测试：judger封装为模块

build/buildModule.js

@@ -30,7 +30,9 @@ const build = async (type) => {
         module: {},
         plugins: [
             new webpack.ProgressPlugin(),
-            new FriendlyErrorsPlugin(),
+            new FriendlyErrorsPlugin({
+                clearConsole: false,
+            }),
         ],
     };
     for (const i of modules) {
@@ -90,11 +92,19 @@ const build = async (type) => {
             if (exist(`module/${i}/template`)) {
                 current.template = template(`module/${i}/template`);
             }
+            if (exist(`module/${i}/file`)) {
+                const files = fs.readdirSync(root(`module/${i}/file`));
+                current.file = {};
+                for (const file of files) {
+                    current.file[file] = fs.readFileSync(root(`module/${i}/file/${file}`)).toString('base64');
+                }
+            }
             const m = require(root(`module/${i}/hydro.json`));
             current.description = m.description || '';
             current.requirements = m.requirements || [];
             current.version = m.version || 'unknown';
-            const data = zlib.gzipSync(Buffer.from(yaml.safeDump(current)), { level: 3 });
+            if (m.os) current.os = m.os;
+            const data = zlib.gzipSync(Buffer.from(yaml.safeDump(current)), { level: -1 });
             fs.writeFileSync(root(`.build/module/${i}.hydro`), data);
         }
     }

build/webpack.js

@@ -34,7 +34,9 @@ const build = async (type) => {
         module: {},
         plugins: [
             new webpack.ProgressPlugin(),
-            new FriendlyErrorsPlugin(),
+            new FriendlyErrorsPlugin({
+                clearConsole: false,
+            }),
         ],
     };
     const compiler = webpack(config);

hydro/loader.js

@@ -2,6 +2,7 @@
 /* eslint-disable no-await-in-loop */
 /* eslint-disable no-eval */
 const fs = require('fs');
+const os = require('os');
 const zlib = require('zlib');
 const path = require('path');
 const yaml = require('js-yaml');
@@ -9,6 +10,14 @@ const yaml = require('js-yaml');
 function root(name) {
     return path.resolve(process.cwd(), name);
 }
+function ensureDir(dir) {
+    if (!fs.existsSync(dir)) {
+        fs.mkdirSync(dir);
+    } else if (!fs.statSync(dir).isDirectory()) {
+        fs.unlinkSync(dir);
+        fs.mkdirSync(dir);
+    }
+}
 
 const active = [];
 
