DataDogCounters

Performance counters that send their metrics to a DataDog service.

Extends: CachedCounters

Implements: IReferenceable, IReferenceable

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(correlationId: string): Promise<void>

correlationId: string - (optional) transaction id used to trace execution through the call chain.

configure

Configures a component by passing its configuration parameters.

public configure(config: ConfigParams): void

config: ConfigParams - (optional) transaction id used to trace execution through the call chain.

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(correlationId: string): Promise<void>

correlationId: string - (optional) transaction id used to trace execution through the call chain.

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();