我正在尝试使用node-openid(通过passport-google)使用他们的 Google 凭据对我的用户进行身份验证。它在我的开发机器上运行良好,但是当我使用 2 个 dyno 将其部署到 Heroku 时,它会在一个 dyno 处理整个 OpenID 对话时工作,而当对话在一个 dyno 上开始并在第二个 dyno 上完成时它会失败。在这种情况下,我收到以下错误:
2013-01-15T15:18:24+00:00 app[web.2]: Failed to verify assertion (message: Invalid association handle)
2013-01-15T15:18:24+00:00 app[web.2]: at Strategy.authenticate.identifier (/app/node_modules/passport-google/node_modules/passport-openid/lib/passport-openid/strategy.js:143:36)
...
处理这个问题的正确方法是什么?我是否应该以某种方式将对话状态保存在数据库中,以便两个测功机都可以访问它?
更新:
这是我用来通过将关联存储在 MongoDB 中来解决问题的代码。
var
GoogleStrategy = require('passport-google').Strategy;
// We have to save the OpenID state in the database so it's available to both
// dynos.
db.collection('OpenID').ensureIndex({expires: 1}, {expireAfterSeconds: 0},
function(err, result) {
if (err) {
throw new Error('Error setting TTL index on OpenID collection.');
}
});
// Use the GoogleStrategy within Passport.
// Strategies in passport require a `validate` function, which accept
// credentials (in this case, an OpenID identifier and profile), and invoke a
// callback with a user object.
strategy = new GoogleStrategy({
returnURL: 'http://localhost:3000/auth/google/return',
realm: 'http://localhost:3000/'
},
function(identifier, profile, done) {
// asynchronous verification, for effect...
process.nextTick(function () {
// To keep the example simple, the user's Google profile is returned to
// represent the logged-in user. In a typical application, you would want
// to associate the Google account with a user record in your database,
// and return that user instead.
profile.identifier = identifier;
return done(null, profile);
});
}
);
strategy.saveAssociation(function(handle, provider, algorithm, secret, expiresIn, done) {
db.collection("OpenID").insert({
handle: handle,
provider: provider,
algorithm: algorithm,
secret: secret,
expires: new Date(Date.now() + 1000 * expiresIn)
}, done);
});
strategy.loadAssociation(function(handle, done) {
db.collection("OpenID").findOne({handle: handle}, function (error, result) {
if (error)
return done(error);
else
return done(null, result.provider, result.algorithm, result.secret);
});
});