@@ -16,8 +25,25 @@ async function preload() {
     const files = fs.readdirSync(root('.build/module'));
     for (const file of files) {
         if (file.endsWith('.hydro')) {
-            const f = fs.readFileSync(root(`.build/module/${file}`));
-            active.push({ ...yaml.safeLoad(zlib.gunzipSync(f)), id: file.split('.')[0] });
+            try {
+                const f = fs.readFileSync(root(`.build/module/${file}`));
+                const m = { ...yaml.safeLoad(zlib.gunzipSync(f)), id: file.split('.')[0] };
+                if (m.os) {
+                    if (!m.os.includes(os.platform())) throw new Error('Unsupported OS');
+                }
+                if (m.file) {
+                    m.files = {};
+                    ensureDir(path.resolve(os.tmpdir(), 'hydro', file));
+                    for (const n in m.file) {
+                        const e = path.resolve(os.tmpdir(), 'hydro', file, n);
+                        fs.writeFileSync(e, Buffer.from(m.file[n], 'base64'), { mode: 755 });
+                        m.files[n] = e;
+                    }
+                }
+                active.push(m);
+            } catch (e) {
+                console.error(`Module Load Fail: ${file}`);
+            }
         }
     }
 }
@@ -25,11 +51,16 @@ async function preload() {
 async function handler() {
     for (const i of active) {
         if (i.handler) {
-            console.time(`Handler init: ${i.id}`);
-            const exports = {};
-            const module = { exports }; // eslint-disable-line no-unused-vars
-            eval(i.handler);
-            console.timeEnd(`Handler init: ${i.id}`);
+            try {
+                console.time(`Handler init: ${i.id}`);
+                const exports = {};
+                // eslint-disable-next-line no-unused-vars
+                const module = { exports, file: i.files || {} };
+                eval(i.handler);
+                console.timeEnd(`Handler init: ${i.id}`);
+            } catch (e) {
+                console.error(`Handler Load Fail: ${i.id}`);
+            }
         }
     }
 }
@@ -37,8 +68,12 @@ async function handler() {
 async function locale() {
     for (const i of active) {
         if (i.locale) {
-            global.Hydro.lib.i18n(i.locale);
-            console.log(`Locale init: ${i.id}`);
+            try {
+                global.Hydro.lib.i18n(i.locale);
+                console.log(`Locale init: ${i.id}`);
+            } catch (e) {
+                console.error(`Locale Load Fail: ${i.id}`);
+            }
         }
     }
 }
@@ -46,8 +81,12 @@ async function locale() {
 async function template() {
     for (const i of active) {
         if (i.template) {
-            Object.assign(global.Hydro.template, i.template);
-            console.log(`Template init: ${i.id}`);
+            try {
+                Object.assign(global.Hydro.template, i.template);
+                console.log(`Template init: ${i.id}`);
+            } catch (e) {
+                console.error(`Template Load Fail: ${i.id}`);
+            }
         }
     }
 }
@@ -55,12 +94,33 @@ async function template() {
 async function model() {
     for (const i of active) {
         if (i.model) {
-            console.time(`Model init: ${i.id}`);
-            const exports = {}; // eslint-disable-line no-unused-vars
-            const module = { exports };
-            eval(i.model);
-            if ((module.exports || {}).index) await module.exports.index();
-            console.timeEnd(`Model init: ${i.id}`);
+            try {
+                console.time(`Model init: ${i.id}`);
+                const exports = {};
+                const module = { exports, file: i.files || {} };
+                eval(i.model);
+                if ((module.exports || {}).index) await module.exports.index();
+                console.timeEnd(`Model init: ${i.id}`);
+            } catch (e) {
+                console.error(`Model Load Fail: ${i.id}`);
+            }
+        }
+    }
+}
+
+async function lib() {
+    for (const i of active) {
+        if (i.lib) {
+            try {
+                console.time(`Lib init: ${i.id}`);
+                const exports = {};
+                // eslint-disable-next-line no-unused-vars
+                const module = { exports, file: i.files || {} };
+                eval(i.lib);
+                console.timeEnd(`Lib init: ${i.id}`);
+            } catch (e) {
+                console.error(`Lib Load Fail: ${i.id}`);
+            }
         }
     }
 }
@@ -68,17 +128,22 @@ async function model() {
 async function service() {
     for (const i of active) {
         if (i.service) {
-            console.time(`Service init: ${i.id}`);
-            const exports = {}; // eslint-disable-line no-unused-vars
-            const module = { exports };
-            eval(i.service);
-            if ((module.exports || {}).init) await module.exports.init();
-            console.timeEnd(`Service init: ${i.id}`);
+            try {
+                console.time(`Service init: ${i.id}`);
+                const exports = {}; // eslint-disable-line no-unused-vars
+                const module = { exports };
+                eval(i.service);
+                if ((module.exports || {}).init) await module.exports.init();
+                console.timeEnd(`Service init: ${i.id}`);
+            } catch (e) {
+                console.error(`Service Load Fail: ${i.id}`);
+            }
         }
     }
 }
 
 async function load() {
+    ensureDir(path.resolve(os.tmpdir(), 'hydro'));
     global.Hydro = {
         handler: {},
         service: {},
@@ -110,6 +175,7 @@ async function load() {
         'template', 'validator', 'nav',
     ];
     for (const i of builtinLib) require(`./lib/${i}`);
+    await lib();
     await locale();
     require('./service/gridfs');
     const server = require('./service/server');

