- #DO I NEED HOMEBREW TO INSTALL POSTMAN FOR MAC HOW TO#
- #DO I NEED HOMEBREW TO INSTALL POSTMAN FOR MAC CODE#
If you use gRPC throughout your stack, you may already be defining these operations using protocol buffers and gRPC interfaces. Once the interface is defined, you can then create the implementation in your server. Whether you are providing tools that let you tweak customer configuration settings or view low-level storage details in your data model, the basic operation is often easily described as an RPC: just model the needed input parameters as a request and the output results as a response. When adding tools for system operators (like an on-call engineer or customer support staff), each task typically has some needed input parameters and some outputs to indicate the result of the task. GRPCui can accelerate your development by providing basic UIs for admin operations in your RPC backend servers. This could be handled with HTTP middleware in the Go container itself or by putting the server behind an authenticating proxy that can enforce access control policies and prevent unauthorized access to the gRPCui. Since your gRPC server may support sensitive internal operations, it is important that the HTTP server that exposes the gRPCui has adequate access controls and restrictions in place. (A larger, more complete example can be found in this gist.) This will also open a browser tab pointed at that URL: Let's take a look at, an example gRPC server hosted by FullStory that provides a simple gRPC interface for : This makes exploring the server’s RPC endpoints effortless. And gRPCui provides the same capability, but in a web-based GUI that allows you to explore the RPC endpoints via drop-down lists and HTML forms.Īlso like gRPCurl, the gRPCui tool works best when servers support Server Reflection. With gRPCurl, you can issue several commands to list the exposed interfaces and then describe the various elements of the request and response message schemas. Like gRPCurl, gRPCui lets you explore a running server’s RPC interfaces. In the final two sections, we’ll look at some neat ways to put it to use: high-leverage things you can do when a tool like gRPCui exists.
#DO I NEED HOMEBREW TO INSTALL POSTMAN FOR MAC HOW TO#
In the next two sections we’ll review a couple of core use cases for gRPCui and provide more details on what it is and how to use it. Postman consumes OpenAPI (formerly known as Swagger) spec files, which describe the API, not unlike how protocol buffer source files describe a gRPC API. Outside of protocol-buffer-based RPC systems, gRPCui can be compared to tools like Postman, which provides a web UI for exploring and interacting with REST APIs.
Running “stubby web” would start a web server, which provided a web UI that was part of the inspiration for gRPCui. Stubby was a closed source precursor to gRPC.
And at Google, a protocol-buffer-based RPC system named Stubby was ubiquitous. Java and Go Sake RPC servers embedded a web UI for Sake, very similar to what gRPCui provides.
At Square, some of us had a hand in building a bespoke protocol-buffer-based RPC system named Sake RPC. The idea for gRPCui comes from similar tools that some of us worked with in past lives at Square and Google.
#DO I NEED HOMEBREW TO INSTALL POSTMAN FOR MAC CODE#
The gRPCui Go code uses that library to send RPCs so gRPCui is actually powered by gRPCurl. GRPCurl includes a Go package that provides the ability to easily perform dynamic dispatch of RPCs. With the Go packages that comprise gRPCui, you can easily embed a web UI into any Go gRPC server.
On navigating a browser to that just-started web server, you will find a web UI that allows you to explore the gRPC server’s RPC interfaces, build requests via a web form, and then send requests and invoke RPCs. When you invoke grpcui and point it at a gRPC server, it will dial that gRPC server and then start up its own web server. It is a command-line tool (written in Go). Much like its predecessor, gRPCurl, it is two things simultaneously:
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