checkout

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 Go to latest Published: Oct 18, 2023 License: MIT Imports: 14 Imported by: 0

README

Checkout.com Go SDK

Status

The official [Checkout][checkout] Go client library.

Getting started

Make sure your project is using Go Modules (it will have a go.mod file in its root if it already is):

go mod init

import (
    "github.com/goinapp/checkout-sdk-go"
)

Run any of the normal go commands (build/install/test). The Go toolchain will resolve and fetch the checkout-sdk-go module automatically.

API Keys

This SDK can be used with two different pair of API keys provided by Checkout. However, using different API keys imply using specific API features. Please find in the table below the types of keys that can be used within this SDK.

Account System Public Key (example) Secret Key (example)
default pk_g650ff27-7c42-4ce1-ae90-5691a188ee7b sk_gk3517a8-3z01-45fq-b4bd-4282384b0a64
Four pk_pkhpdtvabcf7hdgpwnbhw7r2uic sk_m73dzypy7cf3gf5d2xr4k7sxo4e

Note: sandbox keys have a test_ or sbox_ identifier, for Default and Four accounts respectively.

If you don't have your own API keys, you can sign up for a test account here.

OAuth

The SDK doesn't support any OAuth authentication flow natively, however it supports OAuth authorization tokens that can be used as API keys. For more information about OAuth please refer to the official documentation.

How to use the SDK

The SDK is structured by different modules and each module gives you access to different business features. All these modules can be instantiated at once, or you can choose to create single modules separately.

import (
    "github.com/goinapp/checkout-sdk-go"
    "github.com/goinapp/checkout-sdk-go/client"
)

api := client.CheckoutApi(&secretKey, &publicKey, Sandbox) // or Production
var tokensClient = api.Tokens

import (
"github.com/goinapp/checkout-sdk-go"
"github.com/goinapp/checkout-sdk-go/client"
)

config, err := checkout.SdkConfig(&secretKey, &publicKey, Sandbox) // or Production
var tokensClient = tokens.NewClient(*config)
Tokens
import (
    "github.com/goinapp/checkout-sdk-go"
    "github.com/goinapp/checkout-sdk-go/tokens"
)

config, err := checkout.SdkConfig(&secretKey, &publicKey, Sandbox) // or Production
var client = tokens.NewClient(*config) // or api.Tokens
var card = &client.Card{
    Type:        common.Card,
    Number:      "4242424242424242",
    ExpiryMonth: 2,
    ExpiryYear:  2022,
    Name:        "Customer Name",
    CVV:         "100",
}
var request = &tokens.Request{
    Card: card,
}
response, err := client.Request(request)
Payments
import (
    "github.com/goinapp/checkout-sdk-go"
    "github.com/goinapp/checkout-sdk-go/payments"
)

config, err := checkout.SdkConfig(&secretKey, &publicKey, Sandbox) // or Production
var client = payments.NewClient(*config) // or api.Payments

var source = payments.TokenSource{
    Type:  common.Token.String(),
    Token: "tok_",
}
var request = &payments.Request{
    Source:   source,
    Amount:   "100",
    Currency: "USD",
    Reference: "Payment Reference",
    Customer: &payments.Customer{
        Email: "example@email.com",
        Name:  "First Name Last Name",
    },
    Metadata: map[string]string{
        "udf1": "User Define",
    },
}

idempotencyKey := checkout.NewIdempotencyKey()
params := checkout.Params{
    IdempotencyKey: &idempotencyKey,
}

response, err := client.Request(request, &params)
Payment Detail
import (
    "github.com/goinapp/checkout-sdk-go"
    "github.com/goinapp/checkout-sdk-go/payments"
)

config, err := checkout.SdkConfig(&secretKey, &publicKey, Sandbox) // or Production
var client = payments.NewClient(*config) // or api.Payments

response, err := client.Get("pay_")
Actions
import (
    "github.com/goinapp/checkout-sdk-go"
    "github.com/goinapp/checkout-sdk-go/payments"
)

config, err := checkout.SdkConfig(&secretKey, &publicKey, Sandbox) // or Production
var client = payments.NewClient(*config) // or api.Payments

response, err := client.Actions("pay_")
Captures
import (
    "github.com/goinapp/checkout-sdk-go"
    "github.com/goinapp/checkout-sdk-go/payments"
)

config, err := checkout.SdkConfig(&secretKey, &publicKey, Sandbox) // or Production
var client = payments.NewClient(*config) // or api.Payments

idempotencyKey := checkout.NewIdempotencyKey()
params := checkout.Params{
    IdempotencyKey: &idempotencyKey,
}

request := &client.CapturesRequest{
    Amount:    100,
    Reference: "Reference",
    Metadata: map[string]string{
        "udf1": "User Define",
    },
}
response, err := client.Captures("pay_", request, &params)
Voids
import (
    "github.com/goinapp/checkout-sdk-go"
    "github.com/goinapp/checkout-sdk-go/payments"
)

