91 lines
1.8 KiB
Go
91 lines
1.8 KiB
Go
package basic
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import (
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"context"
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"encoding/json"
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"fmt"
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"time"
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"github.com/google/uuid"
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"github.com/unistack-org/micro/v3/auth"
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"github.com/unistack-org/micro/v3/store"
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"github.com/unistack-org/micro/v3/util/token"
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)
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// Basic implementation of token provider, backed by the store
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type Basic struct {
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store store.Store
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}
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var (
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// StorePrefix to isolate tokens
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StorePrefix = "tokens/"
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)
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// NewTokenProvider returns an initialized basic provider
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func NewTokenProvider(opts ...token.Option) token.Provider {
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options := token.NewOptions(opts...)
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if options.Store == nil {
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options.Store = store.DefaultStore
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}
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return &Basic{
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store: options.Store,
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}
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}
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// Generate a token for an account
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func (b *Basic) Generate(acc *auth.Account, opts ...token.GenerateOption) (*token.Token, error) {
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options := token.NewGenerateOptions(opts...)
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// marshal the account to bytes
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bytes, err := json.Marshal(acc)
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if err != nil {
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return nil, err
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}
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// write to the store
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key := uuid.New().String()
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err = b.store.Write(context.Background(), &store.Record{
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Key: fmt.Sprintf("%v%v", StorePrefix, key),
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Value: bytes,
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Expiry: options.Expiry,
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})
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if err != nil {
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return nil, err
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}
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// return the token
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return &token.Token{
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Token: key,
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Created: time.Now(),
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Expiry: time.Now().Add(options.Expiry),
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}, nil
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}
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// Inspect a token
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func (b *Basic) Inspect(t string) (*auth.Account, error) {
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// lookup the token in the store
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recs, err := b.store.Read(context.Background(), StorePrefix+t)
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if err == store.ErrNotFound {
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return nil, token.ErrInvalidToken
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} else if err != nil {
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return nil, err
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}
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bytes := recs[0].Value
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// unmarshal the bytes
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var acc *auth.Account
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if err := json.Unmarshal(bytes, &acc); err != nil {
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return nil, err
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}
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return acc, nil
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}
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// String returns basic
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func (b *Basic) String() string {
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return "basic"
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}
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