😄

.gitignore

+.vscode
+node_modules/
\ No newline at end of file

aliyun-sls-appender.js

+const util = require('util');
+const dateFormat = require('date-format');
+const ALY = require('aliyun-sdk');
+
+function level(loggingEvent) {
+    return loggingEvent.level.levelStr;
+}
+
+function message(loggingEvent) {
+    return util.format(...loggingEvent.data);
+}
+
+function location(loggingEvent) {
+    if (loggingEvent.callStack) {
+        return `${loggingEvent.categoryName} ${loggingEvent.functionName}(${loggingEvent.fileName}:${loggingEvent.lineNumber}:${loggingEvent.columnNumber})`;
+    }
+    return loggingEvent.categoryName === 'default' ? undefined : loggingEvent.categoryName;
+}
+
+function time(loggingEvent, timeFormat, timezoneOffset) {
+    return dateFormat(timeFormat, loggingEvent.startTime);
+}
+
+module.exports.configure = function (config, layouts) {
+    if (!config.accessKeyId ||
+        !config.secretAccessKey ||
+        !config.endpoint ||
+        !config.apiVersion ||
+        !config.projectName ||
+        !config.logStoreName) {
+        console.error('config error');
+        return;
+    }
+
+    const layout = config.layout ?
+        layouts.layout(config.layout.type, config.layout) :
+        layouts.layout;
+    const timeFormat = config.timeFormat || dateFormat.ISO8601_WITH_TZ_OFFSET_FORMAT;
+
+    const sls = new ALY.SLS(config);
+    const { projectName, logStoreName, topic } = config;
+
+    const appender = function (loggingEvent) {
+        appender.queue.push({
+            time: Math.floor(loggingEvent.startTime.getTime() / 1000), //单位秒
+            contents: [{
+                key: 'level',
+                value: level(loggingEvent)
+            }, {
+                key: 'time',
+                value: time(loggingEvent, timeFormat)
+            }, {
+                key: 'message',
+                value: message(loggingEvent)
+            }, {
+                key: 'location',
+                value: location(loggingEvent)
+            }, {
+                key: 'log',
+                value: layout(loggingEvent)
+            }]
+        });
+
+    };
+
+    appender.queue = [];
+    appender.flushing = false;
+    appender.flushTime = Date.now();
+    appender.flushError = null;
+    appender.flushQueue = [];
+    appender.batchSize = config.batchSize || 4096;
+    appender.lingerMs = config.lingerMs || 2000;
+
+    appender.flush = function (size) {
+        if (appender.flushing) {
+            return;
+        }
+        if (!appender.flushError) {
+            appender.flushQueue = appender.queue.splice(0, appender.batchSize);
+        }
+        if (appender.flushQueue.length > 0) {
+            appender.flushing = true;
+            sls.putLogs({
+                projectName,
+                logStoreName,
+                logGroup: {
+                    logs: appender.flushQueue,
+                    topic
+                }
+            }, (err, data) => {
+                appender.flushError = err;
+                appender.flushTime = Date.now();
+                appender.flushing = false;
+                if (size === undefined) {
+                    size = appender.batchSize;
+                }
+                if (!err && appender.queue.length > size) {
+                    appender.flush();
+                }
+            });
+        }
+    };
+
+    const flushId = setInterval(() => {
+        if (appender.queue.length > appender.batchSize) {
+            appender.flush();
+        }
+        if (Date.now() > appender.flushTime + appender.lingerMs) {
+            appender.flush();
+        }
+    }, 1000);
+
+    appender.shutdown = function (done) {
+        clearInterval(flushId);
+        appender.flush(0);
+        if (done) {
+            done();
+        }
+    };
+    return appender;
+};
\ No newline at end of file

