A logging backend for SwiftLog that sends log messages to SwiftyBeaver.
Add the LoggingSwiftyBeaver package as a dependency to your Package.swift file.
.package(url: "https://github.com/ShivaHuang/swift-log-SwiftyBeaver.git", from: "0.1.0")Add LoggingSwiftyBeaver to your target's dependencies.
.target(
name: "Example",
dependencies: [
.product(name: "LoggingSwiftyBeaver", package: "swift-log-SwiftyBeaver")
])import Logging
import LoggingSwiftyBeaverlet logger = Logger(label: "Example") { (label) in
SwiftyBeaver.LogHandler(label, destinations: [
ConsoleDestination()
])
}Alternatively, you can use SwiftyBeaver only in DEBUG build and don't print anything in RELEASE build:
let logger: Logger = {
Logger(label: "Example") { (label) in
#if DEBUG
return SwiftyBeaver.LogHandler(label, destinations: [
ConsoleDestination()
])
#else
return Logging.SwiftLogNoOpLogHandler()
#endif
}
}()Futher, you can custom format and set console output to short time, log level & message:
let logger: Logger = {
Logger(label: "Example") { (label) in
#if DEBUG
let console: ConsoleDestination = {
let destination = ConsoleDestination()
destination.format = "$DHH:mm:ss$d $L $M"
return destination
}()
return SwiftyBeaver.LogHandler(label, destinations: [
console
])
#else
return Logging.SwiftLogNoOpLogHandler()
#endif
}
}()// logging an informational message
logger.info("Hello World!")
// ouch, something went wrong
logger.error("Houston, we have a problem: \(problem)")It's a good habit to distinguish logs by levels. However, SwiftLog defines 7 levels while SwiftyBeaver has only 5. So an 1-to-1 mapping between SwiftLog and SwiftyBeaver is not possible. Following is a table for the mapping:
| SwiftLog | SwiftyBeaver |
|---|---|
trace |
verbose |
debug |
debug |
info |
info |
notice |
warning |
warning |
warning |
error |
error |
critical |
error |
This program was developed by @shivahuang as part of Taiwan Social Distancing.