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datastore.go
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datastore.go
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package infrastructures
import (
"context"
"errors"
"fmt"
"cloud.google.com/go/datastore"
models "github.com/junpayment/oshiete/models/datastore"
)
type dataStoreClient interface {
Put(ctx context.Context, key *datastore.Key, src interface{}) (*datastore.Key, error)
Get(ctx context.Context, key *datastore.Key, dst interface{}) (err error)
}
type DataStoreClient struct {
ctx context.Context
dataStoreClient dataStoreClient
}
func NewDataStoreClient(googleProjectName string) (*DataStoreClient, error) {
ctx := context.Background()
dsClient, err := datastore.NewClient(ctx, googleProjectName)
if err != nil {
return nil, fmt.Errorf(`dsClient, err := datastore.NewClient(c, googleProjectName): %w`, err)
}
return &DataStoreClient{
ctx: ctx,
dataStoreClient: dsClient,
}, nil
}
func (c *DataStoreClient) Save(key, answer string) error {
data := &models.Answer{Body: answer}
dataStoreKey := datastore.NameKey("Answer", key, nil)
_, err := c.dataStoreClient.Put(c.ctx, dataStoreKey, data)
if err != nil {
return fmt.Errorf(`_, err := c.dataStoreClient.Put(ctx, dataStoreKey, data): %w`, err)
}
return nil
}
func (c *DataStoreClient) GetByKey(key string) (string, error) {
data := &models.Answer{}
dataStoreKey := datastore.NameKey("Answer", key, nil)
err := c.dataStoreClient.Get(c.ctx, dataStoreKey, data)
if err != nil && !errors.Is(err, datastore.ErrNoSuchEntity) {
return "", fmt.Errorf(`err := c.dataStoreClient.Get(ctx, dataStoreKey, data): %w`, err)
}
return data.Body, nil
}