Google Mirror API-এর অনুরোধগুলি OAuth 2.0 শংসাপত্র ব্যবহার করে অনুমোদিত হতে হবে। যখন আপনার অ্যাপ্লিকেশন ব্যবহারকারীর পক্ষ থেকে Google API অ্যাক্সেস করতে হবে যেমন ব্যবহারকারী অফলাইনে থাকে তখন আপনার সার্ভার-সাইড ফ্লো ব্যবহার করা উচিত। এই পদ্ধতির জন্য আপনার ক্লায়েন্ট থেকে আপনার সার্ভারে একটি এক-কালীন অনুমোদন কোড পাস করতে হবে যা আপনার সার্ভারের জন্য একটি অ্যাক্সেস এবং রিফ্রেশ টোকেন অর্জন করতে ব্যবহৃত হয়।
একটি ক্লায়েন্ট আইডি এবং ক্লায়েন্ট সিক্রেট তৈরি করুন
প্রথমে, আপনাকে আপনার অ্যাপের জন্য Google Mirror API সক্রিয় করতে হবে। আপনি Google APIs কনসোলে আপনার API প্রকল্পের জন্য এটি করতে পারেন।
- Google APIs কনসোলে একটি API প্রকল্প তৈরি করুন।
- আপনার API প্রকল্পে পরিষেবা ট্যাবটি নির্বাচন করুন এবং Google মিরর API সক্ষম করুন৷
- আপনার API প্রকল্পে API অ্যাক্সেস ট্যাবটি নির্বাচন করুন এবং একটি OAuth 2.0 ক্লায়েন্ট আইডি তৈরি করুন ক্লিক করুন।
- ব্র্যান্ডিং তথ্য বিভাগে, আপনার আবেদনের জন্য একটি নাম দিন (যেমন "আমার গ্লাস পরিষেবা"), এবং পরবর্তী ক্লিক করুন। একটি পণ্য লোগো প্রদান ঐচ্ছিক.
- ক্লায়েন্ট আইডি সেটিংস বিভাগে, নিম্নলিখিতগুলি করুন:
- অ্যাপ্লিকেশন প্রকারের জন্য ওয়েব অ্যাপ্লিকেশন নির্বাচন করুন।
- শিরোনাম, আপনার সাইট বা হোস্টনামের পাশের আরও বিকল্প লিঙ্কে ক্লিক করুন।
- অনুমোদিত পুনঃনির্দেশ ইউআরআই এবং জাভাস্ক্রিপ্ট উত্স ক্ষেত্রে আপনার হোস্টনাম তালিকাভুক্ত করুন৷
- ক্লায়েন্ট আইডি তৈরি করুন ক্লিক করুন।
- API অ্যাক্সেস পৃষ্ঠায়, ওয়েব অ্যাপ্লিকেশনগুলির জন্য ক্লায়েন্ট আইডি বিভাগটি সনাক্ত করুন এবং ক্লায়েন্ট আইডি এবং ক্লায়েন্ট সিক্রেট মানগুলি নোট করুন৷
অনুমোদনের অনুরোধগুলি পরিচালনা করা
যখন একজন ব্যবহারকারী প্রথমবার আপনার অ্যাপ্লিকেশন লোড করে, তখন অনুরোধকৃত অনুমতির সুযোগের সাথে তাদের Google Glass অ্যাকাউন্টে অ্যাক্সেস করার জন্য আপনার অ্যাপ্লিকেশনের অনুমতি দেওয়ার জন্য তাদের একটি ডায়ালগ উপস্থাপন করা হয়। এই প্রাথমিক অনুমোদনের পরে, আপনার অ্যাপের ক্লায়েন্ট আইডি পরিবর্তিত হলে বা অনুরোধকৃত স্কোপগুলি পরিবর্তিত হলে ব্যবহারকারীকে শুধুমাত্র অনুমতি ডায়ালগ দিয়ে উপস্থাপন করা হয়।
ব্যবহারকারীকে প্রমাণীকরণ করুন
এই প্রাথমিক সাইন-ইনটি একটি অনুমোদন ফলাফল বস্তু প্রদান করে যাতে একটি অনুমোদন কোড থাকে যদি সফল হয়।
একটি অ্যাক্সেস টোকেনের জন্য অনুমোদন কোড বিনিময় করুন
অনুমোদন কোড হল একটি এককালীন কোড যা আপনার সার্ভার একটি অ্যাক্সেস টোকেনের জন্য বিনিময় করতে পারে। এই অ্যাক্সেস টোকেনটি সীমিত সময়ের জন্য ব্যবহারকারীর ডেটাতে আপনার অ্যাপ্লিকেশন অ্যাক্সেস দেওয়ার জন্য Google Mirror API-এ পাস করা হয়েছে।
যদি আপনার অ্যাপ্লিকেশনটির offline অ্যাক্সেসের প্রয়োজন হয়, আপনার অ্যাপ প্রথমবার অনুমোদন কোড বিনিময় করে, এটি একটি রিফ্রেশ টোকেনও পায় যা এটি একটি পূর্ববর্তী টোকেনের মেয়াদ শেষ হওয়ার পরে একটি নতুন অ্যাক্সেস টোকেন পেতে ব্যবহার করে। আপনার অ্যাপ্লিকেশন পরবর্তী ব্যবহারের জন্য এই রিফ্রেশ টোকেন (সাধারণত আপনার সার্ভারে একটি ডাটাবেসে) সংরক্ষণ করে।
নিম্নলিখিত কোড নমুনাগুলি offline অ্যাক্সেস সহ একটি অ্যাক্সেস টোকেনের জন্য একটি অনুমোদন কোড বিনিময় এবং রিফ্রেশ টোকেন সংরক্ষণ করে।
জাভা
আপনার client_secrets.json ফাইলের অবস্থানের সাথে CLIENTSECRETS_LOCATION মান প্রতিস্থাপন করুন।
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeRequestUrl;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.auth.oauth2.GoogleTokenResponse;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.jackson.JacksonFactory;
import com.google.api.services.oauth2.Oauth2;
import com.google.api.services.oauth2.model.Userinfo;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
// ...
class MyClass {
// Path to client_secrets.json which should contain a JSON document such as:
// {
// "web": {
// "client_id": "[[YOUR_CLIENT_ID]]",
// "client_secret": "[[YOUR_CLIENT_SECRET]]",
// "auth_uri": "https://accounts.google.com/o/oauth2/auth",
// "token_uri": "https://accounts.google.com/o/oauth2/token"
// }
// }
private static final String CLIENTSECRETS_LOCATION = "client_secrets.json";
private static final String REDIRECT_URI = "<YOUR_REGISTERED_REDIRECT_URI>";
private static final List<String> SCOPES = Arrays.asList(
"https://www.googleapis.com/auth/glass.timeline",
"https://www.googleapis.com/auth/userinfo.profile");
private static GoogleAuthorizationCodeFlow flow = null;
/**
* Exception thrown when an error occurred while retrieving credentials.
