/**
 * Pipeline Store
 *
 * Manages the lifecycle of Alloy pipeline definitions:
 *   - CRUD operations on pipeline records
 *   - Persistence to ${stateDir}/alloy-pipelines.json
 *   - Drift detection (file vs. state vs. Alloy components)
 *   - Limit enforcement (max pipelines)
 *
 * Follows the same persistence pattern as CustomMetricsStore:
 *   - Versioned JSON file in stateDir
 *   - Load on start, save after each mutation
 *   - Survives process restarts
 *
 * State is the source of truth for what Grafana Lens has created.
 * Drift detection reconciles state with the filesystem and Alloy runtime.
 */
import type { PipelineDefinition, PipelineStatus, AlloyPipelineLimits, DriftReport } from "./types.js";
export declare class PipelineStore {
    private state;
    private readonly stateFilePath;
    private readonly limits;
    private readonly configDir;
    private readonly filePrefix;
    constructor(opts: {
        stateDir: string;
        configDir: string;
        filePrefix?: string;
        limits?: Partial<AlloyPipelineLimits>;
    });
    /** Load state from disk. Creates empty state if file doesn't exist. */
    load(): Promise<void>;
    /** Save current state to disk (atomic: write tmp then rename). */
    save(): Promise<void>;
    /** Generate a short unique pipeline ID (8 hex chars). */
    generateId(): string;
    /**
     * Add a new pipeline definition.
     * Throws if the name already exists or limits are exceeded.
     */
    add(pipeline: PipelineDefinition): void;
    /** Get a pipeline by name. Returns undefined if not found. */
    get(name: string): PipelineDefinition | undefined;
    /** List all pipelines, optionally filtered by status. */
    list(statusFilter?: PipelineStatus): PipelineDefinition[];
    /** Update a pipeline's fields. Returns false if not found. */
    update(name: string, updates: Partial<Pick<PipelineDefinition, "params" | "filePath" | "status" | "componentIds" | "configHash" | "lastError" | "signal" | "boundPorts" | "sampleQueries">>): boolean;
    /** Remove a pipeline by name. Returns false if not found. */
    remove(name: string): boolean;
    /** Get pipeline count and limits. */
    usage(): {
        count: number;
        max: number;
    };
    /** Generate the .alloy file path for a pipeline. */
    configFilePath(pipelineId: string, name: string): string;
    /** Compute SHA-256 hash of config content (for drift detection). */
    static configHash(content: string): string;
    /**
     * Check if any of the given ports conflict with active pipelines.
     * Returns the first conflict found, or null if no conflicts.
     */
    checkPortConflict(ports: number[], excludePipeline?: string): {
        port: number;
        pipelineName: string;
    } | null;
    /**
     * Detect drift between stored state and filesystem.
     * Checks file existence and hash for all active pipelines,
     * plus scans for orphan files in the config directory.
     */
    detectFileDrift(): Promise<DriftReport>;
    /**
     * Mark pipelines as drifted based on drift report.
     * Call this after detectFileDrift() to update state.
     */
    applyDriftReport(report: DriftReport): number;
}