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oss.go
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oss.go
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// ------------------------------------------------------------
// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
// ------------------------------------------------------------
package oss
import (
"bytes"
"encoding/json"
"github.com/dapr/components-contrib/bindings"
"github.com/dapr/dapr/pkg/logger"
"github.com/google/uuid"
"github.com/aliyun/aliyun-oss-go-sdk/oss"
)
// AliCloudOSS is a binding for an AliCloud OSS storage bucket
type AliCloudOSS struct {
metadata *ossMetadata
client *oss.Client
logger logger.Logger
}
type ossMetadata struct {
Endpoint string `json:"endpoint"`
AccessKeyID string `json:"accessKeyID"`
AccessKey string `json:"accessKey"`
Bucket string `json:"bucket"`
}
// NewAliCloudOSS returns a new instance
func NewAliCloudOSS(logger logger.Logger) *AliCloudOSS {
return &AliCloudOSS{logger: logger}
}
// Init does metadata parsing and connection creation
func (s *AliCloudOSS) Init(metadata bindings.Metadata) error {
m, err := s.parseMetadata(metadata)
if err != nil {
return err
}
client, err := s.getClient(m)
if err != nil {
return err
}
s.metadata = m
s.client = client
return nil
}
func (s *AliCloudOSS) Operations() []bindings.OperationKind {
return []bindings.OperationKind{bindings.CreateOperation}
}
func (s *AliCloudOSS) Invoke(req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
key := ""
if val, ok := req.Metadata["key"]; ok && val != "" {
key = val
} else {
key = uuid.New().String()
s.logger.Debugf("key not found. generating key %s", key)
}
//r := bytes.NewReader(req.Data)
bucket, err := s.client.Bucket(s.metadata.Bucket)
if err != nil {
return nil, err
}
// Upload a byte array.
err = bucket.PutObject(key, bytes.NewReader(req.Data))
if err != nil {
return nil, err
}
return nil, err
}
func (s *AliCloudOSS) parseMetadata(metadata bindings.Metadata) (*ossMetadata, error) {
b, err := json.Marshal(metadata.Properties)
if err != nil {
return nil, err
}
var m ossMetadata
err = json.Unmarshal(b, &m)
if err != nil {
return nil, err
}
return &m, nil
}
func (s *AliCloudOSS) getClient(metadata *ossMetadata) (*oss.Client, error) {
client, err := oss.New(metadata.Endpoint, metadata.AccessKeyID, metadata.AccessKey)
if err != nil {
return nil, err
}
return client, nil
}