2 * ============LICENSE_START====================================================
4 * ===========================================================================
5 * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
6 * ===========================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
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18 * ============LICENSE_END====================================================
22 package com.att.cadi.enduser;
24 import java.io.IOException;
25 import java.net.ConnectException;
26 import java.security.GeneralSecurityException;
27 import java.util.Date;
28 import java.util.GregorianCalendar;
30 import org.onap.aaf.cadi.Access.Level;
31 import org.onap.aaf.cadi.CadiException;
32 import org.onap.aaf.cadi.LocatorException;
33 import org.onap.aaf.cadi.PropAccess;
34 import org.onap.aaf.cadi.client.Future;
35 import org.onap.aaf.cadi.client.Rcli;
36 import org.onap.aaf.cadi.client.Result;
37 import org.onap.aaf.cadi.client.Retryable;
38 import org.onap.aaf.cadi.config.Config;
39 import org.onap.aaf.cadi.oauth.TimedToken;
40 import org.onap.aaf.cadi.oauth.TokenClient;
41 import org.onap.aaf.cadi.oauth.TokenClientFactory;
42 import org.onap.aaf.cadi.oauth.TzClient;
43 import org.onap.aaf.cadi.util.FQI;
44 import org.onap.aaf.misc.env.APIException;
45 import org.onap.aaf.misc.env.util.Chrono;
47 import aafoauth.v2_0.Introspect;
48 import aafoauth.v2_0.Token;
51 public class OAuthExample {
52 private static TokenClientFactory tcf;
53 private static PropAccess access;
55 public final static void main(final String args[]) {
56 // These Objects are expected to be Long-Lived... Construct once
59 // This method will allow you to set "cadi_prop_files" (or any other property) on Command line
60 access = new PropAccess(args);
62 // access = PropAccess();
63 // Note: This style will load "cadi_prop_files" from VM Args
65 // Token aware Client Factory
67 tcf = TokenClientFactory.instance(access);
68 } catch (APIException | GeneralSecurityException | IOException | CadiException e1) {
69 access.log(e1, "Unable to setup OAuth Client Factory, Fail Fast");
74 // Obtain Endpoints for OAuth2 from Properties. Expected is "cadi.properties" file, pointed to by "cadi_prop_files"
75 String tokenServiceURL = access.getProperty(Config.AAF_OAUTH2_TOKEN_URL);
76 String tokenIntrospectURL = access.getProperty(Config.AAF_OAUTH2_INTROSPECT_URL);
80 final String endServicesURL = access.getProperty(Config.AAF_OAUTH2_HELLO_URL);
82 final int CALL_TIMEOUT = Integer.parseInt(access.getProperty(Config.AAF_CALL_TIMEOUT,Config.AAF_CALL_TIMEOUT_DEF));
85 //////////////////////////////////////////////////////////////////////
87 // Get and use an OAuth Client, which understands Token Management
88 //////////////////////////////////////////////////////////////////////
89 // Create a Token Client, that gets its tokens from expected OAuth Server
90 // In this example, it is AAF, but it can be the Alternate OAuth
92 TokenClient tc = tcf.newClient(tokenServiceURL); // can set your own timeout here (url, timeoutMilliseconds)
93 // Set your Application (MicroService, whatever) Credentials here
94 // These are how your Application is known, particularly to the OAuth Server.
95 // If AAF Token server, then its just the same as your other AAF MechID creds
96 // If it is the Alternate OAUTH, you'll need THOSE credentials. See that tool's Onboarding procedures.
97 String client_id = access.getProperty(Config.AAF_APPID);
98 String client_secret = access.getProperty(Config.AAF_APPPASS);
99 tc.client_creds(client_id, client_secret);
101 // If you are working with Credentials the End User, set username/password as appropriate to the OAuth Server
102 // tc.password(end_user_id, end_user_password);
104 // if you are setting client Credentials, you MAY NOT reuse this Client mid-transaction. You CAN reuse after setting
105 // tc.clearEndUser();
106 // You may want to see "Pooled Client" example, using special CADI utility
108 // With AAF, the Scopes you put in are the AAF Namespaces you want access to. Your Token will contain the
109 // AAF Permissions of the Namespaces (you can put in more than one), the user name (or client_id if no user_name),
110 // is allowed to see.
112 // Here's a trick to get the namespace out of a Fully Qualified AAF Identity (your MechID)
113 String ns = FQI.reverseDomain(client_id);
114 System.out.printf("\nNote: The AAF Namespace of FQI (Fully Qualified Identity) %s is %s\n\n",client_id, ns);
116 // Now, we can get a Token. Note: for "scope", use AAF Namespaces to get AAF Permissions embedded in
117 // Note: getToken checks if Token is expired, if so, then refreshes before handing back.