*/
public static class GetCredentialsException extends Exception {
protected String authorizationUrl;
/**
* Construct a GetCredentialsException.
*
* @param authorizationUrl The authorization URL to redirect the user to.
*/
public GetCredentialsException(String authorizationUrl) {
this.authorizationUrl = authorizationUrl;
}
/**
* Set the authorization URL.
*/
public void setAuthorizationUrl(String authorizationUrl) {
this.authorizationUrl = authorizationUrl;
}
/**
* @return the authorizationUrl
*/
public String getAuthorizationUrl() {
return authorizationUrl;
}
}
/**
* Exception thrown when a code exchange has failed.
*/
public static class CodeExchangeException extends GetCredentialsException {
/**
* Construct a CodeExchangeException.
*
* @param authorizationUrl The authorization URL to redirect the user to.
*/
public CodeExchangeException(String authorizationUrl) {
super(authorizationUrl);
}
}
/**
* Exception thrown when no refresh token has been found.
*/
public static class NoRefreshTokenException extends GetCredentialsException {
/**
* Construct a NoRefreshTokenException.
*
* @param authorizationUrl The authorization URL to redirect the user to.
*/
public NoRefreshTokenException(String authorizationUrl) {
super(authorizationUrl);
}
}
/**
* Exception thrown when no user ID could be retrieved.
*/
private static class NoUserIdException extends Exception {
}
/**
* Retrieved stored credentials for the provided user ID.
*
* @param userId User's ID.
* @return Stored Credential if found, {@code null} otherwise.
*/
static Credential getStoredCredentials(String userId) {
// TODO: Implement this method to work with your database. Instantiate a new
// Credential instance with stored accessToken and refreshToken.
throw new UnsupportedOperationException();
}
/**
* Store OAuth 2.0 credentials in the application's database.
*
* @param userId User's ID.
* @param credentials The OAuth 2.0 credentials to store.
*/
static void storeCredentials(String userId, Credential credentials) {
// TODO: Implement this method to work with your database.
// Store the credentials.getAccessToken() and credentials.getRefreshToken()
// string values in your database.
throw new UnsupportedOperationException();
}
/**
* Build an authorization flow and store it as a static class attribute.
*
* @return GoogleAuthorizationCodeFlow instance.
* @throws IOException Unable to load client_secrets.json.
*/
static GoogleAuthorizationCodeFlow getFlow() throws IOException {
if (flow == null) {
HttpTransport httpTransport = new NetHttpTransport();
JacksonFactory jsonFactory = new JacksonFactory();
GoogleClientSecrets clientSecrets =
GoogleClientSecrets.load(jsonFactory,
MyClass.class.getResourceAsStream(CLIENTSECRETS_LOCATION));
flow =
new GoogleAuthorizationCodeFlow.Builder(httpTransport, jsonFactory, clientSecrets, SCOPES)
.setAccessType("offline").setApprovalPrompt("force").build();
}
return flow;
}
/**
* Exchange an authorization code for OAuth 2.0 credentials.
*
* @param authorizationCode Authorization code to exchange for OAuth 2.0
* credentials.
* @return OAuth 2.0 credentials.
* @throws CodeExchangeException An error occurred.
*/
static Credential exchangeCode(String authorizationCode)
throws CodeExchangeException {
try {
GoogleAuthorizationCodeFlow flow = getFlow();
GoogleTokenResponse response =
flow.newTokenRequest(authorizationCode).setRedirectUri(REDIRECT_URI).execute();
return flow.createAndStoreCredential(response, null);
} catch (IOException e) {
System.err.println("An error occurred: " + e);
throw new CodeExchangeException(null);
}
}
/**
* Send a request to the UserInfo API to retrieve the user's information.
*
* @param credentials OAuth 2.0 credentials to authorize the request.
* @return User's information.
* @throws NoUserIdException An error occurred.
*/
static Userinfo getUserInfo(Credential credentials)
throws NoUserIdException {
Oauth2 userInfoService =
new Oauth2.Builder(new NetHttpTransport(), new JacksonFactory(), credentials).build();
Userinfo userInfo = null;
try {
userInfo = userInfoService.userinfo().get().execute();
} catch (IOException e) {
System.err.println("An error occurred: " + e);
}
if (userInfo != null && userInfo.getId() != null) {
return userInfo;
} else {
throw new NoUserIdException();
}
}
/**
* Retrieve the authorization URL.
*
* @param userId User's Google ID.
* @param state State for the authorization URL.
* @return Authorization URL to redirect the user to.
* @throws IOException Unable to load client_secrets.json.
*/
public static String getAuthorizationUrl(String userId, String state) throws IOException {
GoogleAuthorizationCodeRequestUrl urlBuilder =
getFlow().newAuthorizationUrl().setRedirectUri(REDIRECT_URI).setState(state);
urlBuilder.set("user_id", userId);
return urlBuilder.build();
}
/**
* Retrieve credentials using the provided authorization code.
*
* This function exchanges the authorization code for an access token and
* queries the UserInfo API to retrieve the user's Google ID. If a
* refresh token has been retrieved along with an access token, it is stored
* in the application database using the user's Google ID as key. If no
* refresh token has been retrieved, the function checks in the application
* database for one and returns it if found or throws a NoRefreshTokenException
* with the authorization URL to redirect the user to.
*
* @param authorizationCode Authorization code to use to retrieve an access
* token.
* @param state State to set to the authorization URL in case of error.
* @return OAuth 2.0 credentials instance containing an access and refresh
* token.
* @throws NoRefreshTokenException No refresh token could be retrieved from
* the available sources.
* @throws IOException Unable to load client_secrets.json.
