/*!
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
import Context from '../../trace/context/Context';
import { Component } from '../Component';
import { Tag } from '../../Tag';
import Log from '../../Log';
import Segment from '../../trace/context/Segment';
import SegmentRef from '../../trace/context/SegmentRef';
import { SpanLayer, SpanType } from '../../proto/language-agent/Tracing_pb';
import { ContextCarrier } from '../context/ContextCarrier';
export declare type SpanCtorOptions = {
    context: Context;
    operation: string;
    id?: number;
    parentId?: number;
    peer?: string;
    layer?: SpanLayer;
    component?: Component;
};
export default abstract class Span {
    readonly context: Context;
    readonly type: SpanType;
    id: number;
    parentId: number;
    peer: string;
    operation: string;
    layer: SpanLayer;
    component: Component;
    depth: number;
    isCold: boolean;
    inherit?: Component;
    readonly tags: Tag[];
    readonly logs: Log[];
    readonly refs: SegmentRef[];
    startTime: number;
    endTime: number;
    errored: boolean;
    lastError: Error | null;
    constructor(options: SpanCtorOptions & {
        type: SpanType;
    });
    start(): void;
    stop(): void;
    async(): void;
    resync(): void;
    finish(segment: Segment): boolean;
    inject(): ContextCarrier;
    extract(carrier: ContextCarrier): this;
    hasTag(key: string): boolean;
    tag(tag: Tag, insert?: boolean): this;
    log(key: string, val: any): this;
    error(error: Error): this;
    refer(ref: SegmentRef): this;
    setOperation(operation: string): void;
}