Imagine that I have a route in my Play application that returns some JSON :
GET /getjson controllers.someMethod()
I want this route to be available from within my application because I want to call it to get the JSON it returns and do something with it. But, I don't want it to be available from the outside. I don't want the http://mywebsite.com/getjson to respond to a client visiting my website.
How should I do it ?
Whatever you define in the routes (controller layer) will be available to other services as RESTFUL endpoints.
For your case, you can simply make someMethod() as a method at service layer. There is not need to put it at the controller layer.
firstly, delete the following route item from conf
GET /getjson controllers.someMethod()
secondly, create another object whose definition is the same as the controllers.someMethod(), but not extends from Controller
last, delete the definition of the "controllers.someMethod()".
Then, the redefinition of the someMethod() is just available in the internal, but can not be called from the outside which means the "/getjson" url is unavailable and can not be reached.
Good luck.
Related
I'm making a Flutter SIP call application using dart-sip-ua https://github.com/flutter-webrtc/dart-sip-ua.
I need to use PUSH messages to wake up the application and set the call.
I was able to wake up the application, but how to connect with the current call?
According to the documentation, when making a call, a Call object is created and it has an answer() method.
But when the Call object wakes up, we do not have, respectively, the answer() method either.
I tried to find a solution using SIPUAHelper.findCall(callUUID), but without success: callUUID is generated when the call is initialized, and we do not know it in advance to pass it via PUSH.
That is, I show my CallScreen, but I don’t have a Call object...
Is there really only one option? Wait until the SIP connects itself? It could be 5, 10, 30 seconds...
Help me please. What is the approach to accomplish this task? I feel that my approach is not correct.
Thank you!
One possible solution to your problem could be to store the Call object in a persistent storage, such as a database or a file, whenever it is created. Then, when the application wakes up and receives the PUSH message, you can retrieve the Call object from the storage and pass it to the CallScreen. To do this, you can use a database library like "sqflite" or a file library like "path_provider" to store and retrieve the Call object as a serialized object.
Another option could be to use the "callUUID" of the Call object as a key to store and retrieve it from the storage. You can pass the "callUUID" via PUSH message, and use it to retrieve the Call object from the storage. However, you need to make sure that the "callUUID" is unique and persistent across sessions, so you may need to use a combination of the SIP call ID and the local session ID.
A third option could be to use a global state manager like "Provider" or "Redux" to store the Call object and share it across the application. This way, you can access the Call object from any widget, even if it is not passed directly as an argument. However, you need to be careful with the performance and complexity of using a global state manager, especially if you have a large and complex application.
I hope these suggestions can help you solve your problem
We are trying to implement our custom service chain element (like LogHandler) with cookbook: https://support.intershop.com/kb/index.php/Display/2329T4#Cookbook-ManagedServiceFramework-Recipe:AddChainElements
At end of cookbook there is a sentence about registering custom chain element with service manager:
Last but not least, the handler must be registered so it can be found according to its ID.
This is done via the registerChainElement( ID, Class) method of the ServiceMgr.
The problem is that we don't know where to add call to registerChainElement method? I suppose that has to be executed on server start or on service registration?
Thank you for your help!
You can do this in method "Cartridge.onReadyHook()" of your Cartridge class.
I have a rest endpoint which would start the scheduler of loading a XML to memory. Whenever I hit that rest endpoint, it loads the XML in memory and would return the XML after its ready (would take 10 - 15 seconds). When the same endpoint is accessed again, it would return the cached XML. Everything works fine but for now I have to manually hit the endpoint for the scheduler to start. Is there a way to hit the endpoint automatically via a simple code in startup? Or is there any other solution for this?
Normally, a component in the Nucleus is instantiated at first access, not at system start-up.
The way to have anything done at start-up in ATG is to create your component, and then to add its nucleus path to the list of initial services in the /Initial component (or from one of the many other Initial components changed off of it)
The component should be globally scoped. Because /Initial is instantiated at start-up, the services it references will also be instantiated as dependencies.
If your component is a POJO, then the no argument constructor will be invoked on component start-up, then the setX method will be called for each property with a value defined in its properties file.
If your component is extended from Generic Service, then additionally, beforeSet and afterSet methods will be called, before and after the set methods are invoked, if they exist, and finally doStartUp will be called.
This is all part of the fundamental lifecycle of components that the Nucleus manages.
This gives you a number of hooks with which to invoke your custom code.
Now, in your question, you ask how to call a REST endpoint at start-up. However, I believe what you actually want to ask is how to ensure that a particular piece of code gets executed at system start-up. A REST endpoint is how you are triggering it today, manually, from outside the Nucleus. But that does not mean that it must call a REST end point if it is to be automatically called at start up.
The easiest way to achieve what you want is
define a class that extends GenericService
override the doStartUp method
put the code you want to execute in this method, or invoke the code on another component from here
define a globally scoped component for the class
Add the component to the initialServices property of the Initial component
Restart the server and check that your code is being called at start-up. Put some debug statements in, and switch debug logging on in your layer.
Note, you may actually also want to think about whether you really need to invoke your code at system start-up. Anything in initial services adds to the start time of the server. Depending on your requirements, it may be better to do it on first access of your application service rather than at server start-up.
To be specific, I need to create an array variable that will be used for caching data, but I don't want to use ZF2 Cache Adapter.
I've tried to create a invokable class that would be used to instantiate object of my class that contains methods for setting and getting values from array that is also defined as a property of that class. As far as I understand, service manager treats all services as shared by default, which is supposed to create only one instance off my class when I get the service by service manager method get for the first time. But this doesn't work, if I get that service in different actions in my Controller class, which is what I need to do. So, how am I supposed to achieve this effect? Create an object that is available application-wide?
I had this kind of problem with managing a cart.
My cart is modeled by a CartManager, which is a unique instance for a user (session) and until paiement (cart is persisted in database).
I register my CartManager as a Service to build the first instance, this instance is built during an event handler attached on MvcEvent::EVENT_ROUTE, once built I override the CartManager service with my Instance, this way wherever I call the service, my first instance is served.
Then I persist (session or database) my Instance in an other event handler attached on MvcEvent::EVENT_FINISH.
All the event handlers are attached in Module::onBoostrap()
I was looking for this on google and I found some articles on it They say it is used for HigherOrderMessaging and I tried to read the code to but everything was over my head can any body give simple example of it how we can use them? They were saying its used for passing returned object from method to another object. And another question when I develop apps never came situation where I need to use something like this.
In Objective-C, a trampoline is an object returned by a method that exposes some kind of message interface. When messages are received, it bounces the message on to another object.
Example One:
Return a proxy of a service client. When methods are invoked on the proxy, it first checks if the user has permission to proceed.
Example Two:
Make all the objects in an array do something:
[[windowsArray do] setHidesOnDeactivate:YES];