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// Copyright (c) 2021 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.
use std::convert::{TryFrom, TryInto};
/// Depending on the MySQL Version that created the binlog the format is slightly different.
#[repr(u16)]
#[derive(Debug, Clone, Copy, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub enum BinlogVersion {
/// MySQL 3.23 - < 4.0.0
Version1 = 1,
/// MySQL 4.0.0 - 4.0.1
Version2,
/// MySQL 4.0.2 - < 5.0.0
Version3,
/// MySQL 5.0.0+
Version4,
}
impl From<BinlogVersion> for u16 {
fn from(x: BinlogVersion) -> Self {
x as u16
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, thiserror::Error)]
#[error("Unknown binlog version {}", _0)]
#[repr(transparent)]
pub struct UnknownBinlogVersion(pub u16);
impl From<UnknownBinlogVersion> for u16 {
fn from(x: UnknownBinlogVersion) -> Self {
x.0
}
}
impl TryFrom<u16> for BinlogVersion {
type Error = UnknownBinlogVersion;
fn try_from(value: u16) -> Result<Self, Self::Error> {
match value {
1 => Ok(Self::Version1),
2 => Ok(Self::Version2),
3 => Ok(Self::Version3),
4 => Ok(Self::Version4),
x => Err(UnknownBinlogVersion(x)),
}
}
}
/// Binlog Event Type
#[allow(non_camel_case_types)]
#[repr(u8)]
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub enum EventType {
/// Ignored event.
UNKNOWN_EVENT = 0x00,
/// A start event is the first event of a binlog for binlog-version 1 to 3.
///
/// Superseded by `FORMAT_DESCRIPTION_EVENT` since mysql v5.0.0.
START_EVENT_V3 = 0x01,
/// A `QUERY_EVENT` is created for each query that modifies the database,
/// unless the query is logged row-based.
QUERY_EVENT = 0x02,
/// A `STOP_EVENT` has no payload or post-header.
STOP_EVENT = 0x03,
/// The rotate event is added to the binlog as last event
/// to tell the reader what binlog to request next.
ROTATE_EVENT = 0x04,
INTVAR_EVENT = 0x05,
LOAD_EVENT = 0x06,
/// Ignored event.
SLAVE_EVENT = 0x07,
CREATE_FILE_EVENT = 0x08,
APPEND_BLOCK_EVENT = 0x09,
EXEC_LOAD_EVENT = 0x0a,
DELETE_FILE_EVENT = 0x0b,
NEW_LOAD_EVENT = 0x0c,
RAND_EVENT = 0x0d,
USER_VAR_EVENT = 0x0e,
/// A format description event is the first event of a binlog for binlog-version 4. It describes how the other events are layed out.
///
/// # Note
///
/// Added in MySQL 5.0.0 as replacement for START_EVENT_V3
FORMAT_DESCRIPTION_EVENT = 0x0f,
XID_EVENT = 0x10,
BEGIN_LOAD_QUERY_EVENT = 0x11,
EXECUTE_LOAD_QUERY_EVENT = 0x12,
TABLE_MAP_EVENT = 0x13,
PRE_GA_WRITE_ROWS_EVENT = 0x14,
PRE_GA_UPDATE_ROWS_EVENT = 0x15,
PRE_GA_DELETE_ROWS_EVENT = 0x16,
WRITE_ROWS_EVENT_V1 = 0x17,
UPDATE_ROWS_EVENT_V1 = 0x18,
DELETE_ROWS_EVENT_V1 = 0x19,
INCIDENT_EVENT = 0x1a,
HEARTBEAT_EVENT = 0x1b,
IGNORABLE_EVENT = 0x1c,
ROWS_QUERY_EVENT = 0x1d,
WRITE_ROWS_EVENT = 0x1e,
UPDATE_ROWS_EVENT = 0x1f,
DELETE_ROWS_EVENT = 0x20,
GTID_EVENT = 0x21,
ANONYMOUS_GTID_EVENT = 0x22,
PREVIOUS_GTIDS_EVENT = 0x23,
TRANSACTION_CONTEXT_EVENT = 0x24,
VIEW_CHANGE_EVENT = 0x25,
/// Prepared XA transaction terminal event similar to Xid.
