DataDogCounters

Performance counters that send their metrics to a DataDog service.

Extends: CachedCounters

Implements: IReferenceable, IOpenable

Description

The DataDogCounters class allows you to create performance counters that send their metrics to a DataDog service.

Configuration parameters

  • connection(s):
    • discovery_key: (optional) key to retrieve the connection from IDiscovery
      • protocol: (optional) connection protocol: http or https (default: https)
      • host: (optional) host name or IP address (default: api.datadoghq.com)
      • port: (optional) port number (default: 443)
      • uri: (optional) resource URI or connection string with all parameters in it
  • credential:
    • access_key: DataDog client api key
  • options:
    • retries: number of retries (default: 3)
    • connect_timeout: connection timeout in milliseconds (default: 10 sec)
    • timeout: invocation timeout in milliseconds (default: 10 sec)

References

  • *:logger:*:*:1.0 - (optional) ILogger components to pass log messages
  • *:counters:*:*:1.0 - (optional) ICounters components to pass collected measurements
  • *:discovery:*:*:1.0 - (optional) IDiscovery services to resolve connection

Constructors

Creates a new instance of the class.

public constructor()

Instance methods

close

Closes a component and frees used resources.

public close(context: string): Promise<void>

  • context: string - (optional) Basic implementation of an execution context.

configure

Configures a component by passing its configuration parameters.

public configure(config: ConfigParams): void

  • config: ConfigParams - (optional) Basic implementation of an execution context..

isOpen

Checks if the component is open.

public isOpen(): boolean

  • returns: boolean - true if the component has been opened and false otherwise.

open

Opens the component.

public open(context: Context): Promise<void>

  • context: Context - (optional) Basic implementation of an execution context.

save

Saves the current counters' measurements.

protected save(counters: Counter[]): void

  • counters: Counter[] - current counters' measurements to be saved.

setReferences

Sets references to dependent components.

public setReferences(references: IReferences): void

  • references: IReferences - references to locate the component’s dependencies.

Examples

let counters = new DataDogCounters();
counters.configure(ConfigParams.fromTuples(
    "credential.access_key", "827349874395872349875493"
));

await counters.open("123");
counters.increment("mycomponent.mymethod.calls");
let timing = counters.beginTiming("mycomponent.mymethod.exec_time");

try {
    ...
} finally {
    timing.endTiming();
}

counters.dump();

See also