hunga1 / rest

SendGrid's Golang HTTP Client for calling APIs

Quickly and easily access any RESTful or RESTful-like API.

If you are looking for the SendGrid API client library, please see this repo.

Announcements

The default branch name for this repository has been changed to main as of 07/27/2020.

All updates to this library is documented in our CHANGELOG.

Table of Contents

• Installation
• Quick Start
• Usage
• How to Contribute
• About
• License

Installation

Supported Versions

• Go version 1.14, 1.15 or 1.16

Install Package

go get github.com/sendgrid/rest

Setup Environment Variables

Initial Setup

cp .env_sample .env

Environment Variable

Update the development environment with your SENDGRID_API_KEY, for example:

echo "export SENDGRID_API_KEY='YOUR_API_KEY'" > sendgrid.env
echo "sendgrid.env" >> .gitignore
source ./sendgrid.env

With Docker

A Docker image has been created to allow you to get started with rest right away.

docker-compose up -d --build

# Ensure the container is running with 'docker ps'
docker ps
CONTAINER ID        IMAGE               COMMAND               CREATED              STATUS              PORTS               NAMES
40c8d984a620        rest_go             "tail -f /dev/null"   About a minute ago   Up About a minute                       rest_go_1

With the container running, you can execute your local go scripts using the following:

# docker exec <container_name> <go command>
docker exec rest_go_1 go run docker/example.go
200
{
  "args": {},
  "headers": {
    "Accept-Encoding": "gzip",
    "Connection": "close",
    "Host": "httpbin.org",
    "User-Agent": "Go-http-client/1.1"
  },
  "origin": "86.180.177.202",
  "url": "https://httpbin.org/get"
}

map[Access-Control-Allow-Origin:[*] Access-Control-Allow-Credentials:[true] Via:[1.1 vegur] Connection:[keep-alive] Server:[gunicorn/19.9.0] Date:[Tue, 02 Oct 2018 18:20:43 GMT] Content-Type:[application/json] Content-Length:[233]]

# You can install libraries too, using the same command
# NOTE: Any libraries installed will be removed when the container is stopped.
docker exec rest_go_1 go get github.com/uniplaces/carbon

Your go files will be executed relative to the root of this directory. So in the example above, to execute the example.go file within the docker directory, we run docker exec rest_go_1 go run docker/example.go. If this file was in the root of this repository (next to README.exe, rest.go etc.), you would run docker exec rest_go_1 go run my_go_script.go

Quick Start

GET /your/api/{param}/call

package main

import "github.com/sendgrid/rest"
import "fmt"

func main() {
	const host = "https://api.example.com"
	param := "myparam"
	endpoint := "/your/api/" + param + "/call"
	baseURL := host + endpoint
	method := rest.Get
	request := rest.Request{
		Method:  method,
		BaseURL: baseURL,
	}
	response, err := rest.Send(request)
	if err != nil {
		fmt.Println(err)
	} else {
		fmt.Println(response.StatusCode)
		fmt.Println(response.Body)
		fmt.Println(response.Headers)
	}
}

POST /your/api/{param}/call with headers, query parameters and a request body.

package main

import "github.com/sendgrid/rest"
import "fmt"

func main() {
	const host = "https://api.example.com"
	param := "myparam"
	endpoint := "/your/api/" + param + "/call"
	baseURL := host + endpoint
	Headers := make(map[string]string)
	key := os.Getenv("API_KEY")
	Headers["Authorization"] = "Bearer " + key
	Headers["X-Test"] = "Test"
	var Body = []byte(`{"some": 0, "awesome": 1, "data": 3}`)
	queryParams := make(map[string]string)
	queryParams["hello"] = "0"
	queryParams["world"] = "1"
	method := rest.Post
	request = rest.Request{
		Method:      method,
		BaseURL:     baseURL,
		Headers:     Headers,
		QueryParams: queryParams,
		Body:        Body,
	}
	response, err := rest.Send(request)
	if err != nil {
		fmt.Println(err)
	} else {
		fmt.Println(response.StatusCode)
		fmt.Println(response.Body)
		fmt.Println(response.Headers)
	}
}

Usage

• Usage Examples

How to Contribute

We encourage contribution to our projects, please see our CONTRIBUTING guide for details.

Quick links:

• Feature Request
• Bug Reports
• Improvements to the Codebase
• Code Reviews

About

rest is maintained and funded by Twilio SendGrid, Inc. The names and logos for rest are trademarks of Twilio SendGrid, Inc.

If you need help installing or using the library, please check the Twilio SendGrid Support Help Center.

If you've instead found a bug in the library or would like new features added, go ahead and open issues or pull requests against this repo!

License

The MIT License (MIT)