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742 lines
27 KiB
742 lines
27 KiB
5 years ago
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<p align="center">
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<h1 align="center">Resty</h1>
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<p align="center">Simple HTTP and REST client library for Go (inspired by Ruby rest-client)</p>
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<p align="center"><a href="#features">Features</a> section describes in detail about Resty capabilities</p>
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</p>
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<p align="center">
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<p align="center"><a href="https://travis-ci.org/go-resty/resty"><img src="https://travis-ci.org/go-resty/resty.svg?branch=master" alt="Build Status"></a> <a href="https://codecov.io/gh/go-resty/resty/branch/master"><img src="https://codecov.io/gh/go-resty/resty/branch/master/graph/badge.svg" alt="Code Coverage"></a> <a href="https://goreportcard.com/report/go-resty/resty"><img src="https://goreportcard.com/badge/go-resty/resty" alt="Go Report Card"></a> <a href="https://github.com/go-resty/resty/releases/latest"><img src="https://img.shields.io/badge/version-1.12.0-blue.svg" alt="Release Version"></a> <a href="https://godoc.org/gopkg.in/resty.v1"><img src="https://godoc.org/gopkg.in/resty.v1?status.svg" alt="GoDoc"></a> <a href="LICENSE"><img src="https://img.shields.io/github/license/go-resty/resty.svg" alt="License"></a></p>
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</p>
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<p align="center">
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<h4 align="center">Resty Communication Channels</h4>
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<p align="center"><a href="https://gitter.im/go_resty/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge"><img src="https://badges.gitter.im/go_resty/community.svg" alt="Chat on Gitter - Resty Community"></a> <a href="https://twitter.com/go_resty"><img src="https://img.shields.io/badge/twitter-@go_resty-55acee.svg" alt="Twitter @go_resty"></a></p>
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</p>
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## News
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* Resty `v2` development is in-progress :smile:
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* v1.12.0 [released](https://github.com/go-resty/resty/releases/tag/v1.12.0) and tagged on Feb 27, 2019.
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* v1.11.0 [released](https://github.com/go-resty/resty/releases/tag/v1.11.0) and tagged on Jan 06, 2019.
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* v1.10.3 [released](https://github.com/go-resty/resty/releases/tag/v1.10.3) and tagged on Dec 04, 2018.
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* v1.0 released and tagged on Sep 25, 2017. - Resty's first version was released on Sep 15, 2015 then it grew gradually as a very handy and helpful library. Its been a two years since first release. I'm very thankful to Resty users and its [contributors](https://github.com/go-resty/resty/graphs/contributors).
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## Features
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* GET, POST, PUT, DELETE, HEAD, PATCH, OPTIONS, etc.
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* Simple and chainable methods for settings and request
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* Request Body can be `string`, `[]byte`, `struct`, `map`, `slice` and `io.Reader` too
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* Auto detects `Content-Type`
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* Buffer less processing for `io.Reader`
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* [Response](https://godoc.org/gopkg.in/resty.v1#Response) object gives you more possibility
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* Access as `[]byte` array - `response.Body()` OR Access as `string` - `response.String()`
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* Know your `response.Time()` and when we `response.ReceivedAt()`
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* Automatic marshal and unmarshal for `JSON` and `XML` content type
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* Default is `JSON`, if you supply `struct/map` without header `Content-Type`
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* For auto-unmarshal, refer to -
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- Success scenario [Request.SetResult()](https://godoc.org/gopkg.in/resty.v1#Request.SetResult) and [Response.Result()](https://godoc.org/gopkg.in/resty.v1#Response.Result).
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- Error scenario [Request.SetError()](https://godoc.org/gopkg.in/resty.v1#Request.SetError) and [Response.Error()](https://godoc.org/gopkg.in/resty.v1#Response.Error).
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- Supports [RFC7807](https://tools.ietf.org/html/rfc7807) - `application/problem+json` & `application/problem+xml`
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* Easy to upload one or more file(s) via `multipart/form-data`
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* Auto detects file content type
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* Request URL [Path Params (aka URI Params)](https://godoc.org/gopkg.in/resty.v1#Request.SetPathParams)
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* Backoff Retry Mechanism with retry condition function [reference](retry_test.go)
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* resty client HTTP & REST [Request](https://godoc.org/gopkg.in/resty.v1#Client.OnBeforeRequest) and [Response](https://godoc.org/gopkg.in/resty.v1#Client.OnAfterResponse) middlewares
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* `Request.SetContext` supported `go1.7` and above
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* Authorization option of `BasicAuth` and `Bearer` token
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* Set request `ContentLength` value for all request or particular request
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* Choose between HTTP and REST mode. Default is `REST`
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* `HTTP` - default up to 10 redirects and no automatic response unmarshal
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* `REST` - defaults to no redirects and automatic response marshal/unmarshal for `JSON` & `XML`
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* Custom [Root Certificates](https://godoc.org/gopkg.in/resty.v1#Client.SetRootCertificate) and Client [Certificates](https://godoc.org/gopkg.in/resty.v1#Client.SetCertificates)
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* Download/Save HTTP response directly into File, like `curl -o` flag. See [SetOutputDirectory](https://godoc.org/gopkg.in/resty.v1#Client.SetOutputDirectory) & [SetOutput](https://godoc.org/gopkg.in/resty.v1#Request.SetOutput).
