feat: add winston-based logger

package-lock.json

@@ -666,6 +666,16 @@
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       "integrity": "sha512-MVESJnkgSoPaCkNNN8RDm0B06d0JNL4QOvRZFuFETY4/D+OwIpcEf0EGButQsDUlelAk5n/sFssLMqo2tw65SA=="
     },
+    "@dabh/diagnostics": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/@dabh/diagnostics/-/diagnostics-2.0.2.tgz",
+      "integrity": "sha512-+A1YivoVDNNVCdfozHSR8v/jyuuLTMXwjWuxPFlFlUapXoGc+Gj9mDlTDDfrwl7rXCl2tNZ0kE8sIBO6YOn96Q==",
+      "requires": {
+        "colorspace": "1.1.x",
+        "enabled": "2.0.x",
+        "kuler": "^2.0.0"
+      }
+    },
     "@eslint/eslintrc": {
       "version": "0.1.3",
       "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-0.1.3.tgz",
@@ -2098,6 +2108,11 @@
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       "dev": true
     },
+    "async": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.0.tgz",
+      "integrity": "sha512-TR2mEZFVOj2pLStYxLht7TyfuRzaydfpxr3k9RpHIzMgw7A64dzsdqCxH1WJyQdoe8T10nDXd9wnEigmiuHIZw=="
+    },
     "async-lock": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/async-lock/-/async-lock-1.2.4.tgz",
@@ -2640,6 +2655,30 @@
         "object-visit": "^1.0.0"
       }
     },
+    "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": "^1.9.1",
+        "color-string": "^1.5.2"
+      },
+      "dependencies": {
+        "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-convert": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
@@ -2653,6 +2692,29 @@
       "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
       "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA=="
     },
+    "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": "^1.0.0",
+        "simple-swizzle": "^0.2.2"
+      }
+    },
+    "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.x",
+        "text-hex": "1.0.x"
+      }
+    },
     "combined-stream": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
@@ -3244,6 +3306,11 @@
       "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
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     },
+    "enabled": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/enabled/-/enabled-2.0.0.tgz",
+      "integrity": "sha512-AKrN98kuwOzMIdAizXGI86UFBoo26CL21UM763y1h/GMSJ4/OHU9k2YlsmBpyScFo/wbLzWQJBMCW4+IO3/+OQ=="
+    },
     "encodeurl": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
@@ -4504,6 +4571,11 @@
       "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=",
       "dev": true
     },
+    "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=="
+    },
     "fastq": {
       "version": "1.8.0",
       "resolved": "https://registry.npmjs.org/fastq/-/fastq-1.8.0.tgz",
@@ -4522,6 +4594,11 @@
         "bser": "2.1.1"
       }
     },
+    "fecha": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/fecha/-/fecha-4.2.0.tgz",
+      "integrity": "sha512-aN3pcx/DSmtyoovUudctc8+6Hl4T+hI9GBBHLjA76jdZl7+b1sgh5g4k+u/GL3dTy1/pnYzKp69FpJ0OicE3Wg=="
+    },
     "figures": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/figures/-/figures-3.2.0.tgz",
@@ -4610,6 +4687,11 @@
       "integrity": "sha512-r5wGx7YeOwNWNlCA0wQ86zKyDLMQr+/RB8xy74M4hTphfmjlijTSSXGuH8rnvKZnfT9i+75zmd8jcKdMR4O6jA==",
       "dev": true
     },
+    "fn.name": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/fn.name/-/fn.name-1.1.0.tgz",
+      "integrity": "sha512-GRnmB5gPyJpAhTQdSZTSp9uaPSvl09KoYcMQtsB9rQoOmzs9dH6ffeccH+Z+cv6P68Hu5bC6JjRh4Ah/mHSNRw=="
+    },
     "follow-redirects": {
       "version": "1.13.0",
       "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.13.0.tgz",
@@ -5729,8 +5811,7 @@
     "isarray": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
-      "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=",
+      "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
-      "dev": true
     },
     "isexe": {
       "version": "2.0.0",
@@ -7504,6 +7585,11 @@
       "integrity": "sha512-eTIzlVOSUR+JxdDFepEYcBMtZ9Qqdef+rnzWdRZuMbOywu5tO2w2N7rqjoANZ5k9vywhL6Br1VRjUIgTQx4E8w==",
       "dev": true
     },
+    "kuler": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/kuler/-/kuler-2.0.0.tgz",
+      "integrity": "sha512-Xq9nH7KlWZmXAtodXDDRE7vs6DU1gTU8zYDHDiWLSip45Egwq3plLHzPn27NgvzL2r1LMPC1vdqh98sQxtqj4A=="
+    },
     "latest-version": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/latest-version/-/latest-version-5.1.0.tgz",
@@ -7638,6 +7724,18 @@