XA_PREPARE_LOG_EVENT = 0x26,
/// Extension of UPDATE_ROWS_EVENT, allowing partial values according
/// to binlog_row_value_options.
PARTIAL_UPDATE_ROWS_EVENT = 0x27,
TRANSACTION_PAYLOAD_EVENT = 0x28,
/// Total number of known events.
ENUM_END_EVENT,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, thiserror::Error)]
#[error("Unknown event type {}", _0)]
#[repr(transparent)]
pub struct UnknownEventType(pub u8);
impl From<UnknownEventType> for u8 {
fn from(x: UnknownEventType) -> Self {
x.0
}
}
impl TryFrom<u8> for EventType {
type Error = UnknownEventType;
fn try_from(byte: u8) -> Result<Self, UnknownEventType> {
match byte {
0x00 => Ok(Self::UNKNOWN_EVENT),
0x01 => Ok(Self::START_EVENT_V3),
0x02 => Ok(Self::QUERY_EVENT),
0x03 => Ok(Self::STOP_EVENT),
0x04 => Ok(Self::ROTATE_EVENT),
0x05 => Ok(Self::INTVAR_EVENT),
0x06 => Ok(Self::LOAD_EVENT),
0x07 => Ok(Self::SLAVE_EVENT),
0x08 => Ok(Self::CREATE_FILE_EVENT),
0x09 => Ok(Self::APPEND_BLOCK_EVENT),
0x0a => Ok(Self::EXEC_LOAD_EVENT),
0x0b => Ok(Self::DELETE_FILE_EVENT),
0x0c => Ok(Self::NEW_LOAD_EVENT),
0x0d => Ok(Self::RAND_EVENT),
0x0e => Ok(Self::USER_VAR_EVENT),
0x0f => Ok(Self::FORMAT_DESCRIPTION_EVENT),
0x10 => Ok(Self::XID_EVENT),
0x11 => Ok(Self::BEGIN_LOAD_QUERY_EVENT),
0x12 => Ok(Self::EXECUTE_LOAD_QUERY_EVENT),
0x13 => Ok(Self::TABLE_MAP_EVENT),
0x14 => Ok(Self::PRE_GA_WRITE_ROWS_EVENT),
0x15 => Ok(Self::PRE_GA_UPDATE_ROWS_EVENT),
0x16 => Ok(Self::PRE_GA_DELETE_ROWS_EVENT),
0x17 => Ok(Self::WRITE_ROWS_EVENT_V1),
0x18 => Ok(Self::UPDATE_ROWS_EVENT_V1),
0x19 => Ok(Self::DELETE_ROWS_EVENT_V1),
0x1a => Ok(Self::INCIDENT_EVENT),
0x1b => Ok(Self::HEARTBEAT_EVENT),
0x1c => Ok(Self::IGNORABLE_EVENT),
0x1d => Ok(Self::ROWS_QUERY_EVENT),
0x1e => Ok(Self::WRITE_ROWS_EVENT),
0x1f => Ok(Self::UPDATE_ROWS_EVENT),
0x20 => Ok(Self::DELETE_ROWS_EVENT),
0x21 => Ok(Self::GTID_EVENT),
0x22 => Ok(Self::ANONYMOUS_GTID_EVENT),
0x23 => Ok(Self::PREVIOUS_GTIDS_EVENT),
0x24 => Ok(Self::TRANSACTION_CONTEXT_EVENT),
0x25 => Ok(Self::VIEW_CHANGE_EVENT),
0x26 => Ok(Self::XA_PREPARE_LOG_EVENT),
0x27 => Ok(Self::PARTIAL_UPDATE_ROWS_EVENT),
0x28 => Ok(Self::TRANSACTION_PAYLOAD_EVENT),
x => Err(UnknownEventType(x)),
}
}
}
my_bitflags! {
EventFlags,
#[error("Unknown flags in the raw value of EventFlags (raw={:b})", _0)]
UnknownEventFlags,
u16,
/// Binlog Event Flags
#[derive(PartialEq, Eq, Hash, Debug, Clone, Copy)]
pub struct EventFlags: u16 {
/// Gets unset in the `FORMAT_DESCRIPTION_EVENT`
/// when the file gets closed to detect broken binlogs.
