mysql_common/binlog/events/
write_rows_event_v1.rs

1// Copyright (c) 2021 Anatoly Ikorsky
2//
3// Licensed under the Apache License, Version 2.0
4// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT
5// license <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
6// option. All files in the project carrying such notice may not be copied,
7// modified, or distributed except according to those terms.
8
9use bitvec::prelude::*;
10
11use std::io::{self};
12
13use crate::{
14    binlog::{
15        consts::{BinlogVersion, EventType, RowsEventFlags},
16        BinlogCtx, BinlogEvent, BinlogStruct,
17    },
18    io::ParseBuf,
19    proto::{MyDeserialize, MySerialize},
20};
21
22use super::{rows_event::RowsEventCtx, RowsEvent, RowsEventRows, TableMapEvent};
23
24/// Write rows event v1 (mariadb and mysql 5.1.15-5.6.x).
25#[derive(Debug, Clone, Eq, PartialEq, Hash)]
26#[repr(transparent)]
27pub struct WriteRowsEventV1<'a>(RowsEvent<'a>);
28
29impl<'a> WriteRowsEventV1<'a> {
30    /// Returns the number that identifies the table (see `TableMapEvent`).
31    pub fn table_id(&self) -> u64 {
32        self.0.table_id()
33    }
34
35    /// Returns the number of columns in the table.
36    pub fn num_columns(&self) -> u64 {
37        self.0.num_columns()
38    }
39
40    /// Returns columns in the after-image (only for WRITE and UPDATE).
41    ///
42    /// Each bit indicates whether corresponding column is used in the image.
43    pub fn columns_after_image(&'a self) -> &'a BitSlice<u8> {
44        self.0.columns_after_image().expect("must be here")
45    }
46
47    /// Returns raw rows data.
48    pub fn rows_data(&'a self) -> &'a [u8] {
49        self.0.rows_data()
50    }
51
52    /// Returns event flags (unknown bits are truncated).
53    pub fn flags(&'a self) -> RowsEventFlags {
54        self.0.flags()
55    }
56
57    /// Returns raw event flags (unknown bits are preserved).
58    pub fn flags_raw(&'a self) -> u16 {
59        self.0.flags_raw()
60    }
61
62    /// Returns an iterator over event's rows given the corresponding `TableMapEvent`.
63    pub fn rows(&'a self, table_map_event: &'a TableMapEvent<'a>) -> RowsEventRows<'a> {
64        RowsEventRows::new(&self.0, table_map_event, ParseBuf(self.rows_data()))
65    }
66
67    pub fn into_owned(self) -> WriteRowsEventV1<'static> {
68        WriteRowsEventV1(self.0.into_owned())
69    }
70}
71
72impl<'de> MyDeserialize<'de> for WriteRowsEventV1<'de> {
73    const SIZE: Option<usize> = RowsEvent::SIZE;
74    type Ctx = BinlogCtx<'de>;
75
76    fn deserialize(ctx: Self::Ctx, buf: &mut ParseBuf<'de>) -> io::Result<Self> {
77        let ctx = RowsEventCtx {
78            event_type: Self::EVENT_TYPE,
79            binlog_ctx: ctx,
80        };
81        buf.parse(ctx).map(Self)
82    }
83}
84
85impl MySerialize for WriteRowsEventV1<'_> {
86    fn serialize(&self, buf: &mut Vec<u8>) {
87        self.0.serialize(&mut *buf);
88    }
89}
90
91impl<'a> BinlogStruct<'a> for WriteRowsEventV1<'a> {
92    fn len(&self, version: BinlogVersion) -> usize {
93        self.0.len(version)
94    }
95}
96
97impl<'a> BinlogEvent<'a> for WriteRowsEventV1<'a> {
98    const EVENT_TYPE: EventType = EventType::WRITE_ROWS_EVENT_V1;
99}
mysql_common/binlog/events/write_rows_event_v1.rs

mysql_common/binlog/events/
write_rows_event_v1.rs
