I am trying to capture query string parameters for analytics purpose using javascript. I did some searching and found that BMP can be used to do it but i am unable to find ample examples to implement. Could anyone point me in the right direction.
EDIT 1:
I used below code using browsermob-proxy to get har file but i get ERROR: browsermob-proxy returned error when i run it . I use selenium with it.
getHarFile() {
const proxy = browsermb.Proxy;
const pr = new proxy({host:"0.0.0.0",port:4444});
pr.doHAR("http://www.cnn.com/", (err,data) => {
if (err) {
logger.debug('ERROR: ' + err);
} else {
fs.writeFileSync('ua.com.har', data, 'utf8');
logger.debug("#HAR CREATED#");
}
})
}
So since I´m not quite sure of your scope I will throw you some ideas:
1. Fixing browsermob-proxy
You should change the host and proxy of the browsermob-proxy. Change the host to 127.0.0.1 and the port with any random number (4444 its ok). Then, make sure your browser run in that host and proxy by changing the browser settings.
2. Using plain javascript
2.1 Get current page query string
You can get the query string using location.search. If you are using some BDD framework with selenium, it is possible to execute javascript code and retrieve the result. You should always add a return to your code in order to recieve the response in your BDD test.
2.2 Using Performance API
You can access to all the network information within performance api. If you need to get the current page url you can use the following code:
performance.getEntriesByType("navigation")
This will return all the current navigation events and information.
If you want to get some information of the calls that the page made you can access it using:
performance.getEntriesByType("resource")
This will return all the calls made by your site. You have to loop over it searching the resource you want to find.
In all the ways, there is no way to get the value and key of query string as in the network tab. You have to separate it manually with a function, you can use the code provided here to get the value of a key.
My suggestion is to create your personal extension for Google Chrome, and developing an extension you can access few more apis that are not available by default in the console.
For example you will have this object in order to inspect the network tab:
chrome.devtools.network
Here two links you may find useful:
https://developer.chrome.com/extensions/devtools
https://developer.chrome.com/extensions/devtools_network
I hope it helps
I was finally able to do it using the s object available on chrome console. The url with encoded query string was available as s.rb object in chrome console. I just decoded it and extracted the query string parameters.
I try to migrate my google-auth-only project from firebase 2.x to 3.0 using the web-sdk example from:
https://github.com/firebase/quickstart-js/blob/master/auth/google-redirect.html
After setting up the initialisation-code with apiKey (via Google-Developer-Console - used the server-option) and all the other needed options, i use the "login with google"-button.
After this, an redirect-screen appears, then redirecting back to starting page and getting an "auth/internal-error".
Any suggestions?
I would recommend importing your project in the Firebase Console rather than configuring keys manually if possible, but appreciate there are some cases where that isn't ideal.
For the API key, try switching to the "Browser" type key rather than the "Server" one for anything running in the browser, and make sure it is approved for the domain you are using.
Google Sign In will need a client ID as well. The easiest way to implement is to use the signInWithPopUp method, but there are instructions for manually configuring the Google Sign In lib too.
If you do need to create a client ID, you can see the full instructions in the Google Sign In documentation.
The Short
I have an existing WCF Data Service that I would like to wire up to use in an AngularJS SPA using Breeze.
Can anyone show a noobie level example of how to do that with out access to the actual database (just the OData Service)?
The Long
I have an existing WCF Data Service that is already in use by a WPF app.
I experimenting with web development and would like to wire up to that service using Breeze. In case it matters, I am using Angular (and am setting up via the HotTowel.Angular nuget package).
I have done a fair amount of Googling and I am stuck.
I can see two ways outlined from my searching:
The First
Make is to make a Breeze controller on the server side of my web app.
The problem I see with that is the metadata. From my limited understanding I need to tell breeze all the meta data of my WCF Data Service. I know how to get the meta from my WCF Data Service (the url + $Metadata), but I don't know how to tell this to Breeze.
The Second
This way is more vague in implementation. I got it from the accepted answer on this question: Breeze.js with WCF Data Service.