config, err := checkout.SdkConfig(&secretKey, &publicKey, Sandbox) // or Production
var client = payments.NewClient(*config) // or api.Payments

idempotencyKey := checkout.NewIdempotencyKey()
params := checkout.Params{
    IdempotencyKey: &idempotencyKey,
}

request := &client.VoidsRequest{
    Reference: "Reference",
    Metadata: map[string]string{
        "udf1": "User Define",
    },
}
response, err := client.Voids("pay_", request, &params)
Refunds
import (
    "github.com/goinapp/checkout-sdk-go"
    "github.com/goinapp/checkout-sdk-go/payments"
)

config, err := checkout.SdkConfig(&secretKey, &publicKey, Sandbox) // or Production
var client = payments.NewClient(*config) // or api.Payments

request := &payments.RefundsRequest{
    Amount:    100,
    Reference: "Reference",
    Metadata: map[string]string{
        "udf1": "User Define",
    },
}

idempotencyKey := checkout.NewIdempotencyKey()
params := checkout.Params{
    IdempotencyKey: &idempotencyKey,
}

response, err := client.Refunds("pay_", request, &params)

More documentation related to Checkout API and the SDK is available at:

The execution of integration tests require the following environment variables set in your system:

  • For Default account systems: CHECKOUT_PUBLIC_KEY & CHECKOUT_SECRET_KEY
  • For Four account systems: CHECKOUT_FOUR_PUBLIC_KEY & CHECKOUT_FOUR_SECRET_KEY

Code of Conduct

Please refer to Code of Conduct

Licensing

MIT

Documentation

Index

Constants

View Source 
const (
	// Sandbox - Sandbox
	Sandbox SupportedEnvironment = "sandbox.checkout.com"
	// Production - Production
	Production SupportedEnvironment = "checkout.com"
	// UnknownPlatform - Production
	UnknownPlatform string = "unknown platform"
)
View Source 
const (
	// CKORequestID ...
	CKORequestID = "cko-request-id"
	// CKOVersion ...
	CKOVersion = "cko-version"
)
View Source 
const ClientVersion = "0.0.1"

ClientVersion ...

View Source 
const (
	// DefaultMaxNetworkRetries is the default maximum number of retries made
	// by a Checkout.com client.
	DefaultMaxNetworkRetries int64 = 2
)

Variables

This section is empty.

Functions

func Bool 

func Bool(v bool) *bool

Bool returns a pointer to the bool value passed in.

func BoolSlice 

func BoolSlice(v []bool) []*bool

BoolSlice returns a slice of bool pointers given a slice of bools.

func BoolValue 

func BoolValue(v *bool) bool

BoolValue returns the value of the bool pointer passed in or false if the pointer is nil.

func Float64 

func Float64(v float64) *float64

Float64 returns a pointer to the float64 value passed in.

func Float64Slice 

func Float64Slice(v []float64) []*float64

Float64Slice returns a slice of float64 pointers given a slice of float64s.

func Float64Value 

func Float64Value(v *float64) float64

Float64Value returns the value of the float64 pointer passed in or 0 if the pointer is nil.

func Int64 

func Int64(v int64) *int64

Int64 returns a pointer to the int64 value passed in.

func Int64Value 

func Int64Value(v *int64) int64

Int64Value returns the value of the int64 pointer passed in or 0 if the pointer is nil.

func NewIdempotencyKey 

func NewIdempotencyKey() string

NewIdempotencyKey -

func SetAppInfo 

func SetAppInfo(info *AppInfo)

SetAppInfo sets app information. See AppInfo.

func String 

func String(v string) *string

String returns a pointer to the string value passed in.

func StringSlice 

func StringSlice(v []string) []*string

StringSlice returns a slice of string pointers given a slice of strings.

func StringValue 

func StringValue(v *string) string

StringValue returns the value of the string pointer passed in or "" if the pointer is nil.

Types

type AppInfo 

type AppInfo struct {
	Name    string `json:"name"`
	URL     string `json:"url"`
	Version string `json:"version"`
}

AppInfo ...

type Config 

type Config struct {
	PublicKey            string
	SecretKey            string
	URI                  *string
	HTTPClient           *http.Client
	LeveledLogger        LeveledLoggerInterface
	MaxNetworkRetries    *int64
	BearerAuthentication bool
}

Config ...

func Create deprecated 

func Create(secretKey string, publicKey *string) (*Config, error)

