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mod.rs
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// Copyright (c) 2020 Anatoly Ikorsky
//
// Licensed under the Apache License, Version 2.0
// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT
// license <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. All files in the project carrying such notice may not be copied,
// modified, or distributed except according to those terms.
//! Binlog-related structures and functions. This implementation assumes
//! binlog version >= 4 (MySql >= 5.0.0).
//!
//! All structures of this module contains raw data that may not necessarily be valid.
//! Please consult the MySql documentation.
// #![cfg(features = "binlog")]
use std::{
collections::HashMap,
convert::TryFrom,
hash::Hash,
io::{
self, BufRead, Error,
ErrorKind::{InvalidData, UnexpectedEof},
Read, Write,
},
};
use crate::{
constants::ColumnType,
proto::{MyDeserialize, MySerialize},
};
#[allow(unused)]
use self::events::TransactionPayloadEvent;
use self::{
consts::{BinlogVersion, EventType},
events::{Event, FormatDescriptionEvent, RotateEvent, TableMapEvent},
};
pub mod consts;
pub mod decimal;
pub mod events;
pub mod jsonb;
pub mod jsondiff;
pub mod misc;
pub mod row;
pub mod value;
pub struct BinlogCtx<'a> {
pub event_size: usize,
pub fde: &'a FormatDescriptionEvent<'a>,
}
impl<'a> BinlogCtx<'a> {
pub fn new(event_size: usize, fde: &'a FormatDescriptionEvent<'a>) -> Self {
Self { event_size, fde }
}
}
/// Binlog event.
pub trait BinlogStruct<'a>: MySerialize + MyDeserialize<'a, Ctx = BinlogCtx<'a>> {
/// Returns serialized length of this struct in bytes.
///
/// * implementation must truncate each field to its maximum length.
fn len(&self, version: BinlogVersion) -> usize;
}
pub trait BinlogEvent<'a>: BinlogStruct<'a> {
/// An event type, associated with this struct (if any).
const EVENT_TYPE: EventType;
}
/// A binlog file starts with a Binlog File Header `[ fe 'bin' ]`.
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub struct BinlogFileHeader;
impl BinlogFileHeader {
/// Length of a binlog file header.
pub const LEN: usize = 4;
/// Value of a binlog file header.
pub const VALUE: [u8; Self::LEN] = [0xfe, b'b', b'i', b'n'];
pub fn read<T: Read>(mut input: T) -> io::Result<Self> {
let mut buf = [0_u8; Self::LEN];
input.read_exact(&mut buf)?;
if buf != Self::VALUE {
return Err(Error::new(InvalidData, "invalid binlog file header"));
}
Ok(Self)
}
pub fn write<T: Write>(&self, _version: BinlogVersion, mut output: T) -> io::Result<()> {
output.write_all(&Self::VALUE)
}
pub fn len(&self, _version: BinlogVersion) -> usize {
Self::LEN
}
}
/// Reader for binlog events.
///
/// # Note
///
/// It's a low-level stream reader and only maintains actual fde and table map,
/// so one should properly handle encountered events (see docs on [`EventStreamReader::read`]).
#[derive(Debug)]
pub struct EventStreamReader {
fde: FormatDescriptionEvent<'static>,
table_map: HashMap<u64, TableMapEvent<'static>>,
}
impl EventStreamReader {
/// Creates a new instance.
pub fn new(version: BinlogVersion) -> Self {
Self {
fde: FormatDescriptionEvent::new(version),
table_map: Default::default(),
}
}
/// Returns the format description event.
///
/// Returns the default placeholder if there was no FDE yet.
pub fn get_fde(&self) -> &FormatDescriptionEvent<'static> {
&self.fde
}
/// Disable/Enable checksum verification without changing the original algorithm.
///
/// See [`EventStreamReader::read_decompressed`].
pub(crate) fn set_checksum_enabled(&mut self, enabled: bool) {
self.fde.footer_mut().set_checksum_enabled(enabled);
}
/// Returns the table map event for the given table id.
