Package config contains configuration structures and related helper logic for all agent components.

Package dpfilters has logic describing the filtering of unwanted metrics.

Package hostid contains methods that can be called upon agent start up to determine host-specific values that uniquely identify a particular host, particularly ids that can be used to correlate metrics coming from this host to other metrics generated elsewhere, such as AWS CloudWatch metrics.

Package propfilters has logic describing the filtering of unwanted properties.

Package services has service endpoint types.

Package writer contains the SignalFx writer.

NewAgent creates an unconfigured agent instance.

Startup the agent.

Status reads the text from the diagnostic socket and returns it if available.

VersionLine should be populated by the startup logic to contain version information that can be reported in diagnostics.

Agent is what hooks up observers, monitors, and the datapoint writer.