*/
public static Credential getCredentials(String authorizationCode, String state)
throws CodeExchangeException, NoRefreshTokenException, IOException {
String userId = "";
try {
Credential credentials = exchangeCode(authorizationCode);
Userinfo userInfo = getUserInfo(credentials);
userId = userInfo.getId();
if (credentials.getRefreshToken() != null) {
storeCredentials(userId, credentials);
return credentials;
} else {
credentials = getStoredCredentials(userId);
if (credentials != null && credentials.getRefreshToken() != null) {
return credentials;
}
}
} catch (CodeExchangeException e) {
e.printStackTrace();
// Glass services should try to retrieve the user and credentials for the current
// session.
// If none is available, redirect the user to the authorization URL.
e.setAuthorizationUrl(getAuthorizationUrl(userId, state));
throw e;
} catch (NoUserIdException e) {
e.printStackTrace();
}
// No refresh token has been retrieved.
String authorizationUrl = getAuthorizationUrl(userId, state);
throw new NoRefreshTokenException(authorizationUrl);
}
}
পাইথন
আপনার client_secrets.json ফাইলের অবস্থানের সাথে CLIENTSECRETS_LOCATION মান প্রতিস্থাপন করুন।
import logging
from oauth2client.client import flow_from_clientsecrets
from oauth2client.client import FlowExchangeError
from apiclient.discovery import build
# ...
# Path to client_secrets.json which should contain a JSON document such as:
# {
# "web": {
# "client_id": "[[YOUR_CLIENT_ID]]",
# "client_secret": "[[YOUR_CLIENT_SECRET]]",
# "redirect_uris": [],
# "auth_uri": "https://accounts.google.com/o/oauth2/auth",
# "token_uri": "https://accounts.google.com/o/oauth2/token"
# }
# }
CLIENTSECRETS_LOCATION = '<PATH/TO/CLIENT_SECRETS.JSON>'
REDIRECT_URI = '<YOUR_REGISTERED_REDIRECT_URI>'
SCOPES = [
'https://www.googleapis.com/auth/glass.timeline',
'https://www.googleapis.com/auth/userinfo.profile',
# Add other requested scopes.
]
class GetCredentialsException(Exception):
"""Error raised when an error occurred while retrieving credentials.
Attributes:
authorization_url: Authorization URL to redirect the user to in order to
request offline access.
"""
def __init__(self, authorization_url):
"""Construct a GetCredentialsException."""
self.authorization_url = authorization_url
class CodeExchangeException(GetCredentialsException):
"""Error raised when a code exchange has failed."""
class NoRefreshTokenException(GetCredentialsException):
"""Error raised when no refresh token has been found."""
class NoUserIdException(Exception):
"""Error raised when no user ID could be retrieved."""
def get_stored_credentials(user_id):
"""Retrieved stored credentials for the provided user ID.
Args:
user_id: User's ID.
Returns:
Stored oauth2client.client.OAuth2Credentials if found, None otherwise.
Raises:
NotImplemented: This function has not been implemented.
"""
# TODO: Implement this function to work with your database.
# To instantiate an OAuth2Credentials instance from a Json
# representation, use the oauth2client.client.Credentials.new_from_json
# class method.
raise NotImplementedError()
def store_credentials(user_id, credentials):
"""Store OAuth 2.0 credentials in the application's database.
This function stores the provided OAuth 2.0 credentials using the user ID as
key.
Args:
user_id: User's ID.
credentials: OAuth 2.0 credentials to store.
Raises:
NotImplemented: This function has not been implemented.
"""
# TODO: Implement this function to work with your database.
# To retrieve a Json representation of the credentials instance, call the
# credentials.to_json() method.
raise NotImplementedError()
def exchange_code(authorization_code):
"""Exchange an authorization code for OAuth 2.0 credentials.
Args:
authorization_code: Authorization code to exchange for OAuth 2.0
credentials.
Returns:
oauth2client.client.OAuth2Credentials instance.
Raises:
CodeExchangeException: an error occurred.
"""
flow = flow_from_clientsecrets(CLIENTSECRETS_LOCATION, ' '.join(SCOPES))
flow.redirect_uri = REDIRECT_URI
try:
credentials = flow.step2_exchange(authorization_code)
return credentials
except FlowExchangeError, error:
logging.error('An error occurred: %s', error)
raise CodeExchangeException(None)
def get_user_info(credentials):
"""Send a request to the UserInfo API to retrieve the user's information.
Args:
credentials: oauth2client.client.OAuth2Credentials instance to authorize the
request.
Returns:
User information as a dict.
"""
user_info_service = build(
serviceName='oauth2', version='v2',
http=credentials.authorize(httplib2.Http()))
user_info = None
try:
user_info = user_info_service.userinfo().get().execute()
except errors.HttpError, e:
logging.error('An error occurred: %s', e)
if user_info and user_info.get('id'):
return user_info
else:
raise NoUserIdException()
def get_authorization_url(user_id, state):
"""Retrieve the authorization URL.
Args:
user_id: User's Google ID.
state: State for the authorization URL.
Returns:
Authorization URL to redirect the user to.
"""
flow = flow_from_clientsecrets(CLIENTSECRETS_LOCATION, ' '.join(SCOPES))
flow.params['access_type'] = 'offline'
flow.params['approval_prompt'] = 'force'
flow.params['user_id'] = user_id
flow.params['state'] = state
return flow.step1_get_authorize_url(REDIRECT_URI)
def get_credentials(authorization_code, state):
"""Retrieve credentials using the provided authorization code.
This function exchanges the authorization code for an access token and queries
the UserInfo API to retrieve the user's Google ID.
If a refresh token has been retrieved along with an access token, it is stored
in the application database using the user's Google ID as key.
If no refresh token has been retrieved, the function checks in the application
database for one and returns it if found or raises a NoRefreshTokenException
with the authorization URL to redirect the user to.
Args:
authorization_code: Authorization code to use to retrieve an access token.
state: State to set to the authorization URL in case of error.
Returns:
oauth2client.client.OAuth2Credentials instance containing an access and
refresh token.
Raises:
CodeExchangeError: Could not exchange the authorization code.
NoRefreshTokenException: No refresh token could be retrieved from the
available sources.
"""
user_id = ''
try:
credentials = exchange_code(authorization_code)
user_info = get_user_info(credentials)
user_id = user_info.get('id')
if credentials.refresh_token is not None:
store_credentials(user_id, credentials)
return credentials
else:
credentials = get_stored_credentials(user_id)
if credentials and credentials.refresh_token is not None:
return credentials
except CodeExchangeException, error:
logging.error('An error occurred during code exchange.')