///
/// Should be availeble if rows event with this table id encountered in the stream.
pub fn get_tme(&self, table_id: u64) -> Option<&TableMapEvent<'static>> {
self.table_map.get(&table_id)
}
/// Will read next event from the given stream (Returns None if stream is exhausted).
///
/// # Note
///
/// Since MySql 8.0.20 it is possible for an event stream to contain an embedded
/// stream of events in form of a [`TransactionPayloadEvent`]. This means that
/// to properly handle table maps it is necessary to read the embedded stream
/// as soon as it is encountered (see [`EventStreamReader::read_decompressed`]).
pub fn read<T: BufRead>(&mut self, mut input: T) -> io::Result<Option<Event>> {
if input.fill_buf().map(|x| x.is_empty())? {
return Ok(None);
}
let event = Event::read(&self.fde, input)?;
self.handle_event(&event)?;
Ok(Some(event))
}
/// This function reads decompressed payload of a Transaction_payload_event
/// (see [`TransactionPayloadEvent::decompressed`]).
///
/// The difference is that checksum verification will be disabled according to the WL#3549.
///
/// # Warning
///
/// This function can't be used to skip checksum verification for regular events.
///
/// # Errors
///
/// There is a list of events that should never be a part of a transaction payload and the list
/// includes the [`TransactionPayloadEvent`] itself.
/// This function will emit an [`io::ErrorKind::Other`] if [`TransactionPayloadEvent`]
/// is encountered within the compressed payload.
pub fn read_decompressed<T: BufRead>(&mut self, input: T) -> io::Result<Option<Event>> {
self.set_checksum_enabled(false);
let result = self.read(input);
self.set_checksum_enabled(true);
let Some(event) = result? else {
return Ok(None);
};
if event.header().event_type_raw() == EventType::TRANSACTION_PAYLOAD_EVENT as u8 {
return Err(io::Error::new(
io::ErrorKind::Other,
"TRANSACTION_PAYLOAD_EVENT encountered",
));
}
self.handle_event(&event)?;
Ok(Some(event))
}
fn handle_event(&mut self, event: &Event) -> io::Result<()> {
let event_type = event.header().event_type_raw();
if event_type == EventType::FORMAT_DESCRIPTION_EVENT as u8 {
// we'll redefine fde with an actual one
let fde = event.read_event::<FormatDescriptionEvent>()?;
self.fde = fde.into_owned().with_footer(event.footer());
} else if event_type == EventType::TABLE_MAP_EVENT as u8 {
// we'll maintain known table maps
let tme = event.read_event::<TableMapEvent>()?;
self.table_map.insert(tme.table_id(), tme.into_owned());
} else if event_type == EventType::ROTATE_EVENT as u8 {
// we'll keep table map size within reasonlable bounds
// TODO: This value is arbitrary
const TABLE_MAP_MAX_SIZE: usize = 64;
let re = event.read_event::<RotateEvent>()?;
if !re.is_fake() {
self.table_map.clear();
self.table_map.shrink_to(TABLE_MAP_MAX_SIZE);
}
}
Ok(())
}
}
/// Binlog file.
///
/// It's an iterator over events in a binlog file.
#[derive(Debug)]
pub struct BinlogFile<T> {
reader: EventStreamReader,
read: T,
}
impl<T: BufRead> BinlogFile<T> {
/// Creates a new instance.
