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#![allow(clippy::integer_arithmetic)]
use {
console::Emoji,
indicatif::{ProgressBar, ProgressStyle},
log::*,
solana_runtime::{
snapshot_package::SnapshotType,
snapshot_utils::{self, ArchiveFormat},
},
solana_sdk::{clock::Slot, genesis_config::DEFAULT_GENESIS_ARCHIVE, hash::Hash},
std::{
fs::{self, File},
io::{self, Read},
net::SocketAddr,
path::{Path, PathBuf},
time::{Duration, Instant},
},
};
static TRUCK: Emoji = Emoji("🚚 ", "");
static SPARKLE: Emoji = Emoji("✨ ", "");
fn new_spinner_progress_bar() -> ProgressBar {
let progress_bar = ProgressBar::new(42);
progress_bar
.set_style(ProgressStyle::default_spinner().template("{spinner:.green} {wide_msg}"));
progress_bar.enable_steady_tick(100);
progress_bar
}
#[derive(Debug)]
pub struct DownloadProgressRecord {
pub elapsed_time: Duration,
pub last_elapsed_time: Duration,
pub last_throughput: f32,
pub total_throughput: f32,
pub total_bytes: usize,
pub current_bytes: usize,
pub percentage_done: f32,
pub estimated_remaining_time: f32,
pub notification_count: u64,
}
type DownloadProgressCallback<'a> = Box<dyn FnMut(&DownloadProgressRecord) -> bool + 'a>;
type DownloadProgressCallbackOption<'a> = Option<DownloadProgressCallback<'a>>;
pub fn download_file<'a, 'b>(
url: &str,
destination_file: &Path,
use_progress_bar: bool,
progress_notify_callback: &'a mut DownloadProgressCallbackOption<'b>,
) -> Result<(), String> {
if destination_file.is_file() {
return Err(format!("{:?} already exists", destination_file));
}
let download_start = Instant::now();
fs::create_dir_all(destination_file.parent().expect("parent"))
.map_err(|err| err.to_string())?;
let mut temp_destination_file = destination_file.to_path_buf();
temp_destination_file.set_file_name(format!(
"tmp-{}",
destination_file
.file_name()
.expect("file_name")
.to_str()
.expect("to_str")
));
let progress_bar = new_spinner_progress_bar();
if use_progress_bar {
progress_bar.set_message(format!("{}Downloading {}...", TRUCK, url));
}
let response = reqwest::blocking::Client::new()
.get(url)
.send()
.and_then(|response| response.error_for_status())
.map_err(|err| {
progress_bar.finish_and_clear();
err.to_string()
})?;
let download_size = {
response
.headers()
.get(reqwest::header::CONTENT_LENGTH)
.and_then(|content_length| content_length.to_str().ok())
.and_then(|content_length| content_length.parse().ok())
.unwrap_or(0)
};
if use_progress_bar {
progress_bar.set_length(download_size);
progress_bar.set_style(
ProgressStyle::default_bar()
.template(
"{spinner:.green}{msg_wide}[{bar:40.cyan/blue}] {bytes}/{total_bytes} ({eta})",
)
.progress_chars("=> "),
);
progress_bar.set_message(format!("{}Downloading~ {}", TRUCK, url));
} else {
info!("Downloading {} bytes from {}", download_size, url);
}
struct DownloadProgress<'e, 'f, R> {
progress_bar: ProgressBar,
response: R,
last_print: Instant,
current_bytes: usize,
last_print_bytes: usize,
download_size: f32,
use_progress_bar: bool,
start_time: Instant,
callback: &'f mut DownloadProgressCallbackOption<'e>,
notification_count: u64,
}
impl<'e, 'f, R: Read> Read for DownloadProgress<'e, 'f, R> {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
let n = self.response.read(buf)?;
self.current_bytes += n;
let total_bytes_f32 = self.current_bytes as f32;
let diff_bytes_f32 = (self.current_bytes - self.last_print_bytes) as f32;
let last_throughput = diff_bytes_f32 / self.last_print.elapsed().as_secs_f32();
let estimated_remaining_time = if last_throughput > 0_f32 {
(self.download_size - self.current_bytes as f32) / last_throughput
} else {
f32::MAX
};
let mut progress_record = DownloadProgressRecord {
elapsed_time: self.start_time.elapsed(),
last_elapsed_time: self.last_print.elapsed(),
last_throughput,
total_throughput: self.current_bytes as f32
/ self.start_time.elapsed().as_secs_f32(),
total_bytes: self.download_size as usize,