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* Cookies for your request and CookieJar support
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* SRV Record based request instead of Host URL
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* Client settings like `Timeout`, `RedirectPolicy`, `Proxy`, `TLSClientConfig`, `Transport`, etc.
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* Optionally allows GET request with payload, see [SetAllowGetMethodPayload](https://godoc.org/gopkg.in/resty.v1#Client.SetAllowGetMethodPayload)
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* Supports registering external JSON library into resty, see [how to use](https://github.com/go-resty/resty/issues/76#issuecomment-314015250)
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* Exposes Response reader without reading response (no auto-unmarshaling) if need be, see [how to use](https://github.com/go-resty/resty/issues/87#issuecomment-322100604)
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* Option to specify expected `Content-Type` when response `Content-Type` header missing. Refer to [#92](https://github.com/go-resty/resty/issues/92)
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* Resty design
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* Have client level settings & options and also override at Request level if you want to
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* Request and Response middlewares
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* Create Multiple clients if you want to `resty.New()`
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* Supports `http.RoundTripper` implementation, see [SetTransport](https://godoc.org/gopkg.in/resty.v1#Client.SetTransport)
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* goroutine concurrent safe
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* REST and HTTP modes
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* Debug mode - clean and informative logging presentation
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* Gzip - Go does it automatically also resty has fallback handling too
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* Works fine with `HTTP/2` and `HTTP/1.1`
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* [Bazel support](#bazel-support)
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* Easily mock resty for testing, [for e.g.](#mocking-http-requests-using-httpmock-library)
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* Well tested client library
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Resty works with `go1.3` and above.
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### Included Batteries
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* Redirect Policies - see [how to use](#redirect-policy)
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* NoRedirectPolicy
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* FlexibleRedirectPolicy
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* DomainCheckRedirectPolicy
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* etc. [more info](redirect.go)
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* Retry Mechanism [how to use](#retries)
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* Backoff Retry
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* Conditional Retry
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* SRV Record based request instead of Host URL [how to use](resty_test.go#L1412)
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* etc (upcoming - throw your idea's [here](https://github.com/go-resty/resty/issues)).
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## Installation
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#### Stable Version - Production Ready
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Please refer section [Versioning](#versioning) for detailed info.
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##### go.mod
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```bash
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require gopkg.in/resty.v1 v1.12.0
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```
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##### go get
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```bash
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go get -u gopkg.in/resty.v1
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```
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#### Heads up for upcoming Resty v2
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Resty v2 release will be moving away from `gopkg.in` proxy versioning. It will completely follow and adpating Go Mod versioning recommendation. For e.g.: module definition would be `module github.com/go-resty/resty/v2`.
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## It might be beneficial for your project :smile:
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Resty author also published following projects for Go Community.
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* [aah framework](https://aahframework.org) - A secure, flexible, rapid Go web framework.
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* [THUMBAI](https://thumbai.app), [Source Code](https://github.com/thumbai/thumbai) - Go Mod Repository, Go Vanity Service and Simple Proxy Server.
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* [go-model](https://github.com/jeevatkm/go-model) - Robust & Easy to use model mapper and utility methods for Go `struct`.
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## Usage
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The following samples will assist you to become as comfortable as possible with resty library. Resty comes with ready to use DefaultClient.
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Import resty into your code and refer it as `resty`.
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```go
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import "gopkg.in/resty.v1"
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```
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#### Simple GET
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```go
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// GET request
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resp, err := resty.R().Get("http://httpbin.org/get")
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// explore response object
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fmt.Printf("\nError: %v", err)
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fmt.Printf("\nResponse Status Code: %v", resp.StatusCode())
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fmt.Printf("\nResponse Status: %v", resp.Status())
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fmt.Printf("\nResponse Time: %v", resp.Time())
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fmt.Printf("\nResponse Received At: %v", resp.ReceivedAt())
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fmt.Printf("\nResponse Body: %v", resp) // or resp.String() or string(resp.Body())
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// more...
