Caller is the filename/line number of the calling function.

Capacity is a size.

CarbonLine is a direct line received from carbon protocol.

Collectd is a string indicating that incoming data is from collectd.

Config is the config passed to gateway.

ConfigFile is the filename of the config.

ContentLength is the HTTP header content-length value.

DebugAddr is the local address of a debug server.

Delta is the diff between two things, generally time.

Dir is a directory.

Direction is either listening or sending.

Env is environment variables.

Filename is a system file name.

ForwardTo is where the data is going.

ListenFrom is the listening config.

MetricType is the type of signalfx metric.

Name of the listener in the config file.

Protocol is the type of connection (signalfx/collectd/etc).

ReadLen is bytes read from a connection.

RemoteAddr of a network connection.

SHA1 is a SHA1 hash of something.

StatKeepers are a list of datapoint keepers.

Struct is the name of a go struct.

Time is the localtime of the log statement.

TotalPipeline is the total number of things buffered and downstream of a forwarder.

WavefrontLine is a direct line received from wavefront protocol.