Deprecated: Please use SdkConfig

func SdkConfig 

func SdkConfig(secretKey *string, publicKey *string, env SupportedEnvironment) (*Config, error)

type HTTPClient 

type HTTPClient interface {
	Get(path string) (*StatusResponse, error)
	Post(path string, request interface{}, params *Params) (*StatusResponse, error)
	Put(path string, request interface{}) (*StatusResponse, error)
	Patch(path string, request interface{}) (*StatusResponse, error)
	Delete(path string) (*StatusResponse, error)
	Upload(path, boundary string, body *bytes.Buffer) (*StatusResponse, error)
	Download(path string) (*StatusResponse, error)
}

HTTPClient ...

type Headers 

type Headers struct {
	Header       http.Header
	CKORequestID *string `json:"cko-request-id,omitempty"`
	CKOVersion   *string `json:"cko-version,omitempty"`
}

Headers ...

type Level 

type Level uint32

Level represents a logging level. 

const (
	// LevelNull sets a logger to show no messages at all
	LevelNull Level = 0
	// LevelError sets a logger to show error messages only
	LevelError Level = 1
	// LevelWarn sets a logger to show warning messages or anything more severe.
	LevelWarn Level = 2
	// LevelInfo sets a logger to show informational messages or anything more severe.
	LevelInfo Level = 3
	// LevelDebug sets a logger to show information messages or anything more severe.
	LevelDebug Level = 4
)

type LeveledLogger 

type LeveledLogger struct {
	// Level is the minimum logging level that will be emitted by this logger.
	//
	// For example, a Level set to LevelWarn will emit warnings and errors, but not information or debug messages.
	//
	// Always set this with a constant like LevelWarn because the individual values are not guaranteed to be stable.
	Level Level
	// contains filtered or unexported fields
}

LeveledLogger is a leveled logger implementation.

It prints warnings and errors to `os.Stderr` and other messages to `os.Stdout`.

func (*LeveledLogger) Debugf 

func (l *LeveledLogger) Debugf(format string, v ...interface{})

Debugf - logs a debug message using Printf conventions.

func (*LeveledLogger) Errorf 

func (l *LeveledLogger) Errorf(format string, v ...interface{})

Errorf - logs a warning message using Printf conventions.

func (*LeveledLogger) Infof 

func (l *LeveledLogger) Infof(format string, v ...interface{})

Infof - logs an informational message using Printf conventions.

func (*LeveledLogger) Warnf 

func (l *LeveledLogger) Warnf(format string, v ...interface{})

Warnf - logs a warning message using Printf conventions.

type LeveledLoggerInterface 

type LeveledLoggerInterface interface {
	// Debugf logs a debug message using Printf conventions.
	Debugf(format string, v ...interface{})
	// Errorf logs a warning message using Printf conventions.
	Errorf(format string, v ...interface{})
	// Infof logs an informational message using Printf conventions.
	Infof(format string, v ...interface{})
	// Warnf logs a warning message using Printf conventions.
	Warnf(format string, v ...interface{})
}

LeveledLoggerInterface provides a basic leveled logging interface for printing debug, informational, warning, and error messages.

It's implemented by LeveledLogger and also provides out-of-the-box compatibility with a Logrus Logger, but may require a thin shim for use with other logging libraries that you use less standard conventions like Zap. 

var DefaultLeveledLogger LeveledLoggerInterface = &LeveledLogger{
	Level: LevelError,
}

DefaultLeveledLogger -

type Params 

type Params struct {
	// Headers may be used to provide extra header lines on the HTTP request.
	Headers        http.Header `form:"-"`
	IdempotencyKey *string     `form:"-"` // Passed as header
}

Params is the structure that contains the common properties of any *Params structure.

func (*Params) GetParams 

func (p *Params) GetParams() *Params

GetParams -

func (*Params) SetIdempotencyKey 

func (p *Params) SetIdempotencyKey(val string)

SetIdempotencyKey sets a value for the Idempotency-Key header.

type ParamsContainer 

type ParamsContainer interface {
	GetParams() *Params
}

ParamsContainer is a general interface for which all parameter structs should comply. They achieve this by embedding a Params struct and inheriting its implementation of this interface.

type StatusResponse 

type StatusResponse struct {
	Status       string     `json:"status,omitempty"`
	StatusCode   int        `json:"status_code,omitempty"`
	ResponseBody []byte     `json:"response_body,omitempty"`
	ResponseCSV  [][]string `json:"response_csv,omitempty"`
	Headers      *Headers   `json:"headers,omitempty"`
}

StatusResponse ...

type SupportedAPI 

type SupportedAPI string

SupportedAPI is an enumeration of supported Checkout.com endpoints. Currently supported values are "Unified Payment Gateway". 

const (
	// UPAPI - Unified Payment API
	UPAPI SupportedAPI = "api"
	// Access - OAuth Authorization
	Access SupportedAPI = "access"
)

type SupportedEnvironment 

type SupportedEnvironment string

SupportedEnvironment is an enumeration of supported Checkout.com environment. Currently supported values are "Sandbox" & "Production".

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