Basically the answer here does not seem to work. It relies on something called the entityModel that I cannot seem to find (I have an entityManager, but not an entityModel. And the entityManager does not have the properties that the entityModel is shown to have.
In the end I like the idea of the second method best. That way I can directly connect to my odata service with out needed my web app to have a "in-between" server component. But I would happily take anything that does not need entity framework to connect to my database.
I tried several variations of the second option, but I just can't seem to get it to work. I also tried the Breeze samples. It has one for OData, but it still relies on having Entity Framework hook up to the source database.
To to clearly summarize what I am asking: I am looking for a Breeze example that connects to an existing WCF Data Service.
We regret that you were mislead by that old StackOverflow answer which was way out of date and (therefore) incorrect. There is no longer a type called entityModel.
I updated the answer there and repeat here the same advice.
The recommended way to configure Breeze so that it talks to a standard OData source (such as a WCF OData service) is
breeze.config.initializeAdapterInstance('dataService', 'OData', true);
Here's how you might proceed with defining an EntityManager and querying the service:
// specify the absolute URL to the WCF service address
var serviceName = "http://localhost:9009/ODataService.svc";
var em = new breeze.EntityManager(serviceName);
var query = breeze.EntityQuery.from("Customers")
.where("CompanyName", "startsWith", "B")
.orderBy("City");
em.executeQuery(query).then(function(data) {
// process the data.results here.
});
There is some documentation on this subject here.
A Web API OData service differs from a WCF OData service in several respects. But you may still find value in the Angular Web API OData sample.
I'm quite new to JayData, so this may sound like a stupid question.
I've read the OData server tutorial here: http://jaydata.org/blog/install-your-own-odata-server-with-nodejs-and-mongodb - it is very impressive that one can set up an OData provider just like that. However the tutorial did not go into details about how to customize the provider.
I'd be interested in seeing how I can set it up with a custom database and how I can add a layer of authentication/authorization to the OData server. What I mean is, not every user may have permissions to every entity and not every user has the permission to add new entities.
How would I handle such use cases with JayData?
Thanks in advance for your answers!
UPDATE:
Here are two posts that will get you started:
How to use the odata-server npm module
How to set up authentication/authorization
The $data.createODataServer method frequently used in the posts is a convenience method that hides the connect/express pipleline from you. To interact with the pipeline examine the method body of $data.createODataServer function found in node_modules/odata-server folder.
Disregard text below
Authentication must be solved with the connect pipeline there are planty of middleware for that.
For authorization EntityContext constructor accepts an authorization function that must be promise aware.
The all-allow authorizator looks like this.
function checkPerm(access, user, entitysets, callback) {
var pHandler = new $data.PromiseHandler();
var clbWrapper = pHandler.createCallback(callback);
var pHandlerResult = pHandler.getPromise();
clbWrapper.success(true); // this grants a joker rw permission to everyone
//consult user, entitySet and acces to decide on success/error
//since you return a promise you can call async stuff (will not be fast though)
return pHandlerResult;
}
I have to consult with one of the team members on the syntax that let you pass this into the build up process - but I can confirm this is doable and is supported. I'll get back with the answer ASAP.
Having authenticated the user you can also use EntityContext Level Events to intercept Read/Update/Create/Delete operations.
$data.EntityContext.extend({
MySet: { type: $data.EntitySet, elementType: Foobar,
beforeDelete: function(items) {
//if delete was in batch you'll get multiple items
//check items here,access this.request.user
return false // deny access
}
});
And there is a declarative way, you can annotate Role names with permissions on entity sets, this requirest that your user object actually has a roles field with an array of role names.
I too have been researching oData recently and as we develop our platform in both node and C# naturally looked at JayStorm. From my understanding of the technical details of JayStorm the whole capability of Connect and Express are available to make this topic possible. We use Restify to provide the private API of our platform and there we have written numerous middleware modules for exactly this case.
We are using JayData for our OData Service layer also, and i have implemnment a very simple basic authentication with it.