index.js

+module.exports = require('./aliyun-sls-appender');
\ No newline at end of file

log4js.json

+{
+    "appenders": {
+        "console": {
+            "type": "console"
+        },
+        "sls": {
+            "type": "aliyun-sls-appender",
+            "layout": {
+                "type": "pattern",
+                "pattern": "%d %p %c %m%n%s"
+            },
+            "accessKeyId": "",
+            "secretAccessKey": "",
+            "endpoint": "http://cn-hangzhou.log.aliyuncs.com",
+            "apiVersion": "2015-06-01",
+            "projectName": "",
+            "logStoreName": "",
+            "topic": ""
+        }
+    },
+    "categories": {
+        "default": {
+            "appenders": [
+                "console",
+                "sls"
+            ],
+            "level": "WARN",
+            "enableCallStack": true
+        }
+    }
+}
\ No newline at end of file

package-lock.json

+{
+  "name": "log4js-aliyun-sls",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "@protobufjs/aspromise": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npm.taobao.org/@protobufjs/aspromise/download/@protobufjs/aspromise-1.1.2.tgz",
+      "integrity": "sha1-m4sMxmPWaafY9vXQiToU00jzD78="
+    },
+    "@protobufjs/base64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npm.taobao.org/@protobufjs/base64/download/@protobufjs/base64-1.1.2.tgz",
+      "integrity": "sha1-TIVzDlm5ofHzSQR9vyQpYDS7JzU="
+    },
+    "@protobufjs/codegen": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npm.taobao.org/@protobufjs/codegen/download/@protobufjs/codegen-2.0.4.tgz",
+      "integrity": "sha1-fvN/DQEPsCitGtWXIuUG2SYoFcs="
+    },
+    "@protobufjs/eventemitter": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npm.taobao.org/@protobufjs/eventemitter/download/@protobufjs/eventemitter-1.1.0.tgz",
+      "integrity": "sha1-NVy8mLr61ZePntCV85diHx0Ga3A="
+    },
+    "@protobufjs/fetch": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npm.taobao.org/@protobufjs/fetch/download/@protobufjs/fetch-1.1.0.tgz",
+      "integrity": "sha1-upn7WYYUr2VwDBYZ/wbUVLDYTEU=",
+      "requires": {
+        "@protobufjs/aspromise": "^1.1.1",
+        "@protobufjs/inquire": "^1.1.0"
+      }
+    },
+    "@protobufjs/float": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npm.taobao.org/@protobufjs/float/download/@protobufjs/float-1.0.2.tgz",
+      "integrity": "sha1-Xp4avctz/Ap8uLKR33jIy9l7h9E="
+    },
+    "@protobufjs/inquire": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npm.taobao.org/@protobufjs/inquire/download/@protobufjs/inquire-1.1.0.tgz",
+      "integrity": "sha1-/yAOPnzyQp4tyvwRQIKOjMY48Ik="
+    },
+    "@protobufjs/path": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npm.taobao.org/@protobufjs/path/download/@protobufjs/path-1.1.2.tgz",
+      "integrity": "sha1-bMKyDFya1q0NzP0hynZz2Nf79o0="
+    },
+    "@protobufjs/pool": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npm.taobao.org/@protobufjs/pool/download/@protobufjs/pool-1.1.0.tgz",
+      "integrity": "sha1-Cf0V8tbTq/qbZbw2ZQbWrXhG/1Q="
+    },
+    "@protobufjs/utf8": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npm.taobao.org/@protobufjs/utf8/download/@protobufjs/utf8-1.1.0.tgz",
+      "integrity": "sha1-p3c2C1s5oaLlEG+OhY8v0tBgxXA="
+    },
+    "@types/long": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npm.taobao.org/@types/long/download/@types/long-4.0.1.tgz",
+      "integrity": "sha1-RZxl+hhn2v5qjzIsTFFpVmPMVek="
+    },
+    "@types/node": {
+      "version": "10.17.17",
+      "resolved": "https://registry.npm.taobao.org/@types/node/download/@types/node-10.17.17.tgz?cache=0&sync_timestamp=1585118009210&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2F%40types%2Fnode%2Fdownload%2F%40types%2Fnode-10.17.17.tgz",
