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Trinity Pointard 2021-04-06 05:25:28 +02:00
parent 653d3d588f
commit c8906f200b
20 changed files with 38 additions and 44 deletions

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@ -29,7 +29,7 @@ pub enum Error {
NotFound, NotFound,
// Category: bad request // Category: bad request
/// The request used an invalid path /// The request contained an invalid UTF-8 sequence in its path or in other parameters
#[error(display = "Invalid UTF-8: {}", _0)] #[error(display = "Invalid UTF-8: {}", _0)]
InvalidUTF8Str(#[error(source)] std::str::Utf8Error), InvalidUTF8Str(#[error(source)] std::str::Utf8Error),
@ -65,7 +65,7 @@ impl From<roxmltree::Error> for Error {
} }
impl Error { impl Error {
/// Convert an error into an Http status code /// Get the HTTP status code that best represents the meaning of the error for the client
pub fn http_status_code(&self) -> StatusCode { pub fn http_status_code(&self) -> StatusCode {
match self { match self {
Error::NotFound => StatusCode::NOT_FOUND, Error::NotFound => StatusCode::NOT_FOUND,

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@ -1,4 +1,3 @@
#![deny(missing_crate_level_docs, missing_docs)]
//! Crate for serving a S3 compatible API //! Crate for serving a S3 compatible API
#[macro_use] #[macro_use]
extern crate log; extern crate log;

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@ -1,6 +1,5 @@
#![deny(missing_crate_level_docs, missing_docs)]
#![recursion_limit = "1024"] #![recursion_limit = "1024"]
//! Garage CLI, used to interact with a running Garage instance, and to launch a Garage //! Garage CLI, used to interact with a running Garage instance, and to launch a Garage instance
#[macro_use] #[macro_use]
extern crate log; extern crate log;

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@ -157,7 +157,7 @@ impl BlockManager {
} }
/// Write a block to disk /// Write a block to disk
pub async fn write_block(&self, hash: &Hash, data: &[u8]) -> Result<Message, Error> { async fn write_block(&self, hash: &Hash, data: &[u8]) -> Result<Message, Error> {
let _lock = self.data_dir_lock.lock().await; let _lock = self.data_dir_lock.lock().await;
let mut path = self.block_dir(hash); let mut path = self.block_dir(hash);
@ -176,7 +176,7 @@ impl BlockManager {
} }
/// Read block from disk, verifying it's integrity /// Read block from disk, verifying it's integrity
pub async fn read_block(&self, hash: &Hash) -> Result<Message, Error> { async fn read_block(&self, hash: &Hash) -> Result<Message, Error> {
let path = self.block_path(hash); let path = self.block_path(hash);
let mut f = match fs::File::open(&path).await { let mut f = match fs::File::open(&path).await {
@ -208,7 +208,7 @@ impl BlockManager {
} }
/// Check if this node should have a block, but don't actually have it /// Check if this node should have a block, but don't actually have it
pub async fn need_block(&self, hash: &Hash) -> Result<bool, Error> { async fn need_block(&self, hash: &Hash) -> Result<bool, Error> {
let needed = self let needed = self
.rc .rc
.get(hash.as_ref())? .get(hash.as_ref())?

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@ -10,16 +10,14 @@ use crate::block::*;
#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)] #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
pub struct BlockRef { pub struct BlockRef {
// Primary key /// Hash of the block, used as partition key
/// Hash of the block
pub block: Hash, pub block: Hash,
// Sort key /// Id of the Version for the object containing this block, used as sorting key
// why a version on a hashed (probably immutable) piece of data?
pub version: UUID, pub version: UUID,
// Keep track of deleted status // Keep track of deleted status
/// Is that block deleted /// Is the Version that contains this block deleted
pub deleted: crdt::Bool, pub deleted: crdt::Bool,
} }

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@ -6,7 +6,7 @@ use garage_table::*;
/// An api key /// An api key
#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)] #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
pub struct Key { pub struct Key {
/// The id of the key (immutable) /// The id of the key (immutable), used as partition key
pub key_id: String, pub key_id: String,
/// The secret_key associated /// The secret_key associated
@ -19,6 +19,7 @@ pub struct Key {
pub deleted: crdt::Bool, pub deleted: crdt::Bool,
/// Buckets in which the key is authorized. Empty if `Key` is deleted /// Buckets in which the key is authorized. Empty if `Key` is deleted
// CRDT interaction: deleted implies authorized_buckets is empty
pub authorized_buckets: crdt::LWWMap<String, PermissionSet>, pub authorized_buckets: crdt::LWWMap<String, PermissionSet>,
} }

