我正在尝试使用开发人员身份验证提供程序登录我的Android应用程序，基于此演示：https://github.com/awslabs/aws-sdk-android-samples/tree/master/CognitoSyncDemo。我通过我们自己的后端成功登录获得了idToken，随后获得了访问我们AWS数据库的会话凭据。然后，我使用这些凭据对数据库进行POST。
但这只能工作一次，现在我再也无法通过，没有更改任何代码。我还通过http://docs.aws.amazon.com/apigateway/latest/developerguide/how-to-generate-sdk.html使用生成的SDK。我不确定这是否会导致任何错误。
这是我的DeveloperAuthenticationProvider：
public class AuthenticationProvider extends
AWSAbstractCognitoDeveloperIdentityProvider {
private static final String TAG = AuthenticationProvider.class.getSimpleName();
private static SocializeClient mSocializeClient;
private static final String developerProvider = Constants.AWS_PROVIDER_NAME;
private static final String cognitoSampleDeveloperAuthenticationAppEndpoint = UrlEndpoints.URL_DOMAIN;
public AuthenticationProvider(Context context, String accountId, String identityPoolId, Regions region) {
super(accountId, identityPoolId, region);
/*
* Initialize the client using which you will communicate with your
* backend for user authentication.
*/
AWSCredentialsProvider awsCredentialsProvider = new CognitoCachingCredentialsProvider(
context,
this,
region
);
ApiClientFactory factory = new ApiClientFactory()
.endpoint(cognitoSampleDeveloperAuthenticationAppEndpoint)
.credentialsProvider(awsCredentialsProvider);
mSocializeClient = factory.build(SocializeClient.class);
}
/*Only refreshes the login info, when it has expired*/
/*
* (non-Javadoc)
* @see com.amazonaws.auth.AWSCognitoIdentityProvider#refresh() In refresh
* method, you will have two flows:
*/
/*
* 1. When the app user uses developer authentication. In this case, make
* the call to your developer backend, from where call the
* GetOpenIdTokenForDeveloperIdentity API of Amazon Cognito service. Be sure to call update(), so as to
* set the identity id and the token received.
*/
/*
* 2.When the app user is not using the developer authentication, just call
* the refresh method of the AWSAbstractCognitoDeveloperIdentityProvider
* class which actually calls GetId and GetOpenIDToken API of Amazon
* Cognito.
*/
@Override
public String refresh() {
Log.i(TAG, "refresh");
// If there is a key with developer provider name in the logins map, it
// means the app user has used developer credentials
if (!loginsMap.isEmpty()
&& loginsMap.containsKey(developerProvider)) {
Log.i(TAG, "contains provider");
} else {
Log.i(TAG, "does not contain developer provider");
Map<String, String> logins = new HashMap<>();
logins.put(developerProvider, UserSingleton.imei);
setLogins(logins);
}
// TODO:: Temp code to login. Once available, need to add code to GetToken from SocializeClient
Login login = new Login();
login.setImei(UserSingleton.imei);
login.setPassword(UserSingleton.password);
LoginReponse loginReponse = mSocializeClient.socializeAuthLoginPost(login);
Log.i(TAG, "login response: " + loginReponse.getIdentityId() + " - token: " + loginReponse.getToken());
update(loginReponse.getIdentityId(), loginReponse.getToken());
Log.i(TAG, "updated");
return loginReponse.getToken();
}
/*
* (non-Javadoc)
* @see com.amazonaws.auth.AWSBasicCognitoIdentityProvider#getIdentityId()
*/
/*
* This method again has two flows as mentioned above depending on whether
* the app user is using developer authentication or not. When using
* developer authentication system, the identityId should be retrieved from
* the developer backend. In the other case the identityId will be retrieved
* using the getIdentityId() method which in turn calls Cognito GetId and
* GetOpenIdToken APIs.
*/
@Override
public String getIdentityId() {
Log.i(TAG, "getIdentityId");
identityId = CognitoSyncClientManager.credentialsProvider.getCachedIdentityId();
if (identityId == null) {
Log.i(TAG, "identityId is null");
if (!loginsMap.isEmpty()
&& loginsMap.containsKey(developerProvider)) {
Log.i(TAG, "grabbing identityId using logins map");
// TODO:: Temp code to login. Once available, need to add code to GetToken from SocializeClient
Login login = new Login();
login.setImei(loginsMap.get(developerProvider));
login.setPassword(UserSingleton.password);
LoginReponse loginReponse = mSocializeClient.socializeAuthLoginPost(login);
Log.i(TAG, "login response: " + loginReponse.getIdentityId() + " - token: " + loginReponse.getToken());
update(loginReponse.getIdentityId(), loginReponse.getToken());
return loginReponse.getIdentityId();
} else {
return super.getIdentityId();
}
} else {
return identityId;
}
}
/*
* (non-Javadoc)
* @see
* com.amazonaws.auth.AWSAbstractCognitoIdentityProvider#getProviderName()
* Return the developer provider name which you chose while setting up the
* identity pool in the Amazon Cognito Console
*/
@Override
public String getProviderName() {
return developerProvider;
}
/**
* This function validates the user credentials against the sample Cognito
* developer authentication application. After that it stores the key and
* token received from sample Cognito developer authentication application
* for all further communication with the application.
