// Copyright (C) 2015 Nippon Telegraph and Telephone Corporation.
//
// Licensed 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";

package api;

// Interface exported by the server.

service Grpc {
  rpc GetNeighbors(Arguments) returns (stream Peer) {}
  rpc GetNeighbor(Arguments) returns (Peer) {}
  rpc GetRib(Arguments) returns (stream Destination) {}
  rpc GetAdjRib(Arguments) returns (stream Path) {}
  rpc Reset(Arguments) returns (Error) {}
  rpc SoftReset(Arguments) returns (Error) {}
  rpc SoftResetIn(Arguments) returns (Error) {}
  rpc SoftResetOut(Arguments) returns (Error) {}
  rpc Shutdown(Arguments) returns (Error) {}
  rpc Enable(Arguments) returns (Error) {}
  rpc Disable(Arguments) returns (Error) {}
  rpc ModPath(stream ModPathArguments) returns (stream Error) {}
  rpc GetPolicyPrefixes(PolicyArguments) returns (stream PrefixSet) {}
  rpc GetPolicyPrefix(PolicyArguments) returns (PrefixSet) {}
  rpc ModPolicyPrefix(stream PolicyArguments) returns (stream Error) {}
}

message Error {
    enum ErrorCode {
        SUCCESS = 0;
        FAIL = 1;
    }
    ErrorCode code = 1;
    string msg = 2;
}

message Arguments {
    Resource resource = 1;
    AddressFamily af = 2;
    string router_id = 3;
}

message ModPathArguments {
    Resource resource = 1;
    Path path = 2;
}

message PolicyArguments {
    Resource resource = 1;
	Operation operation = 2;
	string name = 3;
	PrefixSet prefix_set = 4;
}

enum Resource {
    GLOBAL = 0;
    LOCAL = 1;
    ADJ_IN = 2;
    ADJ_OUT = 3;
	POLICY_PREFIX = 4;
}

enum Operation {
    ADD = 0;
    DEL = 1;
    DEL_ALL = 2;
}

enum AFI {
    UNKNOWN_AFI = 0;
    IP = 1;
    IP6 = 2;
    L2VPN = 25;
}

enum SAFI {
    UNKNOWN_SAFI = 0;
    UNICAST = 1;
    MULTICAST = 2;
    MPLS_LABEL = 4;
    ENCAP = 7;
    VPLS = 65;
    EVPN = 70;
    MPLS_VPN = 128;
    MPLS_VPN_MULTICAST = 129;
    ROUTE_TARGET_CONSTRAINTS = 132;
}

message AddressFamily {
    AFI Afi = 1;
    SAFI Safi = 2;
}

enum BGP_CAPABILITY {
    UNKNOWN_CAP = 0;
    MULTIPROTOCOL = 1;
    ROUTE_REFRESH = 2;
    CARRYING_LABEL_INFO = 4;
    GRACEFUL_RESTART = 64;
    FOUR_OCTET_AS_NUMBER = 65;
    ENHANCED_ROUTE_REFRESH = 70;
    ROUTE_REFRESH_CISCO = 128;
}

message GracefulRestartTuple {
    AddressFamily af = 1;
    uint32 flags = 2;
}

message GracefulRestart {
    uint32 flags = 1;
    uint32 time = 2;
    repeated GracefulRestartTuple tuples = 3;
}

message Capability {
    BGP_CAPABILITY code = 1;
    AddressFamily multi_protocol = 2;
    GracefulRestart graceful_restart = 3;
    uint32 asn = 4;
}

enum Origin {
    IGP = 0;
    EGP = 1;
    INCOMPLETE = 2;
}

message Aggregator {
    uint32 as = 1;
    string address = 2;
}

enum EXTENDED_COMMUNITIE_TYPE {
    TWO_OCTET_AS_SPECIFIC = 0;
    IP4_SPECIFIC = 1;
    FOUR_OCTET_AS_SPECIFIC = 2;
    OPAQUE = 3;
}

enum EXTENDED_COMMUNITIE_SUBTYPE {
    ORIGIN_VALIDATION = 0;
    ROUTE_TARGET = 2;
    ROUTE_ORIGIN = 3;
}

message ExtendedCommunity {
    EXTENDED_COMMUNITIE_TYPE type = 1;
    EXTENDED_COMMUNITIE_SUBTYPE subtype = 2;
    bool is_transitive = 3;
    uint32 asn = 4;
    string ipv4 = 5;
    uint32 local_admin = 6;
}

enum TUNNEL_TYPE {
    UNKNOWN_TUNNEL_TYPE = 0;
    L2TPV3_OVER_IP = 1;
    GRE = 2;
    IP_IN_IP = 7;
    VXLAN = 8;
    NVGRE = 9;
    MPLS = 10;
    MPLS_IN_GRE = 11;
    VXLAN_GRE = 12;
}

