110 lines
2.5 KiB
Go
110 lines
2.5 KiB
Go
// ------------------------------------------------------------
|
|
// Copyright (c) Microsoft Corporation.
|
|
// Licensed under the MIT License.
|
|
// ------------------------------------------------------------
|
|
|
|
package dynamodb
|
|
|
|
import (
|
|
"encoding/json"
|
|
|
|
aws_auth "github.com/dapr/components-contrib/authentication/aws"
|
|
|
|
"github.com/dapr/dapr/pkg/logger"
|
|
|
|
"github.com/aws/aws-sdk-go/aws"
|
|
"github.com/aws/aws-sdk-go/service/dynamodb"
|
|
"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute"
|
|
"github.com/dapr/components-contrib/bindings"
|
|
)
|
|
|
|
//DynamoDB allows performing stateful operations on AWS DynamoDB
|
|
type DynamoDB struct {
|
|
client *dynamodb.DynamoDB
|
|
table string
|
|
logger logger.Logger
|
|
}
|
|
|
|
type dynamoDBMetadata struct {
|
|
Region string `json:"region"`
|
|
Endpoint string `json:"endpoint"`
|
|
AccessKey string `json:"accessKey"`
|
|
SecretKey string `json:"secretKey"`
|
|
Table string `json:"table"`
|
|
}
|
|
|
|
// NewDynamoDB returns a new DynamoDB instance
|
|
func NewDynamoDB(logger logger.Logger) *DynamoDB {
|
|
return &DynamoDB{logger: logger}
|
|
}
|
|
|
|
// Init performs connection parsing for DynamoDB
|
|
func (d *DynamoDB) Init(metadata bindings.Metadata) error {
|
|
meta, err := d.getDynamoDBMetadata(metadata)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
client, err := d.getClient(meta)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
d.client = client
|
|
d.table = meta.Table
|
|
return nil
|
|
}
|
|
|
|
func (d *DynamoDB) Operations() []bindings.OperationKind {
|
|
return []bindings.OperationKind{bindings.CreateOperation}
|
|
}
|
|
|
|
func (d *DynamoDB) Invoke(req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
|
|
var obj interface{}
|
|
err := json.Unmarshal(req.Data, &obj)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
item, err := dynamodbattribute.MarshalMap(obj)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
input := &dynamodb.PutItemInput{
|
|
Item: item,
|
|
TableName: aws.String(d.table),
|
|
}
|
|
|
|
_, err = d.client.PutItem(input)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
func (d *DynamoDB) getDynamoDBMetadata(spec bindings.Metadata) (*dynamoDBMetadata, error) {
|
|
b, err := json.Marshal(spec.Properties)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var meta dynamoDBMetadata
|
|
err = json.Unmarshal(b, &meta)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &meta, nil
|
|
}
|
|
|
|
func (d *DynamoDB) getClient(metadata *dynamoDBMetadata) (*dynamodb.DynamoDB, error) {
|
|
sess, err := aws_auth.GetClient(metadata.AccessKey, metadata.SecretKey, metadata.Region, metadata.Endpoint)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
c := dynamodb.New(sess)
|
|
return c, nil
|
|
}
|