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/* Output
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Error: <nil>
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Response Status Code: 200
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Response Status: 200 OK
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Response Time: 160.1151ms
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Response Received At: 2018-10-16 16:28:34.8595663 -0700 PDT m=+0.166119401
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Response Body: {
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"args": {},
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"headers": {
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"Accept-Encoding": "gzip",
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"Connection": "close",
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"Host": "httpbin.org",
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"User-Agent": "go-resty/1.10.0 (https://github.com/go-resty/resty)"
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},
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"origin": "0.0.0.0",
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"url": "http://httpbin.org/get"
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}
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*/
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```
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#### Enhanced GET
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```go
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resp, err := resty.R().
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SetQueryParams(map[string]string{
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"page_no": "1",
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"limit": "20",
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"sort":"name",
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"order": "asc",
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"random":strconv.FormatInt(time.Now().Unix(), 10),
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}).
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SetHeader("Accept", "application/json").
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SetAuthToken("BC594900518B4F7EAC75BD37F019E08FBC594900518B4F7EAC75BD37F019E08F").
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Get("/search_result")
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// Sample of using Request.SetQueryString method
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resp, err := resty.R().
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SetQueryString("productId=232&template=fresh-sample&cat=resty&source=google&kw=buy a lot more").
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SetHeader("Accept", "application/json").
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SetAuthToken("BC594900518B4F7EAC75BD37F019E08FBC594900518B4F7EAC75BD37F019E08F").
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Get("/show_product")
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```
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#### Various POST method combinations
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```go
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// POST JSON string
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// No need to set content type, if you have client level setting
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resp, err := resty.R().
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SetHeader("Content-Type", "application/json").
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SetBody(`{"username":"testuser", "password":"testpass"}`).
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SetResult(&AuthSuccess{}). // or SetResult(AuthSuccess{}).
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Post("https://myapp.com/login")
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// POST []byte array
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// No need to set content type, if you have client level setting
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resp, err := resty.R().
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SetHeader("Content-Type", "application/json").
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SetBody([]byte(`{"username":"testuser", "password":"testpass"}`)).
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SetResult(&AuthSuccess{}). // or SetResult(AuthSuccess{}).
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Post("https://myapp.com/login")
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// POST Struct, default is JSON content type. No need to set one
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resp, err := resty.R().
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SetBody(User{Username: "testuser", Password: "testpass"}).
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SetResult(&AuthSuccess{}). // or SetResult(AuthSuccess{}).
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SetError(&AuthError{}). // or SetError(AuthError{}).
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Post("https://myapp.com/login")
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// POST Map, default is JSON content type. No need to set one
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resp, err := resty.R().
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SetBody(map[string]interface{}{"username": "testuser", "password": "testpass"}).
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SetResult(&AuthSuccess{}). // or SetResult(AuthSuccess{}).
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SetError(&AuthError{}). // or SetError(AuthError{}).
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Post("https://myapp.com/login")
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// POST of raw bytes for file upload. For example: upload file to Dropbox
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fileBytes, _ := ioutil.ReadFile("/Users/jeeva/mydocument.pdf")
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// See we are not setting content-type header, since go-resty automatically detects Content-Type for you
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resp, err := resty.R().
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SetBody(fileBytes).
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SetContentLength(true). // Dropbox expects this value
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SetAuthToken("<your-auth-token>").
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SetError(&DropboxError{}). // or SetError(DropboxError{}).
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Post("https://content.dropboxapi.com/1/files_put/auto/resty/mydocument.pdf") // for upload Dropbox supports PUT too
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// Note: resty detects Content-Type for request body/payload if content type header is not set.
|
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// * For struct and map data type defaults to 'application/json'
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// * Fallback is plain text content type
|
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```
|
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|
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#### Sample PUT
|
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|
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You can use various combinations of `PUT` method call like demonstrated for `POST`.
|
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```go
|
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// Note: This is one sample of PUT method usage, refer POST for more combination
|
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// Request goes as JSON content type
|
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// No need to set auth token, error, if you have client level settings
|
||
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resp, err := resty.R().
|
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SetBody(Article{
|
||
|
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Title: "go-resty",
|
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|
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Content: "This is my article content, oh ya!",
|
||
|
|
Author: "Jeevanandam M",
|
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|
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Tags: []string{"article", "sample", "resty"},
|
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}).
|
||
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SetAuthToken("C6A79608-782F-4ED0-A11D-BD82FAD829CD").
|
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SetError(&Error{}). // or SetError(Error{}).