current_bytes: self.current_bytes,
percentage_done: 100f32 * (total_bytes_f32 / self.download_size),
estimated_remaining_time,
notification_count: self.notification_count,
};
let mut to_update_progress = false;
if progress_record.last_elapsed_time.as_secs() > 5 {
self.last_print = Instant::now();
self.last_print_bytes = self.current_bytes;
to_update_progress = true;
self.notification_count += 1;
progress_record.notification_count = self.notification_count
}
if self.use_progress_bar {
self.progress_bar.inc(n as u64);
} else if to_update_progress {
info!(
"downloaded {} bytes {:.1}% {:.1} bytes/s",
self.current_bytes,
progress_record.percentage_done,
progress_record.last_throughput,
);
}
if let Some(callback) = self.callback {
if to_update_progress && !callback(&progress_record) {
info!("Download is aborted by the caller");
return Err(io::Error::new(
io::ErrorKind::Other,
"Download is aborted by the caller",
));
}
}
Ok(n)
}
}
let mut source = DownloadProgress::<'b, 'a> {
progress_bar,
response,
last_print: Instant::now(),
current_bytes: 0,
last_print_bytes: 0,
download_size: (download_size as f32).max(1f32),
use_progress_bar,
start_time: Instant::now(),
callback: progress_notify_callback,
notification_count: 0,
};
File::create(&temp_destination_file)
.and_then(|mut file| std::io::copy(&mut source, &mut file))
.map_err(|err| format!("Unable to write {:?}: {:?}", temp_destination_file, err))?;
source.progress_bar.finish_and_clear();
info!(
" {}{}",
SPARKLE,
format!(
"Downloaded {} ({} bytes) in {:?}",
url,
download_size,
Instant::now().duration_since(download_start),
)
);
std::fs::rename(temp_destination_file, destination_file)
.map_err(|err| format!("Unable to rename: {:?}", err))?;
Ok(())
}
pub fn download_genesis_if_missing(
rpc_addr: &SocketAddr,
genesis_package: &Path,
use_progress_bar: bool,
) -> Result<PathBuf, String> {
if !genesis_package.exists() {
let tmp_genesis_path = genesis_package.parent().unwrap().join("tmp-genesis");
let tmp_genesis_package = tmp_genesis_path.join(DEFAULT_GENESIS_ARCHIVE);
let _ignored = fs::remove_dir_all(&tmp_genesis_path);
download_file(
&format!("http://{}/{}", rpc_addr, DEFAULT_GENESIS_ARCHIVE),
&tmp_genesis_package,
use_progress_bar,
&mut None,
)?;
Ok(tmp_genesis_package)
} else {
Err("genesis already exists".to_string())
}
}
pub fn download_snapshot_archive<'a, 'b>(
rpc_addr: &SocketAddr,
snapshot_archives_dir: &Path,
desired_snapshot_hash: (Slot, Hash),
snapshot_type: SnapshotType,
maximum_full_snapshot_archives_to_retain: usize,
maximum_incremental_snapshot_archives_to_retain: usize,
use_progress_bar: bool,
progress_notify_callback: &'a mut DownloadProgressCallbackOption<'b>,
) -> Result<(), String> {
snapshot_utils::purge_old_snapshot_archives(
snapshot_archives_dir,
maximum_full_snapshot_archives_to_retain,
maximum_incremental_snapshot_archives_to_retain,
);
for archive_format in [
ArchiveFormat::TarZstd,
ArchiveFormat::TarGzip,
ArchiveFormat::TarBzip2,
ArchiveFormat::Tar,
] {
let destination_path = match snapshot_type {
SnapshotType::FullSnapshot => snapshot_utils::build_full_snapshot_archive_path(
snapshot_archives_dir.to_path_buf(),
desired_snapshot_hash.0,
&desired_snapshot_hash.1,
archive_format,
),
SnapshotType::IncrementalSnapshot(base_slot) => {
snapshot_utils::build_incremental_snapshot_archive_path(
snapshot_archives_dir.to_path_buf(),
base_slot,
desired_snapshot_hash.0,
&desired_snapshot_hash.1,
archive_format,
)
}
};
if destination_path.is_file() {
return Ok(());
}
match download_file(
&format!(
"http://{}/{}",
rpc_addr,
destination_path.file_name().unwrap().to_str().unwrap()
),
&destination_path,
use_progress_bar,
progress_notify_callback,
) {
Ok(()) => return Ok(()),
Err(err) => info!("{}", err),
}
}
Err(format!(
"Failed to download a snapshot archive for slot {} from {}",
desired_snapshot_hash.0, rpc_addr
))
}