/*
 * 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";

import "language-agent/Downstream.proto";
import "common/trace-common.proto";

service InstanceDiscoveryService {
    rpc registerInstance (ApplicationInstance) returns (ApplicationInstanceMapping) {
    }

    rpc heartbeat (ApplicationInstanceHeartbeat) returns (Downstream) {
    }

}

message ApplicationInstance {
    int32 applicationId = 1;
    string agentUUID = 2;
    int64 registerTime = 3;
    OSInfo osinfo = 4;
}

message ApplicationInstanceMapping {
    int32 applicationId = 1;
    int32 applicationInstanceId = 2;
}

message ApplicationInstanceRecover {
    int32 applicationId = 1;
    int32 applicationInstanceId = 2;
    int64 registerTime = 3;
    OSInfo osinfo = 4;
}

message ApplicationInstanceHeartbeat {
    int32 applicationInstanceId = 1;
    int64 heartbeatTime = 2;
}

message OSInfo {
    string osName = 1;
    string hostname = 2;
    int32 processNo = 3;
    repeated string ipv4s = 4;
}

//discovery service for ServiceName by Network address or application code
service ServiceNameDiscoveryService {
    rpc discovery (ServiceNameCollection) returns (ServiceNameMappingCollection) {
    }
}

message ServiceNameCollection {
    repeated ServiceNameElement elements = 1;
}

message ServiceNameMappingCollection {
    repeated ServiceNameMappingElement elements = 1;
}

message ServiceNameMappingElement {
    int32 serviceId = 1;
    ServiceNameElement element = 2;
}

message ServiceNameElement {
    string serviceName = 1;
    int32 applicationId = 2;
    SpanType srcSpanType = 3;
}