Add winston, express-winston to handle logging

6 files changed, 390 insertions, 57 deletions

diff --git a/.env.sample b/.env.sample
index b3fdc29..05eed7a 100644
--- a/.env.sample
+++ b/.env.sample
@@ -1,6 +1,8 @@
 PORT=3000
+BIND_ADDRESS=localhost
 TOKEN=
 HOST_DIR=/dist
 UPLOAD_LIMIT=4194304
 MONGO_URI=mongodb://localhost:27017
-MONGO_DB=ao-coverage
\ No newline at end of file
+MONGO_DB=ao-coverage
+LOG_LEVEL=info
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 84cbad6..75dbf3f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -154,6 +154,14 @@
         "uri-js": "4.2.2"
       }
     },
+    "ansi-styles": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+      "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+      "requires": {
+        "color-convert": "1.9.3"
+      }
+    },
     "array-equal": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/array-equal/-/array-equal-1.0.0.tgz",
@@ -177,6 +185,14 @@
       "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
     },
+    "async": {
+      "version": "2.6.3",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+      "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+      "requires": {
+        "lodash": "4.17.15"
+      }
+    },
     "async-limiter": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.1.tgz",
@@ -247,6 +263,66 @@
       "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
       "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw="
     },
+    "chalk": {
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+      "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+      "requires": {
+        "ansi-styles": "3.2.1",
+        "escape-string-regexp": "1.0.5",
+        "supports-color": "5.5.0"
+      }
+    },
+    "color": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/color/-/color-3.0.0.tgz",
+      "integrity": "sha512-jCpd5+s0s0t7p3pHQKpnJ0TpQKKdleP71LWcA0aqiljpiuAkOSUFN/dyH8ZwF0hRmFlrIuRhufds1QyEP9EB+w==",
+      "requires": {
+        "color-convert": "1.9.3",
+        "color-string": "1.5.3"
+      }
+    },
+    "color-convert": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
+      "requires": {
+        "color-name": "1.1.3"
+      }
+    },
+    "color-name": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
+    },
+    "color-string": {
+      "version": "1.5.3",
+      "resolved": "https://registry.npmjs.org/color-string/-/color-string-1.5.3.tgz",
+      "integrity": "sha512-dC2C5qeWoYkxki5UAXapdjqO672AM4vZuPGRQfO8b5HKuKGBbKWpITyDYN7TOFKvRW7kOgAn3746clDBMDJyQw==",
+      "requires": {
+        "color-name": "1.1.3",
+        "simple-swizzle": "0.2.2"
+      }
+    },
+    "colornames": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/colornames/-/colornames-1.1.1.tgz",
+      "integrity": "sha1-+IiQMGhcfE/54qVZ9Qd+t2qBb5Y="
+    },
+    "colors": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/colors/-/colors-1.4.0.tgz",
+      "integrity": "sha512-a+UqTh4kgZg/SlGvfbzDHpgRu7AAQOmmqRHJnxhRZICKFUT91brVhNNt58CMWU9PsBbv3PDCZUHbVxuDiH2mtA=="
+    },
+    "colorspace": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/colorspace/-/colorspace-1.1.2.tgz",
+      "integrity": "sha512-vt+OoIP2d76xLhjwbBaucYlNSpPsrJWPlBTtwCpQKIu6/CSMutyzX93O/Do0qzpH3YoHEes8YEFXyZ797rEhzQ==",
+      "requires": {
+        "color": "3.0.0",
+        "text-hex": "1.0.0"
+      }
+    },
     "combined-stream": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
@@ -349,6 +425,16 @@
       "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
       "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
     },
+    "diagnostics": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/diagnostics/-/diagnostics-1.1.1.tgz",
+      "integrity": "sha512-8wn1PmdunLJ9Tqbx+Fx/ZEuHfJf4NKSN2ZBj7SJC/OWRWha843+WsTjqMe1B5E3p28jqBlp+mJ2fPVxPyNgYKQ==",