hydro/model/record.js

@@ -81,9 +81,8 @@ async function judge(rid) {
     const rdoc = await get(rid);
     const pdoc = await problem.getById(rdoc.pid);
     await task.add({
-        event: 'judge',
+        type: 'judge',
         rid,
-        type: 0,
         pid: rdoc.pid,
         data: pdoc.data,
         lang: rdoc.lang,
@@ -96,9 +95,8 @@ async function rejudge(rid) {
     const rdoc = await get(rid);
     const pdoc = await problem.getById(rdoc.pid);
     await task.add({
-        event: 'judge',
+        type: 'judge',
         rid,
-        type: 0,
         pid: rdoc.pid,
         data: pdoc.data,
         lang: rdoc.lang,

module/judger/hydro.json

@@ -0,0 +1,5 @@
+{
+    "name": "judger",
+    "version": "1.0.0",
+    "description": "HydroJudger"
+}

module/judger/service.js

@@ -0,0 +1,165 @@
+// Webpack Required
+const fs = require('fs');
+const path = require('path');
+const child = require('child_process');
+
+async function postInit() {
+    const { mkdirp, rmdir, compilerText } = require('./HydroJudger/judger/utils');
+    const log = require('./HydroJudger/judger/log');
+    const { CACHE_DIR, TEMP_DIR } = require('./HydroJudger/judger/config');
+    const tmpfs = require('./HydroJudger/judger/tmpfs');
+    const { FormatError, CompileError, SystemError } = require('./HydroJudger/judger/error');
+    const { STATUS_COMPILE_ERROR, STATUS_SYSTEM_ERROR } = require('./HydroJudger/judger/status');
+    const readCases = require('./HydroJudger/judger/cases');
+    const judger = require('./HydroJudger/judger/judger');
+
+    const fsp = fs.promises;
+    const { problem, task } = global.Hydro.model;
+    const { judge } = global.Hydro.handler;
+
+    async function problemData(pid, savePath) {
+        const tmpFilePath = path.resolve(CACHE_DIR, `download_${pid}`);
+        const res = await problem.getData(pid);
+        const w = await fs.createWriteStream(tmpFilePath);
+        res.data.pipe(w);
+        await new Promise((resolve, reject) => {
+            w.on('finish', resolve);
+            w.on('error', reject);
+        });
+        mkdirp(path.dirname(savePath));
+        await new Promise((resolve, reject) => {
+            child.exec(`unzip ${tmpFilePath} -d ${savePath}`, (e) => {
+                if (e) reject(e);
+                else resolve();
+            });
+        });
+        await fsp.unlink(tmpFilePath);
+        await this.processData(savePath).catch();
+        return savePath;
+    }
+
+    async function cacheOpen(pid, version) {
+        const filePath = path.join(CACHE_DIR, pid);
+        if (fs.existsSync(filePath)) {
+            let ver;
+            try {
+                ver = fs.readFileSync(path.join(filePath, 'version')).toString();
+            } catch (e) { /* ignore */ }
+            if (version === ver) return filePath;
+            rmdir(filePath);
+        }
+        mkdirp(filePath);
+        await problemData(pid, filePath);
+        fs.writeFileSync(path.join(filePath, 'version'), version);
+        return filePath;
+    }
+
+    function getNext(that) {
+        that.nextId = 1;
+        that.nextWaiting = [];
+        return (data, id) => {
+            data.key = 'next';
+            data.rid = that.rid;
+            if (id) {
+                if (id === that.nextId) {
+                    judge.next(data);
+                    that.nextId++;
+                    let t = true;
+                    while (t) {
+                        t = false;
+                        for (const i in that.nextWaiting) {
+                            if (that.nextId === that.nextWaiting[i].id) {
+                                judge.next(that.nextWaiting[i].data);
+                                that.nextId++;
+                                that.nextWaiting.splice(i, 1);
+                                t = true;
+                            }
+                        }
+                    }
+                } else that.nextWaiting.push({ data, id });
+            } else judge.next(data);
