microserv | JSON-RPC over websocket with multicast service discovery | Websocket library
kandi X-RAY | microserv Summary
kandi X-RAY | microserv Summary
JSON-RPC over websocket with multicast service discovery with a browser compatible client.
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QUESTION
I have this issue in a Spring Boot microservices JHipster project, the issue started without changing any code. the microservers are deployed in a Kubernetes Microsoft Azure enviroment. The issue is related to a Hazelcast problem.
Stack trace:
...ANSWER
Answered 2021-Aug-06 at 16:25Two processes with the (default) cluster name dev have found each other and attempted to cluster together. Versions are incompatible so this fails.
You could turn off discovery on both processes, but if you don't control the other this may not be viable.
Instead you could use config.getGroupConfig().setName('...') to change the name of your cluster to prevent the join attempt.
QUESTION
I use AWS ECS for my server (multiple microservers) in some website, and I use API Gateway + OpenApi to define the routes and to integrate them with the ECS microservers.
Every path prefix should integrate with different ECS and direct all subpaths to there.
Is there a way to use some regex in OpenApi to integrate it with ALL paths and operations under some path?
This is how I'm defining the path for single path and single operation:
OpenApi:
...ANSWER
Answered 2021-Apr-18 at 03:29Use the proxy integration. See Documentations
When you use the proxy integration, your all sub API will be proxied to the targets.
QUESTION
I have a Spring Cloud Gateway, a eureka service registry and two microservives. I have no problems with sending the request directely to the sevice with: http://localhost:8081/auth. When i want to use the Gateway http://localhost:8080/auth, i always get a 404 error response. The services and the gateway all connect to the eureka server. Here is my code:
Gateway
application.properties:
...ANSWER
Answered 2021-Mar-16 at 09:40Shame on me. Problem was that i had the wrong dependencies for my gateway. I only had spring-cloud-starter-config, but i needed spring-cloud-starter-gateway... Took me over a week.
QUESTION
I want to run TensorFlow on my microserver. I'd like to install a non-systemd Linux if possible e.g. Alpine, but I am new to TensorFlow and I am not sure how much it relies on systemd or if it would run without it. Would it?
...ANSWER
Answered 2021-Jan-28 at 03:05TensorFlow is a regular programming library, it's not a system library and not running as a service, thus it isn't dependent on systemd.
I've tested TensorFlow on Windows 10 Subsystem for Linux (WSL) which doesn't come with systemd and it's still working.
QUESTION
I have an integration test for rest api microservers that stubs some of the external resources. Most of them work, but there is a particular one which becomes not available during the test.
- Other tests stubbed the same way work
- Given stubbing works when request is sent directly from the test or if called from postman while test is in Thread.sleep()
- Stubbing does not work when the same request as used above is sent from one of the microservices called by the test or from postman if a microservice is paused (paused on a debug breakpoint). Other stubs work in these conditions.
...
ANSWER
Answered 2020-Jun-22 at 18:42Although I have not located it in the code yet, my entry point service was responding and then processing the request asynchronously. Meanwhile, the test was receiving the response and shutting down along with WireMock, and microservices could not access the mocked resource any longer.
QUESTION
After having followed a tutorial about microserves and OAuth2 in Maven Spring Boot, I got a problem. I want to exclude a request from the authentication, so unauthorized data can be gotten. This only doesn't seem to work in the way I do it. Can someone help me with this?
Tutorial I followed: https://developer.okta.com/blog/2018/02/13/secure-spring-microservices-with-oauth#microservices-architectures-with-spring-boot--spring-cloud
What I tried:
...ANSWER
Answered 2020-Jun-13 at 06:44Firstly, your configuration is the same as the followings . Just removing those unnecessary duplicated authorizeRequests() and and() , which make it look more clearly :
QUESTION
I have a netty server and client in the project and want to exchange message between them.
The netty server code:
...ANSWER
Answered 2020-Jun-10 at 10:02You should check the ChannelFuture that is returned by writeAndFlush to be understand if the write failed.
For doing so add a ChannelFutureListener to it:
QUESTION
We are moving soon this project to production.
1 - Our Mobile App will create money transfer by posting it to our internal microserve. Such post request will return a CustomToken generated from our internal NodeJs server.
2 - Our internal microservice will replicate such transfer to Firestore and update its state on Firestore accordingly.
3 - Instead of our Mobilie App poll or listen our internal microservice to get the status it will listen to Firestore for getting the status from respective document. In order to listen, it will use the CustomToken returned from post in step 1. Our company wants just take advantage of Real Time Database feature from Google Firestore for this project (reactive approach).
Do you see any consideration/issue when compared what I am doing with this statement: "Google prefers in most cases that you authorize using a service account"? (copied from other related discussion)
The CustomToken is created internally with this NodeJs server and depending on uid extrated from antenticated user authentication/users from Google Firebase
...ANSWER
Answered 2020-May-16 at 18:53From what I can see the way you currently mint the custom is purely based on the service account, and your implicit knowledge of the UID of the user (the UID you copied from the console). There are no other user credentials involved in the code you shared, nor in other parts of the flow as far as I can see.
I am curious to understand how you are protecting this token generation though: what prevents any other web client from calling your listenSingleTransferWithToken method or otherwise reading the token from the database?
QUESTION
Context: I have just learn a trick to get (download) data from FireStore Dashboard. Obviouslly, it is much easier just open Google Dashboard on Browser and see with my eyes to own Google Dasboard. Nevertheless, for personal reasons, in my company the operators can't look at a third Dashboard. They only can see internal Dashboards. I am trying some workaround where I can get/download the same data used for fill in Dashboard and imported it to our internal solution based on Dynatrace/ELK.
For learning purposes, in order to download Google Dashboard data I followed:
1 - Get a ACCESS_TOKEN using gcloud
...ANSWER
Answered 2020-May-07 at 16:06So, the auth token is generated from your gcloud init authorization, which is end-user credentials. That's why you're getting that warning. Because you've used your manually signed in credentials to generate the token.
The preferred way to auth is to use a service account (documentation here: https://cloud.google.com/iam/docs/service-accounts) for authentication. That documentation will also walk you through creating a service account. If you're using it to talk to Firestore, your service account will need appropriate Firestore role permissions. Not to confuse you, but the roles in IAM are for datastore although they apply for Firestore.
This page: https://cloud.google.com/firestore/docs/security/iam lists out which roles/permissions your service account will need in order to do various things with Firestore.
Now, all that being said, the key-file it's talking about is the service account key that you can download when you create the service account. Easiest is to do it via the console in your GCP project, as when you're creating the service account, there's a handy button to create the key, and it downloads it to your local machine.
QUESTION
I'm trying to access JSON data (in R) from a REST API.
To authenticate myself, I need to use a POST method in https://dashboard.server.eu/login. The data that needs to be sent are email and password:
...ANSWER
Answered 2020-Mar-11 at 22:50Looking at the image of res in your question, the message is there, under content - it's just that the content is stored as a vector of raw bytes, which is why you didn't recognise it as json.
Since any file type can be sent by http, the contents in an httr response object are stored in raw format rather than a character string for various reasons - perhaps most importantly because many binary files will contain a 0x00 byte, which isn't allowed in a character string in R.
In your case, we can not only tell that res$content is text, but that it is your "missing" json. The first six bytes of res$content are shown in your image, and are 7b, 22, 5f, 69, 64, 22. We can convert these to a character string in R by doing:
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