Question

我正在尝试在Swift中使用CocoaLumberjack。使用pod＆＃39; CocoaLumberjack / Swift＆＃39;

在目标C中，我执行以下操作

int ddLogLevel = DDLogLevelOff;

@implementation CLDDLoglevel
+ (int)ddLogLevel
{
    return ddLogLevel;
}

+ (void)setLogLevel:(int)logLevel
{
    ddLogLevel = logLevel;
}

在Swift中，我不明白该怎么做

我创建了一个实现DDRegisteredDynamicLogging

的类

这给了我两个方法

static func ddLogLevel() -> DDLogLevel {
}
static func ddSetLogLevel(level: DDLogLevel) {
}

但是我仍然不清楚在哪里以及如何声明DDLogLevel来设置和获取

相当于 int ddLogLevel = DDLogLevelOff ;

我试过

static var ddLogLevel: DDLogLevel = defaultDebugLevel

Answer 1

对于仍在寻找在Swift中动态更改日志记录级别的简便方法的人，只需随时使用dynamicLogLevel。例如：

dynamicLogLevel = .info

Answer 2

它并不理想，但我已经让它适用于CocoaLumberjack 2.2.0，如下所示：

将以下内容添加到您的课程中：
```
static var ddLogLevel: DDLogLevel = .Off

static func ddSetLogLevel(level: DDLogLevel) {
    ddLogLevel = level
}
```
这可确保CocoaLumberjack将您的类标识为已注册用于记录目的，并使您能够在运行时更改其日志记录级别。
记录时，请使用例如
```
DDLogWarn("Danger, Will Robinson", level: self.dynamicType.ddLogLevel)
```
level参数至关重要。没有它，将始终记录该消息。

我希望CocoaLumberjack的Swift支持能够成熟并消除这些绊脚石。在那之前，快乐的伐木！

Answer 3

此discussion中提供了另一种解决方案。它暂时适用于我，我正在尝试它。

您必须通过定义

来采用UnitDDLoggable

  var logPrefix = ""
  var logLevel = DDLogLevel.Debug

它允许人们简单地写：

DDLogWarn("Danger, Will Robinson"

swift 2.3的代码：

import CocoaLumberjackSwift

/// Base protocol for unit specific logging. Generally you won't implement this protocol directly, you will
/// implement one of the protocols that inherit from it
protocol UnitLoggable {
    /// Prefix to append to each log line, should include a trailing space to separate it from the log message
    var logPrefix:String { get }
}

/// Implment this protocol to use CocoaLumberjack logging with the level controlable at the file level
protocol UnitDDLoggable : UnitLoggable {
    /// Lumberjack log level to use for this code unit, Lumberjack log calls in this unit will use this level
    /// not the default log level, to use the shared lumberjack level this property should return defaultDebugLevel
    var logLevel:DDLogLevel { get }
}

extension UnitDDLoggable {
    final func DDLogDebug(@autoclosure logText: () -> String, context: Int = 0, file: StaticString = #file, function: StaticString = #function, line: UInt = #line, tag: AnyObject? = nil, asynchronous async: Bool = true) {
        SwiftLogMacro(async, level: logLevel, flag: .Debug, context: context, file: file, function: function, line: line, tag: tag, string: logPrefix + logText())
    }

    final func DDLogInfo(@autoclosure logText: () -> String, context: Int = 0, file: StaticString = #file, function: StaticString = #function, line: UInt = #line, tag: AnyObject? = nil, asynchronous async: Bool = true) {
        SwiftLogMacro(async, level: logLevel, flag: .Info, context: context, file: file, function: function, line: line, tag: tag, string: logPrefix + logText())
    }

    final func DDLogWarn(@autoclosure logText: () -> String, context: Int = 0, file: StaticString = #file, function: StaticString = #function, line: UInt = #line, tag: AnyObject? = nil, asynchronous async: Bool = true) {
        SwiftLogMacro(async, level: logLevel, flag: .Warning, context: context, file: file, function: function, line: line, tag: tag, string: logPrefix + logText())
    }

    final func DDLogVerbose(@autoclosure logText: () -> String, context: Int = 0, file: StaticString = #file, function: StaticString = #function, line: UInt = #line, tag: AnyObject? = nil, asynchronous async: Bool = true) {
        SwiftLogMacro(async, level: logLevel, flag: .Verbose, context: context, file: file, function: function, line: line, tag: tag, string: logPrefix + logText())
    }

    final func DDLogError(@autoclosure logText: () -> String,context: Int = 0, file: StaticString = #file, function: StaticString = #function, line: UInt = #line, tag: AnyObject? = nil, asynchronous async: Bool = false) {
        SwiftLogMacro(async, level: logLevel, flag: .Error, context: context, file: file, function: function, line: line, tag: tag, string: logPrefix + logText())
    }
}

CocoaLumberjack在Swift中动态记录

3 个答案: