I'm studying how to create a web service with Genexus 17U10. The first part looks very simple, following this https://wiki.genexus.com/commwiki/servlet/wiki?4210,Web+Services+with+GeneXus I can expose the service and consume it in another project. Now I want to add some kind of authorization but I can't find how to set it. Does genexus manage it somehow? I can't find informations about this
It is easier and recommended to use REST services and authenticate using GAM.
For SOAP services you have to add extra programming.
Related
am looking for a sample quarkus reactive project with multiple OidcClients to make multiple service calls?
Eg: DemoProject wants to call service A, B, C, D.
DemoProject used keycloak authorization with grant type as password.
Service A has OidcClientA, service B has OidcClientB, service C has OidcClientC, Service D has OidcClientD.
How can we simply inject OidcClient into a specific service and fetching the specific token, authorization header to a specific service automatically?
Quarkus Documentation: https://quarkus.io/guides/security-openid-connect-client
This is completely possible, and actually very easy.
The problem is that is not properly documented; i had to dig into quarkus source code to find it.
In your application.properties, just add the client-name you want after quarkus.oidc-client.
For example, before named client:
quarkus.oidc-client.auth-server-url=<url>
Will then become
quarkus.oidc-client.<client-name>.auth-server-url=<url>
Then in the code, where Tokens or OidcClient is injected, just add #NamedOidcClient("").
And that's it!
I will post with a working git later.
I couldn't find any sample project, but i think that you just need to configure the named clients in your properties files and they will be accesible through the OidcClients class.
Here you can find more information.
If you are going to consume each service individually I would suggest you create a facade or a service in front of the rest client to deal with this complexity or maybe a filter for each service rest-client
I have a web application (using Spring Boot). I am thinking to use some 3rd party tool for Authentication/Authorization purpose, instead of handling Identity logic myself.. and my web-app is a simple application.
So, do you think whether some IAM tool (Identity and Access Management) is over-burden for my simple web application? or do you suggest me to create Authorization Server myself, instead of some any IAM tool?
I have a spring mvc application which runs correctly,now another colleague wants to call the same functions from another application but he needs REST URL of my functions.
how is it possible to provide the same functionality through spring REST?
is it just with new annotations .please provide some resource to show me how to do it.
when server has a service, only legal clients which had any contracts with server can access it. And clients can use service by the way such as: use RestTemplate to get/post request to URL of service, and clients can get data as JSON, or XML type if you have an equivalent object as this image:
Also, a service can be support as a interface, ex: google search is a service supported by google, but it's not rest service.
If you know each other URL address you can consume each other REST API from java code by using RestTemplate object.
I would advise you to go over the Spring starter guide which deals with that issue, here is the link (Consuming a RESTful Web Service):
https://spring.io/guides/gs/consuming-rest/
Currently VS 2015 Update 2 provides an easy way to create owin based stateless web api service using create new service template for service fabric application. Is there a reason why only stateless web api service template is provided and not stateful web api service? If I wanted to, can I modify the stateless web api service to derive from stateful web service? Is it that simple? Or are there any gotchas with this approach?
Web Api is intended to be facade/public entry point to the service fabric app. Being stateless saves the clients from dealing with resolving partitions/addresses and other hassle.
If you want to - you can modify web api service and make it stateful. Maybe it would be even easier to create stateful service from the template, install missing packages (that web api template has), copy OwinCommunicationListener and Startup, wire them into CreateServiceReplicaListeners override, and add valid service endpoint to ServiceManifest.xml. OwinCommunicationListener will provide unique address for each replica.
Yup, you certainly can modify it to be stateful. Web API is great for internal service-to-service communication as well as a public-facing API.
There is a caveat that we are currently working through: The web host for stateless uses Kestrel, which presents some difficulties for stateful services where multiple replicas share the same process, because Kestrel doesn't have the same port-sharing capabilities that http.sys-based hosts do. We're working on a solution that makes it easier to use Kestrel for stateful, but in the meantime you can always use the WebListener host, which is the http.sys-based host.
If you're interested, I'm working on a project that will have an ASP.NET Core 1 stateful service (among other cool things) that you can track here: https://github.com/vturecek/service-fabric-xray.
im trying to understand where WSDL's fit in, in a typical web service backend application. i am coming from a Spring background and in my experience so far, in Spring, each url request gets mapped to a specific controller class via a dispate servlet running in the web container. you can specify which url matches a given controller via xml config or from annotations.
is using a WSDL the same thing as using an xml config file to map url requests to java objects?
Thanks in advance. im moving from Spring to standard j2ee/EJB3.
WSDL is just a description of Web Service interface, most Web Service systems generate those descriptions on fly like for example when you create asmx web services you can generate WSDL on fly by typing http://yourhost/yourwebcontext/yourwebservicename.asmx?wsdl and it will return you the description of that web service. Then you can use a tools that generate stub proxies for coding using those descriptions automatically, for example in Visual Studio when you add an Web Service Reference those operations are done automatically
No, WSDLs are not like a dispatch servlet.
A WSDL file is a description of a web service (SOAP, REST, etc.). A WSDL can (theoretically) be used by anyone to generate executable code which consumes the web service described by that WSDL.
From the WSDL tag info:
"WSDL" stands for "Web Services Description Language." It is an XML language used to describe a web service to code that wishes to consume it. It describes the messages sent and received, the possible faults, and the communication and security requirements.
From WSDL Essentials:
In a nutshell, WSDL represents a contract between the service requestor and the service provider, in much the same way that a Java interface represents a contract between client code and the actual Java object. The crucial difference is that WSDL is platform- and language-independent and is used primarily (although not exclusively) to describe SOAP services.
Using WSDL, a client can locate a web service and invoke any of its publicly available functions. With WSDL-aware tools, you can also automate this process, enabling applications to easily integrate new services with little or no manual code. WSDL therefore represents a cornerstone of the web service architecture, because it provides a common language for describing services and a platform for automatically integrating those services.