|
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|
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Put("https://myapp.com/article/1234")
|
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```
|
||
|
|
|
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|
|
#### Sample PATCH
|
||
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|
|
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|
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You can use various combinations of `PATCH` method call like demonstrated for `POST`.
|
||
|
|
|
||
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```go
|
||
|
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// Note: This is one sample of PUT method usage, refer POST for more combination
|
||
|
|
|
||
|
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// Request goes as JSON content type
|
||
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// No need to set auth token, error, if you have client level settings
|
||
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resp, err := resty.R().
|
||
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SetBody(Article{
|
||
|
|
Tags: []string{"new tag1", "new tag2"},
|
||
|
|
}).
|
||
|
|
SetAuthToken("C6A79608-782F-4ED0-A11D-BD82FAD829CD").
|
||
|
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SetError(&Error{}). // or SetError(Error{}).
|
||
|
|
Patch("https://myapp.com/articles/1234")
|
||
|
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```
|
||
|
|
|
||
|
|
#### Sample DELETE, HEAD, OPTIONS
|
||
|
|
|
||
|
|
```go
|
||
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// DELETE a article
|
||
|
|
// No need to set auth token, error, if you have client level settings
|
||
|
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resp, err := resty.R().
|
||
|
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SetAuthToken("C6A79608-782F-4ED0-A11D-BD82FAD829CD").
|
||
|
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SetError(&Error{}). // or SetError(Error{}).
|
||
|
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Delete("https://myapp.com/articles/1234")
|
||
|
|
|
||
|
|
// DELETE a articles with payload/body as a JSON string
|
||
|
|
// No need to set auth token, error, if you have client level settings
|
||
|
|
resp, err := resty.R().
|
||
|
|
SetAuthToken("C6A79608-782F-4ED0-A11D-BD82FAD829CD").
|
||
|
|
SetError(&Error{}). // or SetError(Error{}).
|
||
|
|
SetHeader("Content-Type", "application/json").
|
||
|
|
SetBody(`{article_ids: [1002, 1006, 1007, 87683, 45432] }`).
|
||
|
|
Delete("https://myapp.com/articles")
|
||
|
|
|
||
|
|
// HEAD of resource
|
||
|
|
// No need to set auth token, if you have client level settings
|
||
|
|
resp, err := resty.R().
|
||
|
|
SetAuthToken("C6A79608-782F-4ED0-A11D-BD82FAD829CD").
|
||
|
|
Head("https://myapp.com/videos/hi-res-video")
|
||
|
|
|
||
|
|
// OPTIONS of resource
|
||
|
|
// No need to set auth token, if you have client level settings
|
||
|
|
resp, err := resty.R().
|
||
|
|
SetAuthToken("C6A79608-782F-4ED0-A11D-BD82FAD829CD").
|
||
|
|
Options("https://myapp.com/servers/nyc-dc-01")
|
||
|
|
```
|
||
|
|
|
||
|
|
### Multipart File(s) upload
|
||
|
|
|
||
|
|
#### Using io.Reader
|
||
|
|
|
||
|
|
```go
|
||
|
|
profileImgBytes, _ := ioutil.ReadFile("/Users/jeeva/test-img.png")
|
||
|
|
notesBytes, _ := ioutil.ReadFile("/Users/jeeva/text-file.txt")
|
||
|
|
|
||
|
|
resp, err := resty.R().
|
||
|
|
SetFileReader("profile_img", "test-img.png", bytes.NewReader(profileImgBytes)).
|
||
|
|
SetFileReader("notes", "text-file.txt", bytes.NewReader(notesBytes)).
|
||
|
|
SetFormData(map[string]string{
|
||
|
|
"first_name": "Jeevanandam",
|
||
|
|
"last_name": "M",
|
||
|
|
}).
|
||
|
|
Post("http://myapp.com/upload")
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Using File directly from Path
|
||
|
|
|
||
|
|
```go
|
||
|
|
// Single file scenario
|
||
|
|
resp, err := resty.R().
|
||
|
|
SetFile("profile_img", "/Users/jeeva/test-img.png").
|
||
|
|
Post("http://myapp.com/upload")
|
||
|
|
|
||
|
|
// Multiple files scenario
|
||
|
|
resp, err := resty.R().
|
||
|
|
SetFiles(map[string]string{
|
||
|
|
"profile_img": "/Users/jeeva/test-img.png",
|
||
|
|
"notes": "/Users/jeeva/text-file.txt",
|
||
|
|
}).
|
||
|
|
Post("http://myapp.com/upload")
|
||
|
|
|
||
|
|
// Multipart of form fields and files
|
||
|
|
resp, err := resty.R().