# Glass services should try to retrieve the user and credentials for the current
# session.
# If none is available, redirect the user to the authorization URL.
error.authorization_url = get_authorization_url(user_id, state)
raise error
except NoUserIdException:
logging.error('No user ID could be retrieved.')
# No refresh token has been retrieved.
authorization_url = get_authorization_url(user_id, state)
raise NoRefreshTokenException(authorization_url)
পিএইচপি
getCredentials ফাংশন প্রদত্ত অনুমোদন কোড থেকে শুরু করে OAuth 2.0 শংসাপত্র পুনরুদ্ধার করে। যদি কোনো রিফ্রেশ টোকেন পুনরুদ্ধার করা না যায়, তবে অফলাইন অ্যাক্সেসের অনুরোধ করার জন্য ব্যবহারকারীকে পুনঃনির্দেশ করার জন্য একটি অনুমোদন URL সহ একটি ব্যতিক্রম উত্থাপিত হয়।
<?php
require_once 'google-api-php-client/src/Google_Client.php';
require_once "google-api-php-client/src/contrib/Google_Oauth2Service.php";
session_start();
// ...
$CLIENT_ID = '<YOUR_CLIENT_ID>';
$CLIENT_SECRET = '<YOUR_CLIENT_SECRET>';
$REDIRECT_URI = '<YOUR_REGISTERED_REDIRECT_URI>';
$SCOPES = array(
'https://www.googleapis.com/auth/glass.timeline',
'https://www.googleapis.com/auth/userinfo.profile');
/**
* Exception thrown when an error occurred while retrieving credentials.
*/
class GetCredentialsException extends Exception {
protected $authorizationUrl;
/**
* Construct a GetCredentialsException.
*
* @param authorizationUrl The authorization URL to redirect the user to.
*/
public function __construct($authorizationUrl) {
$this->authorizationUrl = $authorizationUrl;
}
/**
* @return the authorizationUrl.
*/
public function getAuthorizationUrl() {
return $this->authorizationUrl;
}
/**
* Set the authorization URL.
*/
public function setAuthorizationurl($authorizationUrl) {
$this->authorizationUrl = $authorizationUrl;
}
}
/**
* Exception thrown when no refresh token has been found.
*/
class NoRefreshTokenException extends GetCredentialsException {}
/**
* Exception thrown when a code exchange has failed.
*/
class CodeExchangeException extends GetCredentialsException {}
/**
* Exception thrown when no user ID could be retrieved.
*/
class NoUserIdException extends Exception {}
/**
* Retrieved stored credentials for the provided user ID.
*
* @param String $userId User's ID.
* @return String Json representation of the OAuth 2.0 credentials.
*/
function getStoredCredentials($userId) {
// TODO: Implement this function to work with your database.
throw new RuntimeException('Not implemented!');
}
/**
* Store OAuth 2.0 credentials in the application's database.
*
* @param String $userId User's ID.
* @param String $credentials Json representation of the OAuth 2.0 credentials to
store.
*/
function storeCredentials($userId, $credentials) {
// TODO: Implement this function to work with your database.
throw new RuntimeException('Not implemented!');
}
/**
* Exchange an authorization code for OAuth 2.0 credentials.
*
* @param String $authorizationCode Authorization code to exchange for OAuth 2.0
* credentials.
* @return String Json representation of the OAuth 2.0 credentials.
* @throws CodeExchangeException An error occurred.
*/
function exchangeCode($authorizationCode) {
try {
global $CLIENT_ID, $CLIENT_SECRET, $REDIRECT_URI;
$client = new Google_Client();
$client->setClientId($CLIENT_ID);
$client->setClientSecret($CLIENT_SECRET);
$client->setRedirectUri($REDIRECT_URI);
$_GET['code'] = $authorizationCode;
return $client->authenticate();
} catch (Google_AuthException $e) {
print 'An error occurred: ' . $e->getMessage();
throw new CodeExchangeException(null);
}
}
/**
* Send a request to the UserInfo API to retrieve the user's information.
*
* @param String credentials OAuth 2.0 credentials to authorize the request.
* @return Userinfo User's information.
* @throws NoUserIdException An error occurred.
*/
function getUserInfo($credentials) {
$apiClient = new Google_Client();
$apiClient->setUseObjects(true);
$apiClient->setAccessToken($credentials);
$userInfoService = new Google_Oauth2Service($apiClient);
$userInfo = null;
try {
$userInfo = $userInfoService->userinfo->get();
} catch (Google_Exception $e) {
print 'An error occurred: ' . $e->getMessage();
}
if ($userInfo != null && $userInfo->getId() != null) {
return $userInfo;
} else {
throw new NoUserIdException();
}
}
/**
* Retrieve the authorization URL.
*
* @param String $userId User's Google ID.
* @param String $state State for the authorization URL.
* @return String Authorization URL to redirect the user to.
*/
function getAuthorizationUrl($userId, $state) {
global $CLIENT_ID, $REDIRECT_URI, $SCOPES;
$client = new Google_Client();
$client->setClientId($CLIENT_ID);
$client->setRedirectUri($REDIRECT_URI);
$client->setAccessType('offline');
$client->setApprovalPrompt('force');
$client->setState($state);
$client->setScopes($SCOPES);
$tmpUrl = parse_url($client->createAuthUrl());
$query = explode('&', $tmpUrl['query']);
$query[] = 'user_id=' . urlencode($userId);
return
$tmpUrl['scheme'] . '://' . $tmpUrl['host'] . $tmpUrl['port'] .
$tmpUrl['path'] . '?' . implode('&', $query);
}
/**
* Retrieve credentials using the provided authorization code.
*
* This function exchanges the authorization code for an access token and
* queries the UserInfo API to retrieve the user's Google ID. If a
* refresh token has been retrieved along with an access token, it is stored
* in the application database using the user's Google ID as key. If no
* refresh token has been retrieved, the function checks in the application
* database for one and returns it if found or throws a NoRefreshTokenException
* with the authorization URL to redirect the user to.
*
* @param String authorizationCode Authorization code to use to retrieve an access
* token.
* @param String state State to set to the authorization URL in case of error.
* @return String Json representation of the OAuth 2.0 credentials.
* @throws NoRefreshTokenException No refresh token could be retrieved from
* the available sources.