+      "integrity": "sha1-ehgxY6nm/3INhlAtsjukqt5Zmbg="
+    },
+    "aliyun-sdk": {
+      "version": "1.12.3",
+      "resolved": "https://registry.npm.taobao.org/aliyun-sdk/download/aliyun-sdk-1.12.3.tgz",
+      "integrity": "sha1-JRRk3VssTis2zqAPyLQBtbb3Dsc=",
+      "requires": {
+        "node_memcached": "1.1.3",
+        "pomelo-protobuf": "^0.4.0",
+        "protobufjs": ">=5.0.3",
+        "xml2js": "0.4.4",
+        "xmlbuilder": "^13.0.2"
+      }
+    },
+    "date-format": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npm.taobao.org/date-format/download/date-format-3.0.0.tgz",
+      "integrity": "sha1-64eANlx9KxURB4+0keZHl4DzrZU="
+    },
+    "debug": {
+      "version": "4.1.1",
+      "resolved": "http://registry.npm.taobao.org/debug/download/debug-4.1.1.tgz",
+      "integrity": "sha1-O3ImAlUQnGtYnO4FDx1RYTlmR5E=",
+      "requires": {
+        "ms": "^2.1.1"
+      }
+    },
+    "flatted": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npm.taobao.org/flatted/download/flatted-2.0.1.tgz",
+      "integrity": "sha1-aeV8qo8OrLwoHS4stFjUb9tEngg="
+    },
+    "fs-extra": {
+      "version": "8.1.0",
+      "resolved": "https://registry.npm.taobao.org/fs-extra/download/fs-extra-8.1.0.tgz",
+      "integrity": "sha1-SdQ8RaiM2Wd2aMt74bRu/bjS4cA=",
+      "requires": {
+        "graceful-fs": "^4.2.0",
+        "jsonfile": "^4.0.0",
+        "universalify": "^0.1.0"
+      }
+    },
+    "graceful-fs": {
+      "version": "4.2.3",
+      "resolved": "https://registry.npm.taobao.org/graceful-fs/download/graceful-fs-4.2.3.tgz",
+      "integrity": "sha1-ShL/G2A3bvCYYsIJPt2Qgyi+hCM="
+    },
+    "jsonfile": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npm.taobao.org/jsonfile/download/jsonfile-4.0.0.tgz",
+      "integrity": "sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=",
+      "requires": {
+        "graceful-fs": "^4.1.6"
+      }
+    },
+    "log4js": {
+      "version": "6.1.2",
+      "resolved": "https://registry.npm.taobao.org/log4js/download/log4js-6.1.2.tgz?cache=0&sync_timestamp=1581378918424&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Flog4js%2Fdownload%2Flog4js-6.1.2.tgz",
+      "integrity": "sha1-BGiOH0uAgMEnt9zLDbHHWcuyXcQ=",
+      "requires": {
+        "date-format": "^3.0.0",
+        "debug": "^4.1.1",
+        "flatted": "^2.0.1",
+        "rfdc": "^1.1.4",
+        "streamroller": "^2.2.3"
+      }
+    },
+    "long": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npm.taobao.org/long/download/long-4.0.0.tgz",
+      "integrity": "sha1-mntxz7fTYaGU6lVSQckvdGjVvyg="
+    },
+    "ms": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npm.taobao.org/ms/download/ms-2.1.2.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fms%2Fdownload%2Fms-2.1.2.tgz",
+      "integrity": "sha1-0J0fNXtEP0kzgqjrPM0YOHKuYAk="
+    },
+    "node_memcached": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npm.taobao.org/node_memcached/download/node_memcached-1.1.3.tgz",
+      "integrity": "sha1-icFSr4itKIF/ANiRyZBFHV1xLqg=",
+      "requires": {
+        "debug": "^2.1.0"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.6.9",
+          "resolved": "http://registry.npm.taobao.org/debug/download/debug-2.6.9.tgz",
+          "integrity": "sha1-XRKFFd8TT/Mn6QpMk/Tgd6U2NB8=",
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "ms": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npm.taobao.org/ms/download/ms-2.0.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fms%2Fdownload%2Fms-2.0.0.tgz",
+          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+        }
+      }