|
||
|
|
SetFiles(map[string]string{
|
||
|
|
"profile_img": "/Users/jeeva/test-img.png",
|
||
|
|
"notes": "/Users/jeeva/text-file.txt",
|
||
|
|
}).
|
||
|
|
SetFormData(map[string]string{
|
||
|
|
"first_name": "Jeevanandam",
|
||
|
|
"last_name": "M",
|
||
|
|
"zip_code": "00001",
|
||
|
|
"city": "my city",
|
||
|
|
"access_token": "C6A79608-782F-4ED0-A11D-BD82FAD829CD",
|
||
|
|
}).
|
||
|
|
Post("http://myapp.com/profile")
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Sample Form submission
|
||
|
|
|
||
|
|
```go
|
||
|
|
// just mentioning about POST as an example with simple flow
|
||
|
|
// User Login
|
||
|
|
resp, err := resty.R().
|
||
|
|
SetFormData(map[string]string{
|
||
|
|
"username": "jeeva",
|
||
|
|
"password": "mypass",
|
||
|
|
}).
|
||
|
|
Post("http://myapp.com/login")
|
||
|
|
|
||
|
|
// Followed by profile update
|
||
|
|
resp, err := resty.R().
|
||
|
|
SetFormData(map[string]string{
|
||
|
|
"first_name": "Jeevanandam",
|
||
|
|
"last_name": "M",
|
||
|
|
"zip_code": "00001",
|
||
|
|
"city": "new city update",
|
||
|
|
}).
|
||
|
|
Post("http://myapp.com/profile")
|
||
|
|
|
||
|
|
// Multi value form data
|
||
|
|
criteria := url.Values{
|
||
|
|
"search_criteria": []string{"book", "glass", "pencil"},
|
||
|
|
}
|
||
|
|
resp, err := resty.R().
|
||
|
|
SetMultiValueFormData(criteria).
|
||
|
|
Post("http://myapp.com/search")
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Save HTTP Response into File
|
||
|
|
|
||
|
|
```go
|
||
|
|
// Setting output directory path, If directory not exists then resty creates one!
|
||
|
|
// This is optional one, if you're planning using absoule path in
|
||
|
|
// `Request.SetOutput` and can used together.
|
||
|
|
resty.SetOutputDirectory("/Users/jeeva/Downloads")
|
||
|
|
|
||
|
|
// HTTP response gets saved into file, similar to curl -o flag
|
||
|
|
_, err := resty.R().
|
||
|
|
SetOutput("plugin/ReplyWithHeader-v5.1-beta.zip").
|
||
|
|
Get("http://bit.ly/1LouEKr")
|
||
|
|
|
||
|
|
// OR using absolute path
|
||
|
|
// Note: output directory path is not used for absoulte path
|
||
|
|
_, err := resty.R().
|
||
|
|
SetOutput("/MyDownloads/plugin/ReplyWithHeader-v5.1-beta.zip").
|
||
|
|
Get("http://bit.ly/1LouEKr")
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Request URL Path Params
|
||
|
|
|
||
|
|
Resty provides easy to use dynamic request URL path params. Params can be set at client and request level. Client level params value can be overridden at request level.
|
||
|
|
|
||
|
|
```go
|
||
|
|
resty.R().SetPathParams(map[string]string{
|
||
|
|
"userId": "sample@sample.com",
|
||
|
|
"subAccountId": "100002",
|
||
|
|
}).
|
||
|
|
Get("/v1/users/{userId}/{subAccountId}/details")
|
||
|
|
|
||
|
|
// Result:
|
||
|
|
// Composed URL - /v1/users/sample@sample.com/100002/details
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Request and Response Middleware
|
||
|
|
|
||
|
|
Resty provides middleware ability to manipulate for Request and Response. It is more flexible than callback approach.
|
||
|
|
|
||
|
|
```go
|
||
|
|
// Registering Request Middleware
|
||
|
|
resty.OnBeforeRequest(func(c *resty.Client, req *resty.Request) error {
|
||
|
|
// Now you have access to Client and current Request object
|
||
|
|
// manipulate it as per your need
|
||
|
|
|
||
|
|
return nil // if its success otherwise return error
|
||
|
|
})
|
||
|
|
|
||
|
|
// Registering Response Middleware
|
||
|
|
resty.OnAfterResponse(func(c *resty.Client, resp *resty.Response) error {
|
||
|
|
// Now you have access to Client and current Response object
|
||
|
|
// manipulate it as per your need
|
||
|
|
|
||
|
|
return nil // if its success otherwise return error
|
||
|
|
})
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Redirect Policy
|
||
|
|
|
||
|
|
Resty provides few ready to use redirect policy(s) also it supports multiple policies together.
