Skip to content

docs: Update migration progress to reflect current accurate status #27

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
hadv merged 1 commit into from
Sep 5, 2025
Merged

docs: Update migration progress to reflect current accurate status #27

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
217 changes: 98 additions & 119 deletions README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,12 +1,12 @@
# NebulaStore

[![CI](https://github.com/hadv/NebulaStore/actions/workflows/ci.yml/badge.svg)](https://github.com/hadv/NebulaStore/actions/workflows/ci.yml)
[![Tests](https://img.shields.io/badge/tests-129%20passing-brightgreen)](https://github.com/hadv/NebulaStore/actions)
[![Migration](https://img.shields.io/badge/Eclipse%20Store%20Migration-Complete-success)](https://github.com/hadv/NebulaStore)
[![Tests](https://img.shields.io/badge/tests-158%20passing-brightgreen)](https://github.com/hadv/NebulaStore/actions)
[![Migration](https://img.shields.io/badge/Eclipse%20Store%20Migration-In%20Progress-yellow)](https://github.com/hadv/NebulaStore)

A complete .NET port of [Eclipse Store](https://github.com/eclipse-store/store) - Ultra-fast pure object graph persistence with advanced features. **Migration Complete!** ✅
A .NET port of [Eclipse Store](https://github.com/eclipse-store/store) - Ultra-fast pure object graph persistence. **Migration In Progress** 🚧

NebulaStore provides .NET developers with the same high-performance, pure object graph storage capabilities that Eclipse Store offers to Java developers, plus advanced features like GigaMap indexed collections, ACID transactions, and comprehensive performance optimizations.
NebulaStore provides .NET developers with high-performance, pure object graph storage capabilities similar to Eclipse Store for Java developers. This project is actively porting core Eclipse Store modules to .NET.

## Overview

Expand All @@ -20,6 +20,8 @@ This project ports the following Eclipse Store modules from the [original Java r
- **storage/embedded-configuration** - Configuration system
- **storage/storage** - Core storage types and interfaces
- **afs/blobstore** - Abstract File System blob storage backend
- **afs/aws/s3** - AWS S3 storage backend
- **afs/azure/storage** - Azure Storage backend
- **gigamap/gigamap** - High-performance in-memory data structure with advanced indexing and performance optimizations

The module structure exactly mirrors the Eclipse Store Java repository for familiarity and consistency.
Expand All @@ -32,39 +34,41 @@ The module structure exactly mirrors the Eclipse Store Java repository for famil
| `storage/embedded-configuration` | `storage/embedded-configuration/` | ✅ Complete |
| `storage/storage` | `storage/storage/` | ✅ Complete |
| `afs/blobstore` | `afs/blobstore/` | ✅ Complete |
| `afs/googlecloud/firestore` | `afs/googlecloud/firestore/` | ✅ Complete |
| `afs/aws/s3` | `afs/aws/s3/` | ✅ Complete |
| `afs/azure/storage` | `afs/azure/storage/` | ✅ Complete |
| `afs/googlecloud/firestore` | `afs/googlecloud/firestore/` | 🚧 In Progress |
| `gigamap/gigamap` | `gigamap/` | ✅ Complete |

## 🎉 Eclipse Store Migration Complete - Production Ready!
## 🚧 Eclipse Store Migration Progress

**✅ Eclipse Store Migration: 100% Complete** - Successfully ported all core Eclipse Store functionality to .NET with full API compatibility and advanced features including ACID transactions, high-performance indexing, and comprehensive querying capabilities.
**Current Status: Core Modules Complete** - Successfully ported essential Eclipse Store functionality to .NET with working storage engine, configuration system, and high-performance collections.

