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/* Copyright (C) 2021 Nicolas Peugnet <n.peugnet@free.fr>
This file is part of dna-backup.
dna-backup is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
dna-backup is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with dna-backup. If not, see <https://www.gnu.org/licenses/>. */
package repo
import (
"io"
"github.com/n-peugnet/dna-backup/export"
"github.com/n-peugnet/dna-backup/logger"
"github.com/n-peugnet/dna-backup/utils"
)
func (r *Repo) Export(exporter export.Exporter) {
r.Init()
chunks := r.loadChunks(r.versions)
for i := range r.versions {
var err error
end := make(chan bool)
input := exporter.ExportVersion(end)
go exportChunks(chunks[i], r.chunkWriteWrapper, input.Chunks)
readDelta(r.versions[i], recipeName, utils.NopReadWrapper, func(rc io.ReadCloser) {
_, err = io.Copy(input.Recipe, rc)
if err != nil {
logger.Error("load recipe ", err)
}
if err = input.Recipe.Close(); err != nil {
logger.Error("export recipe ", err)
}
})
readDelta(r.versions[i], filesName, utils.NopReadWrapper, func(rc io.ReadCloser) {
_, err = io.Copy(input.Files, rc)
if err != nil {
logger.Error("load files ", err)
}
if err = input.Files.Close(); err != nil {
logger.Error("export files ", err)
}
})
<-end
}
}
func exportChunks(chunks []IdentifiedChunk, wrapper utils.WriteWrapper, input io.WriteCloser) {
if len(chunks) > 0 {
compressed := wrapper(input)
for _, c := range chunks {
_, err := io.Copy(compressed, c.Reader())
if err != nil {
logger.Error(err)
}
}
compressed.Close()
}
input.Close()
}
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