logger

type Log ¶

type Log func(...interface{})

Log lets clients output log lines into the previously specified writer. Different argument types –listed below– will be used to define the log line composition. The order is important, as arguments can override. By default, info log lines are provided.

• `context.Context` Known execution indicators are extracted from the context and provided in the log line as tags.
• `string` The argument will be used as the log message.
• `error` The error message will be used as the log message. An error log line will be provided. Error details will be extracted and used as tags.
• `kv.Pair` Each pair will be used as a log line tag.

Other types will be ignored.

func New(w io.Writer, o Output) Log

type Output ¶

type Output int

Output defines a way to format log lines before sending them to the writer.

const (
	// PlainOutput writes plain text into the log writer.
	PlainOutput Output = iota

	// JSONOutput writes json encoded text into the log writer.
	JSONOutput
)