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registry-backup
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rustfmt

master v0.1.0
Jonathan Strong 2 years ago
parent
70dc70dbbb
commit
a6d6f5a0c3
1 changed files with 152 additions and 141 deletions
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  1. 293
      src/main.rs

293
src/main.rs
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@ -1,18 +1,18 @@
use std::num::NonZeroU32;
use std::path::{Path, PathBuf};
use std::time::*;
use std::str::from_utf8;
use std::process::Output;
use std::num::NonZeroU32;
use std::str::from_utf8;
use std::time::*;
use clap::Parser;
use serde::Deserialize;
use tracing::{debug, info, warn, error};
use tracing_subscriber::filter::EnvFilter;
use futures::stream::StreamExt;
use tokio::io::AsyncBufReadExt;
use governor::prelude::*;
use governor::{Quota, RateLimiter};
use reqwest::header::{CONTENT_TYPE, AUTHORIZATION, ACCEPT};
use reqwest::header::{ACCEPT, AUTHORIZATION, CONTENT_TYPE};
use serde::Deserialize;
use tokio::io::AsyncBufReadExt;
use tracing::{debug, error, info, warn};
use tracing_subscriber::filter::EnvFilter;
type AnyError = Box<dyn std::error::Error>;
@ -55,6 +55,7 @@ pub struct OutputConfig {
#[clap(short, long = "output-path", default_value = DEFAULT_OUTPUT_PATH)]
#[serde(default = "default_output_path")]
pub path: PathBuf,
// /// What format to use for the output filenames. Works the same as
// /// Cargo's registry syntax for the "dl" key in the `config.json`
// /// file in a reigstry index. See [Cargo
@ -129,7 +130,6 @@ pub struct Config {
#[serde(default)]
#[clap(short, long, exclusive(true))]
pub config_file: Option<PathBuf>,
// TODO: offer some way to specify you want to use an existing
// path as the index, instead of cloning it
}
@ -171,18 +171,12 @@ impl std::fmt::Debug for Config {
}
}
async fn popen(
cmd: &str,
args: &[&str],
envs: &[(&str, &str)],
) -> Result<Output, AnyError> {
let args: Vec<String> = args.iter()
.map(|x| x.to_string())
.collect();
async fn popen(cmd: &str, args: &[&str], envs: &[(&str, &str)]) -> Result<Output, AnyError> {
let args: Vec<String> = args.iter().map(|x| x.to_string()).collect();
let output = tokio::process::Command::new(cmd)
.args(args.iter().map(|x| x.as_str()))
.envs(envs.iter().map(|(k,v)| (k.to_string(), v.to_string())))
.envs(envs.iter().map(|(k, v)| (k.to_string(), v.to_string())))
.output()
.await
.map_err(|e| {
@ -190,7 +184,8 @@ async fn popen(
e
})?;
debug!("finished executing `{}` Command with status {:?}\n\
debug!(
"finished executing `{}` Command with status {:?}\n\
STDOUT (length={}):\n{}\n\
STDERR (length={}):\n{}\n",
cmd,
@ -201,8 +196,9 @@ async fn popen(
from_utf8(&output.stderr)?,
);
if ! output.status.success() {
error!("finished executing `{}` Command with status {:?}\n\
if !output.status.success() {
error!(
"finished executing `{}` Command with status {:?}\n\
STDOUT (length={}):\n{}\n\
STDERR (length={}):\n{}\n",
cmd,
@ -213,17 +209,17 @@ async fn popen(
from_utf8(&output.stderr)?,
);
return Err(format!("git clone commnad failed with error code {:?}", output.status).into())
return Err(format!(
"git clone commnad failed with error code {:?}",
output.status
)
.into());
}
Ok(output)
}
async fn git_clone(
src: &str,
dst: &Path,
envs: &[(&str, &str)],
) -> Result<(), AnyError> {
async fn git_clone(src: &str, dst: &Path, envs: &[(&str, &str)]) -> Result<(), AnyError> {
let begin = Instant::now();
popen(
"git",
@ -234,11 +230,11 @@ async fn git_clone(
][..],
envs,
)
.await
.map_err(|e| -> AnyError {
error!(%src, ?dst, ?e, "in git_clone, Command failed");
e
})?;
.await
.map_err(|e| -> AnyError {
error!(%src, ?dst, ?e, "in git_clone, Command failed");
e
})?;
info!(%src, ?dst, "cloned repo in {:?}", begin.elapsed());
@ -273,10 +269,11 @@ async fn load_registry_config(clone_dir: &Path) -> Result<RegistryConfig, AnyErr
}
fn is_hidden(entry: &walkdir::DirEntry) -> bool {
entry.file_name()
.to_str()
.map(|s| s.starts_with('.'))
.unwrap_or(false)
entry
.file_name()
.to_str()
.map(|s| s.starts_with('.'))