+      "requires": {
+        "colorspace": "1.1.2",
+        "enabled": "1.0.2",
+        "kuler": "1.0.1"
+      }
+    },
     "domexception": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/domexception/-/domexception-1.0.1.tgz",
@@ -376,16 +462,34 @@
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
       "integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
     },
+    "enabled": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/enabled/-/enabled-1.0.2.tgz",
+      "integrity": "sha1-ll9lE9LC0cX0ZStkouM5ZGf8L5M=",
+      "requires": {
+        "env-variable": "0.0.5"
+      }
+    },
     "encodeurl": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
       "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
     },
+    "env-variable": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/env-variable/-/env-variable-0.0.5.tgz",
+      "integrity": "sha512-zoB603vQReOFvTg5xMl9I1P2PnHsHQQKTEowsKKD7nseUfJq6UWzK+4YtlWUO1nhiQUxe6XMkk+JleSZD1NZFA=="
+    },
     "escape-html": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
       "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
     },
+    "escape-string-regexp": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
+    },
     "escodegen": {
       "version": "1.12.0",
       "resolved": "https://registry.npmjs.org/escodegen/-/escodegen-1.12.0.tgz",
@@ -455,6 +559,15 @@
         "vary": "1.1.2"
       }
     },
+    "express-winston": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/express-winston/-/express-winston-4.0.1.tgz",
+      "integrity": "sha512-HQZ/d2UPuZIr/PNiLOHX+CF2Q9srfBy1GDK7yIJ+MvX6MU49ggM25XynSNmC5RRPlD2ju3Zic+mCTQtixP1gzQ==",
+      "requires": {
+        "chalk": "2.4.2",
+        "lodash": "4.17.15"
+      }
+    },
     "extend": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
@@ -480,6 +593,16 @@
       "resolved": "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz",
       "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc="
     },
+    "fast-safe-stringify": {
+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/fast-safe-stringify/-/fast-safe-stringify-2.0.7.tgz",
+      "integrity": "sha512-Utm6CdzT+6xsDk2m8S6uL8VHxNwI6Jub+e9NYTcAms28T84pTa25GJQV9j0CY0N1rM8hK4x6grpF2BQf+2qwVA=="
+    },
+    "fecha": {
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/fecha/-/fecha-2.3.3.tgz",
+      "integrity": "sha512-lUGBnIamTAwk4znq5BcqsDaxSmZ9nDVJaij6NvRt/Tg4R69gERA+otPKbS86ROw9nxVMw2/mp1fnaiWqbs6Sdg=="
+    },
     "finalhandler": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.2.tgz",
@@ -541,6 +664,11 @@
         "har-schema": "2.0.0"
       }
     },
+    "has-flag": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
+    },
     "html-encoding-sniffer": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/html-encoding-sniffer/-/html-encoding-sniffer-1.0.2.tgz",
@@ -594,11 +722,26 @@
       "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.9.0.tgz",
       "integrity": "sha512-M4Sjn6N/+O6/IXSJseKqHoFc+5FdGJ22sXqnjTpdZweHK64MzEPAyQZyEU3R/KRv2GLoa7nNtg/C2Ev6m7z+eA=="
     },
+    "is-arrayish": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/is-arrayish/-/is-arrayish-0.3.2.tgz",
+      "integrity": "sha512-eVRqCvVlZbuw3GrM63ovNSNAeA1K16kaR/LRY/92w0zxQ5/1YzwblUX652i4Xs9RwAGjW9d9y6X88t8OaAJfWQ=="
+    },
+    "is-stream": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-1.1.0.tgz",
+      "integrity": "sha1-EtSj3U5o4Lec6428hBc66A2RykQ="
+    },
     "is-typedarray": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/is-typedarray/-/is-typedarray-1.0.0.tgz",
       "integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo="
     },
+    "isarray": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
+      "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
+    },