*/
function getCredentials($authorizationCode, $state) {
$userId = '';
try {
$credentials = exchangeCode($authorizationCode);
$userInfo = getUserInfo($credentials);
$userId = $userInfo->getId();
$credentialsArray = json_decode($credentials, true);
if (isset($credentialsArray['refresh_token'])) {
storeCredentials($userId, $credentials);
return $credentials;
} else {
$credentials = getStoredCredentials($userId);
$credentialsArray = json_decode($credentials, true);
if ($credentials != null &&
isset($credentialsArray['refresh_token'])) {
return $credentials;
}
}
} catch (CodeExchangeException $e) {
print 'An error occurred during code exchange.';
// Glass services should try to retrieve the user and credentials for the current
// session.
// If none is available, redirect the user to the authorization URL.
$e->setAuthorizationUrl(getAuthorizationUrl($userId, $state));
throw $e;
} catch (NoUserIdException $e) {
print 'No user ID could be retrieved.';
}
// No refresh token has been retrieved.
$authorizationUrl = getAuthorizationUrl($userId, $state);
throw new NoRefreshTokenException($authorizationUrl);
}
?>
.নেট
GetCredentials ফাংশন প্রদত্ত অনুমোদন কোড থেকে শুরু করে OAuth 2.0 শংসাপত্র পুনরুদ্ধার করে। যদি কোনো রিফ্রেশ টোকেন পুনরুদ্ধার করা না যায়, তবে অফলাইন অ্যাক্সেসের অনুরোধ করার জন্য ব্যবহারকারীকে পুনঃনির্দেশ করার জন্য একটি অনুমোদন URL সহ একটি ব্যতিক্রম উত্থাপিত হয়।
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth2;
using Google;
using Google.Apis.Authentication;
using Google.Apis.Authentication.OAuth2;
using Google.Apis.Authentication.OAuth2.DotNetOpenAuth;
using Google.Apis.Oauth2.v2;
using Google.Apis.Oauth2.v2.Data;
using Google.Apis.Services;
using System;
using System.Collections.Specialized;
using System.Web;
// ...
class MyClass {
static String CLIENT_ID = "<YOUR_CLIENT_ID>";
static String CLIENT_SECRET = "<YOUR_CLIENT_SECRET>";
static String REDIRECT_URI = "<YOUR_REGISTERED_REDIRECT_URI>";
static String[] SCOPES = new String[] {
"https://www.googleapis.com/auth/glass.timeline",
"https://www.googleapis.com/auth/userinfo.profile"
};
/// <summary>
/// Exception thrown when an error occurred while retrieving credentials.
/// </summary>
public class GetCredentialsException : Exception {
public String AuthorizationUrl { get; set; }
/// <summary>
/// Construct a GetCredentialsException.
/// </summary>
/// @param authorizationUrl The authorization URL to redirect the user to.
public GetCredentialsException(String authorizationUrl) {
this.AuthorizationUrl = authorizationUrl;
}
}
/// <summary>
/// Exception thrown when no refresh token has been found.
/// </summary>
public class NoRefreshTokenException : GetCredentialsException {
/// <summary>
/// Construct a NoRefreshTokenException.
/// </summary>
/// @param authorizationUrl The authorization URL to redirect the user to.
public NoRefreshTokenException(String authorizationUrl) : base(authorizationUrl) {
}
}
/// <summary>
/// Exception thrown when a code exchange has failed.
/// </summary>
private class CodeExchangeException : GetCredentialsException {
/// <summary>
/// Construct a CodeExchangeException.
/// </summary>
/// @param authorizationUrl The authorization URL to redirect the user to.
public CodeExchangeException(String authorizationUrl) : base(authorizationUrl) {
}
}
/// <summary>
/// Exception thrown when no user ID could be retrieved.
/// </summary>
private class NoUserIdException : Exception {
}
/// <summary>
/// Extends the NativeApplicationClient class to allow setting of a custom IAuthorizationState.
/// </summary>
public class StoredStateClient : NativeApplicationClient {
/// <summary>
/// Initializes a new instance of the <see cref="StoredStateClient"/> class.
/// </summary>
/// <param name="authorizationServer">The token issuer.</param>
/// <param name="clientIdentifier">The client identifier.</param>
/// <param name="clientSecret">The client secret.</param>
public StoredStateClient(AuthorizationServerDescription authorizationServer,
String clientIdentifier,
String clientSecret,
IAuthorizationState state)
: base(authorizationServer, clientIdentifier, clientSecret) {
this.State = state;
}
public IAuthorizationState State { get; private set; }
/// <summary>
/// Returns the IAuthorizationState stored in the StoredStateClient instance.
/// </summary>
/// <param name="provider">OAuth2 client.</param>
/// <returns>The stored authorization state.</returns>
static public IAuthorizationState GetState(StoredStateClient provider) {
return provider.State;
}
}
/// <summary>
/// Retrieve an IAuthenticator instance using the provided state.
/// </summary>
/// <param name="credentials">OAuth 2.0 credentials to use.</param>
/// <returns>Authenticator using the provided OAuth 2.0 credentials</returns>
public static IAuthenticator GetAuthenticatorFromState(IAuthorizationState credentials) {
var provider = new StoredStateClient(GoogleAuthenticationServer.Description, CLIENT_ID, CLIENT_SECRET, credentials);
var auth = new OAuth2Authenticator<StoredStateClient>(provider, StoredStateClient.GetState);
auth.LoadAccessToken();
return auth;
}
/// <summary>
/// Retrieved stored credentials for the provided user ID.
/// </summary>
/// <param name="userId">User's ID.</param>
/// <returns>Stored GoogleAccessProtectedResource if found, null otherwise.</returns>
static IAuthorizationState GetStoredCredentials(String userId) {
// TODO: Implement this method to work with your database.
throw new NotImplementedException();
}
/// <summary>
/// Store OAuth 2.0 credentials in the application's database.
/// </summary>
/// <param name="userId">User's ID.</param>
/// <param name="credentials">The OAuth 2.0 credentials to store.</param>
static void StoreCredentials(String userId, IAuthorizationState credentials) {
// TODO: Implement this method to work with your database.
throw new NotImplementedException();
}
/// <summary>
/// Exchange an authorization code for OAuth 2.0 credentials.
/// </summary>
/// <param name="authorizationCode">Authorization code to exchange for OAuth 2.0 credentials.</param>
/// <returns>OAuth 2.0 credentials.</returns>
/// <exception cref="CodeExchangeException">An error occurred.</exception>
static IAuthorizationState ExchangeCode(String authorizationCode) {
var provider = new NativeApplicationClient(GoogleAuthenticationServer.Description, CLIENT_ID, CLIENT_SECRET);
IAuthorizationState state = new AuthorizationState();
state.Callback = new Uri(REDIRECT_URI);
try {
state = provider.ProcessUserAuthorization(authorizationCode, state);
return state;
} catch (ProtocolException) {
throw new CodeExchangeException(null);
}
}
/// <summary>
/// Send a request to the UserInfo API to retrieve the user's information.
