I am running several gcloud services which have assigned urls automatically in following format:
https://SERVICE_NAME-XXXXXXX-ew.a.run.app/
This is not particularly easy to work with and to pass these URLs to clients. Alternative is to use the custom domain, but this needs hardcoding subdomains within DNS records (as far as I understand) and I would like to avoid that and use the default URLs.
What is the best practice to work with these URLs? I can imagine keeping some mapping of service->URL and passing it to clients, but I would like to avoid reinventing the wheels.
Edit: I've released an external tool called runsd that lets you do this. Check it out: https://github.com/ahmetb/runsd
Thanks for this question! The "Service discovery by name" for Cloud Run is very much an active area of work. Though, there are no active timelines we can share yet.
You can see a prototype of me running this on Cloud Run here: https://twitter.com/ahmetb/status/1233147619834118144
APIs like Google Cloud Service Directory linked are geared more towards custom/DIY service discovery you might want to build to your RPC stack such as gRPC. It's more of a managed domain name directory, that you can integrate with your RPC.
If you are interested in participating an alpha for this feature in the future, drop me an email at ahmetb at google.
You can use a beta service Service Directory.
At service deployment
Create your service with a name and the URL as metadata
In your code
Request the service metadata with its name, and get the URL
Use the url
You can't use the endpoint feature of the service because your don't have IP/Port.
However, for now, there is client library and you have to use API directly.
Related
I need to create a development Google OAuth 2.0 Client ID for my app. I see that you cannot have an origin of http in the list of allowed origins. The error states...
Invalid Origin: This app has a publishing status of "In production".
URI must use https:// as the scheme.
So it seems I need to create a 'development app' so it can have its own OAuth key. However, I am finding it confusing on how to do this.
In my view I can see my org and what I think is a "Project". I can add another project, but I am thinking there should be a way to add an "App" to my existing project.
I think the hierarchy goes Org -> Projects -> Apps correct?
Where does one add a new App?
It is true that any app that has been set to production and has been verified can not have a redirect uri that is not https Redirect URI validation rules
You can create a new project on [https://console.cloud.google.com/apis/dashboard] for development.
Google says that for apps in production, redirect URIs must use the https scheme, not plain http. It seems however that localhost IP address URIs are exempt from this rule.
If you just need to create a new OAuth 2.0 Client ID, go to Projects -> /your app/ -> APIs & Services -> Credentials.
Over there, choose Create New Credential, then choose OAuth Client ID (depending on your use case).
Then you will be asked for the id/package-name of your app you want to create a Oauth client id for.
Otherwise you can always create a new project.
OAuthClient
The way you add an "app" really depends on how that application is implemented. You are correct that organizations have projects, but projects don't really have "apps," they have resources.
In this organizational hierarchy, the idea is that you either add a virtual machine, or a kubernetes cluster, or a cloud function, depending on whether you're using Google Compute Engine, Google Kubernetes Engine, or Cloud Functions, respectively (or anything else).
If you were using Google Compute Engine to implement your web application, for instance, you would add the virtual machine to your project (either via the web interface or the gcloud command-line interface), and then you'd configure a web server to handle incoming requests at whatever address you wanted for the OAuth webhook.
Again though, the main point is that you don't really add "apps", you add resources, so it really depends on how you're going to be implementing your web application. In short, however, you do not need to create another project. That would just bring you back to square one :)
We are web developers building a deployment preview service with Google Cloud Run. Not a lot of experience with this... ;-)
We have mapped a custom domain to the service and the problem is that when the developers are pushing revisions, GCP returns the revision URLs assigned by GCP, not revision URLs using the custom domain.
This is problematic for us because of the cross-origin, and the way we whitelist apps that can call our APIs, etc.
So my questions is: Is there a to have revisions URLs be subdomains of our custom domain or something like that?
Would like...
https://branch-name---service-name-123456.a.run.app
if possible to become something like...
https://branch-name---service-name-preview.customdomain.com
I'm building a desktop client app (win/linux/mac) with a backend hosted in GCP (I'm considering other cloud platforms too). The desktop app should be minimalistic and provide access to local machine resources to the backend. And I'm looking for a way to invoke my app from the server (when some event occurs) and then the app would do some work on a local machine. Here's what I've tried so far.
Google Cloud Pub/Sub. Seems like it does what I need, but to make it work I have to create a service account, generate JSON key and store it locally, which is not good. I can restrict the service account access permissions, of course, but still it doesn't look good to me. Maybe there are other ways to auth my app running at the end user machine? I want to keep my desktop app minimal (ideally without UI, just an "agent" console process / Windows service). Maybe I could consider a login screen to connect the app with the backend, if that solves the problem, but I don't want to overcomplicate.
Google Cloud Run + SignalR / WebSockets. This solution also looks good, but it has one significant disadvantage. As long as there's at least one open WebSocket the Cloud Run instance is considered active and therefore billed. There are other difficulties related to scalability and container instances synchronization too.