+    },
+    "pomelo-protobuf": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npm.taobao.org/pomelo-protobuf/download/pomelo-protobuf-0.4.0.tgz",
+      "integrity": "sha1-5F6aCkRusYZn4MbhPutT1Hrdvag="
+    },
+    "protobufjs": {
+      "version": "6.8.9",
+      "resolved": "https://registry.npm.taobao.org/protobufjs/download/protobufjs-6.8.9.tgz",
+      "integrity": "sha1-CxrbzaqYPTacPZEIqXyBTtwDB1Q=",
+      "requires": {
+        "@protobufjs/aspromise": "^1.1.2",
+        "@protobufjs/base64": "^1.1.2",
+        "@protobufjs/codegen": "^2.0.4",
+        "@protobufjs/eventemitter": "^1.1.0",
+        "@protobufjs/fetch": "^1.1.0",
+        "@protobufjs/float": "^1.0.2",
+        "@protobufjs/inquire": "^1.1.0",
+        "@protobufjs/path": "^1.1.2",
+        "@protobufjs/pool": "^1.1.0",
+        "@protobufjs/utf8": "^1.1.0",
+        "@types/long": "^4.0.0",
+        "@types/node": "^10.1.0",
+        "long": "^4.0.0"
+      }
+    },
+    "rfdc": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npm.taobao.org/rfdc/download/rfdc-1.1.4.tgz",
+      "integrity": "sha1-unLME2egzNnPgahws7WL060H+MI="
+    },
+    "sax": {
+      "version": "0.6.1",
+      "resolved": "http://registry.npm.taobao.org/sax/download/sax-0.6.1.tgz",
+      "integrity": "sha1-VjsZx8HeiS4Jv8Ty/DDjwn8JUrk="
+    },
+    "streamroller": {
+      "version": "2.2.3",
+      "resolved": "https://registry.npm.taobao.org/streamroller/download/streamroller-2.2.3.tgz",
+      "integrity": "sha1-uVyfrUTi6JAF0kIUFIaztJYsLSg=",
+      "requires": {
+        "date-format": "^2.1.0",
+        "debug": "^4.1.1",
+        "fs-extra": "^8.1.0"
+      },
+      "dependencies": {
+        "date-format": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npm.taobao.org/date-format/download/date-format-2.1.0.tgz",
+          "integrity": "sha1-MdW16iEc9f12TNOLr50DPffhJc8="
+        }
+      }
+    },
+    "universalify": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npm.taobao.org/universalify/download/universalify-0.1.2.tgz?cache=0&sync_timestamp=1583531006552&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Funiversalify%2Fdownload%2Funiversalify-0.1.2.tgz",
+      "integrity": "sha1-tkb2m+OULavOzJ1mOcgNwQXvqmY="
+    },
+    "xml2js": {
+      "version": "0.4.4",
+      "resolved": "https://registry.npm.taobao.org/xml2js/download/xml2js-0.4.4.tgz?cache=0&sync_timestamp=1576776179444&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fxml2js%2Fdownload%2Fxml2js-0.4.4.tgz",
+      "integrity": "sha1-MREBAAMAiuGSQOuhdJe1fHKcVV0=",
+      "requires": {
+        "sax": "0.6.x",
+        "xmlbuilder": ">=1.0.0"
+      }
+    },
+    "xmlbuilder": {
+      "version": "13.0.2",
+      "resolved": "https://registry.npm.taobao.org/xmlbuilder/download/xmlbuilder-13.0.2.tgz?cache=0&sync_timestamp=1585220198684&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fxmlbuilder%2Fdownload%2Fxmlbuilder-13.0.2.tgz",
+      "integrity": "sha1-Aq4zYUtqBH0cMrU4nB/ayyvOR6c="
+    }
+  }
+}

package.json

+{
+  "name": "log4js-aliyun-sls",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "node test.js"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "aliyun-sdk": "^1.12.3",
+    "log4js": "^6.1.2"
+  }
+}

test.js

+const log4js = require('log4js');
+log4js.configure(require('./log4js.json'));
+
+const logger = log4js.getLogger("aliyun-sls-appender-test");
+logger.trace('Entering cheese testing');
+logger.debug('Got cheese.');
+logger.info();
+logger.warn('Cheese is quite smelly.');
+logger.error('Cheese is too ripe!', new Error("aa"));
+logger.fatal('Cheese was breeding ground for listeria.');
+log4js.shutdown(() => { console.log('log4js shutdown'); })
\ No newline at end of file