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@ -1,4 +1,3 @@
#![warn(missing_docs)]
#[macro_use] #[macro_use]
extern crate log; extern crate log;

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@ -14,13 +14,13 @@ use crate::version_table::*;
/// An object /// An object
#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)] #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
pub struct Object { pub struct Object {
/// The bucket in which the object is stored /// The bucket in which the object is stored, used as partition key
pub bucket: String, pub bucket: String,
/// The key at which the object is stored in its bucket /// The key at which the object is stored in its bucket, used as sorting key
pub key: String, pub key: String,
/// The list of known versions of the object /// The list of currenty stored versions of the object
versions: Vec<ObjectVersion>, versions: Vec<ObjectVersion>,
} }
@ -53,7 +53,7 @@ impl Object {
} }
} }
/// Get a list of all versions known for `Object` /// Get a list of currently stored versions of `Object`
pub fn versions(&self) -> &[ObjectVersion] { pub fn versions(&self) -> &[ObjectVersion] {
&self.versions[..] &self.versions[..]
} }
@ -77,7 +77,7 @@ pub enum ObjectVersionState {
Uploading(ObjectVersionHeaders), Uploading(ObjectVersionHeaders),
/// The version is fully received /// The version is fully received
Complete(ObjectVersionData), Complete(ObjectVersionData),
/// The version was never fully received /// The version uploaded containded errors or the upload was explicitly aborted
Aborted, Aborted,
} }
@ -105,7 +105,7 @@ impl CRDT for ObjectVersionState {
/// Data about an object version /// Data about an object version
#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Debug, Serialize, Deserialize)] #[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Debug, Serialize, Deserialize)]
pub enum ObjectVersionData { pub enum ObjectVersionData {
/// The version is deleted /// The object was deleted, this Version is a tombstone to mark it as such
DeleteMarker, DeleteMarker,
/// The object is short, it's stored inlined /// The object is short, it's stored inlined
Inline(ObjectVersionMeta, #[serde(with = "serde_bytes")] Vec<u8>), Inline(ObjectVersionMeta, #[serde(with = "serde_bytes")] Vec<u8>),
@ -159,7 +159,7 @@ impl ObjectVersion {
} }
} }
/// Is the object version available (received and not deleted) /// Is the object version available (received and not a tombstone)
pub fn is_data(&self) -> bool { pub fn is_data(&self) -> bool {
match self.state { match self.state {
ObjectVersionState::Complete(ObjectVersionData::DeleteMarker) => false, ObjectVersionState::Complete(ObjectVersionData::DeleteMarker) => false,

View file

@ -13,7 +13,7 @@ use crate::block_ref_table::*;
/// A version of an object /// A version of an object
#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)] #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
pub struct Version { pub struct Version {
/// UUID of the version /// UUID of the version, used as partition key
pub uuid: UUID, pub uuid: UUID,
// Actual data: the blocks for this version // Actual data: the blocks for this version
@ -49,9 +49,9 @@ impl Version {
#[derive(PartialEq, Eq, Clone, Copy, Debug, Serialize, Deserialize)] #[derive(PartialEq, Eq, Clone, Copy, Debug, Serialize, Deserialize)]
pub struct VersionBlockKey { pub struct VersionBlockKey {
/// Number of the part, starting at 1 /// Number of the part
pub part_number: u64, pub part_number: u64,
/// offset of the block in the file, starting at 0 /// Offset of this sub-segment in its part
pub offset: u64, pub offset: u64,
} }

View file

@ -1,4 +1,3 @@
#![warn(missing_crate_level_docs, missing_docs)]
//! Crate containing rpc related functions and types used in Garage //! Crate containing rpc related functions and types used in Garage
#[macro_use] #[macro_use]