### 🚀 Core Modules - All Complete
### 🚀 Core Modules Status

- ✅ **`storage/embedded`** - Complete embedded storage engine with ACID transactions
- ✅ **`storage/embedded`** - Complete embedded storage engine
- ✅ **`storage/embedded-configuration`** - Complete configuration system
- ✅ **`storage/storage`** - Complete core storage types and interfaces
- ✅ **`afs/blobstore`** - Complete Abstract File System blob storage backend
- ✅ **`afs/googlecloud/firestore`** - Complete Google Cloud Firestore integration
- ✅ **`afs/aws/s3`** - Complete AWS S3 storage backend
- ✅ **`afs/azure/storage`** - Complete Azure Storage backend
- 🚧 **`afs/googlecloud/firestore`** - Google Cloud Firestore integration (in progress)
- ✅ **`gigamap/gigamap`** - Complete high-performance indexed collections with:
- ✅ **Advanced indexing system** (bitmap, hash, unique indices)
- ✅ **Full LINQ support** for querying (Eclipse Store compatible)
- ✅ **Performance optimizations** (bulk operations, compression, caching)
- ✅ **ACID transaction support** with logging and recovery
- ✅ **Comprehensive test suite** (129 tests passing - 100% success rate)
- ✅ **Production-ready** with full Eclipse Store API compatibility
- ✅ **Comprehensive test suite** (158 tests passing - 100% success rate)

### 🎯 Production Ready Features
### 🎯 Available Features

- ✅ **Full Eclipse Store API compatibility**
- ✅ **ACID transaction support** with logging and recovery
- ✅ **Core Eclipse Store API compatibility**
- ✅ **Pure object graph persistence** without ORM overhead
- ✅ **Advanced querying** with LINQ (equivalent to Java Stream API)
- ✅ **High-performance indexing** with bitmap and hash indices
- ✅ **Case-insensitive string indexing** with proper equality comparers
- ✅ **Case-insensitive string indexing** with proper equality handling
- ✅ **Comprehensive statistics** and performance monitoring
- ✅ **Memory-efficient** data structures and operations
- ✅ **Thread-safe operations** with proper synchronization
- ✅ **Crash recovery** and data integrity validation
- ✅ **Multiple storage backends** (local, AWS S3, Azure Storage)

## Source Code References

Expand All @@ -74,12 +78,14 @@ This project ports code from the [Eclipse Store Java repository](https://github.
- **Java Source**: [`storage/embedded-configuration`](https://github.com/eclipse-store/store/tree/main/storage/embedded-configuration) → **C# Port**: `storage/embedded-configuration/`
- **Java Source**: [`storage/storage`](https://github.com/eclipse-store/store/tree/main/storage/storage) → **C# Port**: `storage/storage/`
- **Java Source**: [`afs/blobstore`](https://github.com/eclipse-store/store/tree/main/afs/blobstore) → **C# Port**: `afs/blobstore/`
- **Java Source**: [`afs/googlecloud/firestore`](https://github.com/eclipse-store/store/tree/main/afs/googlecloud/firestore) → **C# Port**: `afs/googlecloud/firestore/`
- **Java Source**: [`afs/aws/s3`](https://github.com/eclipse-store/store/tree/main/afs/aws/s3) → **C# Port**: `afs/aws/s3/`
- **Java Source**: [`afs/azure/storage`](https://github.com/eclipse-store/store/tree/main/afs/azure/storage) → **C# Port**: `afs/azure/storage/`
- **Java Source**: [`afs/googlecloud/firestore`](https://github.com/eclipse-store/store/tree/main/afs/googlecloud/firestore) → **C# Port**: `afs/googlecloud/firestore/` (in progress)
- **Java Source**: [`gigamap/gigamap`](https://github.com/eclipse-store/store/tree/main/gigamap/gigamap) → **C# Port**: `gigamap/`

The .NET implementation maintains the same module structure, interfaces, and design patterns as the original Eclipse Store Java code while adapting to .NET conventions and leveraging C# language features.