/// </summary>
/// <param name="credentials">OAuth 2.0 credentials to authorize the request.</param>
/// <returns>User's information.</returns>
/// <exception cref="NoUserIdException">An error occurred.</exception>
static Userinfo GetUserInfo(IAuthorizationState credentials) {
Oauth2Service userInfoService = new Oauth2Service(new BaseClientService.Initializer()
{
Authenticator = GetAuthenticatorFromState(credentials)
});
Userinfo userInfo = null;
try {
userInfo = userInfoService.Userinfo.Get().Fetch();
} catch (GoogleApiRequestException e) {
Console.WriteLine("An error occurred: " + e.Message);
}
if (userInfo != null && !String.IsNullOrEmpty(userInfo.Id)) {
return userInfo;
} else {
throw new NoUserIdException();
}
}
/// <summary>
/// Retrieve the authorization URL.
/// </summary>
/// <param name="userId">User's Google ID.</param>
/// <param name="state">State for the authorization URL.</param>
/// <returns>Authorization URL to redirect the user to.</returns>
public static String GetAuthorizationUrl(String userId, String state) {
var provider = new NativeApplicationClient(GoogleAuthenticationServer.Description);
provider.ClientIdentifier = CLIENT_ID;
IAuthorizationState authorizationState = new AuthorizationState(SCOPES);
authorizationState.Callback = new Uri(REDIRECT_URI);
UriBuilder builder = new UriBuilder(provider.RequestUserAuthorization(authorizationState));
NameValueCollection queryParameters = HttpUtility.ParseQueryString(builder.Query);
queryParameters.Set("access_type", "offline");
queryParameters.Set("approval_prompt", "force");
queryParameters.Set("user_id", userId);
queryParameters.Set("state", state);
builder.Query = queryParameters.ToString();
return builder.Uri.ToString();
}
/// <summary>
/// Retrieve credentials using the provided authorization code.
///
/// This function exchanges the authorization code for an access token and
/// queries the UserInfo API to retrieve the user's Google ID. If a
/// refresh token has been retrieved along with an access token, it is stored
/// in the application database using the user's Google ID as key. If no
/// refresh token has been retrieved, the function checks in the application
/// database for one and returns it if found or throws a NoRefreshTokenException
/// with the authorization URL to redirect the user to.
/// </summary>
/// <param name="authorizationCode">Authorization code to use to retrieve an access token.</param>
/// <param name="state">State to set to the authorization URL in case of error.</param>
/// <returns>OAuth 2.0 credentials instance containing an access and refresh token.</returns>
/// <exception cref="CodeExchangeException">
/// An error occurred while exchanging the authorization code.
/// </exception>
/// <exception cref="NoRefreshTokenException">
/// No refresh token could be retrieved from the available sources.
/// </exception>
public static IAuthenticator GetCredentials(String authorizationCode, String state) {
String userId = "";
try {
IAuthorizationState credentials = ExchangeCode(authorizationCode);
Userinfo userInfo = GetUserInfo(credentials);
userId = userInfo.Id;
if (!String.IsNullOrEmpty(credentials.RefreshToken)) {
StoreCredentials(userId, credentials);
return GetAuthenticatorFromState(credentials);
} else {
credentials = GetStoredCredentials(userId);
if (credentials != null && !String.IsNullOrEmpty(credentials.RefreshToken)) {
return GetAuthenticatorFromState(credentials);
}
}
} catch (CodeExchangeException e) {
Console.WriteLine("An error occurred during code exchange.");
// Glass services should try to retrieve the user and credentials for the current
// session.
// If none is available, redirect the user to the authorization URL.
e.AuthorizationUrl = GetAuthorizationUrl(userId, state);
throw e;
} catch (NoUserIdException) {
Console.WriteLine("No user ID could be retrieved.");
}
// No refresh token has been retrieved.
String authorizationUrl = GetAuthorizationUrl(userId, state);
throw new NoRefreshTokenException(authorizationUrl);
}
}
রুবি
get_credentials ফাংশন প্রদত্ত অনুমোদন কোড থেকে শুরু করে OAuth 2.0 শংসাপত্র পুনরুদ্ধার করে। যদি কোনো রিফ্রেশ টোকেন পুনরুদ্ধার করা না যায়, তবে অফলাইন অ্যাক্সেসের অনুরোধ করার জন্য ব্যবহারকারীকে পুনঃনির্দেশ করার জন্য একটি অনুমোদন URL সহ একটি ব্যতিক্রম উত্থাপিত হয়।
require 'google/api_client'
CLIENT_ID = '<YOUR_CLIENT_ID>'
CLIENT_SECRET = '<YOUR_CLIENT_SECRET>'
REDIRECT_URI = '<YOUR_REGISTERED_REDIRECT_URI>'
SCOPES = [
'https://www.googleapis.com/auth/glass.timeline',
'https://www.googleapis.com/auth/userinfo.profile',
# Add other requested scopes.
]
##
# Error raised when an error occurred while retrieving credentials.
class GetCredentialsError < StandardError
##
# Initialize a NoRefreshTokenError instance.
#
# @param [String] authorize_url
# Authorization URL to redirect the user to in order to in order to request
# offline access.
def initialize(authorization_url)
@authorization_url = authorization_url
end
def authorization_url=(authorization_url)
@authorization_url = authorization_url
end
def authorization_url
return @authorization_url
end
end
##
# Error raised when a code exchange has failed.
class CodeExchangeError < GetCredentialsError
end
##
# Error raised when no refresh token has been found.
class NoRefreshTokenError < GetCredentialsError
end
##
# Error raised when no user ID could be retrieved.
class NoUserIdError < StandardError
end
##
# Retrieved stored credentials for the provided user ID.
#
# @param [String] user_id
# User's ID.
# @return [Signet::OAuth2::Client]
# Stored OAuth 2.0 credentials if found, nil otherwise.
def get_stored_credentials(user_id)
raise NotImplementedError, 'get_stored_credentials is not implemented.'
end
##
# Store OAuth 2.0 credentials in the application's database.
#
# @param [String] user_id
# User's ID.
# @param [Signet::OAuth2::Client] credentials
# OAuth 2.0 credentials to store.
def store_credentials(user_id, credentials)
raise NotImplementedError, 'store_credentials is not implemented.'
