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use crate::holochain_json_api::json::RawString;
use cas::content::{AddressableContent, ExampleAddressableContent};
use eav::{
eavi::{EntityAttributeValueIndex, ExampleAttribute},
query::EaviQuery,
Attribute, EavFilter, IndexFilter,
};
use error::PersistenceResult;
use objekt;
use reporting::ReportStorage;
use std::{
collections::BTreeSet,
fmt::Debug,
sync::{Arc, RwLock},
};
pub trait EntityAttributeValueStorage<A: Attribute>:
objekt::Clone + Send + Sync + Debug + ReportStorage
{
fn add_eavi(
&mut self,
eav: &EntityAttributeValueIndex<A>,
) -> PersistenceResult<Option<EntityAttributeValueIndex<A>>>;
fn fetch_eavi(
&self,
query: &EaviQuery<A>,
) -> PersistenceResult<BTreeSet<EntityAttributeValueIndex<A>>>;
}
clone_trait_object!(<A:Attribute>EntityAttributeValueStorage<A>);
#[derive(Clone, Debug, Default)]
pub struct ExampleEntityAttributeValueStorage<A: Attribute> {
storage: Arc<RwLock<BTreeSet<EntityAttributeValueIndex<A>>>>,
}
impl<A: Attribute> ExampleEntityAttributeValueStorage<A> {
pub fn new() -> ExampleEntityAttributeValueStorage<A>
where
A: std::default::Default,
{
Default::default()
}
}
impl<A: Attribute> EntityAttributeValueStorage<A> for ExampleEntityAttributeValueStorage<A>
where
A: std::marker::Send + std::marker::Sync,
{
fn add_eavi(
&mut self,
eav: &EntityAttributeValueIndex<A>,
) -> PersistenceResult<Option<EntityAttributeValueIndex<A>>> {
let mut map = self.storage.write()?;
let new_eav = increment_key_till_no_collision(eav.clone(), map.clone())?;
map.insert(new_eav.clone());
Ok(Some(new_eav))
}
fn fetch_eavi(
&self,
query: &EaviQuery<A>,
) -> PersistenceResult<BTreeSet<EntityAttributeValueIndex<A>>> {
let lock = self.storage.read()?;
let set = (*lock).clone();
let iter = set.iter().cloned();
Ok(query.run(iter))
}
}
impl<A: Attribute> ReportStorage for ExampleEntityAttributeValueStorage<A> {}
impl<A: Attribute> PartialEq for dyn EntityAttributeValueStorage<A> {
fn eq(&self, other: &dyn EntityAttributeValueStorage<A>) -> bool {
let query = EaviQuery::default();
self.fetch_eavi(&query) == other.fetch_eavi(&query)
}
}
pub fn increment_key_till_no_collision<A: Attribute>(
mut eav: EntityAttributeValueIndex<A>,
map: BTreeSet<EntityAttributeValueIndex<A>>,
) -> PersistenceResult<EntityAttributeValueIndex<A>> {
if map.iter().any(|e| e.index() == eav.index()) {
let timestamp = eav.clone().index() + 1;
eav.set_index(timestamp);
increment_key_till_no_collision(eav, map)
} else {
Ok(eav)
}
}
pub struct EavBencher;
impl EavBencher {
fn random_addressable_content() -> ExampleAddressableContent {
let s: String = (0..4).map(|_| rand::random::<char>()).collect();
ExampleAddressableContent::try_from_content(&RawString::from(s).into()).unwrap()
}
pub fn bench_add(
b: &mut test::Bencher,
mut store: impl EntityAttributeValueStorage<ExampleAttribute>,
) {
b.iter(|| {
let eav = EntityAttributeValueIndex::new(
&Self::random_addressable_content().address(),
&ExampleAttribute::WithPayload("favourite-color".to_string()),
&Self::random_addressable_content().address(),
)
.expect("Could create entityAttributeValue");
store.add_eavi(&eav)
})
}
pub fn bench_fetch_all(
b: &mut test::Bencher,
mut store: impl EntityAttributeValueStorage<ExampleAttribute>,
) {
for _ in 0..100 {
let eav = EntityAttributeValueIndex::new(
&Self::random_addressable_content().address(),
&ExampleAttribute::WithPayload("favourite-color".to_string()),
&Self::random_addressable_content().address(),
)
.expect("Could create entityAttributeValue");
store.add_eavi(&eav).unwrap();
}
b.iter(|| store.fetch_eavi(&EaviQuery::default()))
}
pub fn bench_fetch_exact(
b: &mut test::Bencher,
mut store: impl EntityAttributeValueStorage<ExampleAttribute>,
) {
for _ in 0..100 {
let eav = EntityAttributeValueIndex::new(
&Self::random_addressable_content().address(),
&ExampleAttribute::WithPayload("favourite-color".to_string()),
&Self::random_addressable_content().address(),
)
.expect("Could create entityAttributeValue");
store.add_eavi(&eav).unwrap();
}
let eav = EntityAttributeValueIndex::new(
&Self::random_addressable_content().address(),
&ExampleAttribute::WithPayload("favourite-color".to_string()),
&Self::random_addressable_content().address(),
)
.expect("Could create entityAttributeValue");
store.add_eavi(&eav).unwrap();
b.iter(|| {
store.fetch_eavi(&EaviQuery::new(
EavFilter::single(eav.entity()),
EavFilter::default(),
EavFilter::default(),
IndexFilter::LatestByAttribute,
None,
))
})
}
}