import type { PhysicalDatabaseCapacityPolicy } from './capacityPolicy.js';
/**
 * Agent tag key for the customer-managed deployment name that identifies a
 * worker's physical database pool, `(organizationId, agentName, engine)`.
 *
 * Published on its own rather than read out of
 * `databaseLifecycle:capacityPolicies`, so a customer who wants no proactive
 * scaling still gets a resolvable pool. One value, e.g. `customer-opa`.
 */
export declare const DATABASE_LIFECYCLE_TAG_AGENT_NAME = "databaseLifecycle:agentName";
export declare class PhysicalPoolIdentityError extends Error {
    readonly code = "physical_pool_identity_invalid";
    constructor(message: string);
}
/**
 * The single physical pool a worker's registration names, or undefined when it
 * published none.
 *
 * Throws {@link PhysicalPoolIdentityError} when the registration names more
 * than one pool. Guessing between them would provision infrastructure under
 * one deployment's Terraform state and hand it to another, so callers must
 * either refuse the registration or withhold the identity.
 *
 * Falls back to the capacity policy's name when the tag is absent, for a
 * worker predating {@link DATABASE_LIFECYCLE_TAG_AGENT_NAME} that is still
 * rolling: the policy names the same pool, so identity stays unambiguous.
 */
export declare function parsePhysicalPoolAgentNameTag(published: string[] | undefined, capacityPolicies?: readonly PhysicalDatabaseCapacityPolicy[]): string | undefined;
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