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lib/base/logger/Logger.dart

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+abstract class Logger {
+  static late Logger _logger;
+
+  static Logger getInstance() {
+    return _logger;
+  }
+
+  static void setInstance(Logger logger) {
+    _logger = logger;
+  }
+
+  void info(String msg, {String tag});
+  void warning(String msg, {String tag});
+  void error(String msg, {String tag});
+}
+
+class LoggerConfig {
+  String host;
+  String serviceName;
+  LoggerConfig({required this.host, required this.serviceName});
+}

lib/base/logger/impl/LokiLogger.dart

@@ -0,0 +1,72 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:EasyDartModule/base/logger/Logger.dart';
+import 'package:dio/dio.dart';
+
+enum LoggerLevel {
+  debug(1),
+  info(2),
+  warning(3),
+  error(4),
+  off(5),
+  ;
+
+  final int level;
+  const LoggerLevel(this.level);
+}
+
+class LokiLogger implements Logger {
+  final LoggerConfig? _config;
+  final Dio dio;
+  LoggerLevel level = LoggerLevel.info;
+  LokiLogger(this._config)
+      : dio = Dio(BaseOptions(
+            baseUrl: _config == null ? "" : _config.host,
+            headers: {
+              "Content-Type": "application/json",
+              "Content-Encoding": "gzip"
+            }));
+
+  @override
+  void info(String msg, {String? tag}) {
+    log(msg, level: LoggerLevel.info, tag: tag);
+  }
+
+  @override
+  void warning(String msg, {String? tag}) {
+    log(msg, level: LoggerLevel.warning, tag: tag);
+  }
+
+  @override
+  void error(String msg, {String? tag}) {
+    log(msg, level: LoggerLevel.error, tag: tag);
+  }
+
+  void log(String msg, {required LoggerLevel level, String? tag}) {
+    if (level.level < this.level.level) {
+      //日志等级小于设置的输出日志等级
+      return;
+    }
+    if (_config == null) {
+      print("$tag $level $msg");
+    } else {
+      //推送到loki服务器
+      //{_config.url}
+      var now = DateTime.now();
+      // 转换为纳秒
+      int nanoseconds = now.microsecondsSinceEpoch * 1000;
+      var zip = gzip.encode(utf8.encode(jsonEncode({
+        "streams": [
+          {
+            "stream": {"service_name": _config.serviceName},
+            "values": [
+              [nanoseconds.toString(), "$tag ${level.name.toUpperCase()} $msg"]
+            ]
+          }
+        ]
+      })));
+      dio.post("/loki/api/v1/push", data: zip);
+    }
+  }
+}