AddProtocolPrefix adds prefix "http://" to the URL if it does not already start with "http://" or "https://".

Coalesce returns the first non-zero value from the two provided arguments.

Contains checks if the slice s contains any of the values v.

CopyMap creates a shallow copy of the map.

FormatCounterMetricValue formats an int64 counter metric value as a string.

FormatGaugeMetricValue formats a float64 gauge metric value as a string.

NewRandom is constructor for creating an instance of Random.

ValidateHostnamePort checks if the given string is in the format "hostname:port".

Random generates random numbers.