const LOG_EVENT_BINLOG_IN_USE_F = 0x0001;
/// Unused.
const LOG_EVENT_FORCED_ROTATE_F = 0x0002;
/// event is thread specific (`CREATE TEMPORARY TABLE` ...).
const LOG_EVENT_THREAD_SPECIFIC_F = 0x0004;
/// Event doesn't need default database to be updated (`CREATE DATABASE`, ...).
const LOG_EVENT_SUPPRESS_USE_F = 0x0008;
/// Unused.
const LOG_EVENT_UPDATE_TABLE_MAP_VERSION_F = 0x0010;
/// Event is created by the slaves SQL-thread and shouldn't update the master-log pos.
const LOG_EVENT_ARTIFICIAL_F = 0x0020;
/// Event is created by the slaves IO-thread when written to the relay log.
const LOG_EVENT_RELAY_LOG_F = 0x0040;
/// Setting this flag will mark an event as Ignorable.
const LOG_EVENT_IGNORABLE_F = 0x0080;
/// Events with this flag are not filtered (e.g. on the current
/// database) and are always written to the binary log regardless of
/// filters.
const LOG_EVENT_NO_FILTER_F = 0x0100;
/// MTS: group of events can be marked to force its execution in isolation from
/// any other Workers.
const LOG_EVENT_MTS_ISOLATE_F = 0x0200;
}
}
/// Enumeration spcifying checksum algorithm used to encode a binary log event.
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
#[allow(non_camel_case_types)]
#[repr(u8)]
pub enum BinlogChecksumAlg {
/// Events are without checksum though its generator is checksum-capable New Master (NM).
BINLOG_CHECKSUM_ALG_OFF = 0,
/// CRC32 of zlib algorithm
BINLOG_CHECKSUM_ALG_CRC32 = 1,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, thiserror::Error)]
#[error("Unknown checksum algorithm {}", _0)]
#[repr(transparent)]
pub struct UnknownChecksumAlg(pub u8);
impl From<UnknownChecksumAlg> for u8 {
fn from(x: UnknownChecksumAlg) -> Self {
x.0
}
}
impl TryFrom<u8> for BinlogChecksumAlg {
type Error = UnknownChecksumAlg;
fn try_from(value: u8) -> Result<Self, Self::Error> {
match value {
0 => Ok(Self::BINLOG_CHECKSUM_ALG_OFF),
1 => Ok(Self::BINLOG_CHECKSUM_ALG_CRC32),
x => Err(UnknownChecksumAlg(x)),
}
}
}
/// Binlog query event status vars keys.
#[repr(u8)]
#[allow(non_camel_case_types)]
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub enum StatusVarKey {
/// Contains `Flags2` flags.
Flags2 = 0,
/// Contains `SqlMode` flags.
SqlMode,
/// Contains values in the following order:
///
/// * 1 byte `length`,
/// * `length` bytes catalog,
/// * NULL byte.
///
/// `length + 2` bytes in total.
Catalog,
/// Contains values in the following order:
///
/// * 2 bytes unsigned little-endian auto_increment_increment,
/// * 2 bytes unsigned little-endian auto_increment_offset.
///
/// Four bytes in total.
AutoIncrement,
/// Contains values in the following order:
///
/// * 2 bytes unsigned little-endian character_set_client,
/// * 2 bytes unsigned little-endian collation_connection,
/// * 2 bytes unsigned little-endian collation_server.
