forked from Deuxfleurs/garage
document util crate
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6 changed files with 63 additions and 3 deletions
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@ -1,3 +1,4 @@
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//! Job runner for futures and async functions
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use core::future::Future;
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use std::pin::Pin;
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use std::sync::Arc;
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@ -12,14 +13,15 @@ use crate::error::Error;
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type JobOutput = Result<(), Error>;
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type Job = Pin<Box<dyn Future<Output = JobOutput> + Send>>;
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/// Job runner for futures and async functions
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pub struct BackgroundRunner {
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pub stop_signal: watch::Receiver<bool>,
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stop_signal: watch::Receiver<bool>,
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queue_in: mpsc::UnboundedSender<(Job, bool)>,
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worker_in: mpsc::UnboundedSender<tokio::task::JoinHandle<()>>,
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}
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impl BackgroundRunner {
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/// Create a new BackgroundRunner
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pub fn new(
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n_runners: usize,
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stop_signal: watch::Receiver<bool>,
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@ -103,7 +105,7 @@ impl BackgroundRunner {
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(bgrunner, await_all_done)
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}
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// Spawn a task to be run in background
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/// Spawn a task to be run in background
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pub fn spawn<T>(&self, job: T)
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where
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T: Future<Output = JobOutput> + Send + 'static,
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@ -115,6 +117,8 @@ impl BackgroundRunner {
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.unwrap();
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}
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/// Spawn a task to be run in background. It may get discarded before running if spawned while
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/// the runner is stopping
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pub fn spawn_cancellable<T>(&self, job: T)
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where
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T: Future<Output = JobOutput> + Send + 'static,
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@ -1,3 +1,4 @@
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//! Contains type and functions related to Garage configuration file
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use std::io::Read;
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use std::net::SocketAddr;
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use std::path::PathBuf;
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@ -6,57 +7,82 @@ use serde::{de, Deserialize};
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use crate::error::Error;
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/// Represent the whole configuration
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#[derive(Deserialize, Debug, Clone)]
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pub struct Config {
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/// Path where to store metadata. Should be fast, but low volume
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pub metadata_dir: PathBuf,
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/// Path where to store data. Can be slower, but need higher volume
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pub data_dir: PathBuf,
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/// Address to bind for RPC
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pub rpc_bind_addr: SocketAddr,
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/// Bootstrap peers RPC address
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#[serde(deserialize_with = "deserialize_vec_addr")]
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pub bootstrap_peers: Vec<SocketAddr>,
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/// Consule host to connect to to discover more peers
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pub consul_host: Option<String>,
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/// Consul service name to use
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pub consul_service_name: Option<String>,
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/// Max number of concurrent RPC request
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#[serde(default = "default_max_concurrent_rpc_requests")]
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pub max_concurrent_rpc_requests: usize,
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/// Size of data blocks to save to disk
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#[serde(default = "default_block_size")]
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pub block_size: usize,
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#[serde(default = "default_control_write_max_faults")]
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pub control_write_max_faults: usize,
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/// How many nodes should hold a copy of meta data
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#[serde(default = "default_replication_factor")]
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pub meta_replication_factor: usize,
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/// How many nodes should hold a copy of data
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#[serde(default = "default_replication_factor")]
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pub data_replication_factor: usize,
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/// Configuration for RPC TLS
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pub rpc_tls: Option<TlsConfig>,
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/// Configuration for S3 api
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pub s3_api: ApiConfig,
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/// Configuration for serving files as normal web server
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pub s3_web: WebConfig,
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}
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/// Configuration for RPC TLS
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#[derive(Deserialize, Debug, Clone)]
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pub struct TlsConfig {
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/// Path to certificate autority used for all nodes
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pub ca_cert: String,
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/// Path to public certificate for this node
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pub node_cert: String,
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/// Path to private key for this node
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pub node_key: String,
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}
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/// Configuration for S3 api
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#[derive(Deserialize, Debug, Clone)]
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pub struct ApiConfig {
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/// Address and port to bind for api serving
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pub api_bind_addr: SocketAddr,
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/// S3 region to use
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pub s3_region: String,
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}
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/// Configuration for serving files as normal web server
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#[derive(Deserialize, Debug, Clone)]
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pub struct WebConfig {
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/// Address and port to bind for web serving
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pub bind_addr: SocketAddr,
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/// Suffix to remove from domain name to find bucket
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pub root_domain: String,
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/// Suffix to add when user-agent request path end with "/"
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pub index: String,
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}
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1
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}
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/// Read and parse configuration
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pub fn read_config(config_file: PathBuf) -> Result<Config, Error> {
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let mut file = std::fs::OpenOptions::new()
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.read(true)
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//! Contains common types and functions related to serialization and integrity
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use rand::Rng;
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use serde::de::{self, Visitor};
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use serde::{Deserialize, Deserializer, Serialize, Serializer};
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use std::fmt;
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/// An array of 32 bytes
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#[derive(Default, PartialOrd, Ord, Clone, Hash, PartialEq, Copy)]
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pub struct FixedBytes32([u8; 32]);
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}
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impl FixedBytes32 {
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/// Access the content as a slice
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pub fn as_slice(&self) -> &[u8] {
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&self.0[..]
