2 lines
9.9 KiB
JavaScript
2 lines
9.9 KiB
JavaScript
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"use strict";var u=Object.defineProperty;var m=Object.getOwnPropertyDescriptor;var f=Object.getOwnPropertyNames;var b=Object.prototype.hasOwnProperty;var w=(s,o)=>{for(var e in o)u(s,e,{get:o[e],enumerable:!0})},k=(s,o,e,t)=>{if(o&&typeof o=="object"||typeof o=="function")for(let i of f(o))!b.call(s,i)&&i!==e&&u(s,i,{get:()=>o[i],enumerable:!(t=m(o,i))||t.enumerable});return s};var E=s=>k(u({},"__esModule",{value:!0}),s);var P={};w(P,{CONNECTION_QUEUE_TIMEOUT:()=>p,PGLiteSocketHandler:()=>l,PGLiteSocketServer:()=>g});module.exports=E(P);var v=require("net"),p=6e4,d=class d extends EventTarget{constructor(e){super();this.socket=null;this.active=!1;this.db=e.db,this.closeOnDetach=e.closeOnDetach??!1,this.inspect=e.inspect??!1,this.debug=e.debug??!1,this.id=d.nextHandlerId++,this.log("constructor: created new handler")}get handlerId(){return this.id}log(e,...t){this.debug&&console.log(`[PGLiteSocketHandler#${this.id}] ${e}`,...t)}async attach(e){if(this.log(`attach: attaching socket from ${e.remoteAddress}:${e.remotePort}`),this.socket)throw new Error("Socket already attached");return this.socket=e,this.active=!0,this.log("attach: waiting for PGlite to be ready"),await this.db.waitReady,this.log("attach: acquiring exclusive lock on PGlite instance"),await new Promise(t=>{this.db.runExclusive(()=>(t(),new Promise((i,n)=>{this.resolveLock=i,this.rejectLock=n})))}),this.log("attach: setting up socket event handlers"),e.on("data",async t=>{try{let i=await this.handleData(t);this.log(`socket on data sent: ${i} bytes`)}catch(i){this.log("socket on data error: ",i)}}),e.on("error",t=>this.handleError(t)),e.on("close",()=>this.handleClose()),this}detach(e){return this.log(`detach: detaching socket, close=${e??this.closeOnDetach}`),this.socket?(this.socket.removeAllListeners("data"),this.socket.removeAllListeners("error"),this.socket.removeAllListeners("close"),(e??this.closeOnDetach)&&this.socket.writable&&(this.log("detach: closing socket"),this.socket.end(),this.socket.destroy()),this.log("detach: releasing exclusive lock on PGlite instance"),this.resolveLock?.(),this.socket=null,this.active=!1,this):(this.log("detach: no socket attached, nothing to do"),this)}get isAttached(){return this.socket!==null}async handleData(e){if(!this.socket||!this.active)return this.log("handleData: no active socket, ignoring data"),new Promise((t,i)=>i("no active socket"));this.log(`handleData: received ${e.length} bytes`),this.inspectData("incoming",e);try{this.log("handleData: sending data to PGlite for processing");let t=await this.db.execProtocolRaw(new Uint8Array(e));if(this.log(`handleData: received ${t.length} bytes from PGlite`),this.inspectData("outgoing",t),this.socket&&this.socket.writable&&this.active){if(t.length<=0)return this.log("handleData: cowardly refusing to send empty packet"),new Promise((n,r)=>r("no data"));let i=new Promise((n,r)=>{this.log("handleData: writing response to socket"),this.socket?this.socket.write(Buffer.from(t),a=>{a?r(`Error while writing to the socket ${a.toString()}`):n(t.length)}):r("No socket")});return this.dispatchEvent(new CustomEvent("data",{detail:{incoming:e.length,outgoing:t.length}})),i}else return this.log("handleData: socket no longer writable or active, discarding response"),new Promise((i,n)=>n("No socket, not active or not writeable"))}catch(t){return this.log("handleData: error processing data:",t),this.handleError(t),new Promise((i,n)=>n(`Error while processing data ${t.toString()}`))}}handleError(e){this.log("handleError:",e),this.dispatchEvent(new CustomEvent("error",{detail:e})),this.log("handleError: rejecting exclusive lock on PGlite instance"),this.rejectLock?.(e),this.resolveLock=void 0,this.rejectLock=void 0,this.detach(!0)}handleClose(){this.log("handleClose: socket closed"),this.dispatchEvent(new CustomEvent("close")),this.detach(!1)}inspectData(e,t){if(this.inspect){console.log("-".repeat(75)),console.log(e==="incoming"?"-> incoming":"<- outgoing",t.length,"bytes");for(let i=0;i<t.length;i+=16){let n=Math.min(16,t.length-i),r="";for(let c=0;c<16;c++)if(c<n){let h=t[i+c];r+=h.toS
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