echo/website/content/guide/customization.md

+++ title = "Customization" description = "Customizing Echo" [menu.main] name = "Customization" parent = "guide" weight = 3 +++

HTTP Error Handler

Default HTTP error handler sends an error as JSON with the following rules:

• If error is Echo#HTTPError it sends HTTP response with status code HTTPError.Code and message HTTPError.Message.
• If error is error it sends HTTP response with status code 500 - Internal Server Error and message error.Error().
• It logs the error.

You can set a custom HTTP error handler using Echo#HTTPErrorHandler.

Debugging

Echo#Debug enables/disables debug mode.

Logging

Log Output

Echo#Logger.SetOutput(io.Writer) sets the output destination for the logger. Default value os.Stdout

To completely disable logs use Echo#Logger.SetOutput(io.Discard) or Echo#Logger.SetLevel(log.OFF)

Log Level

Echo#Logger.SetLevel(log.Lvl)

SetLogLevel sets the log level for the logger. Default value OFF. Possible values:

• DEBUG
• INFO
• WARN
• ERROR
• OFF

You can also set a custom logger using Echo#Logger.