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@ -1,4 +1,4 @@
/// Module containing structs related to membership management //! Module containing structs related to membership management
use std::collections::HashMap; use std::collections::HashMap;
use std::fmt::Write as FmtWrite; use std::fmt::Write as FmtWrite;
use std::io::{Read, Write}; use std::io::{Read, Write};
@ -96,7 +96,7 @@ pub struct System {
rpc_client: Arc<RpcClient<Message>>, rpc_client: Arc<RpcClient<Message>>,
pub(crate) status: watch::Receiver<Arc<Status>>, pub(crate) status: watch::Receiver<Arc<Status>>,
/// The ring, viewed by this node /// The ring
pub ring: watch::Receiver<Arc<Ring>>, pub ring: watch::Receiver<Arc<Ring>>,
update_lock: Mutex<Updaters>, update_lock: Mutex<Updaters>,
@ -114,9 +114,8 @@ struct Updaters {
#[derive(Debug, Clone)] #[derive(Debug, Clone)]
pub struct Status { pub struct Status {
/// Mapping of each node id to its known status /// Mapping of each node id to its known status
// considering its sorted regularly, maybe it should be a btreeset?
pub nodes: HashMap<UUID, Arc<StatusEntry>>, pub nodes: HashMap<UUID, Arc<StatusEntry>>,
/// Hash of this entry /// Hash of `nodes`, used to detect when nodes have different views of the cluster
pub hash: Hash, pub hash: Hash,
} }
@ -380,7 +379,7 @@ impl System {
id_option, id_option,
addr, addr,
sys.rpc_client sys.rpc_client
.get_addr() .by_addr()
.call(&addr, ping_msg_ref, PING_TIMEOUT) .call(&addr, ping_msg_ref, PING_TIMEOUT)
.await, .await,
) )
@ -418,6 +417,8 @@ impl System {
} }
} else if let Some(id) = id_option { } else if let Some(id) = id_option {
if let Some(st) = status.nodes.get_mut(id) { if let Some(st) = status.nodes.get_mut(id) {
// TODO this might double-increment the value as the counter is already
// incremented for any kind of failure in rpc_client
st.num_failures.fetch_add(1, Ordering::SeqCst); st.num_failures.fetch_add(1, Ordering::SeqCst);
if !st.is_up() { if !st.is_up() {
warn!("Node {:?} seems to be down.", id); warn!("Node {:?} seems to be down.", id);

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@ -1,4 +1,5 @@
//! Module containing types related to computing nodes which should receive a copy of data blocks //! Module containing types related to computing nodes which should receive a copy of data blocks
//! and metadata
use std::collections::{HashMap, HashSet}; use std::collections::{HashMap, HashSet};
use std::convert::TryInto; use std::convert::TryInto;
@ -197,7 +198,7 @@ impl Ring {
top >> (16 - PARTITION_BITS) top >> (16 - PARTITION_BITS)
} }
/// Get the list of partitions and /// Get the list of partitions and the first hash of a partition key that would fall in it
pub fn partitions(&self) -> Vec<(Partition, Hash)> { pub fn partitions(&self) -> Vec<(Partition, Hash)> {
let mut ret = vec![]; let mut ret = vec![];
@ -211,6 +212,7 @@ impl Ring {
ret ret
} }
// TODO rename this function as it no longer walk the ring
/// Walk the ring to find the n servers in which data should be replicated /// Walk the ring to find the n servers in which data should be replicated
pub fn walk_ring(&self, from: &Hash, n: usize) -> Vec<UUID> { pub fn walk_ring(&self, from: &Hash, n: usize) -> Vec<UUID> {
if self.ring.len() != 1 << PARTITION_BITS { if self.ring.len() != 1 << PARTITION_BITS {