What do you think about the options above, and what are the other possibilities? Am I left with REST API and polling for updates? I'm quite new to the cloud stuff so any help is appreciated. Thanks!
If you want to be able to invoke your local app from Google Cloud, you need 2 things
The first one, to register your app on Google Cloud, with, preferably, a auth mecanism (can be an API key for example). Like this, the GCP backend know where to call you app (which IP/port) and how (the auth mechanism)
The second is to have your app up and running and listen external communication. HTTP is the easiest way. Wait a HTTP call on the IP/port defined during the registration, check the auth and perform the process.
You can store the data (location and the auth) in firestore for example, and use Cloud Run to perform the HTTP call.
You can also inverse the solution and to poll (long polling or regular poll) the backend from the local app when it is running.
The 2 approach are possible, the second one slightly easier but can be challenging to manage the security.
I am using Axis2 (1.5.3 currently) and Tomcat (6.0.26 currently) and am running a web service. I would like to also host HTML pages for configuring the web service.
What is the best way to go about this? I assume keeping the same context is key, but perhaps it is not.
My current distribution is located under a folder structure similar to this:
Tomcat/webapps/mycompany
With the actual service code here:
Tomcat/webapps/mycompany/WEB-INF/services/myService
In a browser, I can hit my web service by going to here:
/mycompany/services/myService
I note that I can drop actual HTML files in this path and Tomcat will, indeed serve them up.
For instance, if I put "index.html" under Tomcat/webapps/mycompany, I can navigate to /mycompany/index.html and see my html.
What I want to do is have this HTML be attached to JAR/class files that can interact with the already-existing service class files in the same context as the service. Therefore, I can have the browser configure the web service directly.
Is this possible, and is there a tutorial or something out there that will help me with this? Note that I have been working with Tomcat and Axis2 for a while now for this particular web service, but I have never actually deployed a web application/html using Tomcat before.
Thanks.
First of all what do you mean by a configuring a service. Normally in SOA world services are analogous to interfaces. IMHO you can just change a service, since their are other users that rely on the services you are exposing.
If i want to change a service i would rather introduce a new version of the service after deprecating the existing one.
Are you talking about applying QoS to existing serviecs. Then that makes sense.
Anyway, If you want to have a web-app alongside with axis2 service engine, it is possible. If you look inside the axis2 war file you'll find the web.xml entry to Axis2Servlet. It is this servlet that serves the web services requests.
So, what you need is the Axis2Servlet mapping in your web-app along with your usual servlet-mappings. Number of possible ways to configure your services using web-app files. One options is to use web-services call itself to (with authentication) to configure it.
By "configure a service", take this example:
The service has a set of datasets.
Each dataset exists in a separate database.
The service can manage 0..n datasets.
The service must be configured to know about each dataset.
This is what I'm configuring. I'm not trying to configure Axis itself or redefine the service.
I would like to host the HTML using the same instance of Tomcat that I'm hosting the web service with. It needs to manage sessions, have login capability, an whatnot, and has to be able to configure the web service live.
From what I'm reading, it's probably best to make an interface to the web service that the web application module can call into from a different context.
Is there a better way?
I am new to developing web services using java. I have an academic project where I need to do dynamic service composition. For that I can't directly create a service-client for a particular service because if I do so then that client will call that particular service only. Client need to search various web services and then out of those services select any one at run time and also call that service at run time.
I was able to develop the web service(JAX-WS) using Eclipse(indigo), I also created the client for that web service and every thing is working fine. Now my problem is that while creating the client I am hard coding the client to call that particular web service only(since I am creating the client using the WSDL file of the service). However I actually need to call any one of the searched service, but for that I need to publish the service some where then discover it and then call it.
I tried publishing the service to juddiv3. But on juddiv3 I could only publish the sample service supplied with the juddiv3. When I try to publish service created by me then it is not getting displayed in the group of published services.
Is there any other UDDI server which I could install on my local machine and then publish and discover the service from that. Also I was not able to figure out how to create a client that will modify itself at run time to call any one service out of various searched services.
Kindly provide the necessary steps and code.
Thanks
You can use jUDDI (http://juddi.apache.org/ ).
juddi is based on UDDI v2.0, v 3.0 .
Here, you can publish as well as discover your web service.
For integration, you have to make some application which integrates with jUDDI.
But I think for your academic project, and for your purpose, jUDDI is best suitable! ( :) )
jUDDI has a boat load of examples in the source code trunk. You may want to check them out. It's difficult to guess what the problem is from the little information you've provided. Consider contacting the jUDDI team for further assistance. http://svn.apache.org/repos/asf/juddi/trunk/juddi-examples/. There's also additional document for working with UDDI in the jUDDI user's guide, which is at the jUDDI web site
You cannot directly publish on jUDDI. You need to create publisher entities in jUDDI server also. You'll find Rename4Sales and Rename4Marketing examples in 'Classes' folder in the standalone server's juddi application. Use these XMLs as your basis and create your own entity. You also need to configure the server's login credentials.
I suggest you follow the tutorials on jUDDI blog.