diff --git a/config-example.json b/config-example.json
index 06d1a2a..c34c4f0 100644
--- a/config-example.json
+++ b/config-example.json
@@ -167,6 +167,7 @@
   ],
   "session_secret": "233",
   "judge_server_addr": "http://127.0.0.1:5284",
+  "rabbitMQ": "amqp://localhost/",
   "judge_token": "233",
   "email_jwt_secret": "test"
-}
\ No newline at end of file
+}
diff --git a/libs/judger.js b/libs/judger.js
index 638bbff..85b40e5 100644
--- a/libs/judger.js
+++ b/libs/judger.js
@@ -2,7 +2,33 @@ const enums = require('./enums'),
     rp = require('request-promise'),
     url = require('url');
 
+const amqp = require('amqplib');
 const util = require('util');
+const winston = require('winston');
+const msgPack = require('msgpack-lite');
+
+let amqpConnection;
+let publicChannel;
+
+async function connect () {
+    amqpConnection = await amqp.connect(syzoj.config.rabbitMQ);
+    publicChannel = await amqpConnection.createChannel();
+    await publicChannel.assertQueue('judge', {
+        maxPriority: 5,
+        durable: true
+    });
+    await publicChannel.assertQueue('result', {
+        durable: true
+    });
+    await publicChannel.assertExchange('progress', 'fanout', {
+        durable: false
+    });
+    amqpConnection.on('error', (err) => {
+        winston.error('RabbitMQ connection failure: ${err.toString()}');
+        amqpConnection.close();
+        process.exit(1);
+    });
+}
 module.exports.judge = async function (judge_state, problem, priority) {
     let type, param, extraFile = null;
     switch (problem.type) {
@@ -44,13 +70,8 @@ module.exports.judge = async function (judge_state, problem, priority) {
         extraFileLocation: extraFile
     };
 
-    await rp(url.resolve(syzoj.config.judge_server_addr, "/daemon/task"), {
-        method: 'PUT',
-        body: req,
-        headers: {
-            Token: syzoj.config.judge_token
-        },
-        json: true,
-        simple: true
-    });
-}
\ No newline at end of file
+    // TODO: parse extraFileLocation
+    publicChannel.sendToQueue('judge', msgPack.encode({ content: req.content, extraData: null }), { priority: priority });
+}
+
+connect();
diff --git a/package-lock.json b/package-lock.json
index 71f98a6..41b2295 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,6 +19,11 @@
       "resolved": "https://registry.npmjs.org/abab/-/abab-1.0.3.tgz",
       "integrity": "sha1-uB3l9ydOxOdW15fNg08wNkJyTl0="
     },
+    "abbrev": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
+      "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q=="
+    },
     "accepts": {
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.3.tgz",
@@ -61,6 +66,41 @@
       "integrity": "sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU=",
       "optional": true
     },
+    "amqplib": {
+      "version": "0.5.2",
+      "resolved": "https://registry.npmjs.org/amqplib/-/amqplib-0.5.2.tgz",
+      "integrity": "sha512-l9mCs6LbydtHqRniRwYkKdqxVa6XMz3Vw1fh+2gJaaVgTM6Jk3o8RccAKWKtlhT1US5sWrFh+KKxsVUALURSIA==",
+      "requires": {
+        "bitsyntax": "0.0.4",
+        "bluebird": "3.5.0",
+        "buffer-more-ints": "0.0.2",
+        "readable-stream": "1.1.14",
+        "safe-buffer": "5.1.1"
+      },
+      "dependencies": {
+        "isarray": {
+          "version": "0.0.1",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
+          "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8="
+        },
+        "readable-stream": {
+          "version": "1.1.14",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+          "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
+          "requires": {
+            "core-util-is": "1.0.2",
+            "inherits": "2.0.3",
+            "isarray": "0.0.1",
+            "string_decoder": "0.10.31"
+          }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
+        }
+      }
+    },
     "ansi-regex": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
@@ -79,6 +119,20 @@
