NewFilterHook makes a new hook which does not forward to logstash, but simply enforces the prefix rules.

NewFilterHookWithPrefix make a new hook which does not forward to logstash, but simply enforces the specified prefix.

NewHook creates a new hook to a Logstash instance, which listens on `protocol`://`address`.

NewHookWithConn creates a new hook to a Logstash instance, using the supplied connection.

NewHookWithFields creates a new hook to a Logstash instance, which listens on `protocol`://`address`.

NewHookWithFieldsAndConn creates a new hook to a Logstash instance using the supplied connection.

NewHookWithFieldsAndConnAndPrefix creates a new hook to a Logstash instance using the suppolied connection and prefix.

NewHookWithFieldsAndPrefix creates a new hook to a Logstash instance, which listens on `protocol`://`address`.

Hook represents a connection to a Logstash instance.

Formatter generates json in logstash format.