Node.js的API在Heroku
在本地,但不工作的一些疯狂的原因,当我跟邮递员测试,但是当我上传到我的Heroku收到以下错误我的本地节点服务器工作:Node.js的API在Heroku
at=error code=H12 desc="Request timeout" method=POST path="/api/messages" host=test.herokuapp.com request_id=big_number_here fwd="my_ip_address" dyno=web.1 connect=0ms service=30000ms status=503 bytes=0 protocol=https
它只是似乎超时。我测试了另一条路线,只是一条正常的前端路线,并且它正确加载。我的代码如下:
app.js
var routesApi = require('./app_api/routes/index');
app.use('/api', routesApi);
app_api /路线
var express = require('express');
var router = express.Router();
var ctrlMessages = require('../controllers/messages');
// Messages
router.post('/messages', ctrlMessages.messagesCreate);
module.exports = router;
编辑
messages.js(添加控制器代码)
var mongoose = require('mongoose');
var Msg = mongoose.model('Messages');
// mongoose.set('debug', true); // TESTING
var sendJsonResponse = function(res, status, content) {
res.status(status);
res.json(content);
};
/* POST a new location */
/* /api/messages */
module.exports.messagesCreate = function(req, res) {
Msg.create({
msg1: req.body.msg1,
msg2: req.body.msg2
}, function(err, msg) {
if (err) {
console.log(err);
sendJsonResponse(res, 400, err);
} else {
console.log(err);
sendJsonResponse(res, 201, msg);
}
});
};
模型messages.js
var mongoose = require('mongoose');
var msgdata = new mongoose.Schema({
msg1: {
type: String,
required: true,
},
msg2: {
type: String,
required: true
},
createdOn: {
type: Date,
"default": Date.now
}
});
mongoose.model('Messages', msgdata);
DB连接器db.js
var mongoose = require('mongoose');
var gracefulShutdown;
var dbURI = 'mongodb://locationToMyMongoDB';
if (process.env.NODE_ENV === 'production') {
dbURI = process.env.MONGOLAB_URI;
}
mongoose.connect(dbURI);
// Emulate SIGINT signal for Windows
var readLine = require('readline');
if (process.platform === "win32") {
var rl = readLine.createInterface ({
input: process.stdin,
output: process.stdout
});
rl.on ('SIGINT', function() {
process.emit ("SIGINT");
});
}
mongoose.connection.on('connected', function() {
console.log('Mongoose connected to ' + dbURI);
});
mongoose.connection.on('error', function(err) {
console.log('mongoose connection error: ' + err);
});
mongoose.connection.on('disconnected', function() {
console.log('Mongoose disconnected');
});
gracefulShutdown = function(msg, callback) {
mongoose.connection.close(function() {
console.log('Mongoose disconnected through ' + msg);
callback();
});
};
// For nodemon restarts
process.once('SIGUSR2', function() {
gracefulShutdown('nodemon restart', function() {
process.kill(process.pid, 'SIGUSR2');
});
});
// For app termination
process.on('SIGINT', function() {
gracefulShutdown('app termination', function() {
process.exit(0);
});
});
// For Heroku app termination
process.on('SIGTERM', function() {
gracefulShutdown('Heroku app shutdown', function() {
process.exit(0);
});
});
// BRING IN SCHEMAS & MODELS
require('./messages');
因此,这是一种有趣的,但是这样一个简单的解决方案:
从db.js
...
var dbURI = 'mongodb://locationToMyMongoDB';
if (process.env.NODE_ENV === 'production') {
dbURI = process.env.MONGOLAB_URI;
}
...
我使用的是硬编码dbURI
变量,而不是摘录其列为环境变量,因此我的代码正在检查是否存在process.env.MONGOLAB_URI
,但它没有。
我只是评论说,线和完美的工作!
生产/ Heroku版本的API有很多消息吗?
H12
错误代码意味着请求超时(请参阅https://devcenter.heroku.com/articles/error-codes#h12-request-timeout),因为Heroku强制执行最大限制为30秒。
尝试分页您的端点,或返回更少的数据。
嘿,谢谢你的回答。实际上并没有太多的数据被传递,就像几句话一样。如果有帮助,我已经用我的控制器代码更新了OP。 – Kenny
你可以发布'ctrlMessages'的源代码吗? –
嘿,我在底部添加了控制器代码。 – Kenny
您是否试过在某些日志消息中粘贴以查看是否有任何代码正在执行? – toddg