01_client_instantiation

Yandex.Disk Client instantiation

How to use

There're three ways to create new client:

• using your own properly configured http.Client
• using oauth2.Config and oauth2.Token
• using just an access token

Using http.Client

import (
	"context"
	"net/http"
	
	"golang.org/x/oauth2"
	"golang.org/x/oauth2/yandex"

	"github.com/yurykabanov/go-yandex-disk"
)

// ...

oauthConfig := &oauth2.Config{
    ClientID:     "CLIENT-ID",
    ClientSecret: "CLIENT-SECRET",
    RedirectURL:  "http://your-app.tld/auth/yandex/callback",
    Endpoint:     yandex.Endpoint,
}

// Retrieve token from whatever storage
token := oauth2.Token{
    TokenType:    "OAuth",
    AccessToken:  "ACCESS-TOKEN",
    RefreshToken: "REFRESH-TOKEN",
    Expiry:       /* proper time.Time */,
}

source := oauthConfig.TokenSource(context.TODO(), &token)

// You can configure http.Client as needed
httpClient := &http.Client{
    Transport: &oauth2.Transport{
        Source: source,
    },
}

client := yadisk.New(httpClient)

Note the following:

1. You MUST use oauth2.Transport with proper token source.
2. The token MUST have TokenType equals to OAuth (instead of default Bearer). It is descibed in Yandex.Disk API documentation.
3. You SHOULD replace context.TODO() in token source with more appropriate one.

Using oauth2.Config and oauth2.Token

It is just the same as previous one, just a little bit shorter:

oauthConfig := &oauth2.Config{
    /* ... */
}

// Retrieve token from whatever storage
token := &oauth2.Token{
    TokenType:    "OAuth",
    AccessToken:  "ACCESS-TOKEN",
    RefreshToken: "REFRESH-TOKEN",
    Expiry:       /* proper time.Time */,    
}

client := yadisk.NewFromConfigAndToken(oauthConfig, token, context.TODO())

You should note exactly the same things as in previous method.

Using just an access token

The most simplest way:

client := yadisk.NewFromAccessToken(*accessToken)

But it WILL NOT refresh your token automatically as two previous methods.

Building

Build example as following:

go build -o ./bin/yandex-client ./examples/01_client_instantiation/main.go

Running

It doesn't really perform any useful action, but you can run it:

./bin/yandex-client                               \ 
    -using=own-http-client                        \
    -client-id=YOUR-APPLICATION-CLIENT-ID         \
    -client-secret=YOUR-APPLICATION-CLIENT-SECRET \
    -access-token=YOUR-ACCESS-TOKEN               \
    -refresh-token=YOUR-REFRESH-TOKEN             \
    -expiry-time="2020-01-02T12:34:56Z"
    
./bin/yandex-client                               \ 
    -using=oauth-config-and-token                 \
    -client-id=YOUR-APPLICATION-CLIENT-ID         \
    -client-secret=YOUR-APPLICATION-CLIENT-SECRET \
    -access-token=YOUR-ACCESS-TOKEN               \
    -refresh-token=YOUR-REFRESH-TOKEN             \
    -expiry-time="2020-01-02T12:34:56Z"
    
./bin/yandex-client                               \ 
    -using=access-token-only                      \
    -access-token=YOUR-ACCESS-TOKEN