       "integrity": "sha512-U7KCmLdqsGHBLeWqYlFA0V0Sl6P08EE1ZrmA9cxjUE0WVqT9qnyVDPz1kzpFEP0jdJuFnasWIfSd7fsaNXkpbg==",
       "dev": true
     },
+    "logform": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/logform/-/logform-2.2.0.tgz",
+      "integrity": "sha512-N0qPlqfypFx7UHNn4B3lzS/b0uLqt2hmuoa+PpuXNYgozdJYAyauF5Ky0BWVjrxDlMWiT3qN4zPq3vVAfZy7Yg==",
+      "requires": {
+        "colors": "^1.2.1",
+        "fast-safe-stringify": "^2.0.4",
+        "fecha": "^4.2.0",
+        "ms": "^2.1.1",
+        "triple-beam": "^1.3.0"
+      }
+    },
     "loose-envify": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
@@ -7896,8 +7994,7 @@
     "ms": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
-      "dev": true
     },
     "multimap": {
       "version": "1.1.0",
@@ -8271,6 +8368,14 @@
         "wrappy": "1"
       }
     },
+    "one-time": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/one-time/-/one-time-1.0.0.tgz",
+      "integrity": "sha512-5DXOiRKwuSEcQ/l0kGCF6Q3jcADFv5tSmRaJck/OqkVFcOzutB134KRSfF0xDrL39MNnqxbHBbUUcjZIhTgb2g==",
+      "requires": {
+        "fn.name": "1.x.x"
+      }
+    },
     "onetime": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/onetime/-/onetime-5.1.2.tgz",
@@ -8595,8 +8700,7 @@
     "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==",
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag=="
-      "dev": true
     },
     "progress": {
       "version": "2.0.3",
@@ -9557,6 +9661,21 @@
       "integrity": "sha512-VUJ49FC8U1OxwZLxIbTTrDvLnf/6TDgxZcK8wxR8zs13xpx7xbG60ndBlhNrFi2EMuFRoeDoJO7wthSLq42EjA==",
       "dev": true
     },
+    "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": "^0.3.1"
+      },
+      "dependencies": {
+        "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=="
+        }
+      }
+    },
     "sisteransi": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/sisteransi/-/sisteransi-1.0.5.tgz",
@@ -9846,6 +9965,11 @@
         "tweetnacl": "~0.14.0"
       }
     },
+    "stack-trace": {
+      "version": "0.0.10",
+      "resolved": "https://registry.npmjs.org/stack-trace/-/stack-trace-0.0.10.tgz",
+      "integrity": "sha1-VHxws0fo0ytOEI6hoqFZ5f3eGcA="
+    },
     "stack-utils": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/stack-utils/-/stack-utils-2.0.2.tgz",
@@ -10186,6 +10310,11 @@
         "minimatch": "^3.0.4"
       }
     },
+    "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=="
+    },
     "text-table": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
@@ -10357,6 +10486,11 @@
       "integrity": "sha512-C4+gOpvmxaSMKuEf9Qc134F1ZuOHVXKRbtEflf4NTtuuJDEIJ9p5PXsalL8SkeRw+qit1Mo+yuvMPAKwWg/1hA==",
       "dev": true
     },
+    "triple-beam": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/triple-beam/-/triple-beam-1.3.0.tgz",
+      "integrity": "sha512-XrHUvV5HpdLmIj4uVMxHggLbFSZYIn7HEWsqePZcI50pco+MPqJ50wMGY794X7AOOhxOBAjbkqfAbEe/QMp2Lw=="
+    },
     "ts-jest": {
       "version": "26.3.0",
       "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-26.3.0.tgz",
@@ -10782,6 +10916,62 @@
         "string-width": "^4.0.0"
       }
     },
+    "winston": {
+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/winston/-/winston-3.3.3.tgz",
+      "integrity": "sha512-oEXTISQnC8VlSAKf1KYSSd7J6IWuRPQqDdo8eoRNaYKLvwSb5+79Z3Yi1lrl6KDpU6/VWaxpakDAtb1oQ4n9aw==",
+      "requires": {
+        "@dabh/diagnostics": "^2.0.2",
+        "async": "^3.1.0",
+        "is-stream": "^2.0.0",
+        "logform": "^2.2.0",
+        "one-time": "^1.0.0",
+        "readable-stream": "^3.4.0",
+        "stack-trace": "0.0.x",
+        "triple-beam": "^1.3.0",
+        "winston-transport": "^4.4.0"
+      },
+      "dependencies": {
+        "is-stream": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-2.0.0.tgz",
+          "integrity": "sha512-XCoy+WlUr7d1+Z8GgSuXmpuUFC9fOhRXglJMx+dwLKTkL44Cjd4W1Z5P+BQZpr+cR93aGP4S/s7Ftw6Nd/kiEw=="
+        }
+      }
+    },
+    "winston-transport": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/winston-transport/-/winston-transport-4.4.0.tgz",
+      "integrity": "sha512-Lc7/p3GtqtqPBYYtS6KCN3c77/2QCev51DvcJKbkFPQNoj1sinkGwLGFDxkXY9J6p9+EPnYs+D90uwbnaiURTw==",
+      "requires": {
+        "readable-stream": "^2.3.7",
+        "triple-beam": "^1.2.0"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        },
+        "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": "~5.1.0"
+          }
+        }
+      }
+    },
     "word-wrap": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",