## ✨ Features - Complete Eclipse Store Implementation
## ✨ Features - Core Eclipse Store Implementation

### 🏗️ Core Storage Engine
- ✅ **Pure object graph persistence** - Direct object storage without ORM overhead
Expand All @@ -89,13 +95,6 @@ The .NET implementation maintains the same module structure, interfaces, and des
- ✅ **Type handler system** for custom serialization and complex types
- ✅ **Lazy query traversal** for efficient data access

### 🔒 ACID Transaction System
- ✅ **Full ACID compliance** - Atomicity, Consistency, Isolation, Durability
- ✅ **Transaction logging** with automatic recovery mechanisms
- ✅ **Data integrity validation** with checksums and consistency checks
- ✅ **Crash recovery** capabilities for data consistency
- ✅ **Nested transactions** support for complex operations

### 🚀 Advanced Querying & Indexing
- ✅ **GigaMap indexed collections** - High-performance data structures
- ✅ **Full LINQ support** - Natural .NET querying (equivalent to Java Stream API)
Expand Down Expand Up @@ -124,7 +123,9 @@ The .NET implementation maintains the same module structure, interfaces, and des
- ✅ **Local file system** storage with configurable options
- ✅ **Abstract File System (AFS)** for pluggable storage backends
- ✅ **Blob storage** support for large object handling
- ✅ **Google Cloud Firestore** integration for cloud storage
- ✅ **AWS S3** storage backend for cloud storage
- ✅ **Azure Storage** backend for Microsoft cloud
- 🚧 **Google Cloud Firestore** integration (in progress)

## Architecture

Expand All @@ -146,8 +147,18 @@ NebulaStore follows the Eclipse Store module structure:
- **src/** - Core AFS blobstore implementation
- **test/** - Unit tests for blobstore functionality
- **NebulaStore.Afs.Blobstore.csproj** - Project file
- **googlecloud/** - Google Cloud storage backends
- **firestore/** - Google Cloud Firestore integration
- **aws/** - AWS storage backends
- **s3/** - AWS S3 integration
- **src/** - S3 connector and extensions
- **test/** - S3 integration tests
- **NebulaStore.Afs.Aws.S3.csproj** - Project file
- **azure/** - Azure storage backends
- **storage/** - Azure Storage integration
- **src/** - Azure Storage connector and extensions
- **test/** - Azure Storage integration tests
- **NebulaStore.Afs.Azure.Storage.csproj** - Project file
- **googlecloud/** - Google Cloud storage backends (in progress)
- **firestore/** - Google Cloud Firestore integration (in progress)
- **src/** - Firestore connector and extensions
- **test/** - Firestore integration tests
- **NebulaStore.Afs.GoogleCloud.Firestore.csproj** - Project file
Expand Down Expand Up @@ -203,8 +214,11 @@ dotnet test afs/blobstore/test/
# Run AFS integration tests
dotnet test afs/tests/

# Run Firestore tests (requires emulator or actual Firestore)
dotnet test afs/googlecloud/firestore/test/
# Run AWS S3 tests
dotnet test afs/aws/s3/test/

# Run Azure Storage tests
dotnet test afs/azure/storage/test/

# Run GigaMap performance tests and benchmarks
dotnet test gigamap/tests/
Expand All @@ -213,7 +227,7 @@ dotnet test gigamap/tests/
dotnet test tests/NebulaStore.Core.Tests/
```

### 🚀 Using NebulaStore - Complete Eclipse Store API
### 🚀 Using NebulaStore - Core Eclipse Store API

#### Simple Usage
```csharp
Expand All @@ -233,7 +247,7 @@ storage.StoreRoot();
var results = storage.Query<SomeType>().Where(x => x.Condition).ToList();
```

#### Advanced GigaMap Usage (Advanced Features)
#### Advanced GigaMap Usage
```csharp
using NebulaStore.GigaMap;

Expand Down Expand Up @@ -291,56 +305,44 @@ var afsConfig = EmbeddedStorageConfiguration.New()
using var afsStorage = EmbeddedStorage.StartWithAfs(afsConfig);
```

#### Google Cloud Firestore Usage

**Prerequisites:**
- Google Cloud Project with Firestore enabled
- Service Account with appropriate permissions (`Cloud Datastore User` role minimum)
- Authentication configured (see authentication methods below)
#### AWS S3 Usage

```csharp
using NebulaStore.Afs.GoogleCloud.Firestore;
using Google.Cloud.Firestore;

// Method 1: Using Service Account Key
var firestore = new FirestoreDbBuilder
{
ProjectId = "your-project-id",
CredentialsPath = "path/to/service-account-key.json"
}.Build();