|
||
|
|
|
||
|
|
```go
|
||
|
|
// Assign Client Redirect Policy. Create one as per you need
|
||
|
|
resty.SetRedirectPolicy(resty.FlexibleRedirectPolicy(15))
|
||
|
|
|
||
|
|
// Wanna multiple policies such as redirect count, domain name check, etc
|
||
|
|
resty.SetRedirectPolicy(resty.FlexibleRedirectPolicy(20),
|
||
|
|
resty.DomainCheckRedirectPolicy("host1.com", "host2.org", "host3.net"))
|
||
|
|
```
|
||
|
|
|
||
|
|
##### Custom Redirect Policy
|
||
|
|
|
||
|
|
Implement [RedirectPolicy](redirect.go#L20) interface and register it with resty client. Have a look [redirect.go](redirect.go) for more information.
|
||
|
|
|
||
|
|
```go
|
||
|
|
// Using raw func into resty.SetRedirectPolicy
|
||
|
|
resty.SetRedirectPolicy(resty.RedirectPolicyFunc(func(req *http.Request, via []*http.Request) error {
|
||
|
|
// Implement your logic here
|
||
|
|
|
||
|
|
// return nil for continue redirect otherwise return error to stop/prevent redirect
|
||
|
|
return nil
|
||
|
|
}))
|
||
|
|
|
||
|
|
//---------------------------------------------------
|
||
|
|
|
||
|
|
// Using struct create more flexible redirect policy
|
||
|
|
type CustomRedirectPolicy struct {
|
||
|
|
// variables goes here
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *CustomRedirectPolicy) Apply(req *http.Request, via []*http.Request) error {
|
||
|
|
// Implement your logic here
|
||
|
|
|
||
|
|
// return nil for continue redirect otherwise return error to stop/prevent redirect
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Registering in resty
|
||
|
|
resty.SetRedirectPolicy(CustomRedirectPolicy{/* initialize variables */})
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Custom Root Certificates and Client Certificates
|
||
|
|
|
||
|
|
```go
|
||
|
|
// Custom Root certificates, just supply .pem file.
|
||
|
|
// you can add one or more root certificates, its get appended
|
||
|
|
resty.SetRootCertificate("/path/to/root/pemFile1.pem")
|
||
|
|
resty.SetRootCertificate("/path/to/root/pemFile2.pem")
|
||
|
|
// ... and so on!
|
||
|
|
|
||
|
|
// Adding Client Certificates, you add one or more certificates
|
||
|
|
// Sample for creating certificate object
|
||
|
|
// Parsing public/private key pair from a pair of files. The files must contain PEM encoded data.
|
||
|
|
cert1, err := tls.LoadX509KeyPair("certs/client.pem", "certs/client.key")
|
||
|
|
if err != nil {
|
||
|
|
log.Fatalf("ERROR client certificate: %s", err)
|
||
|
|
}
|
||
|
|
// ...
|
||
|
|
|
||
|
|
// You add one or more certificates
|
||
|
|
resty.SetCertificates(cert1, cert2, cert3)
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Proxy Settings - Client as well as at Request Level
|
||
|
|
|
||
|
|
Default `Go` supports Proxy via environment variable `HTTP_PROXY`. Resty provides support via `SetProxy` & `RemoveProxy`.
|
||
|
|
Choose as per your need.
|
||
|
|
|
||
|
|
**Client Level Proxy** settings applied to all the request
|
||
|
|
|
||
|
|
```go
|
||
|
|
// Setting a Proxy URL and Port
|
||
|
|
resty.SetProxy("http://proxyserver:8888")
|
||
|
|
|
||
|
|
// Want to remove proxy setting
|
||
|
|
resty.RemoveProxy()
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Retries
|
||
|
|
|
||
|
|
Resty uses [backoff](http://www.awsarchitectureblog.com/2015/03/backoff.html)
|
||
|
|
to increase retry intervals after each attempt.
|
||
|
|
|
||
|
|
Usage example:
|
||
|
|
|
||
|
|
```go
|
||
|
|
// Retries are configured per client
|
||
|
|
resty.
|
||
|
|
// Set retry count to non zero to enable retries
|
||
|
|
SetRetryCount(3).
|
||
|
|
// You can override initial retry wait time.
|
||
|
|
// Default is 100 milliseconds.
|
||
|
|
SetRetryWaitTime(5 * time.Second).
|
||
|
|
// MaxWaitTime can be overridden as well.
|
||
|
|
// Default is 2 seconds.
|
||
|
|
SetRetryMaxWaitTime(20 * time.Second)
|
||
|
|
```
|
||
|
|
|
||
|
|
Above setup will result in resty retrying requests returned non nil error up to
|
||
|
|
3 times with delay increased after each attempt.
