tx2uml/lib/plantuml.js

Ethereum transaction visualizer that generates UML sequence diagrams.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.genPumlJavaOptions = exports.streamPlantUml = void 0;
const child_process_1 = require("child_process");
const path_1 = __importDefault(require("path"));
const debug = require("debug")("tx2uml");
const streamPlantUml = async (pumlStream, outputStream, options) => {
    const pumlJavaOptions = (0, exports.genPumlJavaOptions)(options);
    return pipePuml(pumlStream, outputStream, pumlJavaOptions);
};
exports.streamPlantUml = streamPlantUml;
const genPumlJavaOptions = (options) => {
    const plantUmlOptions = options.memory
        ? [`-Xmx${options.memory}g`]
        : [];
    plantUmlOptions.push("-jar", path_1.default.join(__dirname, "./plantuml.jar"), "-Djava.awt.headless=true", "-DPLANTUML_LIMIT_SIZE=64000", "-pipe");
    if (options?.format) {
        plantUmlOptions.push("-t" + options.format);
    }
    if (options.config) {
        plantUmlOptions.push("-config", options.config);
    }
    debug("PlantUML Java process options " + plantUmlOptions);
    return plantUmlOptions;
};
exports.genPumlJavaOptions = genPumlJavaOptions;
const pipePuml = (pumlStream, outputStream, plantUmlOptions) => {
    return new Promise(async (resolve, reject) => {
        const child = (0, child_process_1.spawn)("java", plantUmlOptions, { detached: true });
        pumlStream.pipe(child.stdin);
        child.stdout.pipe(outputStream);
        let error = "";
        for await (const chunk of child.stderr) {
            error += chunk;
        }
        child.once("exit", code => {
            if (code === 0) {
                resolve(code);
            }
            else {
                console.error(error);
                reject(new Error(`PlantUML process existed with status code ${code}. ${error}`));
            }
        });
        child.once("error", err => {
            reject(new Error(`PlantUML process failed with error: ${error}`, {
                cause: err,
            }));
        });
    });
};
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