51 lines
1.5 KiB
Go
51 lines
1.5 KiB
Go
// VulcanizeDB
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// Copyright © 2019 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package fetcher
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import (
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"github.com/vulcanize/vulcanizedb/libraries/shared/storage/utils"
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"github.com/vulcanize/vulcanizedb/pkg/fs"
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"strings"
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)
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type IStorageFetcher interface {
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FetchStorageDiffs(chan<- utils.StorageDiffRow, chan<- error)
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}
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type CsvTailStorageFetcher struct {
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tailer fs.Tailer
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}
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func NewCsvTailStorageFetcher(tailer fs.Tailer) CsvTailStorageFetcher {
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return CsvTailStorageFetcher{tailer: tailer}
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}
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func (storageFetcher CsvTailStorageFetcher) FetchStorageDiffs(out chan<- utils.StorageDiffRow, errs chan<- error) {
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t, tailErr := storageFetcher.tailer.Tail()
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if tailErr != nil {
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errs <- tailErr
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}
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for line := range t.Lines {
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row, parseErr := utils.FromStrings(strings.Split(line.Text, ","))
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if parseErr != nil {
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errs <- parseErr
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} else {
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out <- row
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}
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}
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}
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