|
||
|
|
|
||
|
|
You can optionally provide client with custom retry conditions:
|
||
|
|
|
||
|
|
```go
|
||
|
|
resty.AddRetryCondition(
|
||
|
|
// Condition function will be provided with *resty.Response as a
|
||
|
|
// parameter. It is expected to return (bool, error) pair. Resty will retry
|
||
|
|
// in case condition returns true or non nil error.
|
||
|
|
func(r *resty.Response) (bool, error) {
|
||
|
|
return r.StatusCode() == http.StatusTooManyRequests, nil
|
||
|
|
},
|
||
|
|
)
|
||
|
|
```
|
||
|
|
|
||
|
|
Above example will make resty retry requests ended with `429 Too Many Requests`
|
||
|
|
status code.
|
||
|
|
|
||
|
|
Multiple retry conditions can be added.
|
||
|
|
|
||
|
|
It is also possible to use `resty.Backoff(...)` to get arbitrary retry scenarios
|
||
|
|
implemented. [Reference](retry_test.go).
|
||
|
|
|
||
|
|
#### Choose REST or HTTP mode
|
||
|
|
|
||
|
|
```go
|
||
|
|
// REST mode. This is Default.
|
||
|
|
resty.SetRESTMode()
|
||
|
|
|
||
|
|
// HTTP mode
|
||
|
|
resty.SetHTTPMode()
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Allow GET request with Payload
|
||
|
|
|
||
|
|
```go
|
||
|
|
// Allow GET request with Payload. This is disabled by default.
|
||
|
|
resty.SetAllowGetMethodPayload(true)
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Wanna Multiple Clients
|
||
|
|
|
||
|
|
```go
|
||
|
|
// Here you go!
|
||
|
|
// Client 1
|
||
|
|
client1 := resty.New()
|
||
|
|
client1.R().Get("http://httpbin.org")
|
||
|
|
// ...
|
||
|
|
|
||
|
|
// Client 2
|
||
|
|
client2 := resty.New()
|
||
|
|
client2.R().Head("http://httpbin.org")
|
||
|
|
// ...
|
||
|
|
|
||
|
|
// Bend it as per your need!!!
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Remaining Client Settings & its Options
|
||
|
|
|
||
|
|
```go
|
||
|
|
// Unique settings at Client level
|
||
|
|
//--------------------------------
|
||
|
|
// Enable debug mode
|
||
|
|
resty.SetDebug(true)
|
||
|
|
|
||
|
|
// Using you custom log writer
|
||
|
|
logFile, _ := os.OpenFile("/Users/jeeva/go-resty.log", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
|
||
|
|
resty.SetLogger(logFile)
|
||
|
|
|
||
|
|
// Assign Client TLSClientConfig
|
||
|
|
// One can set custom root-certificate. Refer: http://golang.org/pkg/crypto/tls/#example_Dial
|
||
|
|
resty.SetTLSClientConfig(&tls.Config{ RootCAs: roots })
|
||
|
|
|
||
|
|
// or One can disable security check (https)
|
||
|
|
resty.SetTLSClientConfig(&tls.Config{ InsecureSkipVerify: true })
|
||
|
|
|
||
|
|
// Set client timeout as per your need
|
||
|
|
resty.SetTimeout(1 * time.Minute)
|
||
|
|
|
||
|
|
|
||
|
|
// You can override all below settings and options at request level if you want to
|
||
|
|
//--------------------------------------------------------------------------------
|
||
|
|
// Host URL for all request. So you can use relative URL in the request
|
||
|
|
resty.SetHostURL("http://httpbin.org")
|
||
|
|
|
||
|
|
// Headers for all request
|
||
|
|
resty.SetHeader("Accept", "application/json")
|
||
|
|
resty.SetHeaders(map[string]string{
|
||
|
|
"Content-Type": "application/json",
|
||
|
|
"User-Agent": "My custom User Agent String",
|
||
|
|
})
|
||
|
|
|
||
|
|
// Cookies for all request
|
||
|
|
resty.SetCookie(&http.Cookie{
|
||
|
|
Name:"go-resty",
|
||
|
|
Value:"This is cookie value",
|
||
|
|
Path: "/",
|
||
|
|
Domain: "sample.com",
|
||
|
|
MaxAge: 36000,
|
||
|
|
HttpOnly: true,
|
||
|
|
Secure: false,
|
||
|
|
})
|
||
|
|
resty.SetCookies(cookies)
|
||
|
|
|
||
|
|
// URL query parameters for all request
|
||
|
|
resty.SetQueryParam("user_id", "00001")
|
||
|
|
resty.SetQueryParams(map[string]string{ // sample of those who use this manner
|
||
|
|
"api_key": "api-key-here",
|
||
|
|
"api_secert": "api-secert",
|
||
|
|
})
|
||
|
|
