53 lines
1.5 KiB
Go
53 lines
1.5 KiB
Go
/*
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Copyright 2022 Alibaba Group Holding Limited.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package event
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import (
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"github.com/alibaba/polardbx-operator/pkg/binlogtool/binlog/layout"
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"github.com/alibaba/polardbx-operator/pkg/binlogtool/binlog/str"
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)
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type UserVarEvent struct {
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Name str.Str `json:"name,omitempty"`
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IsNull bool `json:"is_null,omitempty"`
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Type byte `json:"type,omitempty"`
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Charset uint32 `json:"charset,omitempty"`
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Value str.Str `json:"value,omitempty"`
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}
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func (e *UserVarEvent) Layout(version uint32, code byte, fde *FormatDescriptionEvent) *layout.Layout {
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var nameLen uint32
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return layout.Decl(
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layout.Number(&nameLen),
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layout.Bytes(&nameLen, &e.Name),
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layout.Bool(&e.IsNull),
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layout.Area(layout.Infinite(), func(data []byte) (int, error) {
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if !e.IsNull {
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var valueLen uint32
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return layout.Decl(
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layout.Number(&e.Type),
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layout.Number(&e.Charset),
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layout.Number(&valueLen),
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layout.Bytes(&valueLen, &e.Value),
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).FromBlock(data)
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}
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return 0, nil
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}),
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)
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}
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