NewCounter constructs new metric instance of type Counter with specified id and value.

NewGauge constructs new metric instance of type Gauge with specified id and value.

ParseFileConfig used to read configuration for server or agent from the specified JSON file.

defines counter metric type with integer values.

defines gauge metric type with float values.

AgentConfig describes customization settings for the agent.

Metrics describes JSON payload for metrics of different types.

ServerConfig describes customization settings for the server.

MetricType is a string-based type reserved for metric types.