enum EVPN_TYPE {
    UNKNOWN_EVPN_TYPE = 0;
    ROUTE_TYPE_ETHERNET_AUTO_DISCOVERY = 1;
    ROUTE_TYPE_MAC_IP_ADVERTISEMENT    = 2;
    INCLUSIVE_MULTICAST_ETHERNET_TAG   = 3;
    ETHERNET_SEGMENT_ROUTE             = 4;
}

message EVPNNlri {
    EVPN_TYPE type = 1;
//    EvpnAutoDiscoveryRoute = 2;
    EvpnMacIpAdvertisement mac_ip_adv = 3;
//    EvpnInclusiveMulticastEthernetTag = 4;
//    EvpnEthernetSegmentRoute = 5;
}

message EvpnMacIpAdvertisement {
    string mac_addr = 1;
    uint32 mac_addr_len = 2;
    string ip_addr = 3;
    uint32 ip_addr_len = 4;
    string rd = 5;
    string esi = 6;
    uint32 etag = 7;
    repeated uint32 labels = 8;
}

message RTNlri {
    uint32 asn = 1;
    ExtendedCommunity target = 2;
    uint32 length = 3;
}

message Nlri {
    AddressFamily af = 1;
    string prefix = 2;
    string nexthop = 3;
    EVPNNlri evpn_nlri = 4;
    RTNlri rt_nlri = 5;
}

enum ENCAP_SUBTLV_TYPE {
    UNKNOWN_SUBTLV_TYPE = 0;
    ENCAPSULATION = 1;
    PROTOCOL = 2;
    COLOR = 4;
}

message TunnelEncapSubTLV {
    ENCAP_SUBTLV_TYPE type = 1;
    string value = 2;
    uint32 key = 3;
    string cookie = 4;
    uint32 protocol = 5;
    uint32 color = 6;
}

message TunnelEncapTLV {
    TUNNEL_TYPE type = 1;
    repeated TunnelEncapSubTLV sub_tlv = 2;
}

enum BGP_ATTR_TYPE {
    UNKNOWN_ATTR = 0;
    ORIGIN = 1;
    AS_PATH = 2;
    NEXT_HOP = 3;
    MULTI_EXIT_DISC = 4;
    LOCAL_PREF = 5;
    ATOMIC_AGGREGATE = 6;
    AGGREGATOR = 7;
    COMMUNITIES = 8;
    ORIGINATOR_ID = 9;
    CLUSTER_LIST = 10;
    MP_REACH_NLRI = 14;
    MP_UNREACH_NLRI = 15;
    EXTENDED_COMMUNITIES = 16;
    AS4_PATH = 17;
    AS4_AGGREGATOR = 18;
    TUNNEL_ENCAP = 23;
}

message PathAttr {
    BGP_ATTR_TYPE type = 1;
    repeated string value = 2;
    Origin origin = 3;
    repeated uint32 as_path = 4;
    string nexthop = 5;
    uint32 metric = 6;
    uint32 pref = 7;
    Aggregator aggregator = 8;
    repeated uint32 communites = 9;
    string originator = 10;
    repeated string cluster = 11;
    repeated Nlri nlri = 12;
    repeated TunnelEncapTLV tunnel_encap = 13;
}

message Path {
    Nlri nlri = 1;
    string nexthop = 2;
    int64 age = 3;
    repeated PathAttr attrs = 4;
    bool best = 5;
    bool is_withdraw = 6;
}

message Destination {
    string prefix = 1;
    repeated Path paths = 2;
    uint32 best_path_idx = 3;
}

message PeerConf {
    string remote_ip = 1;
    string id = 2;
    uint32 remote_as = 3;
    bool cap_refresh = 4;
    bool cap_enhanced_refresh = 5;
    repeated Capability remote_cap = 6;
    repeated Capability local_cap = 7;
    uint32 holdtime = 8;
    uint32 keepalive_interval = 9;
}

message PeerInfo {
    string bgp_state = 1;
    string admin_state = 2;
    uint32 fsm_established_transitions = 3;
    uint32 total_message_out = 4;
    uint32 total_message_in = 5;
    uint32 update_message_out = 6;
    uint32 update_message_in = 7;
    uint32 keep_alive_message_out = 8;
    uint32 keep_alive_message_in = 9;
    uint32 open_message_out = 10;
    uint32 open_message_in = 11;
    uint32 notification_out = 12;
    uint32 notification_in = 13;
    uint32 refresh_message_out = 14;
    uint32 refresh_message_in = 15;
    uint32 discarded_out = 16;
    uint32 discarded_in = 17;
    int64 uptime = 18;
    int64 downtime = 19;
    string last_error = 20;
    uint32 received = 21;
    uint32 accepted = 22;
    uint32 advertized = 23;
    uint32 out_q = 24;
    uint32 flops = 25;
    uint32 negotiated_holdtime = 26;
    uint32 keepalive_interval = 27;
}

message Peer {
    PeerConf conf = 1;
    PeerInfo info = 2;
}

message Prefix {
	string address  = 1;
	uint32 mask_length = 2;
	string mask_length_range = 3;
}

message PrefixSet {
	string prefix_set_name = 1;
    repeated Prefix prefix_list = 2;
}