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// use std::sync::Arc;
use crate::workers::Signal;
// use crate::workers::{debug_error,debug_message};
// use crate::workers::Debugger;
use crate::config::{
MapConfig,MapMessage,
MapRemoveMessage,MapAddMessage,MapGetMessage,
DiskConfig,DiskMessage,DiskAddMessage,DiskGetMessage,DiskRemoveMessage
};
// use tokio::sync::{Notify};
use gzb_binary_69::parser::writer::init as BinaryWriter;
use tokio::spawn as TokioSpawn;
use flume::unbounded;
use flume::Sender as FlumeSender;
// use crate::workers::{debug_error};
// use std::time::Instant;
// const DEBUG:bool = false;
// const ERROR:bool = true;
pub async fn init(config:MapConfig){
let (mut disk_sender,disk_receiver) = unbounded();
let disk_config = DiskConfig::new(
config.file_path.clone(),
config.min_que_size.clone(),
disk_receiver
);
for _ in 0..config.num_of_writers{
let hold_disk_config = disk_config.clone();
TokioSpawn(async move {
crate::disk::init(hold_disk_config).await;
});
}
let mut config = config;
loop{
let message:MapMessage;
match config.receiver.recv_async().await{
Ok(m)=>{
message = m;
},
Err(_)=>{
break;
}
}
match message{
MapMessage::Add(value)=>{
handle_add(&mut config,&mut disk_sender,value).await;
},
MapMessage::Get(value)=>{
handle_get(&mut config,&mut disk_sender,value).await;
},
MapMessage::Remove(value)=>{
handle_remove(&mut config,&mut disk_sender,value).await;
}
}
}
}
async fn handle_add(
config:&mut MapConfig,
disk_sender:&mut FlumeSender<DiskMessage>,
message:MapAddMessage
){
let value_len:usize = message.value.len();
let build_message_body:Vec<u8>;
match BinaryWriter(
message.index.to_be_bytes().to_vec(),
message.value
){
Ok(v)=>{
build_message_body = v;
},
Err(_)=>{
// println!("!!!");
Signal::error(message.signal).await;
return;
}
}
loop{
match config.reader.fill(message.index.to_be_bytes().to_vec(),value_len.clone()){
Ok(write)=>{
match disk_sender.send_async(DiskMessage::Add(
DiskAddMessage{
// debugger:message.debugger.clone(),
start_at:write.start as u64,
value:build_message_body,
signal:message.signal.clone()
}
)).await{
Ok(_)=>{
// debug_message("filled_passed-add-map",DEBUG);
},
Err(_)=>{
// debug_error("failed-send_disk_message-add-map",ERROR);
Signal::error(message.signal).await;
}
}
break;
},
Err(e)=>{
if e == "full"{
//expand map
match config.reader.expand(config.expand_size.clone() as usize){
Ok(_)=>{},
Err(_)=>{
// debug_error("failed-reader_expand-add-map",ERROR);
Signal::error(message.signal).await;
break;
}
}
//expand disk
let (signal,sleeper) = Signal::new();
match disk_sender.send_async(DiskMessage::Expand(signal.clone())).await{
Ok(_)=>{},
Err(_)=>{
// debug_error("failed-send_expand_message-add-map",ERROR);
Signal::error(message.signal).await;
break;
}
}
sleeper.notified().await;
if !Signal::check(&signal).await{
// debug_error("failed-expand_disk-add-map",ERROR);
Signal::error(message.signal).await;
break;
}
} else {
// debug_error("failed-reader_fill-add-map",ERROR);
Signal::error(message.signal).await;
break;
}
}//error
}//match fill
}//loop reader fill and expand
// println!("added in : {:?}",hold_time.elapsed());
}
async fn handle_remove(
config:&mut MapConfig,
disk_sender:&mut FlumeSender<DiskMessage>,
message:MapRemoveMessage
){
let boundry:(usize,usize);
let key = message.pointer.item_index.to_be_bytes().to_vec();
match config.reader.pointers.get(&key){
Some(pointer)=>{
boundry = pointer.0;
},
None=>{
Signal::error(message.signal).await;
return;
}
}
match config.reader.clear(&key){
Ok(_)=>{},
Err(_)=>{
Signal::error(message.signal).await;
return;
}
}
match disk_sender.send_async(DiskMessage::Remove(
DiskRemoveMessage{
boundry:boundry,
signal:message.signal.clone()
}
)).await{
Ok(_)=>{},
Err(_)=>{
Signal::error(message.signal).await;
}
}
}
async fn handle_get(
config:&mut MapConfig,
disk_sender:&mut FlumeSender<DiskMessage>,
message:MapGetMessage
){
let value_boundry:(usize,usize);
match config.reader.pointers.get(
&message.index.to_be_bytes().to_vec()
){
Some(pointer)=>{
value_boundry = pointer.1;
},
None=>{
Signal::error(message.signal).await;
return;
}
}
match disk_sender.send_async(DiskMessage::Get(
DiskGetMessage{
item_index:message.index,
map_index:config.map_index.clone(),
value_boundry:value_boundry,
signal:message.signal.clone()
}
)).await{
Ok(_)=>{},
Err(_)=>{
Signal::error(message.signal).await;
return;
}
}
}