Since the JayData is using Express, so we can leverage Express' features. For Basic Auth, the simplest way is:
app.use(c.session({ secret: 'session key' }));
// Authenticator
app.use(c.basicAuth('admin', 'admin'));
app.use("/odata.svc", $data.JayService.OData.Utils.simpleBodyReader());
you also can refer to this article for more detail for authentication with Express: http://blog.modulus.io/nodejs-and-express-basic-authentication
Thanks.
I wrote that blogpost, I work for JayData.
What do you mean by custom database?
We have written a middleware for authentication and authorization but it is not open source. We might release it later.
We have a service called JayStorm, it has a free version, maybe that is good for you.
We probably will release an appliance version of it.
I need users to be able to post data from a single page browser application (SPA) to me, but I can't put server-side code on the host.
Is there a web service that I can use for this? I looked at Amazon SQS (simple queue service) but I can't call their REST APIs from within the browser due to cross origin policy.
I favour ease of development over robustness right now, so even just receiving an email would be fine. I'm not sure that the site is even going to catch on. If it does, then I'll develop a server-side component and move hosts.
Not only there are Web Services, but nowadays there are robust systems that provide a way to server-side some logic on your applications. They are called BaaS or Backend as a Service providers, usually to provide some backbone to your front end applications.
Although they have multiple uses, I'm going to list the most common in my opinion:
For mobile applications - Instead of having to learn an API for each device you code to, you can use an standard platform to store logic and data for your application.
For prototyping - If you want to create a slick application, but you don't want to code all the backend logic for the data -less dealing with all the operations and system administration that represents-, through a BaaS provider you only need good Front End skills to code the simplest CRUD applications you can imagine. Some BaaS even allow you to bind some Reduce algorithms to calls your perform to their API.
For web applications - When PaaS (Platform as a Service) came to town to ease the job for Backend End developers in order to avoid the hassle of System Administration and Operations, it was just logic that the same was going to happen to the Backend. There are many clones that showcase the real power of this strategy.
All of this is amazing, but I have yet to mention any of them. I'm going to list the ones that I know the most and have actually used in projects. There are probably many, but as far as I know, this one have satisfied most of my news, whether it's any of the previously ones mentioned.
Parse.com
Parse's most outstanding features target mobile devices; however, nowadays Parse contains an incredible amount of API's that allows you to use it as full feature backend service for Javascript, Android and even Windows 8 applications (Windows 8 SDK was introduced a few months ago this year).
How does a Parse code looks in Javascript?
Parse works through classes and objects (ain't that beautiful?), so you first create a specific class (can be done through Javascript, REST or even the Data Browser manager) and then you add objects to specific classes.
First, add up Parse as a script tag in javascript:
<script type="text/javascript" src="http://www.parsecdn.com/js/parse-1.1.15.min.js"></script>
Then, through a given Application ID and a Javascript Key, initialize Parse.
Parse.initialize("APPLICATION_ID", "JAVASCRIPT_KEY");
From there, it's all object manipulation
var Person = Parse.Object.extend("Person"); //Person is a class *cof* uppercase *cof*
var personObject = new Person();
personObject.save({name: "John"}, {
success: function(object) {
console.log("The object with the data "+ JSON.stringify(object) + " was saved successfully.");
},
error: function(model, error) {
console.log("There was an error! The following model and error object were provided by the Server");
console.log(model);
console.log(error);
}
});
What about authentication and security?
Parse has a User based authentication system, which pretty much allows you to store a base of users that can manipulate the data. If map the data with User information, you can ensure that only a given user can manipulate specific data. Plus, in the settings of your Parse application, you can specify that no clients are allowed to create classes, to ensure innecesary calls are performed.
Did you REALLY used in a web application?
Yes, it was my tool of choice for a medium fidelity prototype.
Firebase.com
Firebase's main feature is the ability to provide Real Time to your application without all the hassle. You don't need a MeteorJS server in order to bring Push Notifications to your software. If you know Javascript, you are half way through to bring Real Time magic to your users.
How does a Firebase looks in Javascript?