resty.R().SetQueryString("productId=232&template=fresh-sample&cat=resty&source=google&kw=buy a lot more")
|
||
|
|
|
||
|
|
// Form data for all request. Typically used with POST and PUT
|
||
|
|
resty.SetFormData(map[string]string{
|
||
|
|
"access_token": "BC594900-518B-4F7E-AC75-BD37F019E08F",
|
||
|
|
})
|
||
|
|
|
||
|
|
// Basic Auth for all request
|
||
|
|
resty.SetBasicAuth("myuser", "mypass")
|
||
|
|
|
||
|
|
// Bearer Auth Token for all request
|
||
|
|
resty.SetAuthToken("BC594900518B4F7EAC75BD37F019E08FBC594900518B4F7EAC75BD37F019E08F")
|
||
|
|
|
||
|
|
// Enabling Content length value for all request
|
||
|
|
resty.SetContentLength(true)
|
||
|
|
|
||
|
|
// Registering global Error object structure for JSON/XML request
|
||
|
|
resty.SetError(&Error{}) // or resty.SetError(Error{})
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Unix Socket
|
||
|
|
|
||
|
|
```go
|
||
|
|
unixSocket := "/var/run/my_socket.sock"
|
||
|
|
|
||
|
|
// Create a Go's http.Transport so we can set it in resty.
|
||
|
|
transport := http.Transport{
|
||
|
|
Dial: func(_, _ string) (net.Conn, error) {
|
||
|
|
return net.Dial("unix", unixSocket)
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
// Set the previous transport that we created, set the scheme of the communication to the
|
||
|
|
// socket and set the unixSocket as the HostURL.
|
||
|
|
r := resty.New().SetTransport(&transport).SetScheme("http").SetHostURL(unixSocket)
|
||
|
|
|
||
|
|
// No need to write the host's URL on the request, just the path.
|
||
|
|
r.R().Get("/index.html")
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Bazel support
|
||
|
|
|
||
|
|
Resty can be built, tested and depended upon via [Bazel](https://bazel.build).
|
||
|
|
For example, to run all tests:
|
||
|
|
|
||
|
|
```shell
|
||
|
|
bazel test :go_default_test
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Mocking http requests using [httpmock](https://github.com/jarcoal/httpmock) library
|
||
|
|
|
||
|
|
In order to mock the http requests when testing your application you
|
||
|
|
could use the `httpmock` library.
|
||
|
|
|
||
|
|
When using the default resty client, you should pass the client to the library as follow:
|
||
|
|
|
||
|
|
```go
|
||
|
|
httpmock.ActivateNonDefault(resty.DefaultClient.GetClient())
|
||
|
|
```
|
||
|
|
|
||
|
|
More detailed example of mocking resty http requests using ginko could be found [here](https://github.com/jarcoal/httpmock#ginkgo--resty-example).
|
||
|
|
|
||
|
|
## Versioning
|
||
|
|
|
||
|
|
resty releases versions according to [Semantic Versioning](http://semver.org)
|
||
|
|
|
||
|
|
* `gopkg.in/resty.vX` points to appropriate tagged versions; `X` denotes version series number and it's a stable release for production use. For e.g. `gopkg.in/resty.v0`.
|
||
|
|
* Development takes place at the master branch. Although the code in master should always compile and test successfully, it might break API's. I aim to maintain backwards compatibility, but sometimes API's and behavior might be changed to fix a bug.
|
||
|
|
|
||
|
|
## Contribution
|
||
|
|
|
||
|
|
I would welcome your contribution! If you find any improvement or issue you want to fix, feel free to send a pull request, I like pull requests that include test cases for fix/enhancement. I have done my best to bring pretty good code coverage. Feel free to write tests.
|
||
|
|
|
||
|
|
BTW, I'd like to know what you think about `Resty`. Kindly open an issue or send me an email; it'd mean a lot to me.
|
||
|
|
|
||
|
|
## Creator
|
||
|
|
|
||
|
|
[Jeevanandam M.](https://github.com/jeevatkm) (jeeva@myjeeva.com)
|
||
|
|
|
||
|
|
## Contributors
|
||
|
|
|
||
|
|
Have a look on [Contributors](https://github.com/go-resty/resty/graphs/contributors) page.
|
||
|
|
|
||
|
|
## License
|
||
|
|
|
||
|
|
Resty released under MIT license, refer [LICENSE](LICENSE) file.
|