       "resolved": "https://registry.npmjs.org/append-field/-/append-field-0.1.0.tgz",
       "integrity": "sha1-bdxY+gg8e8VF08WZWygwzCNm1Eo="
     },
+    "aproba": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
+      "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw=="
+    },
+    "are-we-there-yet": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.4.tgz",
+      "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
+      "requires": {
+        "delegates": "1.0.0",
+        "readable-stream": "2.3.3"
+      }
+    },
     "argparse": {
       "version": "1.0.9",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.9.tgz",
@@ -120,6 +174,11 @@
       "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-0.2.0.tgz",
       "integrity": "sha1-104bh+ev/A24qttwIfP+SBAasjQ="
     },
+    "async": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/async/-/async-1.0.0.tgz",
+      "integrity": "sha1-+PwEyjoTeErenhZBr5hXjPvWR6k="
+    },
     "async-lock": {
       "version": "0.3.10",
       "resolved": "https://registry.npmjs.org/async-lock/-/async-lock-0.3.10.tgz",
@@ -148,6 +207,11 @@
       "resolved": "https://registry.npmjs.org/bagpipe/-/bagpipe-0.3.5.tgz",
       "integrity": "sha1-40HRZPyyTN8E6n4Ft2XsEMiupqE="
     },
+    "balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+    },
     "base64-js": {
       "version": "0.0.8",
       "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-0.0.8.tgz",
@@ -172,6 +236,14 @@
       "resolved": "https://registry.npmjs.org/bignumber.js/-/bignumber.js-3.1.2.tgz",
       "integrity": "sha1-8725mtUmihX8HwvtL7AY4mk/4jY="
     },
+    "bitsyntax": {
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/bitsyntax/-/bitsyntax-0.0.4.tgz",
+      "integrity": "sha1-6xDMb4K4xJDj6FaY8H6D1G4MuoI=",
+      "requires": {
+        "buffer-more-ints": "0.0.2"
+      }
+    },
     "bl": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.1.tgz",
@@ -180,6 +252,14 @@
         "readable-stream": "2.3.3"
       }
     },
+    "block-stream": {
+      "version": "0.0.9",
+      "resolved": "https://registry.npmjs.org/block-stream/-/block-stream-0.0.9.tgz",
+      "integrity": "sha1-E+v+d4oDIFz+A3UUgeu0szAMEmo=",
+      "requires": {
+        "inherits": "2.0.3"
+      }
+    },
     "bluebird": {
       "version": "3.5.0",
       "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.0.tgz",
@@ -220,6 +300,15 @@
         "hoek": "2.16.3"
       }
     },
+    "brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "requires": {
+        "balanced-match": "1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
     "buffer": {
       "version": "3.6.0",
       "resolved": "https://registry.npmjs.org/buffer/-/buffer-3.6.0.tgz",
@@ -240,6 +329,11 @@
       "resolved": "https://registry.npmjs.org/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz",
       "integrity": "sha1-+OcRMvf/5uAaXJaXpMbz5I1cyBk="
     },
+    "buffer-more-ints": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/buffer-more-ints/-/buffer-more-ints-0.0.2.tgz",
+      "integrity": "sha1-JrOIXRD6E9t/wBquOquHAZngEkw="
+    },
     "buildmail": {
       "version": "3.10.0",
       "resolved": "https://registry.npmjs.org/buildmail/-/buildmail-3.10.0.tgz",
@@ -369,6 +463,11 @@
       "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
       "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
     },
+    "colors": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/colors/-/colors-1.0.3.tgz",
+      "integrity": "sha1-BDP0TYCWgP3rYO0mDxsMJi6CpAs="
+    },
     "combined-stream": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.5.tgz",
@@ -395,6 +494,11 @@
         "graceful-readlink": "1.0.1"
       }
     },
+    "concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
+    },
     "concat-stream": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.6.0.tgz",
@@ -405,6 +509,11 @@
         "typedarray": "0.0.6"
       }
     },
+    "console-control-strings": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