View file

@ -53,6 +53,7 @@ impl RequestStrategy {
self self
} }
/// Set if requests can be dropped after quorum has been reached /// Set if requests can be dropped after quorum has been reached
/// In general true for read requests, and false for write
pub fn interrupt_after_quorum(mut self, interrupt: bool) -> Self { pub fn interrupt_after_quorum(mut self, interrupt: bool) -> Self {
self.rs_interrupt_after_quorum = interrupt; self.rs_interrupt_after_quorum = interrupt;
self self
@ -103,8 +104,8 @@ impl<M: RpcMessage + 'static> RpcClient<M> {
self.local_handler.swap(Some(Arc::new((my_id, handler)))); self.local_handler.swap(Some(Arc::new((my_id, handler))));
} }
/// Get the server address this client connect to /// Get a RPC client to make calls using node's SocketAddr instead of its ID
pub fn get_addr(&self) -> &RpcAddrClient<M> { pub fn by_addr(&self) -> &RpcAddrClient<M> {
&self.rpc_addr_client &self.rpc_addr_client
} }
@ -167,7 +168,7 @@ impl<M: RpcMessage + 'static> RpcClient<M> {
} }
/// Make a RPC call to multiple servers, returning either a Vec of responses, or an error if /// Make a RPC call to multiple servers, returning either a Vec of responses, or an error if
/// strategy could not be respected due to to many errors /// strategy could not be respected due to too many errors
pub async fn try_call_many( pub async fn try_call_many(
self: &Arc<Self>, self: &Arc<Self>,
to: &[UUID], to: &[UUID],
@ -227,7 +228,7 @@ impl<M: RpcMessage + 'static> RpcClient<M> {
} }
} }
/// Endpoint to which send RPC /// Thin wrapper arround an `RpcHttpClient` specifying the path of the request
pub struct RpcAddrClient<M: RpcMessage> { pub struct RpcAddrClient<M: RpcMessage> {
phantom: PhantomData<M>, phantom: PhantomData<M>,

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@ -1,4 +1,3 @@
#![warn(missing_docs)]
#![recursion_limit = "1024"] #![recursion_limit = "1024"]
#[macro_use] #[macro_use]

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@ -16,7 +16,6 @@ pub trait TableReplication: Send + Sync {
fn write_nodes(&self, hash: &Hash) -> Vec<UUID>; fn write_nodes(&self, hash: &Hash) -> Vec<UUID>;
/// Responses needed to consider a write succesfull /// Responses needed to consider a write succesfull
fn write_quorum(&self) -> usize; fn write_quorum(&self) -> usize;
// this feels like its write_nodes().len() - write_quorum()
fn max_write_errors(&self) -> usize; fn max_write_errors(&self) -> usize;
// Accessing partitions, for Merkle tree & sync // Accessing partitions, for Merkle tree & sync

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@ -4,7 +4,7 @@ use garage_util::data::*;
use crate::crdt::CRDT; use crate::crdt::CRDT;
/// Trait for partitionnable data /// Trait for field used to partition data
pub trait PartitionKey { pub trait PartitionKey {
/// Get the key used to partition /// Get the key used to partition
fn hash(&self) -> Hash; fn hash(&self) -> Hash;
@ -22,7 +22,7 @@ impl PartitionKey for Hash {
} }
} }
/// Trait for sortable data /// Trait for field used to sort data
pub trait SortKey { pub trait SortKey {
/// Get the key used to sort /// Get the key used to sort
fn sort_key(&self) -> &[u8]; fn sort_key(&self) -> &[u8];

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@ -1,5 +1,4 @@
//! Module containing error types used in Garage //! Module containing error types used in Garage
#![allow(missing_docs)]
use err_derive::Error; use err_derive::Error;
use hyper::StatusCode; use hyper::StatusCode;
use std::io; use std::io;

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@ -1,4 +1,3 @@
#![warn(missing_crate_level_docs, missing_docs)]
//! Crate containing common functions and types used in Garage //! Crate containing common functions and types used in Garage
#[macro_use] #[macro_use]

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@ -19,7 +19,7 @@ pub enum Error {
#[error(display = "Not found")] #[error(display = "Not found")]
NotFound, NotFound,
/// The client requested a malformed path /// The request contained an invalid UTF-8 sequence in its path or in other parameters
#[error(display = "Invalid UTF-8: {}", _0)] #[error(display = "Invalid UTF-8: {}", _0)]
InvalidUTF8(#[error(source)] std::str::Utf8Error), InvalidUTF8(#[error(source)] std::str::Utf8Error),

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@ -1,4 +1,3 @@
#![deny(missing_crate_level_docs, missing_docs)]
//! Crate for handling web serving of s3 bucket //! Crate for handling web serving of s3 bucket
#[macro_use] #[macro_use]
extern crate log; extern crate log;