",
        event_version: "0.1.0",
        payload: Object {
            "BookBorrowed": Object {
                "book_id": String("test-book-1"),
                "borrowed_date": String("2023-10-06T14:52:21.632674289Z"),
                "due_date": String("2023-10-13T14:52:21.632675278Z"),
                "return_date": Null,
            },
        },
        metadata: Object {},
    },
]

查詢snapshot：

let reader_snaps : Vec<SerializedSnapshot> = repo.db
    .query("SELECT * FROM snapshots ORDER BY aggregate_id, sequence")
    .await?
    .take(0)?;
println!("======== [Source of Truth] Snapshots ========\n{:#?}", reader_snaps);

======== [Source of Truth] Snapshots ========
[
    SerializedSnapshot {
        aggregate_id: "test-book-1",
        aggregate: Object {
            "copies": Number(2),
            "description": String("使用rust，併同cqrs框架，實現event sourcing"),
            "id": String("test-book-1"),
            "isbn10": String("1234567890"),
            "lending_records": Array [
                Object {
                    "due_date": String("2023-10-13T14:54:33.543438667Z"),
                    "lent_date": String("2023-10-06T14:54:33.543437952Z"),
                    "reader_id": String("test-reader-2"),
                },
            ],
            "lent_history": Array [
                Object {
                    "due_date": String("2023-10-13T14:54:33.549005226Z"),
                    "lent_date": String("2023-10-06T14:54:33.549004182Z"),
                    "reader_id": String("test-reader-1"),
                    "returned_date": String("2023-10-08T14:54:33.549007094Z"),
                },
            ],
            "title": String("Rust 語言開發實戰"),
        },
        current_sequence: 5,
        current_snapshot: 5,
    },
    SerializedSnapshot {
        aggregate_id: "test-reader-1",
        aggregate: Object {
            "borrowed_books": Array [],
            "borrowed_history": Array [
                Object {
                    "book_id": String("test-book-1"),
                    "borrowed_date": String("2023-10-06T14:54:33.533163671Z"),
                    "due_date": String("2023-10-13T14:54:33.533167117Z"),
                    "return_date": String("2023-10-06T14:54:33.546738258Z"),
                },
            ],
            "id": String("291bdbde-b30a-4fc1-b08b-76878bb53b2b"),
            "name": String("John Smith"),
        },
        current_sequence: 3,
        current_snapshot: 3,
    },
    SerializedSnapshot {
        aggregate_id: "test-reader-2",
        aggregate: Object {
            "borrowed_books": Array [
                Object {
                    "book_id": String("test-book-1"),
                    "borrowed_date": String("2023-10-06T14:54:33.540181878Z"),
                    "due_date": String("2023-10-13T14:54:33.540182676Z"),
                    "return_date": Null,
                },
            ],
            "borrowed_history": Array [],
            "id": String("88d576ad-516c-4fea-bece-e90d9a5dd41b"),
            "name": String("Mary Ann"),
        },
        current_sequence: 2,
        current_snapshot: 2,
    },
]

讀取 Query: reader

let reader_dtos: Vec<ReaderDto> = repo.db
    .query("SELECT * FROM readers ORDER BY id").await?.take(0)?;
println!("======== [Query] Readers ========\n{:#?}", reader_dtos);

======== [Query] Readers ========
[
    ReaderDto {
        reader_id: "test-reader-1",
        name: "John Smith",
        books_borrowed: 0,
        books_borrows: [],
        next_due_date: None,
    },
    ReaderDto {
        reader_id: "test-reader-2",
        name: "Mary Ann",
        books_borrowed: 1,
        books_borrows: [
            ReaderBorrows {
                book_id: "test-book-1",
                book_name: "Rust 語言開發實戰",
                borrowed_date: 2023-10-06T14:56:17.316562653Z,
                due_date: 2023-10-13T14:56:17.316563388Z,
            },
        ],
        next_due_date: Some(
            2023-10-13T14:56:17.316563388Z,
        ),
    },
]

讀取 Query: book

let book_dtos: Vec<BookDto> = repo.db
    .query("SELECT * FROM books ORDER BY id").await?.take(0)?;
println!("======== [Query] Book ========\n{:#?}", book_dtos);

======== [Query] Book ========
[
    BookDto {
        book_id: "test-book-1",
        title: "Rust 語言開發實戰",
        isbn10: "1234567890",
        description: "使用rust，併同cqrs框架，實現event sourcing",
        copies: 2,
        available_copies: 1,
    },
]

上一篇
D21 snapshot
下一篇
D23 snapshot size
系列文
當rust 遇上 cqrs & es 共 30 篇
  1. 26
    D26 impl upcaster
  2. 27
    D27 past events in sourcing
  3. 28
    D28 test upcater
  4. 29
    D29 metadata in es
  5. 30
    D30 Ending
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