Firebase works in a REST fashion, and I think they do an amazing job structuring the Glory of REST. As a good example, look at the following Resource structure in Firebase:
https://SampleChat.firebaseIO-demo.com/users/fred/name/first
You don't need to be a rocket scientist to know that you are retrieve the first name of the user "Fred", giving there's at least one -usually there should be a UUID instead of a name, but hey, it's an example, give me a break-.
In order to start using Firebase, as with Parse, add up their CDN Javascript
<script type='text/javascript' src='https://cdn.firebase.com/v0/firebase.js'></script>
Now, create a reference object that will allow you to consume the Firebase API
var myRootRef = new Firebase('https://myprojectname.firebaseIO-demo.com/');
From there, you can create a bunch of neat applications.
var USERS_LOCATION = 'https://SampleChat.firebaseIO-demo.com/users';
var userId = "Fred"; // Username
var usersRef = new Firebase(USERS_LOCATION);
usersRef.child(userId).once('value', function(snapshot) {
var exists = (snapshot.val() !== null);
if (exists) {
console.log("Username "+userId+" is part of our database");
} else {
console.log("We have no register of the username "+userId);
}
});
What about authentication and security?
You are in luck! Firebase released their Security API about two weeks ago! I have yet to explore it, but I'm sure it fills most of the gaps that allowed random people to use your reference to their own purpose.
Did you REALLY used in a web application?
Eeehm... ok, no. I used it in a Chrome Extension! It's still in process but it's going to be a Real Time chat inside a Chrome Extension. Ain't that cool? Fine. I find it cool. Anyway, you can browse more awesome examples for Firebase in their examples page.
What's the magic of these services? If you read your Dependency Injection and Mock Object Testing, at some point you can completely replace all of those services for your own through a REST Web Service provider.
Since these services were created to be used inside any application, they are CORS ready. As stated before, I have successfully used both of them from multiple domains without any issue (I'm even trying to use Firebase in a Chrome Extension, and I'm sure I will succeed soon).
Both Parse and Firebase have Data Browser managers, which means that you can see the data you are manipulating through a simple web browser. As a final disclaimer, I have no relationship with any of those services other than the face that James Taplin (Firebase Co-founder) was amazing enough to lend me some Beta access to Firebase.
You actually CAN use SQS from the browser, even without CORS, as long as you only need the browser to send messages, not receive them. Warning: this is a kludge that would make my CS professors cry.
When you perform a GET request via javascript, the browser will always perform the request, however, you'll only get access to the response if it was from the same origin (protocol, host, port). This is your ticket to ride, since messages can be posted to an SQS queue with just a GET, and who really cares about the response anyways?
Assuming you're using jquery, your queue is https://sqs.us-east-1.amazonaws.com/71717171/myqueue, and allows anyone to post a message, the following will post a message with the body "HITHERE" to the queue:
$.ajax({
url: 'https://sqs.us-east-1.amazonaws.com/71717171/myqueue' +
'?Action=SendMessage' +
'&Version=2012-11-05' +
'&MessageBody=HITHERE'
})
The'll be an error in the console saying that the request failed, but the message will show up in the queue anyways.
Have you considered JSONP? That is one way of calling cross-domain scripts from javascript without running into the same origin policy. You're going to have to set up some script somewhere to send you the data, though. Javascript just isn't up to the task.
Depending in what kind of data you want to send, and what you're going to do with it, one way of solving it would be to post the data to a Google Spreadsheet using Ajax. It's a bit tricky to accomplish though.Here is another stackoverflow question about it.
If presentation isn't that important you can just have an embedded Google Spreadsheet Form.
What about mailto:youremail#goeshere.com ? ihihi
Meantime, you can turn on some free hostings like Altervista or Heroku or somenthing else like them .. so you can connect to their server , if i remember these free services allows servers p2p, so you can create a sort of personal web services and push ajax requests as well, obviously their servers are slow for free accounts, but i think it's enought if you do not have so much users traffic, else you should turn on some better VPS or Hosting or Cloud solution.
Maybe CouchDB can provide what you're after. IrisCouch provides free CouchDB instances. Lock it down so that users can't view documents and have a sensible validation function and you've got yourself an easy RESTful place to stick your data in.