///
/// It'll try to read binlog file header.
pub fn new(version: BinlogVersion, mut read: T) -> io::Result<Self> {
let reader = EventStreamReader::new(version);
BinlogFileHeader::read(&mut read)?;
Ok(Self { reader, read })
}
/// Returns a reference to the binlog stream reader.
pub fn reader(&self) -> &EventStreamReader {
&self.reader
}
/// Returns a mutable reference to the binlog stream reader.
pub fn reader_mut(&mut self) -> &mut EventStreamReader {
&mut self.reader
}
}
impl<T: BufRead> Iterator for BinlogFile<T> {
type Item = io::Result<Event>;
fn next(&mut self) -> Option<Self::Item> {
match self.reader.read(&mut self.read) {
Ok(event) => event.map(Ok),
Err(err) if err.kind() == UnexpectedEof => None,
Err(err) => Some(Err(err)),
}
}
}
impl ColumnType {
/// Returns type-specific metadata for this column type,
/// as well as the total number of occupied bytes.
///
/// `is_array` must be true if `self` is from `MYSQL_TYPE_TYPED_ARRAY` metadata.
fn get_metadata<'a>(&self, ptr: &'a [u8], is_array: bool) -> Option<(&'a [u8], usize)> {
match self {
Self::MYSQL_TYPE_TINY_BLOB
| Self::MYSQL_TYPE_BLOB
| Self::MYSQL_TYPE_MEDIUM_BLOB
| Self::MYSQL_TYPE_LONG_BLOB
| Self::MYSQL_TYPE_DOUBLE
| Self::MYSQL_TYPE_FLOAT
| Self::MYSQL_TYPE_GEOMETRY
| Self::MYSQL_TYPE_TIME2
| Self::MYSQL_TYPE_DATETIME2
| Self::MYSQL_TYPE_TIMESTAMP2
| Self::MYSQL_TYPE_JSON => ptr.get(..1).map(|x| (x, 1)),
Self::MYSQL_TYPE_VARCHAR => {
if is_array {
ptr.get(..3).map(|x| (x, 3))
} else {
ptr.get(..2).map(|x| (x, 2))
}
}
Self::MYSQL_TYPE_NEWDECIMAL
| Self::MYSQL_TYPE_SET
| Self::MYSQL_TYPE_ENUM
| Self::MYSQL_TYPE_STRING
| Self::MYSQL_TYPE_BIT => ptr.get(..2).map(|x| (x, 2)),
Self::MYSQL_TYPE_TYPED_ARRAY => Self::try_from(*ptr.first()?)
.ok()?
.get_metadata(ptr.get(1..)?, true)
.map(|(x, n)| (x, n + 1)),
_ => Some((&[], 0)),
}
}
}
#[cfg(test)]
mod tests {
use std::{
collections::HashMap,
io,
iter::{once, repeat},
};
use super::{
consts::{EventFlags, EventType},
events::{BinlogEventHeader, EventData, GtidEvent},
BinlogFile, BinlogFileHeader, BinlogVersion,
};
use crate::{
binlog::{events::RowsEventData, value::BinlogValue},
collations::CollationId,
constants::ColumnFlags,
proto::MySerialize,
value::Value,
};
const BINLOG_FILE: &[u8] = &[
0xfe, 0x62, 0x69, 0x6e, 0xfc, 0x35, 0xbb, 0x4a, 0x0f, 0x01, 0x00, 0x00, 0x00, 0x5e, 0x00,
0x00, 0x00, 0x62, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x35, 0x2e, 0x30, 0x2e, 0x38,
0x36, 0x2d, 0x64, 0x65, 0x62, 0x75, 0x67, 0x2d, 0x6c, 0x6f, 0x67, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xfc, 0x35, 0xbb, 0x4a, 0x13, 0x38, 0x0d, 0x00, 0x08, 0x00, 0x12, 0x00, 0x04, 0x04, 0x04,
0x04, 0x12, 0x00, 0x00, 0x4b, 0x00, 0x04, 0x1a, 0xfd, 0x35, 0xbb, 0x4a, 0x02, 0x01, 0x00,
0x00, 0x00, 0x64, 0x00, 0x00, 0x00, 0xc6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x1a, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x03, 0x73, 0x74, 0x64, 0x04,
0x08, 0x00, 0x08, 0x00, 0x08, 0x00, 0x74, 0x65, 0x73, 0x74, 0x00, 0x63, 0x72, 0x65, 0x61,
0x74, 0x65, 0x20, 0x74, 0x61, 0x62, 0x6c, 0x65, 0x20, 0x74, 0x31, 0x28, 0x61, 0x20, 0x69,
0x6e, 0x74, 0x29, 0x20, 0x65, 0x6e, 0x67, 0x69, 0x6e, 0x65, 0x3d, 0x20, 0x69, 0x6e, 0x6e,
0x6f, 0x64, 0x62, 0xfd, 0x35, 0xbb, 0x4a, 0x02, 0x01, 0x00, 0x00, 0x00, 0x65, 0x00, 0x00,