///
/// Six bytes in total.
Charset,
/// Contains values in the following order:
///
/// * 1 byte `length`,
/// * `length` bytes timezone.
///
/// `length + 1` bytes in total.
TimeZone,
/// Contains values in the following order:
///
/// * 1 byte `length`,
/// * `length` bytes catalog.
///
/// `length + 1` bytes in total.
CatalogNz,
/// Contains 2 bytes code identifying a table of month and day names.
///
/// The mapping from codes to languages is defined in sql_locale.cc.
LcTimeNames,
/// Contains 2 bytes value of the collation_database system variable.
CharsetDatabase,
/// Contains 8 bytes value of the table map that is to be updated
/// by the multi-table update query statement.
TableMapForUpdate,
/// Contains 4 bytes bitfield.
MasterDataWritten,
/// Contains values in the following order:
///
/// * 1 byte `user_length`,
/// * `user_length` bytes user,
/// * 1 byte `host_length`,
/// * `host_length` bytes host.
///
/// `user_length + host_length + 2` bytes in total.
Invoker,
/// Contains values in the following order:
///
/// * 1 byte `count`,
/// * `count` times:
/// * null-terminated db_name.
///
/// `1 + db_names_lens.sum()` bytes in total.
UpdatedDbNames,
/// Contains 3 bytes unsigned little-endian integer.
Microseconds,
CommitTs,
CommitTs2,
/// Contains 1 byte boolean.
ExplicitDefaultsForTimestamp,
/// Contains 8 bytes unsigned little-endian integer carrying xid info of 2pc-aware
/// (recoverable) DDL queries.
DdlLoggedWithXid,
/// Contains 2 bytes unsigned little-endian integer carrying
/// the default collation for the utf8mb4 character set.
DefaultCollationForUtf8mb4,
/// Contains 1 byte value.
SqlRequirePrimaryKey,
/// Contains 1 byte value.
DefaultTableEncryption,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, thiserror::Error)]
#[error("Unknown status var key {}", _0)]
#[repr(transparent)]
pub struct UnknownStatusVarKey(pub u8);
impl TryFrom<u8> for StatusVarKey {
type Error = UnknownStatusVarKey;
fn try_from(value: u8) -> Result<Self, Self::Error> {
match value {
0 => Ok(StatusVarKey::Flags2),
1 => Ok(StatusVarKey::SqlMode),
2 => Ok(StatusVarKey::Catalog),
3 => Ok(StatusVarKey::AutoIncrement),
4 => Ok(StatusVarKey::Charset),
5 => Ok(StatusVarKey::TimeZone),
6 => Ok(StatusVarKey::CatalogNz),
7 => Ok(StatusVarKey::LcTimeNames),
8 => Ok(StatusVarKey::CharsetDatabase),
9 => Ok(StatusVarKey::TableMapForUpdate),
10 => Ok(StatusVarKey::MasterDataWritten),
11 => Ok(StatusVarKey::Invoker),
12 => Ok(StatusVarKey::UpdatedDbNames),
13 => Ok(StatusVarKey::Microseconds),
14 => Ok(StatusVarKey::CommitTs),
15 => Ok(StatusVarKey::CommitTs2),
16 => Ok(StatusVarKey::ExplicitDefaultsForTimestamp),
17 => Ok(StatusVarKey::DdlLoggedWithXid),
18 => Ok(StatusVarKey::DefaultCollationForUtf8mb4),
19 => Ok(StatusVarKey::SqlRequirePrimaryKey),
20 => Ok(StatusVarKey::DefaultTableEncryption),
x => Err(UnknownStatusVarKey(x)),
}
}
}
my_bitflags! {
SemiSyncFlags,
#[error("Unknown flags in the raw value of SemiSyncFlags (raw={:b})", _0)]
UnknownSemiSyncFlags,
u8,
/// Semi-sync binlog flags.