     "isstream": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/isstream/-/isstream-0.1.2.tgz",
@@ -668,6 +811,14 @@
         "verror": "1.10.0"
       }
     },
+    "kuler": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/kuler/-/kuler-1.0.1.tgz",
+      "integrity": "sha512-J9nVUucG1p/skKul6DU3PUZrhs0LPulNaeUOox0IyXDi8S4CztTHs1gQphhuZmzXG7VOQSf6NJfKuzteQLv9gQ==",
+      "requires": {
+        "colornames": "1.1.1"
+      }
+    },
     "levn": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/levn/-/levn-0.3.0.tgz",
@@ -687,6 +838,25 @@
       "resolved": "https://registry.npmjs.org/lodash.sortby/-/lodash.sortby-4.7.0.tgz",
       "integrity": "sha1-7dFMgk4sycHgsKG0K7UhBRakJDg="
     },
+    "logform": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/logform/-/logform-2.1.2.tgz",
+      "integrity": "sha512-+lZh4OpERDBLqjiwDLpAWNQu6KMjnlXH2ByZwCuSqVPJletw0kTWJf5CgSNAUKn1KUkv3m2cUz/LK8zyEy7wzQ==",
+      "requires": {
+        "colors": "1.4.0",
+        "fast-safe-stringify": "2.0.7",
+        "fecha": "2.3.3",
+        "ms": "2.1.2",
+        "triple-beam": "1.3.0"
+      },
+      "dependencies": {
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+        }
+      }
+    },
     "media-typer": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
@@ -765,6 +935,11 @@
         "ee-first": "1.1.1"
       }
     },
+    "one-time": {
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/one-time/-/one-time-0.0.4.tgz",
+      "integrity": "sha1-+M33eISCb+Tf+T46nMN7HkSAdC4="
+    },
     "optionator": {
       "version": "0.8.3",
       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.8.3.tgz",
@@ -814,6 +989,11 @@
       "integrity": "sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==",
       "dev": true
     },
+    "process-nextick-args": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag=="
+    },
     "proxy-addr": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.5.tgz",
@@ -854,6 +1034,16 @@
         "unpipe": "1.0.0"
       }
     },
+    "readable-stream": {
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.4.0.tgz",
+      "integrity": "sha512-jItXPLmrSR8jmTRmRWJXCnGJsfy85mB3Wd/uINMXA65yrnFo0cPClFIUWzo2najVNSl+mx7/4W8ttlLWJe99pQ==",
+      "requires": {
+        "inherits": "2.0.3",
+        "string_decoder": "1.3.0",
+        "util-deprecate": "1.0.2"
+      }
+    },
     "request": {
       "version": "2.88.0",
       "resolved": "https://registry.npmjs.org/request/-/request-2.88.0.tgz",
@@ -1020,6 +1210,14 @@
       "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.1.tgz",
       "integrity": "sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw=="
     },
+    "simple-swizzle": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/simple-swizzle/-/simple-swizzle-0.2.2.tgz",
+      "integrity": "sha1-pNprY1/8zMoz9w0Xy5JZLeleVXo=",
+      "requires": {
+        "is-arrayish": "0.3.2"
+      }
+    },
     "source-map": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -1051,6 +1249,11 @@
         "tweetnacl": "0.14.5"
       }
     },
+    "stack-trace": {
+      "version": "0.0.10",
+      "resolved": "https://registry.npmjs.org/stack-trace/-/stack-trace-0.0.10.tgz",
+      "integrity": "sha1-VHxws0fo0ytOEI6hoqFZ5f3eGcA="
+    },
     "statuses": {
       "version": "1.5.0",
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
@@ -1061,11 +1264,39 @@
       "resolved": "https://registry.npmjs.org/stealthy-require/-/stealthy-require-1.1.1.tgz",
       "integrity": "sha1-NbCYdbT/SfJqd35QmzCQoyJr8ks="
     },
+    "string_decoder": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.3.0.tgz",
+      "integrity": "sha512-hkRX8U1WjJFd8LsDJ2yQ/wWWxaopEsABU1XfkM8A+j0+85JAGppt16cr1Whg6KIbb4okU6Mql6BOj+uup/wKeA==",
+      "requires": {
+        "safe-buffer": "5.2.0"
+      },
+      "dependencies": {