0x00, 0x2b, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x05, 0x00, 0x00, 0x1a, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x06, 0x03, 0x73, 0x74, 0x64, 0x04, 0x08, 0x00, 0x08, 0x00, 0x08,
0x00, 0x6d, 0x79, 0x73, 0x71, 0x6c, 0x00, 0x63, 0x72, 0x65, 0x61, 0x74, 0x65, 0x20, 0x74,
0x61, 0x62, 0x6c, 0x65, 0x20, 0x74, 0x32, 0x28, 0x61, 0x20, 0x69, 0x6e, 0x74, 0x29, 0x20,
0x65, 0x6e, 0x67, 0x69, 0x6e, 0x65, 0x3d, 0x20, 0x69, 0x6e, 0x6e, 0x6f, 0x64, 0x62, 0xfd,
0x35, 0xbb, 0x4a, 0x02, 0x01, 0x00, 0x00, 0x00, 0x45, 0x00, 0x00, 0x00, 0x70, 0x01, 0x00,
0x00, 0x08, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x1a,
0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x06, 0x03, 0x73, 0x74, 0x64, 0x04, 0x08, 0x00, 0x08, 0x00, 0x08, 0x00, 0x6d, 0x79, 0x73,
0x71, 0x6c, 0x00, 0x42, 0x45, 0x47, 0x49, 0x4e, 0xfd, 0x35, 0xbb, 0x4a, 0x02, 0x01, 0x00,
0x00, 0x00, 0x5c, 0x00, 0x00, 0x00, 0xcc, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x1a, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00,
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];
#[test]
fn binlog_file_header_roundtrip() -> io::Result<()> {
let mut output = Vec::new();
let binlog_file_header = BinlogFileHeader::read(BINLOG_FILE)?;
binlog_file_header.write(BinlogVersion::Version4, &mut output)?;
assert_eq!(&output[..], &BINLOG_FILE[..BinlogFileHeader::LEN]);
Ok(())
}
#[test]
fn binlog_file_iterator() -> io::Result<()> {
let binlog_file = BinlogFile::new(BinlogVersion::Version4, BINLOG_FILE)?;
let mut total = 0;
let mut ev_pos = 4;
for (i, ev) in binlog_file.enumerate() {
let data_start = ev_pos + BinlogEventHeader::LEN;
let ev = ev?;
match i {
0 => {
assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783036,
EventType::FORMAT_DESCRIPTION_EVENT,
1,
94,
98,
EventFlags::empty()
)
)
}
1 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
100,
198,
EventFlags::empty()
)
),
2 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
101,
299,
EventFlags::empty()
)
),
3 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
69,
368,
EventFlags::LOG_EVENT_SUPPRESS_USE_F
)
),
4 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
92,
460,
EventFlags::empty()
)
),
5 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
93,
553,
EventFlags::empty()
)
),
6 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::XID_EVENT,
1,
27,
580,
EventFlags::empty()
)
),
7 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
100,
680,
EventFlags::empty()
)
),
8 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
101,
781,
EventFlags::empty()
)
),
9 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
69,
850,
EventFlags::LOG_EVENT_SUPPRESS_USE_F
)
),
10 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
92,
942,
EventFlags::empty()
)
),
11 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
93,
1035,
EventFlags::empty()
)
),
12 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
72,
1107,
EventFlags::LOG_EVENT_SUPPRESS_USE_F
)
),
13 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
97,
1204,
EventFlags::empty()
)
),
14 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
98,
1302,
EventFlags::empty()
)
),
15 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
69,
1371,