+        };
+    }
+
+    function getEnd(rid) {
+        return (data) => {
+            data.key = 'end';
+            data.rid = rid;
+            log.log({
+                status: data.status,
+                score: data.score,
+                time_ms: data.time_ms,
+                memory_kb: data.memory_kb,
+            });
+            judge.end(data);
+        };
+    }
+
+    class JudgeTask {
+        constructor(request) {
+            this.stat = {};
+            this.stat.receive = new Date();
+            this.request = request;
+        }
+
+        async handle() {
+            try {
+                this.stat.handle = new Date();
+                this.event = this.request.event;
+                this.pid = this.request.pid;
+                this.rid = this.request.rid;
+                this.lang = this.request.lang;
+                this.code = this.request.code;
+                this.data = this.request.data;
+                this.next = getNext(this);
+                this.end = getEnd(this.rid);
+                this.tmpdir = path.resolve(TEMP_DIR, 'tmp', this.rid);
+                this.clean = [];
+                mkdirp(this.tmpdir);
+                tmpfs.mount(this.tmpdir, '64m');
+                log.submission(`${this.rid}`, { pid: this.pid });
+                if (!this.event) await this.submission();
+                else throw new SystemError(`Unsupported type: ${this.type}`);
+            } catch (e) {
+                if (e instanceof CompileError) {
+                    this.next({ compiler_text: compilerText(e.stdout, e.stderr) });
+                    this.end({
+                        status: STATUS_COMPILE_ERROR, score: 0, time_ms: 0, memory_kb: 0,
+                    });
+                } else if (e instanceof FormatError) {
+                    this.next({ judge_text: `${e.message}\n${JSON.stringify(e.params)}` });
+                    this.end({
+                        status: STATUS_SYSTEM_ERROR, score: 0, time_ms: 0, memory_kb: 0,
+                    });
+                } else {
+                    log.error(e);
+                    this.next({ judge_text: `${e.message}\n${e.stack}\n${JSON.stringify(e.params)}` });
+                    this.end({
+                        status: STATUS_SYSTEM_ERROR, score: 0, time_ms: 0, memory_kb: 0,
+                    });
+                }
+            }
+            for (const clean of this.clean) await clean().catch();
+            tmpfs.umount(this.tmpdir);
+            await rmdir(this.tmpdir);
+        }
+
+        async submission() {
+            this.stat.cache_start = new Date();
+            this.folder = await cacheOpen(this.pid, this.data);
+            this.stat.read_cases = new Date();
+            this.config = await readCases(
+                this.folder,
+                { detail: true },
+                { next: this.next },
+            );
+            this.stat.judge = new Date();
+            await judger[this.config.type || 'default'].judge(this);
+        }
+    }
+    task.consume((t) => {
+        (new JudgeTask(t)).handle();
+    });
+}
+
+module.exports = { postInit };

module/sandbox-linux/hydro.json

@@ -0,0 +1,6 @@
+{
+    "name": "sandbox-linux",
+    "version": "1.0.0",
+    "os": "Linux",
+    "description": "Sandbox service for linux"
+}

module/sandbox-linux/service.js

@@ -0,0 +1,23 @@
+const os = require('os');
+const child = require('child_process');
+
+const p = child.spawn(path.resolve(os.tmpdir(), 'hydro', 'sandbox-linux', 'executorserver', ['-silent']);
+if (!p.stdout) throw new Error('Cannot start executorserver');
+else {
+    p.stdout.on('data', (data) => {
+        const s = data.toString();
+        console.log(s.substr(0, s.length - 1));
+    });
+    p.stderr.on('data', (data) => {
+        const s = data.toString();
+        console.log(s.substr(0, s.length - 1));
+    });
+}
+p.on('error', (error) => console.error(error));
+
+async function stop() {
+    p.emit('exit');
+}
+
+
+module.exports = { stop };