+      "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4="
+    },
     "content-disposition": {
       "version": "0.5.2",
       "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
@@ -556,6 +665,11 @@
         }
       }
     },
+    "cycle": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/cycle/-/cycle-1.0.3.tgz",
+      "integrity": "sha1-IegLK+hYD5i0aPN5QwZisEbDStI="
+    },
     "dashdash": {
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
@@ -676,6 +790,11 @@
       "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
       "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
     },
+    "delegates": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
+      "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o="
+    },
     "depd": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.0.tgz",
@@ -686,6 +805,11 @@
       "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
       "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
     },
+    "detect-libc": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-1.0.3.tgz",
+      "integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups="
+    },
     "dicer": {
       "version": "0.2.5",
       "resolved": "https://registry.npmjs.org/dicer/-/dicer-0.2.5.tgz",
@@ -889,6 +1013,11 @@
       "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.0.tgz",
       "integrity": "sha1-b2Ma7zNtbEY2K1F2QETOIWvjwFE="
     },
+    "event-lite": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/event-lite/-/event-lite-0.1.1.tgz",
+      "integrity": "sha1-R88IqNN9C2lM23s7F7UfqsZXYIY="
+    },
     "express": {
       "version": "4.15.3",
       "resolved": "https://registry.npmjs.org/express/-/express-4.15.3.tgz",
@@ -950,6 +1079,11 @@
       "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.0.2.tgz",
       "integrity": "sha1-4QgOBljjALBilJkMxw4VAiNf1VA="
     },
+    "eyes": {
+      "version": "0.1.8",
+      "resolved": "https://registry.npmjs.org/eyes/-/eyes-0.1.8.tgz",
+      "integrity": "sha1-Ys8SAjTGg3hdkCNIqADvPgzCC8A="
+    },
     "fast-levenshtein": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz",
@@ -1075,6 +1209,47 @@
         }
       }
     },
+    "fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8="
+    },
+    "fstream": {
+      "version": "1.0.11",
+      "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.11.tgz",
+      "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
+      "requires": {
+        "graceful-fs": "4.1.11",
+        "inherits": "2.0.3",
+        "mkdirp": "0.5.1",
+        "rimraf": "2.6.2"
+      }
+    },
+    "fstream-ignore": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/fstream-ignore/-/fstream-ignore-1.0.5.tgz",
+      "integrity": "sha1-nDHa40dnAY/h0kmyTa2mfQktoQU=",
+      "requires": {
+        "fstream": "1.0.11",
+        "inherits": "2.0.3",
+        "minimatch": "3.0.4"
+      }
+    },
+    "gauge": {
+      "version": "2.7.4",
+      "resolved": "https://registry.npmjs.org/gauge/-/gauge-2.7.4.tgz",
+      "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
+      "requires": {
+        "aproba": "1.2.0",
+        "console-control-strings": "1.1.0",
+        "has-unicode": "2.0.1",
+        "object-assign": "4.1.1",
+        "signal-exit": "3.0.2",
+        "string-width": "1.0.2",
+        "strip-ansi": "3.0.1",
+        "wide-align": "1.1.2"
+      }
+    },
     "generic-pool": {
       "version": "2.4.2",
       "resolved": "https://registry.npmjs.org/generic-pool/-/generic-pool-2.4.2.tgz",
@@ -1113,6 +1288,19 @@
         }
       }
     },
+    "glob": {
+      "version": "7.1.2",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
+      "integrity": "sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==",
+      "requires": {
+        "fs.realpath": "1.0.0",
+        "inflight": "1.0.6",
+        "inherits": "2.0.3",
+        "minimatch": "3.0.4",
+        "once": "1.4.0",
+        "path-is-absolute": "1.0.1"
+      }
+    },
     "got": {
