ErrorInheritf creates a new error.

ErrorPermf returns permanent error.

ErrorTempf returns temporary error.

IsErrorTemporary tries to guess if an error is temporary or fatal If unsure - report as temporary.

LoggerCreate creates a logger.

LoggerHeader returns a log header for a particular source.

RetryForever executes the provided function F() from RetryParams until succeeded It logs to logger, increments error counter and reports to prometheus (if any of these were provided).

Error is a common error type with permanent flag.

Logger is embedded by sinks & sources structs.

RetryParams are params for RetryForever.

Common is a common set of functions embedded by sinks & sources.

Source is an interface implementing a source for logs.