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use crate::module::get_storage_use_prop;
use nng::{Message, Protocol, Socket};
use std::cell::RefCell;
use std::str;
use std::sync::Mutex;
use uuid::Uuid;
use v_onto::individual::{Individual, RawObj};
use v_storage::remote_storage_client::*;
use v_storage::storage::*;
lazy_static! {
pub static ref STORAGE: Mutex<RefCell<StorageROClient>> = Mutex::new(RefCell::new(StorageROClient::default()));
}
pub fn inproc_storage_manager() -> std::io::Result<()> {
let ro_storage_url = "inproc://nng/".to_owned() + &Uuid::new_v4().to_hyphenated().to_string();
STORAGE.lock().unwrap().get_mut().addr = ro_storage_url.to_owned();
let mut storage = get_storage_use_prop(StorageMode::ReadOnly);
let server = Socket::new(Protocol::Rep0)?;
if let Err(e) = server.listen(&ro_storage_url) {
error!("fail listen, {:?}", e);
return Ok(());
}
loop {
if let Ok(recv_msg) = server.recv() {
let res = req_prepare(&recv_msg, &mut storage);
if let Err(e) = server.send(res) {
error!("fail send {:?}", e);
}
}
}
}
fn req_prepare(request: &Message, storage: &mut VStorage) -> Message {
if let Ok(id) = str::from_utf8(request.as_slice()) {
let binobj = storage.get_raw_value(StorageId::Individuals, id);
if binobj.is_empty() {
return Message::from("[]".as_bytes());
}
return Message::from(binobj.as_slice());
}
Message::default()
}
pub fn get_individual(id: &str) -> Option<Individual> {
let req = Message::from(id.to_string().as_bytes());
let mut sh_client = STORAGE.lock().unwrap();
let client = sh_client.get_mut();
if !client.is_ready {
client.connect();
}
if !client.is_ready {
return None;
}
if let Err(e) = client.soc.send(req) {
error!("fail send to storage_manager, err={:?}", e);
return None;
}
let wmsg = client.soc.recv();
if let Err(e) = wmsg {
error!("fail recv from main module, err={:?}", e);
return None;
}
drop(sh_client);
if let Ok(msg) = wmsg {
let data = msg.as_slice();
if data == b"[]" {
return None;
}
return Some(Individual::new_raw(RawObj::new(data.to_vec())));
}
None
}