EventFlags::LOG_EVENT_SUPPRESS_USE_F
)
),
16 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
92,
1463,
EventFlags::empty()
)
),
17 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
93,
1556,
EventFlags::empty()
)
),
18 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::QUERY_EVENT,
1,
70,
1626,
EventFlags::LOG_EVENT_SUPPRESS_USE_F
)
),
19 => assert_eq!(
ev.header(),
BinlogEventHeader::new(
1253783037,
EventType::ROTATE_EVENT,
1,
44,
1670,
EventFlags::empty()
)
),
_ => panic!("too many"),
}
assert_eq!(
ev.data(),
&BINLOG_FILE[data_start
..(data_start + ev.header().event_size() as usize - BinlogEventHeader::LEN)],
);
total += 1;
ev_pos = ev.header().log_pos() as usize;
}
assert_eq!(total, 20);
Ok(())
}
#[test]
fn binlog_event_roundtrip() -> io::Result<()> {
const PATH: &str = "./test-data/binlogs";
let binlogs = std::fs::read_dir(PATH)?
.filter_map(|path| path.ok())
.map(|entry| entry.path())
.filter(|path| path.file_name().is_some());
'outer: for file_path in binlogs {
let file_data = std::fs::read(dbg!(&file_path))?;
let mut binlog_file = BinlogFile::new(BinlogVersion::Version4, &file_data[..])?;
let mut ev_pos = 4;
let mut table_map_events = HashMap::new();
while let Some(ev) = binlog_file.next() {
let ev = ev?;
let _ = dbg!(ev.header().event_type());
let ev_end = ev_pos + ev.header().event_size() as usize;
let binlog_version = binlog_file.reader.fde.binlog_version();
let mut output = Vec::new();
ev.write(binlog_version, &mut output)?;
let event = match ev.read_data() {
Ok(event) => {
let event = match event {
Some(e) => e,
None => {
if file_path.file_name().unwrap() == "mariadb-bin.000001" {
continue;
} else {
dbg!(&ev);
panic!();
}
}
};
match event {
EventData::TableMapEvent(ref ev) => {
// store table maps for later use
table_map_events.insert(ev.table_id(), ev.clone().into_owned());
event
}
EventData::RowsEvent(ref rows_event) => {
// iterate rows in a rows event
let table_map_event =
binlog_file.reader().get_tme(rows_event.table_id()).unwrap();
for row in rows_event.rows(table_map_event) {
let _row = row.unwrap();
if file_path.file_name().unwrap() == "mariadb-bin.000001" {
// should parse metadata for `binlog_row_metadata=FULL`
let after = _row.1.as_ref().unwrap();
let columns = after.columns_ref();
for col in columns.iter() {
assert_eq!(col.schema_ref(), b"toddy_test");
assert_eq!(col.table_ref(), b"outbox");
assert_eq!(col.org_table_ref(), b"outbox");
}
for (col, col_name) in columns.iter().zip([
"id",
"topic",
"event_type",
"event",
"created",
]) {
assert_eq!(col.name_ref(), col_name.as_bytes());
}
for (col, f) in columns.iter().zip(
once(ColumnFlags::PRI_KEY_FLAG)
.chain(repeat(ColumnFlags::empty())),
) {
assert_eq!(col.flags(), f);
}
for (col, charset) in columns.iter().zip([
CollationId::UNKNOWN_COLLATION_ID,
CollationId::UTF8MB4_GENERAL_CI,
CollationId::UTF8MB4_GENERAL_CI,
CollationId::BINARY,
CollationId::UNKNOWN_COLLATION_ID,
]) {
assert_eq!(col.character_set(), charset as u16);
}
}
}
event
}
_ => event,
}
}
Err(err)
if err.kind() == std::io::ErrorKind::Other
&& ev.header().event_type() == Ok(EventType::XID_EVENT)
&& ev.header().event_size() == 0x26
&& file_path.file_name().unwrap() == "ver_5_1-wl2325_r.001" =>
{
// ver_5_1-wl2325_r.001 testfile contains broken xid event.