118 Result<TimedToken> rtt = tc.getToken(ns,"org.onap.test");
120 // Note: you can clear a Token's Disk/Memory presence by
121 // 1) removing the Token from the "token/outgoing" directory on the O/S
122 // 2) programmatically by calling "clearToken" with exact params as "getToken", when it has the same credentials set
123 // tc.clearToken("org.onap.aaf","org.onap.test");
125 // Result Object can be queried for success
127 TimedToken token = rtt.value;
128 print(token); // Take a look at what's in a Token
130 // Use this Token in your client calls with "Tokenized Client" (TzClient)
131 // These should NOT be used cross thread.
132 TzClient helloClient = tcf.newTzClient(endServicesURL);
133 helloClient.setToken(client_id, token);
135 // This client call style, "best" call with "Retryable" inner class covers finding an available Service
136 // (when Multi-services exist) for the best service, based (currently) on distance.
138 // the "Generic" in Type gives a Return Value for the Code, which you can set on the "best" method
139 // Note that variables used in the inner class from this part of the code must be "final", see "CALL_TIMEOUT"
140 String rv = helloClient.best(new Retryable<String>() {
142 public String code(Rcli<?> client) throws CadiException, ConnectException, APIException {
143 Future<String> future = client.read(null,"text/plain");
144 // The "future" calling method allows you to do other processing, such as call more than one backend
145 // client before picking up the result
146 // If "get" matches the HTTP Code for the method (i.e. read HTTP Return value is 200), then
147 if(future.get(CALL_TIMEOUT)) {
148 // Client Returned expected value
151 throw new APIException(future.code() + future.body());
156 // You want to do something with returned value. Here, we say "hello"
157 System.out.printf("\nPositive Response from Hello: %s\n",rv);
160 //////////////////////////////////////////////////////////////////////
162 // As a Service, read Introspection information as proof of Authenticated Authorization
163 //////////////////////////////////////////////////////////////////////
164 // CADI Framework (i.e. CadiFilter) works with the Introspection to drive the J2EE interfaces (
165 // i.e. if(isUserInRole("ns.perm|instance|action")) {...
167 // Here, however, is a way to introspect via Java
169 // now, call Introspect (making sure right URLs are set in properties)
170 // We need a Different Introspect TokenClient, because different Endpoint (and usually different Services)
171 TokenClient tci = tcf.newClient(tokenIntrospectURL);
172 tci.client_creds(client_id, client_secret);
173 Result<Introspect> is = tci.introspect(token.getAccessToken());
175 // Note that AAF will add JSON set of Permissions as part of "Content:", legitimate extension of OAuth Structure
176 print(is.value); // do something with Introspect Object
178 access.printf(Level.ERROR, "Unable to introspect OAuth Token %s: %d %s\n",
179 token.getAccessToken(),rtt.code,rtt.error);
182 access.printf(Level.ERROR, "Unable to obtain OAuth Token: %d %s\n",rtt.code,rtt.error);
185 } catch (CadiException | LocatorException | APIException | IOException e) {
190 /////////////////////////////////////////////////////////////
191 // Examples of Object Access
192 /////////////////////////////////////////////////////////////
193 private static void print(Token t) {
194 GregorianCalendar exp_date = new GregorianCalendar();
195 exp_date.add(GregorianCalendar.SECOND, t.getExpiresIn());
196 System.out.printf("Access Token\n\tToken:\t\t%s\n\tToken Type:\t%s\n\tExpires In:\t%d (%s)\n\tScope:\t\t%s\n\tRefresh Token:\t%s\n",
200 Chrono.timeStamp(new Date(System.currentTimeMillis()+(t.getExpiresIn()*1000))),
202 t.getRefreshToken());
205 private static void print(Introspect ti) {
206 if(ti==null || ti.getClientId()==null) {
207 System.out.println("Empty Introspect");
210 Date exp = new Date(ti.getExp()*1000); // seconds
211 System.out.printf("Introspect\n"
212 + "\tAccessToken:\t%s\n"
213 + "\tClient-id:\t%s\n"
214 + "\tClient Type:\t%s\n"
216 + "\tUserName:\t%s\n"
217 + "\tExpires: \t%d (%s)\n"
219 + "\tContent:\t\t%s\n",
223 ti.isActive()?Boolean.TRUE.toString():Boolean.FALSE.toString(),
226 Chrono.timeStamp(exp),
228 ti.getContent()==null?"":ti.getContent());
230 System.out.println();