       "version": "6.7.1",
       "resolved": "https://registry.npmjs.org/got/-/got-6.7.1.tgz",
@@ -1166,6 +1354,11 @@
         "har-schema": "1.0.5"
       }
     },
+    "has-unicode": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
+      "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk="
+    },
     "hawk": {
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/hawk/-/hawk-3.1.3.tgz",
@@ -1254,6 +1447,15 @@
       "resolved": "https://registry.npmjs.org/inflection/-/inflection-1.12.0.tgz",
       "integrity": "sha1-ogCTVlbW9fa8TcdQLhrstwMihBY="
     },
+    "inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+      "requires": {
+        "once": "1.4.0",
+        "wrappy": "1.0.2"
+      }
+    },
     "inherits": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
@@ -1264,6 +1466,11 @@
       "resolved": "https://registry.npmjs.org/ini/-/ini-1.3.4.tgz",
       "integrity": "sha1-BTfLedr1m1mhpRff9wbIbsA5Fi4="
     },
+    "int64-buffer": {
+      "version": "0.1.10",
+      "resolved": "https://registry.npmjs.org/int64-buffer/-/int64-buffer-0.1.10.tgz",
+      "integrity": "sha1-J3siiofZWtd30HwTgyAiQGpHNCM="
+    },
     "invert-kv": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/invert-kv/-/invert-kv-1.0.0.tgz",
@@ -1367,7 +1574,14 @@
       "integrity": "sha512-CbcG379L1e+mWBnLvHWWeLs8GyV/EMw862uLI3c+GxVyDHWZcjZinwuBd3iW2pgxgIlksW/1vNJa4to+RvDOww==",
       "requires": {
         "argparse": "1.0.9",
-        "esprima": "2.7.3"
+        "esprima": "4.0.0"
+      },
+      "dependencies": {
+        "esprima": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.0.tgz",
+          "integrity": "sha512-oftTcaMu/EGrEIu904mWteKIv8vMuOgGYo7EhVJJN00R/EED9DCua/xxHRdYnKtcECzVg7xOWhflvJMnqcFZjw=="
+        }
       }
     },
     "jsbn": {
@@ -1734,6 +1948,14 @@
         "mime-db": "1.27.0"
       }
     },
+    "minimatch": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "requires": {
+        "brace-expansion": "1.1.11"
+      }
+    },
     "minimist": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
@@ -1789,6 +2011,17 @@
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
       "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
     },
+    "msgpack-lite": {
+      "version": "0.1.26",
+      "resolved": "https://registry.npmjs.org/msgpack-lite/-/msgpack-lite-0.1.26.tgz",
+      "integrity": "sha1-3TxQsm8FnyXn7e42REGDWOKprYk=",
+      "requires": {
+        "event-lite": "0.1.1",
+        "ieee754": "1.1.8",
+        "int64-buffer": "0.1.10",
+        "isarray": "1.0.0"
+      }
+    },
     "multer": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/multer/-/multer-1.3.0.tgz",
@@ -1863,6 +2096,24 @@
         "win-spawn": "2.0.0"
       }
     },
+    "node-pre-gyp": {
+      "version": "0.6.39",
+      "resolved": "https://registry.npmjs.org/node-pre-gyp/-/node-pre-gyp-0.6.39.tgz",
+      "integrity": "sha512-OsJV74qxnvz/AMGgcfZoDaeDXKD3oY3QVIbBmwszTFkRisTSXbMQyn4UWzUMOtA5SVhrBZOTp0wcoSBgfMfMmQ==",
+      "requires": {
+        "detect-libc": "1.0.3",
+        "hawk": "3.1.3",
+        "mkdirp": "0.5.1",
+        "nopt": "4.0.1",
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-            }
-          }
-        }
+        "node-pre-gyp": "0.6.39"
       }
     },
     "sqlstring": {
@@ -3577,6 +2943,11 @@
         }
       }
     },
+    "stack-trace": {
+      "version": "0.0.10",
+      "resolved": "https://registry.npmjs.org/stack-trace/-/stack-trace-0.0.10.tgz",
+      "integrity": "sha1-VHxws0fo0ytOEI6hoqFZ5f3eGcA="
+    },
     "statuses": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.3.1.tgz",
@@ -3592,14 +2963,6 @@
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       "integrity": "sha1-gIudDlb8Jz2Am6VzOOkpkZoanxo="
     },
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-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
-      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
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       "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