continue 'outer;
}
Err(err)
if err.kind() == std::io::ErrorKind::UnexpectedEof
&& ev.header().event_type() == Ok(EventType::QUERY_EVENT)
&& ev.header().event_size() == 171
&& file_path.file_name().unwrap() == "corrupt-relay-bin.000624" =>
{
// corrupt-relay-bin.000624 testfile contains broken query event.
continue 'outer;
}
other => other.transpose().unwrap()?,
};
if file_path.file_name().unwrap() == "binlog-invisible-columns.000001" {
if let Some(EventData::TableMapEvent(ev)) = ev.read_data().unwrap() {
let optional_meta = ev.iter_optional_meta();
for meta in optional_meta {
meta.unwrap();
}
}
}
if file_path.file_name().unwrap() == "mysql-enum-string-set.000001" {
if let Some(EventData::RowsEvent(data)) = ev.read_data().unwrap() {
let table_map_event =
binlog_file.reader().get_tme(data.table_id()).unwrap();
for row in data.rows(table_map_event) {
let (before, after) = row.unwrap();
match data {
RowsEventData::WriteRowsEvent(_) => {
assert!(before.is_none());
let after = after.unwrap().unwrap();
let mut j = 0;
for v in after {
j += 1;
match j {
1 => assert_eq!(v, BinlogValue::Value("0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789".into())),
2 => assert_eq!(v, BinlogValue::Value("0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456780123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456780123456789012345678901234567890123456789".into())),
3 => assert_eq!(v, BinlogValue::Value(1_i8.into())),
4 => assert_eq!(v, BinlogValue::Value([0b00000101_u8].into())),
5 => assert_eq!(v, BinlogValue::Value("0123456789".into())),
_ => panic!(),
}
}
assert_eq!(j, 5);
}
RowsEventData::UpdateRowsEvent(_) => {
let before = before.unwrap().unwrap();
let mut j = 0;
for v in before {
j += 1;
match j {
1 => assert_eq!(v, BinlogValue::Value("0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789".into())),
2 => assert_eq!(v, BinlogValue::Value("0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456780123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456780123456789012345678901234567890123456789".into())),
3 => assert_eq!(v, BinlogValue::Value(1_i8.into())),
4 => assert_eq!(v, BinlogValue::Value([0b00000101_u8].into())),
5 => assert_eq!(v, BinlogValue::Value("0123456789".into())),
_ => panic!(),
}
}
assert_eq!(j, 5);
let after = after.unwrap().unwrap();
let mut j = 0;
for v in after {
j += 1;
match j {
1 => assert_eq!(v, BinlogValue::Value("field1".into())),
2 => assert_eq!(v, BinlogValue::Value("field_2".into())),
3 => assert_eq!(v, BinlogValue::Value(2_i8.into())),
4 => assert_eq!(v, BinlogValue::Value([0b00001010_u8].into())),
5 => assert_eq!(v, BinlogValue::Value("0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456780123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456780123456789012345678901234567890123456789".into())),
_ => panic!(),
}
}
assert_eq!(j, 5);
}
RowsEventData::DeleteRowsEvent(_) => {
assert!(after.is_none());
let before = before.unwrap().unwrap();
let mut j = 0;
for v in before {
j += 1;
match j {
1 => assert_eq!(v, BinlogValue::Value("field1".into())),
2 => assert_eq!(v, BinlogValue::Value("field_2".into())),
