import { ComposedMetricsManager } from '../../composed-metrics';
import { ElasticityStrategyManager, ElasticityStrategyService } from '../../elasticity';
import { MetricsSourcesManager } from '../../metrics';
import { OrchestratorGateway } from '../../orchestrator';
import { SloControlLoop, SloEvaluator } from '../../slo';
import { PolarisTransformationServiceManager } from '../../transformation';
/**
 * @returns The instance of the `PolarisRuntime` singleton or `undefined` if it has not been initialized yet.
 */
export declare function getPolarisRuntime(): PolarisRuntime;
/**
 * @returns The instance of the `PolarisRuntime` singleton.
 * @throws An error if the `PolarisRuntime` singleton has not yet been initialized.
 */
export declare function getPolarisRuntimeOrThrow(): PolarisRuntime;
/**
 * Sets the `PolarisRuntime` singleton.
 */
export declare function initPolarisRuntime(runtime: PolarisRuntime): void;
/**
 * Interface that must be implemented by a class that exposes a Polaris runtime.
 *
 * User `getPolarisRuntime()` to obtain an instance of the `PolarisRuntime` singleton.
 *
 * Use `initPolarisRuntime()` to set the instance of the `PolarisRuntime` singleton.
 */
export interface PolarisRuntime extends OrchestratorGateway {
    /**
     * The `PolarisTransformationService` that should be used for converting between orchestrator-independent Polaris objects
     * and orchestrator-specific plain objects, which can be serialized.
     */
    transformer: PolarisTransformationServiceManager;
    /**
     * The `ElasticityStrategyService` that should be used for creating and configuring elasticity strategies.
     */
    elasticityStrategyService: ElasticityStrategyService;
    /**
     * The `MetricsSourcesManager` that can be used to register new metrics sources and for obtaining existing ones.
     */
    metricsSourcesManager: MetricsSourcesManager;
    /**
     * Creates an instance of the `SloEvaluator` specific to this runtime implementation.
     */
    createSloEvaluator(): SloEvaluator;
    /**
     * Creates an instance of the `SloControlLoop` specific to this runtime implementation.
     */
    createSloControlLoop(): SloControlLoop;
    /**
     * Creates an `ElasticityStrategyManager` instance.
     */
    createElasticityStrategyManager(): ElasticityStrategyManager;
    /**
     * Creates a new `ComposedMetricsManager` for computing composed metrics in a dedicated controller.
     */
    createComposedMetricsManager(): ComposedMetricsManager;
}