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// Sonic
//
// Fast, lightweight and schema-less search backend
// Copyright: 2019, Valerian Saliou <valerian@valeriansaliou.name>
// License: Mozilla Public License v2.0 (MPL v2.0)
use crate::store::item::StoreItem;
use crate::store::kv::{StoreKVAcquireMode, StoreKVActionBuilder, StoreKVPool};
pub struct ExecutorFlushO;
impl ExecutorFlushO {
pub fn execute(store: StoreItem) -> Result<u32, ()> {
if let StoreItem(collection, Some(bucket), Some(object)) = store {
// Important: acquire database access read lock, and reference it in context. This \
// prevents the database from being erased while using it in this block.
general_kv_access_lock_read!();
if let Ok(kv_store) = StoreKVPool::acquire(StoreKVAcquireMode::OpenOnly, collection) {
// Important: acquire bucket store write lock
executor_kv_lock_write!(kv_store);
let kv_action = StoreKVActionBuilder::access(bucket, kv_store);
// Try to resolve existing OID to IID (if it does not exist, there is nothing to \
// be flushed)
let oid = object.as_str();
if let Ok(iid_value) = kv_action.get_oid_to_iid(oid) {
let mut count_flushed = 0;
if let Some(iid) = iid_value {
// Resolve terms associated to IID
let iid_terms = {
if let Ok(iid_terms_value) = kv_action.get_iid_to_terms(iid) {
iid_terms_value.unwrap_or_default()
} else {
error!("failed getting flusho executor iid-to-terms");
Vec::new()
}
};
// Flush bucket (batch operation, as it is shared w/ other executors)
if let Ok(batch_count) = kv_action.batch_flush_bucket(iid, oid, &iid_terms)
{
count_flushed += batch_count;
} else {
error!("failed executing batch-flush-bucket in flusho executor");
}
}
return Ok(count_flushed);
} else {
error!("failed getting flusho executor oid-to-iid");
}
}
}
Err(())
}
}