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
|
/*
* ============LICENSE_START===================================================
* Copyright (c) 2018 Amdocs
* ============================================================================
* 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.
* ============LICENSE_END=====================================================
*/
package org.onap.pomba.contextbuilder.sdnc.util;
import com.bazaarvoice.jolt.Chainr;
import com.bazaarvoice.jolt.JsonUtils;
import com.google.gson.Gson;
import java.text.MessageFormat;
import java.util.List;
import java.util.UUID;
import javax.ws.rs.client.Client;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import org.json.JSONObject;
import org.onap.pomba.common.datatypes.ModelContext;
import org.onap.pomba.contextbuilder.sdnc.exception.AuditException;
import org.onap.pomba.contextbuilder.sdnc.service.rs.RestService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class RestUtil {
private static Logger log = LoggerFactory.getLogger(RestService.class);
public static final String INTERNAL_SERVER_ERROR = "Internal Server Error";
// HTTP headers
public static final String TRANSACTION_ID = "X-TransactionId";
public static final String FROM_APP_ID = "X-FromAppId";
public static final String AUTHORIZATION = "Authorization";
// Parameters for Query SDNC Model Data REST API URL
private static final String SERVICE_INSTANCE_ID = "serviceInstanceId";
private RestUtil() {
}
/**
* Validates the URL parameter.
* @throws AuditException if there is missing parameter
*/
public static void validateURL(String serviceInstanceId) throws AuditException {
if (serviceInstanceId == null || serviceInstanceId.isEmpty())
throw new AuditException("Invalid request URL, missing parameter: "+ SERVICE_INSTANCE_ID, Status.BAD_REQUEST);
}
public static void validateHeader(HttpHeaders headers, String sdncCtxBuilderBasicAuthorization) throws AuditException {
String fromAppId = headers.getRequestHeaders().getFirst(FROM_APP_ID);
if((fromAppId == null) || fromAppId.trim().isEmpty()) {
throw new AuditException("Missing header parameter: "+ FROM_APP_ID, Status.BAD_REQUEST);
}
String headerAuthorization = headers.getRequestHeaders().getFirst(AUTHORIZATION);
if((headerAuthorization == null) || headerAuthorization.trim().isEmpty()) {
throw new AuditException("Missing header parameter: "+ AUTHORIZATION, Status.BAD_REQUEST);
}
if((!headerAuthorization.contentEquals(sdncCtxBuilderBasicAuthorization))) {
throw new AuditException("Failed Basic "+ AUTHORIZATION, Status.UNAUTHORIZED);
}
}
/*
* The purpose is to keep same transaction Id from north bound interface to south bound interface
*/
public static String extractTranIdHeader(HttpHeaders headers) {
String transactionId = null;
transactionId = headers.getRequestHeaders().getFirst(TRANSACTION_ID);
if((transactionId == null) || transactionId.trim().isEmpty()) {
transactionId = UUID.randomUUID().toString();
log.info("Header ", TRANSACTION_ID, " not present in request, generating new value: ", transactionId);
}
return transactionId;
}
/**
* For each AAI VnfInstance, use the AAI VfModuleId to make a rest call to SDNC VNF-API to create a list of all SDNC Vnfs.
* The URL for VNF-API is https://<SDN-C_HOST_NAME>:8543/restconf/config/VNF-API:vnfs/vnf-list/<vnf-id>
* @param sdncClient
* @param sdncBaseUrl
* @param authorization
* @param sdncGenericResourcePath
* @param serviceInstaceId
* @return
* @throws AuditException
*/
public static String getSdncGenericResource(Client sdncClient, String sdncBaseUrl, String authorization, String sdncGenericResourcePath,
String serviceInstaceId) throws AuditException {
String vnfSdncURL = sdncBaseUrl+generateSdncInstanceURL(sdncGenericResourcePath, serviceInstaceId);
// send rest request to SDNC VNF-API
return getSdncResource(sdncClient, vnfSdncURL, authorization);
}
public static ModelContext transform(String sdncResponse) {
List<Object> jsonSpec = JsonUtils.filepathToList("config/sdnccontextbuilder.spec");
Object jsonInput = JsonUtils.jsonToObject(sdncResponse);
Chainr chainr = Chainr.fromSpec(jsonSpec);
Object transObject = chainr.transform(jsonInput);
Gson gson = new Gson();
return gson.fromJson(JsonUtils.toPrettyJsonString(transObject), ModelContext.class);
}
private static String getSdncResource(Client sdncClient, String url, String authorization) throws AuditException {
Response response = sdncClient.target(url).request()
.header("Accept", "application/json")
.header(AUTHORIZATION, authorization).get();
if (response.getStatus() == 200) {
return response.readEntity(String.class);
} else if (response.getStatus() == 404) {
//Resource not found, generate empty JSON format
log.info("Return empty Json. Resource not found: ", url);
return new JSONObject().toString();
} else {
throw new AuditException(INTERNAL_SERVER_ERROR + " with " + response.getStatus());
}
}
private static String generateSdncInstanceURL(String siPath, String vfModuleLink) {
return MessageFormat.format(siPath, vfModuleLink);
}
}
|
