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use crate::client::{BackupClient, ClientConfig};
use crate::fsiter::FsIterator;
use crate::generation::Generation;
use indicatif::{ProgressBar, ProgressStyle};
use std::path::Path;
use tempfile::NamedTempFile;
const GUESS_FILE_COUNT: u64 = 0;
pub fn backup(config: &Path, buffer_size: usize) -> anyhow::Result<()> {
let config = ClientConfig::read_config(config)?;
let client = BackupClient::new(&config.server_url)?;
// Create a named temporary file. We don't meed the open file
// handle, so we discard that.
let dbname = {
let temp = NamedTempFile::new()?;
let (_, dbname) = temp.keep()?;
dbname
};
{
// Create the SQLite database using the named temporary file.
// The fetching is in its own block so that the file handles
// get closed and data flushed to disk.
let mut gen = Generation::create(&dbname)?;
let progress = create_progress_bar(GUESS_FILE_COUNT);
progress.enable_steady_tick(100);
gen.insert_iter(FsIterator::new(&config.root).map(|entry| {
progress.inc(1);
match entry {
Err(err) => Err(err),
Ok(entry) => {
progress.set_message(&format!("{}", entry.path().display()));
client.upload_filesystem_entry(entry, buffer_size)
}
}
}))?;
progress.set_length(gen.file_count());
progress.finish();
println!("file count: {}", gen.file_count());
}
// Upload the SQLite file, i.e., the named temporary file, which
// still exists, since we persisted it above.
let gen_id = client.upload_generation(&dbname, buffer_size)?;
println!("gen id: {}", gen_id);
// Delete the temporary file.
std::fs::remove_file(&dbname)?;
Ok(())
}
fn create_progress_bar(file_count: u64) -> ProgressBar {
let progress = ProgressBar::new(file_count);
let parts = vec![
"{wide_bar}",
"elapsed: {elapsed}",
"files: {pos}/{len}",
"current: {wide_msg}",
"{spinner}",
];
progress.set_style(ProgressStyle::default_bar().template(&parts.join("\n")));
progress
}
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