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Introduce a function to copy and compact a database env

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This commit is contained in:
Clément Renault 2019-10-18 12:52:45 +02:00
parent 2d7db2a80f
commit 2ef51f7df9
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GPG Key ID: 92ADA4E935E71FA4
2 changed files with 15 additions and 0 deletions
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9
meilidb-core/examples/from_file.rs
View File

@ -33,6 +33,9 @@ struct IndexCommand {
#[structopt(long)]
update_group_size: Option<usize>,
#[structopt(long, parse(from_os_str))]
compact_to_path: Option<PathBuf>,
}
#[derive(Debug, StructOpt)]
@ -165,6 +168,12 @@ fn index_command(command: IndexCommand, database: Database) -> Result<(), Box<dy
println!("database created in {:.2?} at: {:?}", start.elapsed(), command.database_path);
if let Some(path) = command.compact_to_path {
let start = Instant::now();
let _file = database.copy_and_compact_to_path(&path)?;
println!("database compacted in {:.2?} at: {:?}", start.elapsed(), path);
}
Ok(())
}

6
meilidb-core/src/database.rs
View File

@ -1,8 +1,10 @@
use std::collections::hash_map::{HashMap, Entry};
use std::fs::File;
use std::path::Path;
use std::sync::{Arc, RwLock};
use std::{fs, thread};
use zlmdb::{Result as ZResult, CompactionOption};
use zlmdb::types::{Str, Unit};
use crossbeam_channel::Receiver;
use log::{debug, error};
@ -163,6 +165,10 @@ impl Database {
}
}
pub fn copy_and_compact_to_path<P: AsRef<Path>>(&self, path: P) -> ZResult<File> {
self.env.copy_to_path(path, CompactionOption::Enabled)
}
pub fn indexes_names(&self) -> MResult<Vec<String>> {
let indexes = self.indexes.read().unwrap();
Ok(indexes.keys().cloned().collect())