.unwrap_or(false)
}
async fn get_crate_versions(clone_dir: &Path) -> Result<Vec<CrateVersion>, AnyError> {
@ -284,65 +281,67 @@ async fn get_crate_versions(clone_dir: &Path) -> Result<Vec<CrateVersion>, AnyEr
.max_depth(3)
.into_iter()
.filter_entry(|e| !is_hidden(e))
.filter_map(|res| {
match res {
Ok(entry) => {
if entry.file_type().is_file() && entry.depth() >= 2 && entry.depth() <= 3 {
let path = entry.into_path();
debug!(?path, "found crate metadata file to parse");
Some(path)
} else {
None
}
}
Err(e) => {
warn!(error = ?e, "walkdir result is error");
.filter_map(|res| match res {
Ok(entry) => {
if entry.file_type().is_file() && entry.depth() >= 2 && entry.depth() <= 3 {
let path = entry.into_path();
debug!(?path, "found crate metadata file to parse");
Some(path)
} else {
None
}
}
}).collect();
Err(e) => {
warn!(error = ?e, "walkdir result is error");
None
}
})
.collect();
info!("found {} crate metadata files to parse", files.len());
let crate_versions: Vec<Result<Vec<CrateVersion>, AnyError>> = futures::stream::iter(
files.into_iter().map(|path| {
async move {
let file = tokio::fs::File::open(&path)
.await
.map_err(|e| { error!(err = ?e, ?path, "failed to open file"); e })?;
let buf = tokio::io::BufReader::new(file);
let mut out = Vec::new();
let mut lines = buf.lines();
while let Some(line) = lines.next_line().await? {
let vers: CrateVersion = serde_json::from_str(&line)
.map_err(|e| { error!(err = ?e, ?path, "failed to parse line"); e })?;
out.push(vers);
}
debug!(crate_name = %out.first().map(|x| x.name.as_str()).unwrap_or("na"),
"parsed {} crate versions from metadata file", out.len()
);
Ok(out)
let crate_versions: Vec<Result<Vec<CrateVersion>, AnyError>> =
futures::stream::iter(files.into_iter().map(|path| async move {
let file = tokio::fs::File::open(&path).await.map_err(|e| {
error!(err = ?e, ?path, "failed to open file");
e
})?;
let buf = tokio::io::BufReader::new(file);
let mut out = Vec::new();
let mut lines = buf.lines();
while let Some(line) = lines.next_line().await? {
let vers: CrateVersion = serde_json::from_str(&line).map_err(|e| {
error!(err = ?e, ?path, "failed to parse line");
e
})?;
out.push(vers);
}
})
)
debug!(crate_name = %out.first().map(|x| x.name.as_str()).unwrap_or("na"),
"parsed {} crate versions from metadata file", out.len()
);
Ok(out)
}))
.buffer_unordered(num_cpus::get())
.collect()
.await;
let crate_versions: Vec<CrateVersion> = crate_versions.into_iter()
.flat_map(|result| {
match result {
Ok(xs) => xs.into_iter().filter(|x| x.name != "vst").collect(),
Err(e) => {
error!(err = ?e, "parsing metadata failed, skipping file");
vec![]
}
let crate_versions: Vec<CrateVersion> = crate_versions
.into_iter()
.flat_map(|result| match result {
Ok(xs) => xs.into_iter().filter(|x| x.name != "vst").collect(),
Err(e) => {
error!(err = ?e, "parsing metadata failed, skipping file");
vec![]
}
}).collect();
})
.collect();
info!(
"collected {} total crate versions to download",
crate_versions.len()
);
info!("collected {} total crate versions to download", crate_versions.len());
Ok(crate_versions)
}
@ -375,88 +374,92 @@ async fn ensure_file_parent_dir_exists<P: AsRef<std::path::Path>>(path: P) -> Re
macro_rules! megabytes {
($x:expr) => {{
use pretty_toa::ThousandsSep;
let mb = $x as f64 / 1024.0 /1024.0;
let mb = $x as f64 / 1024.0 / 1024.0;
if mb > 2048.0 {
format!("{}G", (((mb / 1024.0) * 100.0).round() / 100.0).thousands_sep())
format!(
"{}G",
(((mb / 1024.0) * 100.0).round() / 100.0).thousands_sep()
)
} else if mb < 0.75 {
let kb = $x as f64 / 1024.0;
format!("{}K", ((kb * 10.0).round() / 10.0).thousands_sep())
} else {
format!("{}M", ((mb * 10.0).round() / 10.0).thousands_sep())
}
}}
}};
}
async fn download_versions(config: &Config, registry_config: &RegistryConfig, versions: Vec<CrateVersion>) -> Result<(), AnyError> {
async fn download_versions(
config: &Config,
registry_config: &RegistryConfig,
versions: Vec<CrateVersion>,
) -> Result<(), AnyError> {
let begin = Instant::now();
ensure_dir_exists(&config.output.path).await?;
let rate_limit = RateLimiter::direct(
Quota::per_second(config.http.requests_per_second)
);
let rate_limit = RateLimiter::direct(Quota::per_second(config.http.requests_per_second));