end
##
# Exchange an authorization code for OAuth 2.0 credentials.
#
# @param [String] auth_code
# Authorization code to exchange for OAuth 2.0 credentials.
# @return [Signet::OAuth2::Client]
# OAuth 2.0 credentials.
def exchange_code(authorization_code)
client = Google::APIClient.new
client.authorization.client_id = CLIENT_ID
client.authorization.client_secret = CLIENT_SECRET
client.authorization.code = authorization_code
client.authorization.redirect_uri = REDIRECT_URI
begin
client.authorization.fetch_access_token!
return client.authorization
rescue Signet::AuthorizationError
raise CodeExchangeError.new(nil)
end
end
##
# Send a request to the UserInfo API to retrieve the user's information.
#
# @param [Signet::OAuth2::Client] credentials
# OAuth 2.0 credentials to authorize the request.
# @return [Google::APIClient::Schema::Oauth2::V2::Userinfo]
# User's information.
def get_user_info(credentials)
client = Google::APIClient.new
client.authorization = credentials
oauth2 = client.discovered_api('oauth2', 'v2')
result = client.execute!(:api_method => oauth2.userinfo.get)
user_info = nil
if result.status == 200
user_info = result.data
else
puts "An error occurred: #{result.data['error']['message']}"
end
if user_info != nil && user_info.id != nil
return user_info
end
raise NoUserIdError, "Unable to retrieve the user's Google ID."
end
##
# Retrieve authorization URL.
#
# @param [String] user_id
# User's Google ID.
# @param [String] state
# State for the authorization URL.
# @return [String]
# Authorization URL to redirect the user to.
def get_authorization_url(user_id, state)
client = Google::APIClient.new
client.authorization.client_id = CLIENT_ID
client.authorization.redirect_uri = REDIRECT_URI
client.authorization.scope = SCOPES
return client.authorization.authorization_uri(
:options => {
:approval_prompt => :force,
:access_type => :offline,
:user_id => user_id,
:state => state
}).to_s
end
##
# Retrieve credentials using the provided authorization code.
#
# This function exchanges the authorization code for an access token and queries
# the UserInfo API to retrieve the user's Google ID.
# If a refresh token has been retrieved along with an access token, it is stored
# in the application database using the user's Google ID as key.
# If no refresh token has been retrieved, the function checks in the application
# database for one and returns it if found or raises a NoRefreshTokenError
# with an authorization URL to redirect the user to.
#
# @param [String] auth_code
# Authorization code to use to retrieve an access token.
# @param [String] state
# State to set to the authorization URL in case of error.
# @return [Signet::OAuth2::Client]
# OAuth 2.0 credentials containing an access and refresh token.
def get_credentials(authorization_code, state)
user_id = ''
begin
credentials = exchange_code(authorization_code)
user_info = get_user_info(credentials)
user_id = user_info.id
if credentials.refresh_token != nil
store_credentials(user_id, credentials)
return credentials
else
credentials = get_stored_credentials(user_id)
if credentials != nil && credentials.refresh_token != nil
return credentials
end
end
rescue CodeExchangeError => error
print 'An error occurred during code exchange.'
# Glass services should try to retrieve the user and credentials for the current
# session.
# If none is available, redirect the user to the authorization URL.
error.authorization_url = get_authorization_url(user_id, state)
raise error
rescue NoUserIdError
print 'No user ID could be retrieved.'
end
authorization_url = get_authorization_url(user_id, state)
raise NoRefreshTokenError.new(authorization_url)
end
সঞ্চিত শংসাপত্র সহ অনুমোদন
যখন ব্যবহারকারীরা একটি সফল প্রথম-বারের অনুমোদন প্রবাহের পরে আপনার অ্যাপটি দেখেন, তখন আপনার অ্যাপ্লিকেশন শেষ ব্যবহারকারীকে অনুরোধ না করে অনুরোধগুলি অনুমোদন করতে একটি সঞ্চিত রিফ্রেশ টোকেন ব্যবহার করতে পারে।
আপনি যদি ইতিমধ্যেই ব্যবহারকারীকে প্রমাণীকরণ করে থাকেন, আপনার অ্যাপ্লিকেশন তার ডাটাবেস থেকে রিফ্রেশ টোকেনটি পুনরুদ্ধার করতে পারে এবং সার্ভার-সাইড সেশনে টোকেন সংরক্ষণ করতে পারে। যদি রিফ্রেশ টোকেন প্রত্যাহার করা হয় বা অন্যথায় অবৈধ হয়, তাহলে আপনাকে এটি ধরতে হবে এবং যথাযথ ব্যবস্থা নিতে হবে।
OAuth 2.0 শংসাপত্র ব্যবহার করা
পূর্ববর্তী বিভাগে দেখানো হিসাবে OAuth 2.0 শংসাপত্রগুলি পুনরুদ্ধার করা হলে, সেগুলিকে Google মিরর API পরিষেবা অবজেক্ট অনুমোদন করতে এবং API-তে অনুরোধ পাঠাতে ব্যবহার করা যেতে পারে।
নিম্নলিখিত কোড স্নিপেটগুলি দেখায় কিভাবে একটি Google মিরর API পরিষেবা বস্তুকে তাত্ক্ষণিক এবং অনুমোদন করতে হয় এবং একটি timeline item মেটাডেটা পুনরুদ্ধার করার জন্য Google মিরর API-কে একটি অনুরোধ পাঠায়৷
একটি পরিষেবা অবজেক্ট ইনস্ট্যান্টিয়েট করুন
এই কোড নমুনা দেখায় কিভাবে একটি পরিষেবা অবজেক্ট ইনস্ট্যান্ট করা যায় এবং তারপর API অনুরোধ করার জন্য এটি অনুমোদন করা যায়।
জাভা
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.jackson.JacksonFactory;
import com.google.api.services.mirror.Mirror;
// ...
public class MyClass {
// ...
/**
* Build a Mirror service object.
*
* @param credentials OAuth 2.0 credentials.
* @return Mirror service object.
*/
static Mirror buildService(GoogleCredential credentials) {
HttpTransport httpTransport = new NetHttpTransport();
JacksonFactory jsonFactory = new JacksonFactory();
return new Mirror.Builder(httpTransport, jsonFactory, credentials)
.build();
}
// ...
}
পাইথন
from apiclient.discovery import build
# ...
def build_service(credentials):
"""Build a Mirror service object.
