toolkit

package module
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Published: Aug 23, 2022 License: MIT Imports: 12 Imported by: 0

README

Toolkit

A simple example of how to create a reusable Go module with commonly used tools.

The included tools are:

  • Read JSON
  • Write JSON
  • Produce a JSON encoded error response
  • Upload a file to a specified directory
  • Download a static file
  • Get a random string of length n
  • Post JSON to a remote service
  • Create a directory, including all parent directories, if it does not already exist
  • Create a URL safe slug from a string

Installation

go get -u github.com/techarm/toolkit

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type JSONResponse

type JSONResponse struct {
	Error   bool   `json:"error"`
	Message string `json:"message"`
	Data    any    `json:"data,omitempty"`
}

JSONResponse is the type used for sending JSON around

type Tools

type Tools struct {
	MaxFileSize       int
	AllowedFileTypes  []string
	MaxJSONSize       int
	AllowUnknowFields bool
}

Tools is the type used to instantiate this module. Any variable os this type will have access to all the methods with the reciever *Tools

func (*Tools) CreateDirIfNotExist

func (t *Tools) CreateDirIfNotExist(path string) error

CreateDirIfNotExist creates a directory, and all necessary parents, if it does not exist

func (*Tools) DownloadStaticFile

func (t *Tools) DownloadStaticFile(w http.ResponseWriter, r *http.Request, p, file, displayName string)

DownloadStaticFile download a file, and tries to force the brower to avoid displaying it in the brower window by setting content disposition. It also allow specification of the display name

func (*Tools) ErrorJSON

func (t *Tools) ErrorJSON(w http.ResponseWriter, err error, status ...int) error

ErrorJSON takes an error, and optionally a status code, and generates and status a JSON error message

func (*Tools) PushJSONToRemote

func (t *Tools) PushJSONToRemote(uri string, data any, client ...*http.Client) (*http.Response, int, error)

PushJSONToRemote posts aribtrary data to some URL as JSON, and returns the response, status code, and error if any. The final parameter, client, is optional. If none is specified, we use the standard http.Client

func (*Tools) RandomString

func (t *Tools) RandomString(n int) string

RandomString returns a string of random characters of length n, using randomStringSource as the soruce for the string

func (*Tools) ReadJSON

func (t *Tools) ReadJSON(w http.ResponseWriter, r *http.Request, data any) error

ReadJSON tries to read the body of a request and convert from json into a go data variable

func (*Tools) Slugify

func (t *Tools) Slugify(s string) (string, error)

Slugify is a simple means of creating a slug from a string

func (*Tools) UploadOneFile

func (t *Tools) UploadOneFile(r *http.Request, uploadDir string, rename ...bool) (*UploadedFile, error)

func (*Tools) UploadedFiles

func (t *Tools) UploadedFiles(r *http.Request, uploadDir string, rename ...bool) ([]*UploadedFile, error)

func (*Tools) WriteJSON

func (t *Tools) WriteJSON(w http.ResponseWriter, status int, data any, headers ...http.Header) error

WriteJSON take a response status code and arbitrary data and writes json to the client

type UploadedFile

type UploadedFile struct {
	NewFileName      string
	OriginalFileName string
	FileSize         int64
}

UploadedFile is a struct used to save information abcout an upload file

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