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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | 1x 1x 1x 1x 1x 37x 37x 37x 37x 37x 1x 37x 37x 37x 37x 37x 37x 37x 37x 37x 37x 1x 37x 37x 1x 37x 3x 37x 37x 37x 37x 145x 37x 108x 36x 2x 72x 36x 4x 36x 36x 37x 2886x 2886x 37x 1x 1x 121x 121x 121x 1x 2886x 2886x 2886x 2886x 2886x 3x 2883x 2886x 13554x 13554x 2883x 10671x 10671x 10671x 10671x 85x 85x 85x 85x 85x 1x 1x | import { Processor, ProcessLineResult } from "./Processor";
import P from "bluebird"
import { Converter } from "./Converter";
import { ChildProcess } from "child_process";
import { CSVParseParam, mergeParams } from "./Parameters";
import { ParseRuntime } from "./ParseRuntime";
import { Readable, Writable } from "stream";
import { bufFromString, emptyBuffer } from "./util";
import CSVError from "./CSVError";
export class ProcessorFork extends Processor {
flush(): P<ProcessLineResult[]> {
return new P((resolve, reject) => {
// console.log("flush");
this.finalChunk = true;
this.next = resolve;
this.childProcess.stdin.end();
});
}
destroy(): P<void> {
this.childProcess.kill();
return P.resolve();
}
childProcess: ChildProcess;
inited: boolean = false;
private resultBuf: ProcessLineResult[] = [];
private leftChunk: string = "";
private finalChunk: boolean = false;
private next?: (result: ProcessLineResult[]) => any;
constructor(protected converter: Converter) {
super(converter);
this.childProcess = require("child_process").spawn(process.execPath, [__dirname + "/../v2/worker.js"], {
stdio: ["pipe", "pipe", "pipe", "ipc"]
});
this.initWorker();
}
private prepareParam(param:CSVParseParam):any{
const clone:any=mergeParams(param);
if (clone.ignoreColumns){
clone.ignoreColumns={
source:clone.ignoreColumns.source,
flags:clone.ignoreColumns.flags
}
}
if (clone.includeColumns){
clone.includeColumns={
source:clone.includeColumns.source,
flags:clone.includeColumns.flags
}
}
return clone;
}
private initWorker() {
this.childProcess.send({
cmd: "init",
params: this.prepareParam(this.converter.parseParam)
} as InitMessage);
this.childProcess.on("message", (msg: Message) => {
if (msg.cmd === "inited") {
this.inited = true;
} else if (msg.cmd === "eol") {
if (this.converter.listeners("eol").length > 0){
this.converter.emit("eol",(msg as StringMessage).value);
}
}else if (msg.cmd === "header") {
if (this.converter.listeners("header").length > 0){
this.converter.emit("header",(msg as StringMessage).value);
}
}else Eif (msg.cmd === "done"){
this.flushResult();
}
});
this.childProcess.stdout.on("data", (data) => {
// console.log("stdout", data.toString());
const res = data.toString();
this.appendBuf(res);
});
this.childProcess.stderr.on("data", (data) => {
// console.log("stderr", data.toString());
this.converter.emit("error", CSVError.fromJSON(JSON.parse(data.toString())));
});
}
private flushResult() {
// console.log("flush result", this.resultBuf.length);
Eif (this.next) {
this.next(this.resultBuf);
}
this.resultBuf = [];
}
private appendBuf(data: string) {
const res = this.leftChunk + data;
const list = res.split("\n");
let counter = 0;
const lastBit = list[list.length - 1];
if (lastBit !== "") {
this.leftChunk = list.pop() || "";
} else {
this.leftChunk = "";
}
while (list.length) {
let item = list.shift() || "";
if (item.length === 0 ) {
continue;
}
Eif (this.params.output !== "line") {
item = JSON.parse(item);
}
this.resultBuf.push(item);
counter++;
}
}
process(chunk: Buffer): P<ProcessLineResult[]> {
return new P((resolve, reject) => {
// console.log("chunk", chunk.length);
this.next = resolve;
// this.appendReadBuf(chunk);
this.childProcess.stdin.write(chunk, () => {
// console.log("chunk callback");
this.flushResult();
});
});
}
}
export interface Message {
cmd: string
}
export interface InitMessage extends Message {
params: any;
}
export interface StringMessage extends Message {
value: string
}
export const EOM = "\x03"; |