Args:
credentials: OAuth 2.0 credentials.
Returns:
Mirror service object.
"""
http = httplib2.Http()
http = credentials.authorize(http)
return build('mirror', 'v1', http=http)
পিএইচপি
<?php
session_start();
require_once "google-api-php-client/src/Google_Client.php";
require_once "google-api-php-client/src/contrib/Google_MirrorService.php";
// ...
/**
* Build a Mirror service object.
*
* @param String credentials Json representation of the OAuth 2.0 credentials.
* @return Google_MirrorService service object.
*/
function buildService($credentials) {
$apiClient = new Google_Client();
$apiClient->setUseObjects(true);
$apiClient->setAccessToken($credentials);
return new Google_MirrorService($apiClient);
}
// ...
?>
.নেট
using Google.Apis.Authentication;
using Google.Apis.Mirror.v1;
using Google.Apis.Services;
// ...
public class MyClass {
// ...
/// <summary>
/// Build a Mirror service object.
/// </summary>
/// <param name="credentials">OAuth 2.0 credentials.</param>
/// <returns>Mirror service object.</returns>
static MirrorService BuildService(IAuthenticator credentials) {
return new MirrorService(new BaseClientService.Initializer()
{
Authenticator = credentials
});
}
}
রুবি
require 'google/api_client'
##
# Build a Mirror client instance.
#
# @param [Signet::OAuth2::Client] credentials
# OAuth 2.0 credentials.
# @return [Google::APIClient]
# Client instance
def build_client(credentials)
client = Google::APIClient.new
client.authorization = credentials
client = client.discovered_api('mirror', 'v1')
client
end
অনুমোদিত অনুরোধ পাঠান এবং প্রত্যাহার করা শংসাপত্রগুলি পরীক্ষা করুন৷
নিম্নলিখিত কোড স্নিপেটটি একটি অনুমোদিত Google মিরর API পরিষেবার উদাহরণ ব্যবহার করে এবং একটি timeline item মেটাডেটা পুনরুদ্ধার করার জন্য Google মিরর API-কে একটি অনুমোদিত GET অনুরোধ পাঠায়৷
যদি একটি ত্রুটি ঘটে, কোডটি একটি HTTP 401 স্ট্যাটাস কোডের জন্য পরীক্ষা করে, যা ব্যবহারকারীকে অনুমোদন URL-এ পুনঃনির্দেশ করে পরিচালনা করা উচিত।
আরও Google Mirror API অপারেশনগুলি API রেফারেন্সে নথিভুক্ত করা হয়েছে।
জাভা
import com.google.api.client.http.HttpResponse;
import com.google.api.client.http.HttpResponseException;
import com.google.api.services.mirror.Mirror;
import com.google.api.services.mirror.model.TimelineItem;
import java.io.IOException;
// ...
public class MyClass {
// ...
/**
* Print a timeline item's metadata.
*
* @param service Mirror service instance.
* @param itemId ID of the timeline item to print metadata for.
*/
static void printTimelineItem(Mirror service, String itemId) {
try {
TimelineItem item = service.timeline().get(itemId).execute();
System.out.println("Text: " + item.getText());
System.out.println("HTML: " + item.getHtml());
} catch (HttpResponseException e) {
if (e.getStatusCode() == 401) {
// Credentials have been revoked.
// TODO: Redirect the user to the authorization URL and/or
// remove the credentials from the database.
throw new UnsupportedOperationException();
}
} catch (IOException e) {
System.out.println("An error occurred: " + e);
}
}
// ...
}
পাইথন
from apiclient import errors
# ...
def print_timeline_item(service, item_id):
"""Print a timeline item's metadata.
Args:
service: Mirror service instance.
item_id: ID of the timeline item to print metadata for.
"""
try:
item = service.timeline().get(id=item_id).execute()
print 'Text: %s' % item['text']
print 'HTML: %s' % item['html']
except errors.HttpError, error:
if error.resp.status == 401:
# Credentials have been revoked.
# TODO: Redirect the user to the authorization URL and/or remove
# the credentials from the database.
raise NotImplementedError()
পিএইচপি
/**
* Print a timeline item's metadata.
*
* @param Google_MirrorService $service Mirror service instance.
* @param string $itemId ID of the timeline item to print metadata for.
*/
function printTimelineItem($service, $itemId) {
try {
$item = $service->timeline->get($itemId);
print "Text: " . $item->getText() . "\n";
print "HTML: " . $item->getHtml() . "\n";
} catch (apiAuthException) {
// Credentials have been revoked.
// TODO: Redirect the user to the authorization URL and/or remove
// the credentials from the database.
throw new RuntimeException('Not implemented!');
} catch (apiException $e) {
print "An error occurred: " . $e->getMessage();
}
}
.নেট
using Google;
using Google.Apis.Mirror.v1;
using Google.Apis.Mirror.v1.Data;
using System;
using System.Net;
// ...
public class MyClass {
// ...
/// <summary>
/// Print a timeline item's metadata.
/// </summary>
/// <param name="service">Mirror service instance.</param>
/// <param name="itemId">ID of the timeline item to print metadata for.</param>
private static void printTimelineItem(MirrorService service, String itemId) {
try {
TimelineItem item = service.Timeline.Get(itemId).Fetch();
Console.WriteLine("Text: " + item.Text);
Console.WriteLine("HTML: " + item.Html);
} catch (GoogleApiRequestException e) {
if (e.HttpStatusCode == HttpStatusCode.Unauthorized) {
// Credentials have been revoked.
// TODO: Redirect the user to the authorization URL and/or remove the
// credentials from the database.
throw new NotImplementedException();
}
}
}
//...
}
রুবি
require 'google/api_client'
##
# Print a timeline item's metadata.
#
# @param [Google::APIClient] client
# Authorized client instance
# @param [String] item_id
# ID of timeline item to print
# @return nil
def print_timeline_item(client, item_id)
mirror = client.discovered_api('mirror', 'v1')
result = client.execute(
:api_method => mirror.timeline.get,
:parameters => { 'id' => item_id })
if result.success?
item = result.data
puts "Text: #{item.text}"
puts "Html: #{item.html}"
elseif result.status == 401
# Credentials have been revoked.
# TODO: Redirect the user to the authorization URL and/or remove
# the credentials from the database.
raise NotImplementedError, 'Redirect the user.'
end
else
puts "An error occurred: #{result.data['error']['message']}"
end
end