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}
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/// Access the content as a mutable slice
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pub fn as_slice_mut(&mut self) -> &mut [u8] {
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&mut self.0[..]
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}
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/// Copy to a slice
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pub fn to_vec(&self) -> Vec<u8> {
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self.0.to_vec()
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}
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/// Try building a FixedBytes32 from a slice
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/// Return None if the slice is not 32 bytes long
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pub fn try_from(by: &[u8]) -> Option<Self> {
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if by.len() != 32 {
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return None;
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}
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}
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/// A 32 bytes UUID
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pub type UUID = FixedBytes32;
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/// A 256 bit cryptographic hash, can be sha256 or blake2 depending on provenance
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pub type Hash = FixedBytes32;
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/// Compute the sha256 of a slice
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pub fn sha256sum(data: &[u8]) -> Hash {
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use sha2::{Digest, Sha256};
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hash.into()
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}
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/// Compute the blake2 of a slice
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pub fn blake2sum(data: &[u8]) -> Hash {
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use blake2::{Blake2b, Digest};
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hash.into()
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}
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/// A 64 bit non cryptographic hash
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pub type FastHash = u64;
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/// Compute a (non cryptographic) of a slice
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pub fn fasthash(data: &[u8]) -> FastHash {
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use xxhash_rust::xxh3::Xxh3;
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h.digest()
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}
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/// Generate a random 32 bytes UUID
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pub fn gen_uuid() -> UUID {
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rand::thread_rng().gen::<[u8; 32]>().into()
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}
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// RMP serialization with names of fields and variants
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/// Serialize to MessagePack
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pub fn rmp_to_vec_all_named<T>(val: &T) -> Result<Vec<u8>, rmp_serde::encode::Error>
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where
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T: Serialize + ?Sized,
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Ok(wr)
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}
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/// Serialize to JSON, truncating long result
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pub fn debug_serialize<T: Serialize>(x: T) -> String {
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match serde_json::to_string(&x) {
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Ok(ss) => {
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if ss.len() > 100 {
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// TODO this can panic if 100 is not a codepoint boundary, but inside a 2 Bytes
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// (or more) codepoint
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ss[..100].to_string()
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} else {
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ss
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//! Module containing error types used in Garage
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#![allow(missing_docs)]
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use err_derive::Error;
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use hyper::StatusCode;
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use std::io;
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use crate::data::*;
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/// RPC related errors
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#[derive(Debug, Error)]
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pub enum RPCError {
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#[error(display = "Node is down: {:?}.", _0)]
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TooManyErrors(Vec<String>),
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}
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/// Regroup all Garage errors
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#[derive(Debug, Error)]
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pub enum Error {
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#[error(display = "IO error: {}", _0)]
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#![warn(missing_crate_level_docs, missing_docs)]
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//! Crate containing common functions and types used in Garage
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#[macro_use]
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extern crate log;
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//! Module containing helper functions to manipulate time
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use chrono::{SecondsFormat, TimeZone, Utc};
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use std::time::{SystemTime, UNIX_EPOCH};
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/// Returns milliseconds since UNIX Epoch
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pub fn now_msec() -> u64 {
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SystemTime::now()
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.duration_since(UNIX_EPOCH)
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.as_millis() as u64
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}
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/// Convert a timestamp represented as milliseconds since UNIX Epoch to
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/// its RFC3339 representation, such as "2021-01-01T12:30:00Z"
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pub fn msec_to_rfc3339(msecs: u64) -> String {
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let secs = msecs as i64 / 1000;
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let nanos = (msecs as i64 % 1000) as u32 * 1_000_000;
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