+        "safe-buffer": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.0.tgz",
+          "integrity": "sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg=="
+        }
+      }
+    },
+    "supports-color": {
+      "version": "5.5.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+      "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+      "requires": {
+        "has-flag": "3.0.0"
+      }
+    },
     "symbol-tree": {
       "version": "3.2.4",
       "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.4.tgz",
       "integrity": "sha512-9QNk5KwDF+Bvz+PyObkmSYjI5ksVUYtjW7AU22r2NKcfLJcXp96hkDWU3+XndOsUb+AQ9QhfzfCT2O+CNWT5Tw=="
     },
+    "text-hex": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/text-hex/-/text-hex-1.0.0.tgz",
+      "integrity": "sha512-uuVGNWzgJ4yhRaNSiubPY7OjISw4sw4E5Uv0wbjp+OzcbmVU/rsT8ujgcXJhn9ypzsgr5vlzpPqP+MBBKcGvbg=="
+    },
     "toidentifier": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.0.tgz",
@@ -1089,6 +1320,11 @@
         "punycode": "2.1.1"
       }
     },
+    "triple-beam": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/triple-beam/-/triple-beam-1.3.0.tgz",
+      "integrity": "sha512-XrHUvV5HpdLmIj4uVMxHggLbFSZYIn7HEWsqePZcI50pco+MPqJ50wMGY794X7AOOhxOBAjbkqfAbEe/QMp2Lw=="
+    },
     "tunnel-agent": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
@@ -1137,6 +1373,11 @@
         "punycode": "2.1.1"
       }
     },
+    "util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
+    },
     "utils-merge": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
@@ -1208,6 +1449,55 @@
         "webidl-conversions": "4.0.2"
       }
     },
+    "winston": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/winston/-/winston-3.2.1.tgz",
+      "integrity": "sha512-zU6vgnS9dAWCEKg/QYigd6cgMVVNwyTzKs81XZtTFuRwJOcDdBg7AU0mXVyNbs7O5RH2zdv+BdNZUlx7mXPuOw==",
+      "requires": {
+        "async": "2.6.3",
+        "diagnostics": "1.1.1",
+        "is-stream": "1.1.0",
+        "logform": "2.1.2",
+        "one-time": "0.0.4",
+        "readable-stream": "3.4.0",
+        "stack-trace": "0.0.10",
+        "triple-beam": "1.3.0",
+        "winston-transport": "4.3.0"
+      }
+    },
+    "winston-transport": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/winston-transport/-/winston-transport-4.3.0.tgz",
+      "integrity": "sha512-B2wPuwUi3vhzn/51Uukcao4dIduEiPOcOt9HJ3QeaXgkJ5Z7UwpBzxS4ZGNHtrxrUvTwemsQiSys0ihOf8Mp1A==",
+      "requires": {
+        "readable-stream": "2.3.6",
+        "triple-beam": "1.3.0"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "2.3.6",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "requires": {
+            "core-util-is": "1.0.2",
+            "inherits": "2.0.3",
+            "isarray": "1.0.0",
+            "process-nextick-args": "2.0.1",
+            "safe-buffer": "5.1.2",
+            "string_decoder": "1.1.1",
+            "util-deprecate": "1.0.2"
+          }
+        },
+        "string_decoder": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+          "requires": {
+            "safe-buffer": "5.1.2"
+          }
+        }
+      }
+    },
     "word-wrap": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
diff --git a/package.json b/package.json
index 818b361..44e13a2 100644
--- a/package.json
+++ b/package.json
@@ -20,9 +20,11 @@
     "badgen": "3.0.1",
     "dotenv": "8.2.0",
     "express": "4.17.1",
+    "express-winston": "^4.0.1",
     "jsdom": "^15.2.1",
     "mongodb": "^3.3.5",
-    "typescript": "^3.7.2"
+    "typescript": "^3.7.2",
+    "winston": "^3.2.1"
   },
   "devDependencies": {
     "prettier": "^1.19.1"
diff --git a/src/index.ts b/src/index.ts
index 4955ba6..53592da 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -6,50 +6,56 @@ import { MongoClient } from "mongodb";
 import path from "path";
 import fs from "fs";
 