3 => assert_eq!(v, BinlogValue::Value(2_i8.into())),
4 => assert_eq!(v, BinlogValue::Value([0b00001010_u8].into())),
5 => assert_eq!(v, BinlogValue::Value("0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456780123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456780123456789012345678901234567890123456789".into())),
_ => panic!(),
}
}
assert_eq!(j, 5);
}
_ => panic!(),
}
}
}
}
if file_path.file_name().unwrap() == "mariadb-bin.000001" {
// Extraneous bytes in RotateEvent file name
// https://github.com/blackbeam/mysql_async/issues/189
if let Some(EventData::RotateEvent(ev)) = ev.read_data().unwrap() {
assert_ne!(ev.name_raw(), b"mariadb-bin.000001");
}
}
if file_path.file_name().unwrap() == "mysql_type_bit.000001" {
if let Some(EventData::RowsEvent(ev)) = ev.read_data().unwrap() {
let table_map_event = binlog_file.reader().get_tme(ev.table_id()).unwrap();
for row in ev.rows(table_map_event) {
let (before, after) = row.unwrap();
assert_eq!(before, None);
assert_eq!(
after.unwrap().unwrap(),
vec![
BinlogValue::Value(Value::Bytes(vec![0b100])),
BinlogValue::Value(Value::Bytes(b"foo".to_vec())),
BinlogValue::Value(Value::Bytes(vec![0b100000])),
],
);
}
}
}
if file_path.file_name().unwrap() != "mariadb-bin.000001" {
assert_eq!(output, &file_data[ev_pos..ev_end]);
}
if file_path.file_name().unwrap() == "transaction_compression.000001" {
if let Some(EventData::TransactionPayloadEvent(data)) = ev.read_data().unwrap()
{
let mut payload = data.decompressed()?;
let reader = binlog_file.reader_mut();
let mut binlog_ev = reader.read_decompressed(&mut payload)?.unwrap();
assert_eq!(binlog_ev.header().event_type(), Ok(EventType::QUERY_EVENT));
binlog_ev = reader.read_decompressed(&mut payload)?.unwrap();
assert_eq!(
binlog_ev.header().event_type(),
Ok(EventType::TABLE_MAP_EVENT)
);
binlog_ev = reader.read_decompressed(&mut payload)?.unwrap();
assert_eq!(
binlog_ev.header().event_type(),
Ok(EventType::WRITE_ROWS_EVENT)
);
binlog_ev = reader.read_decompressed(&mut payload)?.unwrap();
assert_eq!(binlog_ev.header().event_type(), Ok(EventType::XID_EVENT));
assert!(reader.read_decompressed(&mut payload)?.is_none());
}
}
output = Vec::new();
event.serialize(&mut output);
if matches!(event, EventData::UserVarEvent(_)) {
// Server may or may not write the flags field, but we will always write it.
assert_eq!(&output[..ev.data().len()], ev.data());
assert!(output.len() == ev.data().len() || output.len() == ev.data().len() + 1);
} else if (matches!(event, EventData::GtidEvent(_))
|| matches!(event, EventData::AnonymousGtidEvent(_)))
&& ev.fde().split_version() < (5, 7, 0)
{
// MySql 5.6 does not write TS_TYPE and following post-header fields
assert_eq!(&output[..GtidEvent::POST_HEADER_LENGTH - 1 - 16], ev.data());
} else if (matches!(event, EventData::GtidEvent(_))
|| matches!(event, EventData::AnonymousGtidEvent(_)))
&& ev.fde().split_version() < (5, 8, 0)
{
// MySql 5.7 contains only post-header in this event
assert_eq!(&output[..GtidEvent::POST_HEADER_LENGTH], ev.data());
} else {
assert_eq!(output, ev.data());
}
ev_pos = ev_end;
}
}
Ok(())
}