#[derive(PartialEq, Eq, Hash, Debug, Clone, Copy)]
pub struct SemiSyncFlags: u8 {
// If the SEMI_SYNC_ACK_REQ flag is set the master waits for a Semi Sync ACK packet
// from the slave before it sends the next event.
const SEMI_SYNC_ACK_REQ = 0x01;
}
}
/// Variants of this enum describe how LOAD DATA handles duplicates.
#[repr(u8)]
#[allow(non_camel_case_types)]
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub enum LoadDuplicateHandling {
LOAD_DUP_ERROR = 0,
LOAD_DUP_IGNORE,
LOAD_DUP_REPLACE,
}
impl From<LoadDuplicateHandling> for u8 {
fn from(x: LoadDuplicateHandling) -> Self {
x as u8
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, thiserror::Error)]
#[error("Unknown duplicate handling variant {}", _0)]
#[repr(transparent)]
pub struct UnknownDuplicateHandling(pub u8);
impl From<UnknownDuplicateHandling> for u8 {
fn from(x: UnknownDuplicateHandling) -> Self {
x.0
}
}
impl TryFrom<u8> for LoadDuplicateHandling {
type Error = UnknownDuplicateHandling;
fn try_from(value: u8) -> Result<Self, Self::Error> {
match value {
0 => Ok(Self::LOAD_DUP_ERROR),
1 => Ok(Self::LOAD_DUP_IGNORE),
2 => Ok(Self::LOAD_DUP_REPLACE),
x => Err(UnknownDuplicateHandling(x)),
}
}
}
/// Enumerates types of optional metadata fields.
#[repr(u8)]
#[allow(non_camel_case_types)]
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub enum OptionalMetadataFieldType {
/// UNSIGNED flag of numeric columns.
///
/// # Value format
///
/// For each numeric column, a bit indicates whether the numeric colunm has unsigned flag.
/// `1` means it is unsigned. The number of bytes needed for this
/// is `int((column_count + 7) / 8)`.
SIGNEDNESS = 1,
/// Character set of string columns.
///
/// This field should not appear with `COLUMN_CHARSET`.
///
/// # Value format
///
/// * default charset as a lenght-encoded integer,
/// * then for every character column which charset isn't default:
/// * column index as a lenght-encoded integer,
/// * column charset as a length-encoded integer.
///
/// The order is the same as the order of `column_type` field.
DEFAULT_CHARSET,
/// Character set of string columns.
///
/// This field should not appear with `DEFAULT_CHARSET`.
///
/// # Value format
///
/// * for every character column:
/// * column charset as a length-encoded integer.
///
/// The order is the same as the order of `column_type` field.
COLUMN_CHARSET,
/// Collumn name of columns (included if `binlog_row_metadata=FULL`).
///
/// # Value format
///
/// * for every column:
/// * column name as a length-encoded string.
///
/// The order is the same as the order of `column_type` field.
COLUMN_NAME,
/// Name of each variant in a SET columns.
///
/// # Value format
///
/// * for every SET column:
/// * number of variants as a length-encoded integer,
/// * for each variant:
/// * name of a variant as a length-encoded string.
///
/// The order is the same as the order of `column_type` field.
SET_STR_VALUE,
/// Name of each variant in an ENUM columns.
///
/// # Value format
///
/// * for every ENUM column:
/// * number of variants as a length-encoded integer,
/// * for each variant:
/// * name of a variant as a length-encoded string.
///
/// The order is the same as the order of `column_type` field.
ENUM_STR_VALUE,
/// Real type of geometry columns.
///
/// # Value format
///
/// * for every geometry column:
/// * geometry type as a length-encoded integer.
///
/// The order is the same as the order of `column_type` field.
GEOMETRY_TYPE,
/// Primary key without prefix (included if `binlog_row_metadata=FULL`).
///
/// This field should not appear with `PRIMARY_KEY_WITH_PREFIX`.
///
/// # Value format
///
/// * for every PK index column:
/// * column index as a length-encoded integer.