+import winston from "winston";
+import expressWinston from "express-winston";
+
+dotenv.config();
+
 import formats, { Format } from "./formats";
 import Metadata from "./metadata";
+import logger_config from "./util/logger";
+import { config_or_error, handle_shutdown } from "./util/config";
 
 // Start-up configuration
-dotenv.config();
+const BIND_ADDRESS = process.env.BIND_ADDRESS || "localhost";
 const PORT = Number(process.env.PORT || 3000);
 const TOKEN = process.env.TOKEN || "";
 const UPLOAD_LIMIT = Number(process.env.UPLOAD_LIMIT || 4194304);
-const MONGO_URI =
-  process.env.MONGO_URI ||
-  (() => {
-    throw Error("MONGO_URI must be defined");
-  })();
+
+const logger = winston.createLogger(logger_config("ROOT"));
+
+const MONGO_URI = config_or_error("MONGO_URI");
 const MONGO_DB = process.env.MONGO_DB || "ao-coverage";
-const HOST_DIR =
-  process.env.HOST_DIR ||
-  (() => {
-    throw Error("HOST_DIR must be defined");
-  })();
+const HOST_DIR = config_or_error("HOST_DIR");
 
 fs.accessSync(HOST_DIR, fs.constants.R_OK | fs.constants.W_OK);
 if (!path.isAbsolute(HOST_DIR)) {
-  throw Error("HOST_DIR must be an absolute path");
+  logger.error("HOST_DIR must be an absolute path");
+  process.exit(1);
 }
 
 new MongoClient(MONGO_URI, { useUnifiedTopology: true }).connect(
   (err, mongo) => {
     if (err !== null) {
-      throw err;
+      logger.error(err);
+      process.exit(1);
     }
 
     const app: express.Application = express();
     const metadata = new Metadata(mongo.db(MONGO_DB));
 
+    app.use(
+      expressWinston.logger({
+        ...logger_config("HTTP"),
+        // filter out token query param from URL
+        msg:
+          '{{req.method}} {{req.url.replace(/token=[-\\w.~]*(&*)/, "token=$1")}} - {{res.statusCode}} {{res.responseTime}}ms'
+      })
+    );
+
     // Upload HTML file
     app.post("/v1/:org/:repo/:branch/:commit.html", (req, res) => {
       const { org, repo, branch, commit } = req.params;
-      console.info(
-        "POST request to /v1/%s/%s/%s/%s.html",
-        org,
-        repo,
-        branch,
-        commit
-      );
 
       const { token, format } = req.query;
       //TODO @Metadata token should come from metadata
@@ -112,11 +118,10 @@ new MongoClient(MONGO_URI, { useUnifiedTopology: true }).connect(
 
     app.get("/v1/:org/:repo/:branch.svg", (req, res) => {
       const { org, repo, branch } = req.params;
-      console.info("GET request to /v1/%s/%s/%s.svg", org, repo, branch);
 
       metadata.getHeadCommit(org, repo, branch).then(
         commit => {
-          console.debug(
+          logger.debug(
             "Found commit %s for ORB %s/%s/%s",
             commit,
             org,
@@ -136,11 +141,10 @@ new MongoClient(MONGO_URI, { useUnifiedTopology: true }).connect(
 
     app.get("/v1/:org/:repo/:branch.html", (req, res) => {
       const { org, repo, branch } = req.params;
-      console.info("GET request to /v1/%s/%s/%s.html", org, repo, branch);
 
       metadata.getHeadCommit(org, repo, branch).then(
         commit => {
-          console.debug(
+          logger.debug(
             "Found commit %s for ORB %s/%s/%s",
             commit,
             org,
@@ -161,13 +165,6 @@ new MongoClient(MONGO_URI, { useUnifiedTopology: true }).connect(
     // provide hard link for commit
     app.get("/v1/:org/:repo/:branch/:commit.svg", (req, res) => {
       const { org, repo, branch, commit } = req.params;
-      console.info(
-        "GET request to /v1/%s/%s/%s/%s.svg",
-        org,
-        repo,
-        branch,
-        commit
-      );
 