let http_client = reqwest::Client::builder()
.user_agent(&config.http.user_agent)
.build()?;
let inner_stream = futures::stream::iter(
versions.into_iter().map(|vers| {
let req_begin = Instant::now();
let http_client = http_client.clone();
async move {
// TODO actually parse and use the format
let vers_path = format!("{}/{}/download", vers.name, vers.vers);
let url = format!("{}/{}", registry_config.dl, vers_path);
debug!(?url, "downloading...");
let req = http_client.get(url)
.header(CONTENT_TYPE, "application/json")
.header(ACCEPT, "application/json");
let req = if let Some(token) = config.auth_token.as_deref() {
req.header(AUTHORIZATION, token)
} else {
req
};
let resp = req.send().await?;
let status = resp.status();
let body = resp.bytes().await?;
if ! status.is_success() {
error!(status = ?status, "download failed");
debug!("response body:\n{}\n", from_utf8(&body.slice(..))?);
Err::<_, AnyError>(format!("error response {:?} from server", status).into())
} else {
// TODO: check if this path exists already before downloading
let output_path = config.output.path.join(vers_path);
ensure_file_parent_dir_exists(&output_path)
.await
.map_err(|e| {
error!(?output_path, err = ?e, "ensure parent dir exists failed");
e
})?;
tokio::fs::write(&output_path, body.slice(..))
.await
.map_err(|e| { error!(err = ?e, "writing file failed"); e })?;
info!(
let inner_stream = futures::stream::iter(versions.into_iter().map(|vers| {
let req_begin = Instant::now();
let http_client = http_client.clone();
async move {
// TODO actually parse and use the format
let vers_path = format!("{}/{}/download", vers.name, vers.vers);
let url = format!("{}/{}", registry_config.dl, vers_path);
debug!(?url, "downloading...");
let req = http_client
.get(url)
.header(CONTENT_TYPE, "application/json")
.header(ACCEPT, "application/json");
let req = if let Some(token) = config.auth_token.as_deref() {
req.header(AUTHORIZATION, token)
} else {
req
};
let resp = req.send().await?;
let status = resp.status();
let body = resp.bytes().await?;
if !status.is_success() {
error!(status = ?status, "download failed");
debug!("response body:\n{}\n", from_utf8(&body.slice(..))?);
Err::<_, AnyError>(format!("error response {:?} from server", status).into())
} else {
// TODO: check if this path exists already before downloading
let output_path = config.output.path.join(vers_path);
ensure_file_parent_dir_exists(&output_path)
.await
.map_err(|e| {
error!(?output_path, err = ?e, "ensure parent dir exists failed");
e
})?;
tokio::fs::write(&output_path, body.slice(..))
.await
.map_err(|e| {
error!(err = ?e, "writing file failed");
e
})?;
info!(
filesize = megabytes!(body.len()),
crate_name = %vers.name,
version = %vers.vers,
"downloaded .crate file in {:?}", req_begin.elapsed());
debug!(?output_path, "wrote {} bytes to file", body.len());
Ok(output_path)
}
debug!(?output_path, "wrote {} bytes to file", body.len());
Ok(output_path)
}
})
)
.buffer_unordered(config.http.max_concurrent_requests.get() as usize);
}
}))
.buffer_unordered(config.http.max_concurrent_requests.get() as usize);
let outer_stream = inner_stream.ratelimit_stream(&rate_limit);
let results: Vec<Result<PathBuf, AnyError>> =
outer_stream
.collect()
.await;
let results: Vec<Result<PathBuf, AnyError>> = outer_stream.collect().await;
let mut ret = Ok(());
@ -471,7 +474,13 @@ async fn download_versions(config: &Config, registry_config: &RegistryConfig, ve
}
let n_ok = n - n_err;
info!(n_ok, n_err, "finished downloading {} files in {:?}", n_ok, begin.elapsed());
info!(
n_ok,
n_err,
"finished downloading {} files in {:?}",
n_ok,
begin.elapsed()
);
ret
}
@ -480,7 +489,8 @@ async fn run(config: Config) -> Result<(), AnyError> {
let config = load_config_file(config).await?;
debug!("config:\n{:#?}\n", config);
assert!(config.index_url.is_some() || config.index_path.is_some(),
assert!(
config.index_url.is_some() || config.index_path.is_some(),
"one of index-url or index-path is required",
);
@ -503,6 +513,7 @@ async fn run(config: Config) -> Result<(), AnyError> {
let versions = get_crate_versions(index_path).await?;
download_versions(&config, &registry_config, versions).await?;
Ok(())
}

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