Question 1

How do I set up remote logging with XLFacility for an iOS app?

Accepted Answer

Add XLTelnetServerLogger or XLHTTPServerLogger to XLSharedFacility in your app delegate. For example, instantiate the logger and set the port, then connect via telnet or a web browser to the device's IP address. The README provides code snippets for adding these loggers and accessing logs remotely.

Question 2

XLFacility vs CocoaLumberjack: which should I use?

Accepted Answer

XLFacility offers built-in remote logging servers and a no-dependency architecture, making it great for real-time debugging and extensibility. CocoaLumberjack is more established with a larger ecosystem and better Swift support, but XLFacility excels in customizability and Apple-specific features like UI overlays.

Question 3

Can XLFacility log messages to a SQLite database?

Accepted Answer

Yes, XLFacility includes XLDatabaseLogger which persists logs to a SQLite database. You can initialize it with a database path and later enumerate records for analysis, as shown in the 'Archiving Log Messages' section of the README.

Question 4

How do I capture NSLog output from third-party libraries in XLFacility?

Accepted Answer

Use the setCapturesStandardError: and setCapturesStandardOutput: methods on XLSharedFacility. This splits stderr and stdout output into log messages, though the README notes it may not work for all libraries due to how they write output.

Question 5

Is it safe to enable XLFacility's HTTP server in a production iOS app?

Accepted Answer

No, the README explicitly warns against shipping with XLTelnetServerLogger or XLHTTPServerLogger active by default due to security and privacy concerns. Instead, dynamically enable them only during development or via user-controlled settings.

Question 6

How can I customize the log format in XLFacility?

Accepted Answer

Set the 'format' property on any logger instance using specifiers like %l for level and %m for message. For example, [[XLStandardLogger sharedErrorLogger] setFormat:@"[%l | %q] %m"] changes the output to show level and queue, as demonstrated in the README.

XLFacility

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