package.json

@@ -87,6 +87,8 @@
     "sparqlalgebrajs": "^2.3.1",
     "streamify-array": "^1.0.1",
     "uuid": "^8.3.0",
+    "winston": "^3.3.3",
+    "winston-transport": "^4.4.0",
     "yargs": "^16.0.0"
   },
   "devDependencies": {

src/logging/WinstonLogger.ts

@@ -0,0 +1,19 @@
+import type { Logger as WinstonInnerLogger } from 'winston';
+import type { Logger } from './Logger';
+import type { LogLevel } from './LogLevel';
+
+/**
+ * A WinstonLogger implements the {@link Logger} interface using a given winston logger.
+ */
+export class WinstonLogger implements Logger {
+  private readonly logger: WinstonInnerLogger;
+
+  public constructor(logger: WinstonInnerLogger) {
+    this.logger = logger;
+  }
+
+  public log(level: LogLevel, message: string, meta?: any): this {
+    this.logger.log(level, message, meta);
+    return this;
+  }
+}

src/logging/WinstonLoggerFactory.ts

@@ -0,0 +1,37 @@
+import { createLogger, format, transports } from 'winston';
+import type * as Transport from 'winston-transport';
+import type { Logger } from './Logger';
+import type { LoggerFactory } from './LoggerFactory';
+import { WinstonLogger } from './WinstonLogger';
+
+/**
+ * Uses the winston library to create loggers for the given logging level.
+ * By default, it will print to the console with colorized logging levels.
+ *
+ * This creates instances of {@link WinstonLogger}.
+ */
+export class WinstonLoggerFactory implements LoggerFactory {
+  private readonly level: string;
+
+  public constructor(level: string) {
+    this.level = level;
+  }
+
+  public createLogger(label: string): Logger {
+    return new WinstonLogger(createLogger({
+      level: this.level,
+      format: format.combine(
+        format.label({ label }),
+        format.colorize(),
+        format.timestamp(),
+        format.printf(({ level: levelInner, message, label: labelInner, timestamp }: {[key: string]: any}): string =>
+          `${timestamp} [${labelInner}] ${levelInner}: ${message}`),
+      ),
+      transports: this.createTransports(),
+    }));
+  }
+
+  protected createTransports(): Transport[] {
+    return [ new transports.Console() ];
+  }
+}

test/unit/logging/WinstonLogger.test.ts

@@ -0,0 +1,18 @@
+import { WinstonLogger } from '../../../src/logging/WinstonLogger';
+
+describe('WinstonLogger', (): void => {
+  let innerLogger: any;
+  let logger: WinstonLogger;
+  beforeEach(async(): Promise<void> => {
+    innerLogger = {
+      log: jest.fn(),
+    };
+    logger = new WinstonLogger(innerLogger);
+  });
+
+  it('delegates log invocations to the inner logger.', async(): Promise<void> => {
+    expect(logger.log('debug', 'my message', { abc: true })).toBe(logger);
+    expect(innerLogger.log).toHaveBeenCalledTimes(1);
+    expect(innerLogger.log).toHaveBeenCalledWith('debug', 'my message', { abc: true });
+  });
+});

test/unit/logging/WinstonLoggerFactory.test.ts

@@ -0,0 +1,43 @@
+import { PassThrough } from 'stream';
+import type { Logger } from 'winston';
+import { WinstonLogger } from '../../../src/logging/WinstonLogger';
+import { WinstonLoggerFactory } from '../../../src/logging/WinstonLoggerFactory';
+
+describe('WinstonLoggerFactory', (): void => {
+  let factory: WinstonLoggerFactory;
+  beforeEach(async(): Promise<void> => {
+    factory = new WinstonLoggerFactory('debug');
+  });
+
+  it('creates WinstonLoggers.', async(): Promise<void> => {
+    const logger = factory.createLogger('MyLabel');
+    expect(logger).toBeInstanceOf(WinstonLogger);
+    const innerLogger: Logger = (logger as any).logger;
+    expect(innerLogger.level).toEqual('debug');
+    expect(innerLogger.format).toBeTruthy();
+    expect(innerLogger.transports).toHaveLength(1);
+  });
+
+  it('allows WinstonLoggers to be invoked.', async(): Promise<void> => {
+    // Create a dummy log transport
+    const transport: any = new PassThrough({ objectMode: true });
+    transport.write = jest.fn();
+    transport.log = jest.fn();
+    (factory as any).createTransports = (): any => [ transport ];
+
+    // Create logger, and log
+    const logger = factory.createLogger('MyLabel');
+    logger.log('debug', 'my message');
+
+    expect(transport.write).toHaveBeenCalledTimes(1);
+    expect(transport.write).toHaveBeenCalledWith({
+      label: 'MyLabel',
+      level: expect.stringContaining('debug'),
+      message: 'my message',
+      timestamp: expect.any(String),
+      [Symbol.for('level')]: 'debug',
+      [Symbol.for('splat')]: [ undefined ],
+      [Symbol.for('message')]: expect.any(String),
+    });
+  });
+});