       res.sendFile(path.join(HOST_DIR, org, repo, branch, commit, "badge.svg"));
     });
@@ -175,39 +172,22 @@ new MongoClient(MONGO_URI, { useUnifiedTopology: true }).connect(
     // provide hard link for commit
     app.get("/v1/:org/:repo/:branch/:commit.html", (req, res) => {
       const { org, repo, branch, commit } = req.params;
-      console.info(
-        "GET request to /v1/%s/%s/%s/%s.html",
-        org,
-        repo,
-        branch,
-        commit
-      );
 
       res.sendFile(
         path.join(HOST_DIR, org, repo, branch, commit, "index.html")
       );
     });
 
-    const server = app.listen(PORT, () => {
-      console.log("Express started on port " + PORT);
+    app.use(expressWinston.errorLogger(logger_config("_ERR")));
+
+    const server = app.listen(PORT, BIND_ADDRESS, () => {
+      logger.info("Express has started: http://%s:%d/", BIND_ADDRESS, PORT);
     });
 
     // application exit handling
-    const handle_closure = (signal: NodeJS.Signals) => {
-      console.log("%s signal received. Closing shop.", signal);
-
-      mongo.close().then(() => {
-        console.log("Mongo client connection closed.");
-        server.close(() => {
-          console.log("Express down.");
-          process.exit();
-        });
-      });
-    };
-
     const handle_codes: NodeJS.Signals[] = ["SIGTERM", "SIGHUP", "SIGINT"];
-    const process_event = (code: NodeJS.Signals) =>
-      process.on(code, handle_closure);
-    handle_codes.map(process_event);
+    handle_codes.map((code: NodeJS.Signals) => {
+      process.on(code, handle_shutdown(mongo, server));
+    });
   }
 );
diff --git a/src/util/config.ts b/src/util/config.ts
new file mode 100644
index 0000000..c155e64
--- /dev/null
+++ b/src/util/config.ts
@@ -0,0 +1,38 @@
+import winston from "winston";
+import { MongoClient } from "mongodb";
+import { Server } from "http";
+
+import logger_config from "./logger";
+
+const logger = winston.createLogger(logger_config("ROOT"));
+
+export const config_or_error = (var_name: string) => {
+  if (!process.env[var_name]) {
+    logger.error("%s must be defined", var_name);
+    process.exit(1);
+    return "";
+  } else {
+    return process.env[var_name] || "";
+  }
+};
+
+export const handle_shutdown = (mongo: MongoClient, server: Server) => (
+  signal: NodeJS.Signals
+) => {
+  logger.warn("%s signal received. Closing shop.", signal);
+
+  mongo
+    .close()
+    .then(() => {
+      logger.info("MongoDB client connection closed.");
+      return new Promise((res, rej) =>
+        server.close(err => {
+          logger.info("Express down.");
+          (err ? rej : res)(err);
+        })
+      );
+    })
+    .finally(() => {
+      process.exit(0);
+    });
+};
diff --git a/src/util/logger.ts b/src/util/logger.ts
new file mode 100644
index 0000000..bafb829
--- /dev/null
+++ b/src/util/logger.ts
@@ -0,0 +1,21 @@
+import winston from "winston";
+const { combine, splat, timestamp, label, colorize, printf } = winston.format;
+const { Console } = winston.transports;
+
+const LOG_LEVEL = process.env.LOG_LEVEL || "info";
+
+/**
+ * Provides standard logging format and output for the server.
+ */
+export default (clazz: string, level: string = LOG_LEVEL) => ({
+  format: combine(
+    splat(),
+    timestamp(),
+    label({ label: clazz }),
+    colorize(),
+    printf(({ level, message, label, timestamp }) => {
+      return `${timestamp} [${label}] ${level}: ${message}`;
+    })
+  ),
+  transports: [new Console({ level: level })]
+});