in-memory storage #32
4 changed files with 181 additions and 51 deletions
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@ -1,6 +1,4 @@
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#![feature(async_fn_in_trait)]
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#![feature(async_fn_in_trait)]
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#![feature(return_position_impl_trait_in_trait)]
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// should be stabilized soon https://github.com/rust-lang/rust/pull/115822
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mod bayou;
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mod bayou;
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mod config;
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mod config;
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@ -0,0 +1,96 @@
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use crate::storage::*;
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pub struct GrgCreds {}
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pub struct GrgStore {}
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pub struct GrgRef {}
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pub struct GrgValue {}
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pub struct GrgTypes {}
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impl RowRealization for GrgTypes {
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type Store=GrgStore;
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type Ref=GrgRef;
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type Value=GrgValue;
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}
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impl RowBuilder<GrgTypes> for GrgCreds {
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fn row_store(&self) -> GrgStore {
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unimplemented!();
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}
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}
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impl RowStore<GrgTypes> for GrgStore {
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fn new_row(&self, partition: &str, sort: &str) -> GrgRef {
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unimplemented!();
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}
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}
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impl RowRef<GrgTypes> for GrgRef {
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fn set_value(&self, content: Vec<u8>) -> GrgValue {
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unimplemented!();
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}
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async fn fetch(&self) -> Result<GrgValue, Error> {
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unimplemented!();
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}
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async fn rm(&self) -> Result<(), Error> {
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unimplemented!();
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}
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async fn poll(&self) -> Result<Option<GrgValue>, Error> {
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unimplemented!();
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}
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}
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impl RowValue<GrgTypes> for GrgValue {
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fn to_ref(&self) -> GrgRef {
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unimplemented!();
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}
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fn content(&self) -> ConcurrentValues {
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unimplemented!();
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}
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async fn push(&self) -> Result<(), Error> {
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unimplemented!();
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}
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}
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/*
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/// A custom S3 region, composed of a region name and endpoint.
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/// We use this instead of rusoto_signature::Region so that we can
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/// derive Hash and Eq
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#[derive(Clone, Debug, Hash, PartialEq, Eq)]
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pub struct Region {
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pub name: String,
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pub endpoint: String,
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}
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impl Region {
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pub fn as_rusoto_region(&self) -> rusoto_signature::Region {
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rusoto_signature::Region::Custom {
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name: self.name.clone(),
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endpoint: self.endpoint.clone(),
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}
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}
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}
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*/
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/*
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pub struct Garage {
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pub s3_region: Region,
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pub k2v_region: Region,
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pub aws_access_key_id: String,
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pub aws_secret_access_key: String,
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pub bucket: String,
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}
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impl StoreBuilder<> for Garage {
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fn row_store(&self) ->
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}
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pub struct K2V {}
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impl RowStore for K2V {
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}*/
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@ -0,0 +1,54 @@
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use crate::storage::*;
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pub struct MemCreds {}
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pub struct MemStore {}
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pub struct MemRef {}
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pub struct MemValue {}
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pub struct MemTypes {}
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impl RowRealization for MemTypes {
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type Store=MemStore;
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type Ref=MemRef;
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type Value=MemValue;
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}
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impl RowBuilder<MemTypes> for MemCreds {
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fn row_store(&self) -> MemStore {
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unimplemented!();
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}
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}
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impl RowStore<MemTypes> for MemStore {
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fn new_row(&self, partition: &str, sort: &str) -> MemRef {
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unimplemented!();
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}
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}
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impl RowRef<MemTypes> for MemRef {
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fn set_value(&self, content: Vec<u8>) -> MemValue {
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unimplemented!();
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}
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async fn fetch(&self) -> Result<MemValue, Error> {
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unimplemented!();
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}
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async fn rm(&self) -> Result<(), Error> {
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unimplemented!();
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}
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async fn poll(&self) -> Result<Option<MemValue>, Error> {
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unimplemented!();
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}
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}
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impl RowValue<MemTypes> for MemValue {
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fn to_ref(&self) -> MemRef {
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unimplemented!();
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}
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fn content(&self) -> ConcurrentValues {
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unimplemented!();
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}
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async fn push(&self) -> Result<(), Error> {
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unimplemented!();
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}
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}
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@ -1,19 +1,14 @@
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/*
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/*
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* T1 : Filter
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* T2 : Range
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* T3 : Atom
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*/
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/*
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* My idea: we can encapsulate the causality token
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* into the object system so it is not exposed.
