1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
// Copyright (C) 2014,2015 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.
package api
import (
log "github.com/Sirupsen/logrus"
"github.com/fukata/golang-stats-api-handler"
"github.com/gorilla/mux"
"net/http"
"strconv"
)
const (
_ = iota
REQ_NEIGHBOR
REQ_NEIGHBORS
REQ_ADJ_RIB_IN
REQ_ADJ_RIB_OUT
REQ_LOCAL_RIB
REQ_NEIGHBOR_SHUTDOWN
REQ_NEIGHBOR_RESET
REQ_NEIGHBOR_SOFT_RESET
REQ_NEIGHBOR_SOFT_RESET_IN
REQ_NEIGHBOR_SOFT_RESET_OUT
REQ_NEIGHBOR_ENABLE
REQ_NEIGHBOR_DISABLE
)
const (
BASE_VERSION = "/v1"
NEIGHBOR = "/bgp/neighbor"
NEIGHBORS = "/bgp/neighbors"
PARAM_REMOTE_PEER_ADDR = "remotePeerAddr"
PARAM_SHOW_OBJECT = "showObject"
PARAM_OPERATION = "operation"
STATS = "/stats"
)
const REST_PORT = 8080
// trigger struct for exchanging information in the rest and peer.
// rest and peer operated at different thread.
type RestRequest struct {
RequestType int
RemoteAddr string
ResponseCh chan *RestResponse
Err error
}
func NewRestRequest(reqType int, remoteAddr string) *RestRequest {
r := &RestRequest{
RequestType: reqType,
RemoteAddr: remoteAddr,
ResponseCh: make(chan *RestResponse),
}
return r
}
type RestResponse struct {
ResponseErr error
Data []byte
}
func (r *RestResponse) Err() error {
return r.ResponseErr
}
type RestServer struct {
port int
bgpServerCh chan *RestRequest
}
func NewRestServer(port int, bgpServerCh chan *RestRequest) *RestServer {
rs := &RestServer{
port: port,
bgpServerCh: bgpServerCh}
return rs
}
// Main thread of rest service.
// URL than can receive.
// get state of neighbors.
// -- curl -i -X GET http://<ownIP>:8080/v1/bgp/neighbors
// get state of neighbor.
// -- curl -i -X GET http://<ownIP>:8080/v1/bgp/neighbor/<remote address of target neighbor>
// get adj-rib-in of each neighbor.
// -- curl -i -X GET http://<ownIP>:8080/v1/bgp/neighbor/<remote address of target neighbor>/adj-rib-in
// get adj-rib-out of each neighbor.
// -- curl -i -X GET http://<ownIP>:8080/v1/bgp/neighbor/<remote address of target neighbor>/adj-rib-out
// get local-rib of each neighbor.
// -- curl -i -X GET http://<ownIP>:8080/v1/bgp/neighbor/<remote address of target neighbor>/local-rib
func (rs *RestServer) Serve() {
neighbor := BASE_VERSION + NEIGHBOR
neighbors := BASE_VERSION + NEIGHBORS
r := mux.NewRouter()
perPeerURL := "/{" + PARAM_REMOTE_PEER_ADDR + "}"
showObjectURL := "/{" + PARAM_SHOW_OBJECT + "}"
operationURL := "/{" + PARAM_OPERATION + "}"
r.HandleFunc(neighbors, rs.NeighborGET).Methods("GET")
r.HandleFunc(neighbor+perPeerURL, rs.NeighborGET).Methods("GET")
r.HandleFunc(neighbor+perPeerURL+showObjectURL, rs.NeighborGET).Methods("GET")
r.HandleFunc(neighbor+perPeerURL+operationURL, rs.NeighborPOST).Methods("POST")
// stats
r.HandleFunc(STATS, stats_api.Handler).Methods("GET")
// Handler when not found url
r.NotFoundHandler = http.HandlerFunc(NotFoundHandler)
http.Handle("/", r)
http.ListenAndServe(":"+strconv.Itoa(rs.port), nil)
}
func (rs *RestServer) neighbor(w http.ResponseWriter, r *http.Request, reqType int) {
params := mux.Vars(r)
remoteAddr, _ := params[PARAM_REMOTE_PEER_ADDR]
log.Debugf("Look up neighbor with the remote address : %v", remoteAddr)
//Send channel of request parameter.
req := NewRestRequest(reqType, remoteAddr)
rs.bgpServerCh <- req
//Wait response
res := <-req.ResponseCh
if e := res.Err(); e != nil {
log.Debug(e.Error())
http.Error(w, e.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json; charset=utf-8")
w.Write(res.Data)
}
func (rs *RestServer) NeighborPOST(w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
switch params[PARAM_OPERATION] {
case "shutdown":
rs.neighbor(w, r, REQ_NEIGHBOR_SHUTDOWN)
case "reset":
rs.neighbor(w, r, REQ_NEIGHBOR_RESET)
case "softreset":
rs.neighbor(w, r, REQ_NEIGHBOR_SOFT_RESET)
case "softresetin":
rs.neighbor(w, r, REQ_NEIGHBOR_SOFT_RESET_IN)
case "softresetout":
rs.neighbor(w, r, REQ_NEIGHBOR_SOFT_RESET_OUT)
case "enable":
rs.neighbor(w, r, REQ_NEIGHBOR_ENABLE)
case "disable":
rs.neighbor(w, r, REQ_NEIGHBOR_DISABLE)
default:
NotFoundHandler(w, r)
}
}
func (rs *RestServer) NeighborGET(w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
if _, ok := params[PARAM_REMOTE_PEER_ADDR]; !ok {
rs.neighbor(w, r, REQ_NEIGHBORS)
return
}
if showObject, ok := params[PARAM_SHOW_OBJECT]; ok {
switch showObject {
case "local-rib":
rs.neighbor(w, r, REQ_LOCAL_RIB)
case "adj-rib-in":
rs.neighbor(w, r, REQ_ADJ_RIB_IN)
case "adj-rib-out":
rs.neighbor(w, r, REQ_ADJ_RIB_OUT)
default:
NotFoundHandler(w, r)
}
} else {
rs.neighbor(w, r, REQ_NEIGHBOR)
}
}
func NotFoundHandler(w http.ResponseWriter, r *http.Request) {
http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
}
|
