diff options
Diffstat (limited to 'src/storage/mod.rs')
-rw-r--r-- | src/storage/mod.rs | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/src/storage/mod.rs b/src/storage/mod.rs deleted file mode 100644 index 1f86f71..0000000 --- a/src/storage/mod.rs +++ /dev/null @@ -1,179 +0,0 @@ -/* - * - * This abstraction goal is to leverage all the semantic of Garage K2V+S3, - * to be as tailored as possible to it ; it aims to be a zero-cost abstraction - * compared to when we where directly using the K2V+S3 client. - * - * My idea: we can encapsulate the causality token - * into the object system so it is not exposed. - */ - -pub mod garage; -pub mod in_memory; - -use async_trait::async_trait; -use std::collections::HashMap; -use std::hash::Hash; -use std::sync::Arc; - -#[derive(Debug, Clone)] -pub enum Alternative { - Tombstone, - Value(Vec<u8>), -} -type ConcurrentValues = Vec<Alternative>; - -#[derive(Debug, Clone)] -pub enum StorageError { - NotFound, - Internal, -} -impl std::fmt::Display for StorageError { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - f.write_str("Storage Error: ")?; - match self { - Self::NotFound => f.write_str("Item not found"), - Self::Internal => f.write_str("An internal error occured"), - } - } -} -impl std::error::Error for StorageError {} - -#[derive(Debug, Clone, PartialEq)] -pub struct RowUid { - pub shard: String, - pub sort: String, -} - -#[derive(Debug, Clone, PartialEq)] -pub struct RowRef { - pub uid: RowUid, - pub causality: Option<String>, -} -impl std::fmt::Display for RowRef { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - write!( - f, - "RowRef({}, {}, {:?})", - self.uid.shard, self.uid.sort, self.causality - ) - } -} - -impl RowRef { - pub fn new(shard: &str, sort: &str) -> Self { - Self { - uid: RowUid { - shard: shard.to_string(), - sort: sort.to_string(), - }, - causality: None, - } - } - pub fn with_causality(mut self, causality: String) -> Self { - self.causality = Some(causality); - self - } -} - -#[derive(Debug, Clone)] -pub struct RowVal { - pub row_ref: RowRef, - pub value: ConcurrentValues, -} - -impl RowVal { - pub fn new(row_ref: RowRef, value: Vec<u8>) -> Self { - Self { - row_ref, - value: vec![Alternative::Value(value)], - } - } -} - -#[derive(Debug, Clone)] -pub struct BlobRef(pub String); -impl std::fmt::Display for BlobRef { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - write!(f, "BlobRef({})", self.0) - } -} - -#[derive(Debug, Clone)] -pub struct BlobVal { - pub blob_ref: BlobRef, - pub meta: HashMap<String, String>, - pub value: Vec<u8>, -} -impl BlobVal { - pub fn new(blob_ref: BlobRef, value: Vec<u8>) -> Self { - Self { - blob_ref, - value, - meta: HashMap::new(), - } - } - - pub fn with_meta(mut self, k: String, v: String) -> Self { - self.meta.insert(k, v); - self - } -} - -#[derive(Debug)] -pub enum Selector<'a> { - Range { - shard: &'a str, - sort_begin: &'a str, - sort_end: &'a str, - }, - List(Vec<RowRef>), // list of (shard_key, sort_key) - #[allow(dead_code)] - Prefix { - shard: &'a str, - sort_prefix: &'a str, - }, - Single(&'a RowRef), -} -impl<'a> std::fmt::Display for Selector<'a> { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - match self { - Self::Range { - shard, - sort_begin, - sort_end, - } => write!(f, "Range({}, [{}, {}[)", shard, sort_begin, sort_end), - Self::List(list) => write!(f, "List({:?})", list), - Self::Prefix { shard, sort_prefix } => write!(f, "Prefix({}, {})", shard, sort_prefix), - Self::Single(row_ref) => write!(f, "Single({})", row_ref), - } - } -} - -#[async_trait] -pub trait IStore { - async fn row_fetch<'a>(&self, select: &Selector<'a>) -> Result<Vec<RowVal>, StorageError>; - async fn row_rm<'a>(&self, select: &Selector<'a>) -> Result<(), StorageError>; - async fn row_insert(&self, values: Vec<RowVal>) -> Result<(), StorageError>; - async fn row_poll(&self, value: &RowRef) -> Result<RowVal, StorageError>; - - async fn blob_fetch(&self, blob_ref: &BlobRef) -> Result<BlobVal, StorageError>; - async fn blob_insert(&self, blob_val: BlobVal) -> Result<(), StorageError>; - async fn blob_copy(&self, src: &BlobRef, dst: &BlobRef) -> Result<(), StorageError>; - async fn blob_list(&self, prefix: &str) -> Result<Vec<BlobRef>, StorageError>; - async fn blob_rm(&self, blob_ref: &BlobRef) -> Result<(), StorageError>; -} - -#[derive(Clone, Debug, PartialEq, Eq, Hash)] -pub struct UnicityBuffer(Vec<u8>); - -#[async_trait] -pub trait IBuilder: std::fmt::Debug { - async fn build(&self) -> Result<Store, StorageError>; - - /// Returns an opaque buffer that uniquely identifies this builder - fn unique(&self) -> UnicityBuffer; -} - -pub type Builder = Arc<dyn IBuilder + Send + Sync>; -pub type Store = Box<dyn IStore + Send + Sync>; |