grpc | gRPC packages and tools for the Go programming language
kandi X-RAY | grpc Summary
kandi X-RAY | grpc Summary
This repository contains packages and tools for gRPC for the Go programming language.
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Top functions reviewed by kandi - BETA
- Main entry point
- NewResolver returns a new Resolver .
- _Echo_Echo_Handler is an implementation of the EchoRequest interface .
- SetEndpoints configures the Resolver to use .
- SetCheckTimeout sets the timeout for resolver
- SetUpdateInterval sets the interval for resolver .
- SetLogger sets the logger used by Resolver .
- Next returns the next updates .
- newServer returns a new echoServer .
- RegisterEchoServer registers the EchoServer for the given gRPC server .
grpc Key Features
grpc Examples and Code Snippets
Community Discussions
Trending Discussions on grpc
QUESTION
I have bunch of GRPC microservices and they are using self signed certs. I add authentication info to the GRPC channel which is then used to identify endpoints and provide right services.
Now I want migrate to Istio mTLS.
In phase one, I got Istio to BYPASS all GRPC connections and my services works as it is now.
In Phase two, I want to hand off TLS to Istio, but I am stuck on how to pass the authentication information to GRPC?
How do you handle auth in Istio mTLS setup?
GRPC can support other authentication mechanisms Has anyone used this to inject Istio auth info to GRPC? any other suggestions on how you implemented this in your setup
I am using go-lang just in case if this can be useful to provide any additional information.
Thanks
...ANSWER
Answered 2021-Jun-11 at 09:21One way of doing this is using grpc.WithInsecure(), this way you don't have to add certificates to your services, since istio-proxy containers in your pods will TLS terminate any incoming connections.
Client side:
QUESTION
I have following code.
...ANSWER
Answered 2021-Jan-25 at 01:22Take a look at Type.GetType(string):
QUESTION
Migrated my Azure Function to .net5 the other day and now I'm struggling with basic input binding stuff.
My query => /api/query?sgtins=foo1&sgtins=foo2
On version 3.1, a simple req.Query["sgtins"] would do the job. But now on .net5 I have no idea. Using strings, ints etc. is fine but as soon as I use an IEnumerable it crashes during runtime. Any ideas? Documentation regarding .net5 is pathetic at the moment :(
This is my demo code. Using url as mentioned above.
Here is the exception;
[2021-06-14T08:34:53.015Z] Executed 'Functions.QueryProductEntities' (Failed, Id=5f33b8ab-fdb2-483c-93fc-6dac3bb25ddc, Duration=531ms) [2021-06-14T08:34:53.015Z] System.Private.CoreLib: Exception while executing function: Functions.QueryProductEntities. System.Private.CoreLib: Result: Failure [2021-06-14T08:34:53.015Z] Exception: Microsoft.Azure.Functions.Worker.Diagnostics.Exceptions.FunctionInputConverterException: Error converting 1 input parameters for Function 'QueryProductEntities': Cannot convert input parameter 'sgtins' to type 'System.Collections.Generic.IEnumerable`1[[System.String, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]]' from type 'System.String'. [2021-06-14T08:34:53.015Z] at Microsoft.Azure.Functions.Worker.Context.Features.DefaultModelBindingFeature.BindFunctionInput(FunctionContext context) in D:\a\1\s\src\DotNetWorker.Core\Context\Features\DefaultModelBindingFeature.cs:line 70 [2021-06-14T08:34:53.015Z] at Microsoft.Azure.Functions.Worker.Invocation.DefaultFunctionExecutor.ExecuteAsync(FunctionContext context) in D:\a\1\s\src\DotNetWorker.Core\Invocation\DefaultFunctionExecutor.cs:line 37 [2021-06-14T08:34:53.015Z] at Microsoft.Azure.Functions.Worker.OutputBindings.OutputBindingsMiddleware.Invoke(FunctionContext context, FunctionExecutionDelegate next) in D:\a\1\s\src\DotNetWorker.Core\OutputBindings\OutputBindingsMiddleware.cs:line 13 [2021-06-14T08:34:53.015Z] at Microsoft.Azure.Functions.Worker.GrpcWorker.InvocationRequestHandlerAsync(InvocationRequest request, IFunctionsApplication application, IInvocationFeaturesFactory invocationFeaturesFactory, ObjectSerializer serializer, IOutputBindingsInfoProvider outputBindingsInfoProvider) in D:\a\1\s\src\DotNetWorker.Grpc\GrpcWorker.cs:line 166 [2021-06-14T08:34:53.015Z] Stack: at Microsoft.Azure.Functions.Worker.Context.Features.DefaultModelBindingFeature.BindFunctionInput(FunctionContext context) in D:\a\1\s\src\DotNetWorker.Core\Context\Features\DefaultModelBindingFeature.cs:line 70 [2021-06-14T08:34:53.015Z] at Microsoft.Azure.Functions.Worker.Invocation.DefaultFunctionExecutor.ExecuteAsync(FunctionContext context) in D:\a\1\s\src\DotNetWorker.Core\Invocation\DefaultFunctionExecutor.cs:line 37 [2021-06-14T08:34:53.015Z] at Microsoft.Azure.Functions.Worker.OutputBindings.OutputBindingsMiddleware.Invoke(FunctionContext context, FunctionExecutionDelegate next) in D:\a\1\s\src\DotNetWorker.Core\OutputBindings\OutputBindingsMiddleware.cs:line 13 [2021-06-14T08:34:53.015Z] at Microsoft.Azure.Functions.Worker.GrpcWorker.InvocationRequestHandlerAsync(InvocationRequest request, IFunctionsApplication application, IInvocationFeaturesFactory invocationFeaturesFactory, ObjectSerializer serializer, IOutputBindingsInfoProvider outputBindingsInfoProvider) in D:\a\1\s\src\DotNetWorker.Grpc\GrpcWorker.cs:line 166.