///
/// The order is the same as the order of `column_type` field.
SIMPLE_PRIMARY_KEY,
/// Primary key with prefix (included if `binlog_row_metadata=FULL`).
///
/// This field should not appear with `SIMPLE_PRIMARY_KEY`.
///
/// # Value format
///
/// * for every PK index column:
/// * column index as a length-encoded integer,
/// * prefix length as a length-encoded integer
///
/// The order is the same as the order of `column_type` field.
///
/// ## Note
///
/// * prefix length is a character length, i.e. prefix byte length divided by the maximum
/// length of a character in the correspoding charset;
/// * prefix length `0` means that the whole column value is used.
PRIMARY_KEY_WITH_PREFIX,
/// Character set of enum and set columns.
///
/// This field should not appear with `ENUM_AND_SET_COLUMN_CHARSET`.
///
/// # Value format
///
/// * default charset as a lenght-encoded integer,
/// * then for every SET or ENUM column which charset isn't default:
/// * column index as a lenght-encoded integer,
/// * column charset as a length-encoded integer.
///
/// The order is the same as the order of `column_type` field.
ENUM_AND_SET_DEFAULT_CHARSET,
/// Character set of enum and set columns.
///
/// This field should not appear with `ENUM_AND_SET_DEFAULT_CHARSET`.
///
/// # Value format
///
/// * for every SET or ENUM column:
/// * column charset as a length-encoded integer.
///
/// The order is the same as the order of `column_type` field.
ENUM_AND_SET_COLUMN_CHARSET,
/// A flag that indicates column visibility attribute.
COLUMN_VISIBILITY,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, thiserror::Error)]
#[error("Unknown optional metadata field type {}", _0)]
pub struct UnknownOptionalMetadataFieldType(pub u8);
impl From<UnknownOptionalMetadataFieldType> for u8 {
fn from(x: UnknownOptionalMetadataFieldType) -> Self {
x.0
}
}
impl TryFrom<u8> for OptionalMetadataFieldType {
type Error = UnknownOptionalMetadataFieldType;
fn try_from(value: u8) -> Result<Self, Self::Error> {
match value {
1 => Ok(Self::SIGNEDNESS),
2 => Ok(Self::DEFAULT_CHARSET),
3 => Ok(Self::COLUMN_CHARSET),
4 => Ok(Self::COLUMN_NAME),
5 => Ok(Self::SET_STR_VALUE),
6 => Ok(Self::ENUM_STR_VALUE),
7 => Ok(Self::GEOMETRY_TYPE),
8 => Ok(Self::SIMPLE_PRIMARY_KEY),
9 => Ok(Self::PRIMARY_KEY_WITH_PREFIX),
10 => Ok(Self::ENUM_AND_SET_DEFAULT_CHARSET),
11 => Ok(Self::ENUM_AND_SET_COLUMN_CHARSET),
12 => Ok(Self::COLUMN_VISIBILITY),
x => Err(UnknownOptionalMetadataFieldType(x)),
}
}
}
/// Type of an incident event.
#[repr(u16)]
#[allow(non_camel_case_types)]
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub enum IncidentType {
/// No incident.
INCIDENT_NONE = 0,
/// There are possibly lost events in the replication stream.
INCIDENT_LOST_EVENTS = 1,
}
impl From<IncidentType> for u16 {
fn from(x: IncidentType) -> Self {
x as u16
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, thiserror::Error)]
#[error("Unknown item incident type {}", _0)]
#[repr(transparent)]
pub struct UnknownIncidentType(pub u16);
impl From<UnknownIncidentType> for u16 {
fn from(x: UnknownIncidentType) -> Self {
x.0
}
}
impl TryFrom<u16> for IncidentType {
type Error = UnknownIncidentType;
fn try_from(value: u16) -> Result<Self, Self::Error> {
match value {
0 => Ok(Self::INCIDENT_NONE),
1 => Ok(Self::INCIDENT_LOST_EVENTS),
x => Err(UnknownIncidentType(x)),
}
}
}
/// Type of an `InvarEvent`.
