/*
 * 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.
 *
 */

syntax = "proto3";

option java_multiple_files = true;
option java_package = "org.apache.skywalking.apm.network.language.agent";
option csharp_namespace = "SkyWalking.NetworkProtocol";
option go_package = "skywalking/network/language/agent/v1";

message UpstreamSegment {
    repeated UniqueId globalTraceIds = 1;
    bytes segment = 2; // the byte array of TraceSegmentObject
}

enum SpanTypeV1 {
    Entry = 0;
    Exit = 1;
    Local = 2;
}

message UniqueId {
    repeated int64 idParts = 1;
}

enum RefTypeV1 {
    CrossProcess = 0;
    CrossThread = 1;
}

enum SpanLayerV1 {
    Unknown = 0;
    Database = 1;
    RPCFramework = 2;
    Http = 3;
    MQ = 4;
    Cache = 5;
}