47 lines
1.4 KiB
Rust
47 lines
1.4 KiB
Rust
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU 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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// Parity 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 General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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//! Adds a seventh column for node information.
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use util::kvdb::Database;
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use util::migration::{Batch, Config, Error, Migration, Progress};
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use std::sync::Arc;
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/// Copies over data for all existing columns.
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#[derive(Default)]
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pub struct ToV11(Progress);
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impl Migration for ToV11 {
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fn pre_columns(&self) -> Option<u32> { Some(6) }
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fn columns(&self) -> Option<u32> { Some(7) }
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fn version(&self) -> u32 { 11 }
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fn migrate(&mut self, source: Arc<Database>, config: &Config, dest: &mut Database, col: Option<u32>) -> Result<(), Error> {
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// just copy everything over.
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let mut batch = Batch::new(config, col);
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for (key, value) in source.iter(col) {
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self.0.tick();
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batch.insert(key.to_vec(), value.to_vec(), dest)?
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}
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batch.commit(dest)
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}
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}
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