//////////////////
let store =
{
   entries:[]
};
//////////////////
function generateRandomKeys(numkeys,keylength,sessionid,store){
  function* KeysGen()
  {

    let keys=[];

    if(store.entries[sessionid]===null || store.entries[sessionid]===undefined){
      store.entries[sessionid] =
      {
        status:0,
        keys:[]
      }
    }

    function KeyGen()
    {
      let key=[];
      for(let i=0;i<keylength;i++)
      {
        key.push(Math.round(Math.random()*256).toString(16));
      }
      return key.join('');
    }
    for(let i=0;i<numkeys;i++)
    {
      keys.push(KeyGen());
      store.entries[sessionid].status=Math.round((i/numkeys)*100);
      yield;
    }
    store.entries[sessionid].keys = keys;
    return;
  }

  const kg = KeysGen();

  function KeysGenIter()
  {
    const a = kg.next();
    if(!a.done)
      setTimeout(KeysGenIter,50);
    else
      console.log('session processing '+ sessionid+' done, '+numkeys+' generated.');
  }

  KeysGenIter();
  console.log('session processing '+ sessionid+' started');
}
/////////////////////////////////////////////////////
generateRandomKeys(1000,128,356356,store);
generateRandomKeys(1000,128,356352,store);
generateRandomKeys(1000,128,435424,store);
generateRandomKeys(1000,128,623456,store);
generateRandomKeys(1000,128,246285,store);