/
plain_dump_pipeline.go
64 lines (55 loc) · 1.7 KB
/
plain_dump_pipeline.go
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// Copyright 2023 Greenmask
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package dumpers
import (
"context"
"fmt"
"io"
"github.com/greenmaskio/greenmask/internal/db/postgres/entries"
"github.com/greenmaskio/greenmask/internal/db/postgres/pgcopy"
)
type PlainDumpPipeline struct {
w io.Writer
line uint64
table *entries.Table
}
func NewPlainDumpPipeline(table *entries.Table, w io.Writer) *PlainDumpPipeline {
return &PlainDumpPipeline{
table: table,
w: w,
}
}
func (pdp *PlainDumpPipeline) Init(ctx context.Context) error {
return nil
}
func (pdp *PlainDumpPipeline) Dump(ctx context.Context, data []byte) (err error) {
pdp.line++
if _, err := pdp.w.Write(data); err != nil {
return NewDumpError(pdp.table.Schema, pdp.table.Name, pdp.line, err)
}
return nil
}
func (pdp *PlainDumpPipeline) Done(ctx context.Context) error {
return nil
}
func (pdp *PlainDumpPipeline) CompleteDump() (err error) {
res := make([]byte, 0, 4)
res = append(res, pgcopy.DefaultCopyTerminationSeq...)
res = append(res, '\n', '\n')
_, err = pdp.w.Write(res)
if err != nil {
return NewDumpError(pdp.table.Schema, pdp.table.Name, pdp.line, fmt.Errorf("error end of dump symbols: %w", err))
}
return nil
}