Dify Cloud Kit

Dify Cloud Kit is a unified abstraction library for integrating various cloud object storage services in Go. It simplifies switching between providers and supports local testing and multi-cloud deployments.

✨ Features

• Supports multiple backends: Local FS, Aliyun OSS, AWS S3, Azure Blob, Tencent COS, Huawei OBS, Google GCS
• Unified and clean interface
• Factory pattern to dynamically load drivers
• Easy to write tests with local and in-memory backends

📦 Installation

go get github.com/langgenius/dify-cloud-kit

🚀 Quick Start

import (
    "github.com/langgenius/dify-cloud-kit/oss"
    "github.com/langgenius/dify-cloud-kit/oss/factory"
)

func main() {
    store, err := factory.Load("local", oss.OSSArgs{
        Local: &oss.Local{
            Path: "/tmp/files",
        },
    })
    if err != nil {
        panic(err)
    }

    files, _ := store.List("/")
    fmt.Println(files)
}

📁 Supported Storage Providers

Provider	Module Path	Required Fields
Local	oss/local/localfile.go	Path
Aliyun OSS	oss/aliyun/aliyun.go	Endpoint, AccessKey, SecretKey, Bucket
AWS S3	oss/s3/s3.go	Region, AccessKey, SecretKey, Bucket
Azure Blob	oss/azureblob/blob.go	AccountName, AccountKey, Container
Google GCS	oss/gcsblob/gcs.go	CredentialsJSON, Bucket
Tencent COS	oss/tencentcos/cos.go	SecretId, SecretKey, Bucket, Region
Huawei OBS	oss/huaweiobs/obs.go	AK, SK, Endpoint, Bucket
Volcengine TOS	oss/volcenginetos/tos.go	Endpoint, AccessKey, SecretKey, Bucket

🏗️ Usage with Factory

You can dynamically load a storage backend using the factory:

store, err := factory.Load("s3", oss.OSSArgs{
    S3: &oss.S3{
        Region:    "us-west-2",
        AccessKey: "AKIA...",
        SecretKey: "SECRET...",
        Bucket:    "my-bucket",
    },
})

🧪 Testing

Unit tests are located in tests/oss/oss_test.go.

Environment Variables

Some providers require credentials to be passed via environment variables. Set them as needed:

export OSS_AWS_ACCESS_KEY=your-access-key
export OSS_AWS_SECRET_KEY=your-secret-key
export OSS_AWS_REGION=your-region
export OSS_S3_BUCKET=test-bucket

export OSS_ALIYUN_ENDPOINT=your-endpoint
export OSS_ALIYUN_ACCESS_KEY=your-access-key
export OSS_ALIYUN_SECRET_KEY=your-secret-key
export OSS_ALIYUN_BUCKET=test-bucket

Run Tests

go test ./...

📄 License

This project is licensed under the Apache 2.0 License.

NOTICE

Some parts of the code in this project originate from dify-plugin-daemon

Provider	Author	PR
Aliyun OSS	bravomark	langgenius/dify-plugin-daemon#261
Azure Blob	techan	langgenius/dify-plugin-daemon#172
Google GCS	Hironori Yamamoto	langgenius/dify-plugin-daemon#237
Local	lengyhua	langgenius/dify-plugin-daemon#157
AWS S3	Yeuoly	https://github.com/langgenius/dify-plugin-daemon/commit/9ad9d7d4de1d123956ab07955e541bc4053e5170
Tencent COS	quicksand	langgenius/dify-plugin-daemon#97
Volcengine TOS	quicksand	#2