...ANSWER
Answered 2021-Jun-14 at 11:10Use the Microsoft.AspNetCore.WebUtilities.QueryHelpers to parse the HttpRequestData.Uri to get the query parameter.
QUESTION
I have a spring boot application that would run on a local server (not on a google cloud server). I plan to use a service account to allow the application to use Google Cloud Storage and Logging. I created a service account and an api key and downloaded the json file which looks like this:
...ANSWER
Answered 2021-Jun-14 at 08:03I used systemd, it allows me to set any environment variable on service start.
- place the executable jar and the application.properties in a folder, like
/opt/or/home// - sudo nano
/etc/systemd/system/.service - Content:
QUESTION
I am running a GitHub agent inside AKS cluster with Docker installed. I can run it successfully with VFS storage driver, however I want to use Overlay 2 because it's faster. I get the following message:
...ANSWER
Answered 2021-Jun-13 at 01:12overlay overlay 49G 20G 29G 41% /
QUESTION
I am trying to connect to Firestore from code running on GKE Container. Simple REST GET api is working fine, but when I access the Firestore from read/write, I am getting Missing or insufficient permissions.
...ANSWER
Answered 2021-Jun-12 at 12:26Looks like they key itself might not be correctly visible to the pod. I would start by getting into the pod with kubectl exec --stdin --tty -- /bin/bash and ensuring that the /var/key.json (per your config) is accessible and has the correct credentials.
The following would be a good way to mount the secret:
QUESTION
I installed a Kubernetes cluster of three nodes, the control node looked ok, when I tried to join the other two nodes the status for both of is: Not Ready
On control node:
...ANSWER
Answered 2021-Jun-11 at 20:41After seeing whole log line entry
QUESTION
I have bidirectional streaming async grpc client that use ClientAsyncReaderWriter for communication with server. RPC code looks like:
...ANSWER
Answered 2021-Jun-11 at 12:54Can I try to read if it no data available?
Yep, and it's going to be case more often than not. Read() will do nothing until data is available, and only then put its passed tag into the completion queue. (see below for details)
Is it blocking call?
Nope. Read() and Write() return immediately. However, you can only have one of each in flight at any given moment. If you try to send a second one before the previous has completed, it (the second one) will fail.
What is the proper way to async reading?
Each time a Read() is done, start a new one. For that, you need to be able to tell when a Read() is done. This is where tags come in!
When you call Read(&msg, tag), or Write(request, tag),you are telling grpc to put tag in the completion queue associated with that responder once that operation has completed. grpc doesn't care what the tag is, it just hands it off.
So the general strategy you will want to go for is:
- As soon as you are ready to start receiving messages:
- call
responder->Read()once with some tag that you will recognize as a "read done".
- call
- Whenever
cq_.Next()gives you back that tag, andok == true:- consume the message
- Queue up a new
responder->Read()with that same tag.
Obviously, you'll also want to do something similar for your calls to Write().
But since you still want to be able to lookup the handler instance from a given tag, you'll need a way to pack a reference to the handler as well as information about which operation is being finished in a single tag.
Completion queuesLookup the handler instance from a given tag? Why?
The true raison d'être of completion queues is unfortunately not evident from the examples. They allow multiple asynchronous rpcs to share the same thread. Unless your application only ever makes a single rpc call, the handling thread should not be associated with a specific responder. Instead, that thread should be a general-purpose worker that dispatches events to the correct handler based on the content of the tag.
The official examples tend to do that by using pointer to the handler object as the tag. That works when there's a specific sequence of events to expect since you can easily predict what a handler is reacting to. You often can't do that with async bidirectional streams, since any given completion event could be a Read() or a Write() finishing.
Here's a general outline of what I personally consider to be a clean way to go about all that:
QUESTION
1.I yarn add grpc-tools.
2.cmd command: protoc --js_out=import_style=commonjs,binary:./ --plugin=protoc-gen-grpc=./grpc_node_plugin.exe --grpc_out=./ UHDInterface.proto
3.Finally reported an error
UHDInterface.proto: is a proto3 file that contains optional fields, but code generator protoc-gen-grpc hasn't been updated to support optional fields in proto3. Please ask the owner of this code generator to support proto3 optional.--grpc_out
...ANSWER
Answered 2021-Mar-15 at 11:59proto3 doesn't support optional and required filed in message defination any more, just remove these field in UHDInterface.proto
You can reference why messge type remove 'required,optional'? for more detail.
QUESTION
Whenever I am trying to execute a transaction through NodeJS I am getting the error.
...ANSWER
Answered 2021-Feb-19 at 15:54Answering my question here. Based on @Gari Singh's answer above the certificate that you have to use in the "tlsCACerts" parameter in the connection.json file has to be created by combining the intermediate and root CA into a single file. The first block in the file should be the intermediate CA and the second block should be the root CA. This certificate chaining is required because the intermediate CA is signed by the root CA and the client should pass both so that they can be validated properly. Comprehensive explanation can be found here: https://www.thesslstore.com/blog/root-certificates-intermediate/
The final thing that I was missing because of which I was getting the error "Failed to evaluate transaction: Error: Committer must be connectable" was that I was passing 3 orderers in the "channels" section of the config and only passing one of their details in the "orderers" section of the config. Adding the ip and other details for the other 2 orderers took care of that issue.
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