#[repr(u8)]
#[allow(non_camel_case_types)]
#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
pub enum IntvarEventType {
INVALID_INT_EVENT,
/// Indicates the value to use for the `LAST_INSERT_ID()` function in the next statement.
LAST_INSERT_ID_EVENT,
/// Indicates the value to use for an `AUTO_INCREMENT` column in the next statement.
INSERT_ID_EVENT,
}
impl From<IntvarEventType> for u8 {
fn from(x: IntvarEventType) -> Self {
x as u8
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, thiserror::Error)]
#[error("Unknown intvar event type {}", _0)]
#[repr(transparent)]
pub struct UnknownIntvarEventType(pub u8);
impl From<UnknownIntvarEventType> for u8 {
fn from(x: UnknownIntvarEventType) -> Self {
x.0
}
}
impl TryFrom<u8> for IntvarEventType {
type Error = UnknownIntvarEventType;
fn try_from(value: u8) -> Result<Self, Self::Error> {
match value {
0 => Ok(Self::INVALID_INT_EVENT),
1 => Ok(Self::LAST_INSERT_ID_EVENT),
2 => Ok(Self::INSERT_ID_EVENT),
x => Err(UnknownIntvarEventType(x)),
}
}
}
my_bitflags! {
GtidFlags,
#[error("Unknown flags in the raw value of GtidFlags (raw={:b})", _0)]
UnknownGtidFlags,
u8,
/// Gtid event flags.
#[derive(PartialEq, Eq, Hash, Debug, Clone, Copy)]
pub struct GtidFlags: u8 {
/// Transaction may have changes logged with SBR.
///
/// In 5.6, 5.7.0-5.7.18, and 8.0.0-8.0.1, this flag is always set.
/// Starting in 5.7.19 and 8.0.2, this flag is cleared if the transaction
/// only contains row events. It is set if any part of the transaction is
/// written in statement format.
const MAY_HAVE_SBR = 0x01;
}
}
/// Group number of a Gtid event.
///
/// Should be between `MIN_GNO` and `MAX_GNO` for GtidEvent and `0` for AnonymousGtidEvent.
#[repr(transparent)]
#[derive(Debug, Clone, Copy, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct Gno(u64);
impl Gno {
pub const MIN_GNO: u64 = 1;
pub const MAX_GNO: u64 = i64::MAX as u64;
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, thiserror::Error)]
#[error(
"Group number {} is out of range [{}, {}]",
_0,
Gno::MIN_GNO,
Gno::MAX_GNO
)]
#[repr(transparent)]
pub struct InvalidGno(pub u64);
impl From<InvalidGno> for u64 {
fn from(x: InvalidGno) -> Self {
x.0
}
}
impl TryFrom<u64> for Gno {
type Error = InvalidGno;
fn try_from(value: u64) -> Result<Self, Self::Error> {
if value == 0 || (Self::MIN_GNO..Self::MAX_GNO).contains(&value) {
Ok(Self(value))
} else {
Err(InvalidGno(value))
}
}
}
my_bitflags! {
RowsEventFlags,
#[error("Unknown flags in the raw value of RowsEventFlags (raw={:b})", _0)]
UnknownRowsEventFlags,
u16,
/// Rows event flags.
#[derive(PartialEq, Eq, Hash, Debug, Clone, Copy)]
pub struct RowsEventFlags: u16 {
/// Last event of a statement.
const STMT_END = 0x0001;
/// No foreign key checks.
const NO_FOREIGN_KEY_CHECKS = 0x0002;
/// No unique key checks.
const RELAXED_UNIQUE_CHECKS = 0x0004;
/// Indicates that rows in this event are complete,
/// that is contain values for all columns of the table.
const COMPLETE_ROWS = 0x0008;
}
}
my_bitflags! {
UserVarFlags,
#[error("Unknown flags in the raw value of UserVarFlags (raw={:b})", _0)]
UnknownUserVarFlags,
u8,
/// Flags of a user variable.