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*
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*
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* This abstraction goal is to leverage all the semantic of Garage K2V+S3,
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* This abstraction goal is to leverage all the semantic of Garage K2V+S3,
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* to be as tailored as possible to it ; it aims to be a zero-cost abstraction
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* to be as tailored as possible to it ; it aims to be a zero-cost abstraction
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* compared to when we where directly using the K2V+S3 client.
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* compared to when we where directly using the K2V+S3 client.
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*
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* My idea: we can encapsulate the causality token
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* into the object system so it is not exposed.
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*/
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*/
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mod in_memory;
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mod garage;
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mod garage;
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pub enum Selector<'a> {
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pub enum Selector<'a> {
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@ -27,55 +22,42 @@ pub enum Alternative {
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}
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}
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type ConcurrentValues = Vec<Alternative>;
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type ConcurrentValues = Vec<Alternative>;
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#[derive(Debug)]
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pub enum Error {
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pub enum Error {
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NotFound,
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NotFound,
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Internal,
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Internal,
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}
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}
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// ------ Store
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pub trait RowRealization: Sized {
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pub trait RowStore {
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type Store: RowStore<Self>;
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fn new_row(&self, partition: &str, sort: &str) -> impl RowRef;
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type Ref: RowRef<Self>;
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fn new_row_batch(&self, partition: &str, filter: Selector) -> impl RowRefBatch;
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type Value: RowValue<Self>;
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fn new_blob(&self, key: &str) -> impl BlobRef;
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fn new_blob_list(&self) -> Vec<impl BlobRef>;
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}
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}
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// ------- Row
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// ------ Row Builder
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pub trait RowRef {
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pub trait RowBuilder<R: RowRealization>
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fn to_value(&self, content: &[u8]) -> impl RowValue;
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{
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async fn get(&self) -> Result<impl RowValue, Error>;
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fn row_store(&self) -> R::Store;
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}
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// ------ Row Store
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pub trait RowStore<R: RowRealization>
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{
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fn new_row(&self, partition: &str, sort: &str) -> R::Ref;
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}
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// ------- Row Item
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pub trait RowRef<R: RowRealization>
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{
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fn set_value(&self, content: Vec<u8>) -> R::Value;
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async fn fetch(&self) -> Result<R::Value, Error>;
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async fn rm(&self) -> Result<(), Error>;
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async fn rm(&self) -> Result<(), Error>;
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async fn poll(&self) -> Result<Option<impl RowValue>, Error>;
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async fn poll(&self) -> Result<Option<R::Value>, Error>;
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}
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}
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pub trait RowValue {
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pub trait RowValue<R: RowRealization>
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fn row_ref(&self) -> impl RowRef;
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{
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fn to_ref(&self) -> R::Ref;
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fn content(&self) -> ConcurrentValues;
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fn content(&self) -> ConcurrentValues;
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async fn persist(&self) -> Result<(), Error>;
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async fn push(&self) -> Result<(), Error>;
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}
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// ------ Row batch
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pub trait RowRefBatch {
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fn to_values(&self, content: Vec<&[u8]>) -> impl RowValueBatch;
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fn into_independant(&self) -> Vec<impl RowRef>;
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async fn get(&self) -> Result<impl RowValueBatch, Error>;
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async fn rm(&self) -> Result<(), Error>;
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}
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pub trait RowValueBatch {
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fn into_independant(&self) -> Vec<impl RowValue>;
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fn content(&self) -> Vec<ConcurrentValues>;
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async fn persist(&self) -> Result<(), Error>;
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}
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// ----- Blobs
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pub trait BlobRef {
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fn set_value(&self, content: &[u8]) -> impl BlobValue;
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async fn get(&self) -> impl BlobValue;
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async fn copy(&self, dst: &impl BlobRef) -> ();
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async fn rm(&self, key: &str) -> ();
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}
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pub trait BlobValue {
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async fn persist();
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}
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}
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