evans
viper
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evans
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Understanding gRPC Concepts, Use Cases & Best Practices
Note: gRPC services can also be tested from CLI using tools like evans-cli. But for that reflection needs (if not enabled the path to the proto file is required) to be enabled in gRPC servers. This compare link shows the way to enable reflection and how to enter into evans-cli repl mode. Post entering repl mode of evans-cli, gRPC services can be tested from CLI itself and the process is described in evans-cli GitHub page.
- Evans: More expressive universal gRPC client
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Smart way to create gRPC CLI
Do you mean this one https://github.com/ktr0731/evans ?
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grpcurl-like tool for grpcweb
I use Evans, it supports gRPC and gRPC-web and also supports reflection protocol.
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Go and gRPC is just so intuitive. Here's a detailed full-stack flow with gRPC-Web, Go and React. Also, there is a medium story focused on explaining how such a setup might boost efficiency and the step-by-step implementation.
https://github.com/ktr0731/evans it's the best cli tool I've ever used
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Postman-powered testing of Akka Serverless gRPC APIs
Over the holidays, 2021, Postman gifted a fine upgrade to its users: beta support for the gRPC protocol in its API platform. As a Product Manager for Lightbend and helping out on its new gRPC native PaaS for building and running APIs and microservices, I was excited, to say the least. In another, recent blog post, I mentioned my desire to leverage UI test-and-try tools for APIs (my time in the REST API world of Mashery and PubNub was the source of such desire). In that same post though, I noted the lack of several important gRPC features, like server reflection and more robust import capabilities, as blockers; hence, my deep dive, in that post, into the CLI tool, Evans.
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gRPC test-and-try with Akka Serverless and Evans
And who am I kidding? I'm a CLI-type person. Which is why I was super excited to stumble about Evans. Within minutes, I had gone from installation to trying out TLS-secured APIs and microservices running in the cloud on Lightbend's new serverless offering.
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Set Up Grpc Web Server With AWS
If everything is set up correctly, you should now be able to use evans to access your web server at the load balancer url or even the url for your ec2 instance directly e.g.
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Setting Up a gRPC Protobuf Server With Tonic
After running the server with cargo run, I needed a way to test that the server works. I had heard of an interesting tool called evans, so I decided to use this. It took me a while to figure out the right parameters to query the server, especially because tonic doesn't seem to support gRPC reflection right now, and there are few examples out there.
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Go, RabbitMQ and gRPC Clean Architecture microservice 💫👋
For testing gRPC we can use evans and need add reflection:
viper
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Proxy Server in Go
The code uses Viper to load configuration files in the application.
- API completa em Golang - Parte 2
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What 3rd-party libraries do you use often/all the time?
github.com/spf13/viper
- API completa em Golang - Parte 1
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Building RESTful API with Hexagonal Architecture in Go
Instead of directly accessing environment variables with os.Getenv(), integrating a configuration handler like viper might make it maintainable.
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What is the most common approach to configure a backend app?
I guess most people are using https://github.com/spf13/viper but I don't know if I should read everything from
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Could I get a code review?
Use Viper for config file or environmental variable configuration -- it's going to save you a whole lot of time.
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Which packages do you recommend for building cli tools?
Cobra and Viper.
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Library for Python similar to Go's Viper / 12 Factor
I've mostly been using https://github.com/spf13/viper of late for my go projects. It supports the standard config formats, (json, yaml, toml etc) and lets you override any value with a ENV value.
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Two ways to provide configuration: command-line, yaml file.
Not only that, the "unmarshall to struct" method doesn't work at all for environment variables. https://github.com/spf13/viper/issues/188
What are some alternatives?
grpc-web - gRPC for Web Clients
godotenv - A Go port of Ruby's dotenv library (Loads environment variables from .env files)
grpcui - An interactive web UI for gRPC, along the lines of postman
envconfig - Small library to read your configuration from environment variables
bloomrpc - Former GUI client for gRPC services. No longer maintained.
koanf - Simple, extremely lightweight, extensible, configuration management library for Go. Support for JSON, TOML, YAML, env, command line, file, S3 etc. Alternative to viper.
grpcurl - Like cURL, but for gRPC: Command-line tool for interacting with gRPC servers
cleanenv - ✨Clean and minimalistic environment configuration reader for Golang
Go-gRPC-RabbitMQ-microservice - Go gRPC RabbitMQ email microservice
kelseyhightower/envconfig - Golang library for managing configuration data from environment variables
tonic - A native gRPC client & server implementation with async/await support.
mapstructure - Go library for decoding generic map values into native Go structures and vice versa.