*
* @param imei
* @param password
*/
public void login(String imei, String password, Context context) {
Log.i(TAG, "login");
Login login = new Login();
login.setImei(imei);
login.setPassword(password);
new AuthenticationTask(context).execute(login);
}
public void publishProfile(Context context, Profile profile){
Log.i(TAG, "publishProfile");
ProfileKey profileKey = new ProfileKey();
profileKey.setUserID(identityId);
profile.setKey(profileKey);
new UploadProfileTask(context).execute(profile);
}
protected static SocializeClient getSocializeClientInstance() {
if (mSocializeClient == null) {
throw new IllegalStateException(
"Dev Auth Client not initialized yet");
}
return mSocializeClient;
}
}
这是我的AuthenticationTask以及我尝试登录的地方，然后获取凭据以访问AWS数据库：
public class AuthenticationTask extends
AsyncTask<Login, Void, Void> {
private static final String TAG = AuthenticationTask.class.getSimpleName();
// The user name or the developer user identifier you will pass to the
// Amazon Cognito in the GetOpenIdTokenForDeveloperIdentity API
private String mImei;
private String mPassword;
private GetCredentialsForIdentityResult credentialsForIdentityResult;
private boolean isSuccessful;
private final Context context;
public AuthenticationTask(Context context) {
this.context = context;
}
@Override
protected Void doInBackground(Login... params) {
Log.i(TAG, "doInBackground get refreshing threshold: " + CognitoCachingCredentialsProvider.DEFAULT_THRESHOLD_SECONDS);
mImei = params[0].getImei();
mPassword = params[0].getPassword();
Login login = params[0];
// if(mPassword == null){
// Log.i(TAG, "register");
// mPassword = Utils.generateRandomString();
// final Register register = new Register();
// register.setImei(mImei);
// register.setPassword(mPassword);
// login.setPassword(mPassword);
// RegisterResponse registerResponse = AuthenticationProvider.getSocializeClientInstance().socializeAuthRegisterPost(register);
// Log.i(TAG, "registerResponse: " + registerResponse.getCreated());
UserSingleton.password = mPassword;
UserSingleton.getInstance().saveRegistrationInfo();
Log.i(TAG, "imei: " + mImei);
// }
Log.i(TAG, "calling login post");
LoginReponse loginReponse = AuthenticationProvider.getSocializeClientInstance().socializeAuthLoginPost(login);
Log.i(TAG, "login response: " + loginReponse.getIdentityId() + " - token: " + loginReponse.getToken());
// Set up the loginsMap to send with the credentials request
Map<String, String> loginsMap = new HashMap<>();
loginsMap.put(CognitoSyncClientManager.developerIdentityProvider.getProviderName(), loginReponse.getToken());
// get AWS credentials to access DB
GetCredentialsForIdentityRequest credentialsForIdentityRequest = new GetCredentialsForIdentityRequest();
credentialsForIdentityRequest.setIdentityId(loginReponse.getIdentityId());
credentialsForIdentityRequest.setLogins(loginsMap);
Log.i(TAG, "credentials request: " + credentialsForIdentityRequest.getIdentityId() + credentialsForIdentityRequest.getLogins());
AmazonCognitoIdentityClient cognitoIdentityClient = new AmazonCognitoIdentityClient(CognitoSyncClientManager.credentialsProvider);
credentialsForIdentityResult = cognitoIdentityClient
.getCredentialsForIdentity(credentialsForIdentityRequest);
isSuccessful = credentialsForIdentityResult != null;
return null;
}
@Override
protected void onPostExecute(Void result) {
if (isSuccessful) {
Log.i(TAG, "accessKeyId: " + credentialsForIdentityResult.getCredentials().getAccessKeyId()
+ "\nsecretKey: " + credentialsForIdentityResult.getCredentials().getSecretKey()
+ "\nsessionToken: " + credentialsForIdentityResult.getCredentials().getSessionToken());
CognitoSyncClientManager
.addLogins(
((AuthenticationProvider) CognitoSyncClientManager.credentialsProvider
.getIdentityProvider()).getProviderName(),
mImei);
} else {
Log.i(TAG, "login error: " + result);
}
}
}
在我的刷新电话中，我只是在沉思。我不确定这是否正确。
现在最大的问题是在我尝试使用登录时启动，mSocializeClient.socializeAuthLoginPost(login)它似乎每次都会调用刷新，甚至在登录之前。刷新然后尝试再次登录并且它会不断地调用自己。< / p>
非常感谢任何帮助/解释。
答案 0 :(得分：1)
dev auth示例的工作方式如下：
在您的情况下，您没有此会话密钥，只有用户名和密码。所以你不需要AuthenticationTask。您所需要的只是：
您可以将代码简化为此流程吗？