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use crate::backup_progress::BackupProgress;
use crate::backup_run::{IncrementalBackup, InitialBackup};
use crate::chunkid::ChunkId;
use crate::client::{BackupClient, ClientConfig};
use crate::error::ObnamError;
use crate::fsiter::FsIterator;
use crate::generation::NascentGeneration;
use bytesize::MIB;
use log::info;
use std::time::SystemTime;
use tempfile::NamedTempFile;
const SQLITE_CHUNK_SIZE: usize = MIB as usize;
pub fn backup(config: &ClientConfig) -> Result<(), ObnamError> {
let runtime = SystemTime::now();
let client = BackupClient::new(config)?;
let genlist = client.list_generations()?;
let (gen_id, file_count) = match genlist.resolve("latest") {
Err(_) => initial_backup(&config, &client)?,
Ok(old_ref) => incremental_backup(&old_ref, &config, &client)?,
};
report_stats(&runtime, file_count, &gen_id)?;
Ok(())
}
fn report_stats(runtime: &SystemTime, file_count: i64, gen_id: &ChunkId) -> Result<(), ObnamError> {
println!("status: OK");
println!("duration: {}", runtime.elapsed()?.as_secs());
println!("file-count: {}", file_count);
println!("generation-id: {}", gen_id);
Ok(())
}
fn initial_backup(
config: &ClientConfig,
client: &BackupClient,
) -> Result<(ChunkId, i64), ObnamError> {
let run = InitialBackup::new(config, &client)?;
let newtemp = NamedTempFile::new()?;
let count = {
info!("fresh backup without a previous generation");
let mut new = NascentGeneration::create(newtemp.path())?;
for root in &config.roots {
let iter = FsIterator::new(root);
new.insert_iter(iter.map(|entry| run.backup(entry)))?;
}
new.file_count()
};
let progress = BackupProgress::upload_generation();
let gen_id = client.upload_generation(newtemp.path(), SQLITE_CHUNK_SIZE)?;
progress.finish();
Ok((gen_id, count))
}
fn incremental_backup(
old_ref: &str,
config: &ClientConfig,
client: &BackupClient,
) -> Result<(ChunkId, i64), ObnamError> {
let mut run = IncrementalBackup::new(config, &client)?;
let newtemp = NamedTempFile::new()?;
let count = {
info!("incremental backup based on {}", old_ref);
let oldtemp = NamedTempFile::new()?;
let old = run.fetch_previous_generation(old_ref, oldtemp.path())?;
run.start_backup(&old)?;
let mut new = NascentGeneration::create(newtemp.path())?;
for root in &config.roots {
let iter = FsIterator::new(root);
new.insert_iter(iter.map(|entry| run.backup(entry, &old)))?;
}
new.file_count()
};
let progress = BackupProgress::upload_generation();
let gen_id = client.upload_generation(newtemp.path(), SQLITE_CHUNK_SIZE)?;
progress.finish();
Ok((gen_id, count))
}
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