/**
 * Agent tag key for proactive physical-instance capacity thresholds.
 * Each value encodes one pool policy (see {@link encodeCapacityPolicyTag} /
 * {@link parseCapacityPolicyTags}).
 *
 * Versioned wire format (pipe-delimited, one tag value per pool):
 *   `v2|{encodedAgentName}|{engine}|{thresholdType}|{thresholdValue}`
 *
 * Example:
 *   `v2|customer-opa|postgres|minAvailableCapacityPercent|20`
 */
export declare const DATABASE_LIFECYCLE_TAG_CAPACITY_POLICIES = "databaseLifecycle:capacityPolicies";
/**
 * Engines App Databases can provision. AWS only: managed Aurora PostgreSQL or
 * RDS PostgreSQL with IAM database authentication. This is the allowlist for
 * every wire surface — request bodies, query parameters, capacity-policy tags,
 * and the `databaseLifecycle:engines` capability tag — so a worker advertising
 * anything else contributes no engines.
 */
export declare const DATABASE_ENGINES: readonly ["postgres"];
export type DatabaseEngine = (typeof DATABASE_ENGINES)[number];
export declare const PHYSICAL_DATABASE_CAPACITY_THRESHOLD_TYPES: readonly ["minAvailableCapacityPercent"];
export type PhysicalDatabaseCapacityThresholdType = (typeof PHYSICAL_DATABASE_CAPACITY_THRESHOLD_TYPES)[number];
export type PhysicalDatabaseCapacityPolicy = {
    agentName: string;
    engine: DatabaseEngine;
    thresholdType: 'minAvailableCapacityPercent';
    thresholdValue: number;
};
export type PhysicalDatabasePoolKey = {
    organizationId: string;
    agentName: string;
    engine: DatabaseEngine;
};
export declare class CapacityPolicyValidationError extends Error {
    readonly details: string[];
    readonly code = "capacity_policy_invalid";
    constructor(message: string, details?: string[]);
}
/** Stable idempotency and identity key for an organization physical pool. */
export declare function computePhysicalDatabasePoolKey(pool: PhysicalDatabasePoolKey): string;
export declare function encodeCapacityPolicyTag(policy: PhysicalDatabaseCapacityPolicy): string;
/**
 * Parse and validate capacity-policy tags. Fail closed: any malformed value
 * throws {@link CapacityPolicyValidationError}. Missing tag key ⇒ empty list
 * (no proactive provisioning for that agent).
 */
export declare function parseCapacityPolicyTags(published: string[] | undefined): PhysicalDatabaseCapacityPolicy[];
/**
 * Detect threshold disagreements for the same physical pool.
 * Profile tags are routing metadata and do not participate in identity.
 *
 * Registration callers soft-skip peer conflicts (rolling threshold updates);
 * the registering agent's own invalid tags still fail closed.
 */
export declare function validateCapacityPolicyCompatibility(candidatePolicies: readonly PhysicalDatabaseCapacityPolicy[], existingPolicies: readonly PhysicalDatabaseCapacityPolicy[]): void;
export declare function parseCapacityPolicyTag(raw: string): PhysicalDatabaseCapacityPolicy;
//# sourceMappingURL=capacityPolicy.d.ts.map