#[derive(PartialEq, Eq, Hash, Debug, Clone, Copy)]
pub struct UserVarFlags: u8 {
const UNSIGNED = 0x01;
}
}
/// The on-the-wire fields for Transaction_payload
#[allow(non_camel_case_types)]
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
#[repr(u8)]
pub enum TransactionPayloadFields {
// Marks the end of the payload header.
OTW_PAYLOAD_HEADER_END_MARK = 0,
// The payload field
OTW_PAYLOAD_SIZE_FIELD = 1,
// The compression type field
OTW_PAYLOAD_COMPRESSION_TYPE_FIELD = 2,
// The uncompressed size field
OTW_PAYLOAD_UNCOMPRESSED_SIZE_FIELD = 3,
// Other fields are appended here.
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, thiserror::Error)]
#[error("Unknown TransactionPayloadFields operation {}", _0)]
#[repr(transparent)]
pub struct UnknownTransactionPayloadFields(pub u8);
impl TryFrom<u8> for TransactionPayloadFields {
type Error = UnknownTransactionPayloadFields;
fn try_from(value: u8) -> Result<Self, Self::Error> {
match value {
0 => Ok(Self::OTW_PAYLOAD_HEADER_END_MARK),
1 => Ok(Self::OTW_PAYLOAD_SIZE_FIELD),
2 => Ok(Self::OTW_PAYLOAD_COMPRESSION_TYPE_FIELD),
3 => Ok(Self::OTW_PAYLOAD_UNCOMPRESSED_SIZE_FIELD),
x => Err(UnknownTransactionPayloadFields(x)),
}
}
}
impl From<TransactionPayloadFields> for u8 {
fn from(x: TransactionPayloadFields) -> Self {
x as u8
}
}
impl From<TransactionPayloadFields> for u64 {
fn from(x: TransactionPayloadFields) -> Self {
x as u64
}
}
impl TryFrom<u64> for TransactionPayloadFields {
type Error = UnknownTransactionPayloadFields;
fn try_from(value: u64) -> Result<Self, Self::Error> {
match value {
0 => Ok(Self::OTW_PAYLOAD_HEADER_END_MARK),
1 => Ok(Self::OTW_PAYLOAD_SIZE_FIELD),
2 => Ok(Self::OTW_PAYLOAD_COMPRESSION_TYPE_FIELD),
3 => Ok(Self::OTW_PAYLOAD_UNCOMPRESSED_SIZE_FIELD),
x => Err(UnknownTransactionPayloadFields(x.try_into().unwrap())),
}
}
}
/// The supported compression algorithms for Transaction_payload
#[allow(non_camel_case_types)]
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
#[repr(u8)]
pub enum TransactionPayloadCompressionType {
// ZSTD compression.
ZSTD = 0,
// No compression.
NONE = 255,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, thiserror::Error)]
#[error("Unknown TransactionPayloadCompressionType {}", _0)]
#[repr(transparent)]
pub struct UnknownTransactionPayloadCompressionType(pub u8);
impl TryFrom<u8> for TransactionPayloadCompressionType {
type Error = UnknownTransactionPayloadCompressionType;
fn try_from(value: u8) -> Result<Self, Self::Error> {
match value {
0 => Ok(Self::ZSTD),
255 => Ok(Self::NONE),
x => Err(UnknownTransactionPayloadCompressionType(x)),
}
}
}
impl TryFrom<u64> for TransactionPayloadCompressionType {
type Error = UnknownTransactionPayloadCompressionType;
fn try_from(value: u64) -> Result<Self, Self::Error> {
match value {
0 => Ok(Self::ZSTD),
255 => Ok(Self::NONE),
x => Err(UnknownTransactionPayloadCompressionType(
x.try_into().unwrap(),
)),
}
}
}