@@ -3610,6 +2973,14 @@
         "strip-ansi": "3.0.1"
       }
     },
+    "string_decoder": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
+      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
+      "requires": {
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+      }
+    },
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       "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.5.tgz",
@@ -3666,6 +3037,31 @@
         "random-js": "1.0.8"
       }
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+    "tar": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-2.2.1.tgz",
+      "integrity": "sha1-jk0qJWwOIYXGsYrWlK7JaLg8sdE=",
+      "requires": {
+        "block-stream": "0.0.9",
+        "fstream": "1.0.11",
+        "inherits": "2.0.3"
+      }
+    },
+    "tar-pack": {
+      "version": "3.4.1",
+      "resolved": "https://registry.npmjs.org/tar-pack/-/tar-pack-3.4.1.tgz",
+      "integrity": "sha512-PPRybI9+jM5tjtCbN2cxmmRU7YmqT3Zv/UDy48tAh2XRkLa9bAORtSWLkVc13+GJF+cdTh1yEnHEk3cpTaL5Kg==",
+      "requires": {
+        "debug": "2.6.7",
+        "fstream": "1.0.11",
+        "fstream-ignore": "1.0.5",
+        "once": "1.4.0",
+        "readable-stream": "2.3.3",
+        "rimraf": "2.6.2",
+        "tar": "2.2.1",
+        "uid-number": "0.0.6"
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     "tar-stream": {
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       "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-1.5.4.tgz",
@@ -3848,6 +3244,11 @@
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       "integrity": "sha1-XAgOXWYcu+OCWdLnCjxyU+hziB0="
     },
+    "uid-number": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/uid-number/-/uid-number-0.0.6.tgz",
+      "integrity": "sha1-DqEOgDXo61uOREnwbaHHMGY7qoE="
+    },
     "uid-safe": {
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       "resolved": "https://registry.npmjs.org/uid-safe/-/uid-safe-2.1.4.tgz",
@@ -4001,6 +3402,14 @@
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       "integrity": "sha1-u6Y8qGGUiZT/MHc2CJ47lgJsKk8="
     },
+    "wide-align": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.2.tgz",
+      "integrity": "sha512-ijDLlyQ7s6x1JgCLur53osjm/UXUYD9+0PbYKrBsYisYXzCxN+HC3mYDNy/dWdmf3AwqwU3CXwDCvsNgGK1S0w==",
+      "requires": {
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+      }
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     "win-spawn": {
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       "resolved": "https://registry.npmjs.org/win-spawn/-/win-spawn-2.0.0.tgz",
@@ -4011,6 +3420,19 @@
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       "integrity": "sha1-+OGqHuWlPsW/FR/6CXQqatdpeHY="
     },
+    "winston": {
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/winston/-/winston-2.4.0.tgz",
+      "integrity": "sha1-gIBQuT1SZh7Z+2wms/DIJnCLCu4=",
+      "requires": {
+        "async": "1.0.0",
+        "colors": "1.0.3",
+        "cycle": "1.0.3",
+        "eyes": "0.1.8",
+        "isstream": "0.1.2",
+        "stack-trace": "0.0.10"
+      }
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     "wkx": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/wkx/-/wkx-0.2.0.tgz",
diff --git a/package.json b/package.json
index e843190..78a2b8a 100644
--- a/package.json
+++ b/package.json
@@ -23,6 +23,7 @@
   },
   "homepage": "https://github.com/syzoj/syzoj#readme",
   "dependencies": {
+    "amqplib": "^0.5.2",
     "ansi-to-html": "^0.4.2",
     "async-lock": "^0.3.9",
     "body-parser": "^1.15.2",
@@ -42,6 +43,7 @@
     "jsonwebtoken": "^7.4.3",
     "moemark-renderer": "^1.2.6",
     "moment": "^2.15.0",
+    "msgpack-lite": "^0.1.26",
     "multer": "^1.2.0",
     "mysql": "^2.11.1",
     "node-7z": "^0.4.0",
@@ -57,6 +59,7 @@
     "syzoj-divine": "^1.0.2",
     "tmp-promise": "^1.0.3",
     "waliyun": "^3.1.1",
+    "winston": "^2.3.1",
     "xss": "^0.3.3"
   }
 }