// Method 2: Using Application Default Credentials (ADC)
Environment.SetEnvironmentVariable("GOOGLE_APPLICATION_CREDENTIALS", "path/to/service-account-key.json");
var firestore = FirestoreDb.Create("your-project-id");

// Start with Firestore
using var storage = EmbeddedStorageFirestoreExtensions.StartWithFirestore("your-project-id");

// Custom Firestore configuration
var firestoreConfig = EmbeddedStorageConfiguration.New()
.UseFirestore("your-project-id", "my-storage-collection")
using NebulaStore.Afs.Aws.S3;

// Start with S3 storage
using var storage = EmbeddedStorage.StartWithS3("my-bucket", "storage-prefix");

// Custom S3 configuration
var s3Config = EmbeddedStorageConfiguration.New()
.UseS3("my-bucket", "storage-prefix")
.SetChannelCount(4)
.Build();

using var firestoreStorage = EmbeddedStorage.Foundation(firestoreConfig).Start();
using var s3Storage = EmbeddedStorage.Foundation(s3Config).Start();
```

#### Custom Root Object
```csharp
var myRoot = new MyDataClass { SomeProperty = "initial" };
using var storage = EmbeddedStorage.Start(myRoot, "storage-dir");
```
#### Azure Storage Usage

#### Batch Operations
```csharp
using var storer = storage.CreateStorer();
var objectIds = storer.StoreAll(obj1, obj2, obj3);
storer.Commit();
using NebulaStore.Afs.Azure.Storage;

// Start with Azure Storage
using var storage = EmbeddedStorage.StartWithAzure("connection-string", "container-name");

// Custom Azure configuration
var azureConfig = EmbeddedStorageConfiguration.New()
.UseAzureStorage("connection-string", "container-name")
.SetChannelCount(4)
.Build();

using var azureStorage = EmbeddedStorage.Foundation(azureConfig).Start();
```

#### Backup & Restore
#### Custom Root Object
```csharp
await storage.CreateBackupAsync("backup-directory");
var myRoot = new MyDataClass { SomeProperty = "initial" };
using var storage = EmbeddedStorage.Start(myRoot, "storage-dir");
```

#### Monitoring & Metrics
Expand All @@ -360,36 +362,16 @@ Console.WriteLine($"Cached Entities: {cacheMonitor.EntityCount}");
monitoringManager.StorageManagerMonitor.IssueFullGarbageCollection();
```

#### ACID Transactions (Advanced Features)
#### Batch Operations
```csharp
using NebulaStore.Storage.Embedded;

// ACID transaction support with automatic logging
using var storage = EmbeddedStorage.Start();
using var storer = storage.CreateStorer();
var objectIds = storer.StoreAll(obj1, obj2, obj3);
storer.Commit();
```

// Transaction with automatic rollback on failure
try
{
using var transaction = storage.BeginTransaction();

// Multiple operations in single transaction
var person1 = new Person { Name = "Alice", Age = 30 };
var person2 = new Person { Name = "Bob", Age = 25 };

storage.Store(person1);
storage.Store(person2);

// Commit all changes atomically
transaction.Commit();
}
catch (Exception)
{
// Automatic rollback on exception
// Data integrity maintained
}

// Crash recovery - automatic on startup
// Transaction logs ensure data consistency
#### Backup & Restore
```csharp
await storage.CreateBackupAsync("backup-directory");
```

#### Performance Monitoring & Statistics
Expand All @@ -415,7 +397,7 @@ monitoringManager.StorageManagerMonitor.IssueFullGarbageCollection();

## 📚 Examples - Complete Feature Demonstrations

The `examples/` directory contains comprehensive examples demonstrating all NebulaStore features including Phase 4 advanced capabilities:
The `examples/` directory contains comprehensive examples demonstrating NebulaStore features:

### 🏗️ Core Storage Examples
- **`EmbeddedStorageExample.cs`** - Basic storage operations, configuration, and batch processing
Expand Down Expand Up @@ -467,32 +449,29 @@ dotnet run -- --example Production

- **[Monitoring Documentation](storage/storage/src/monitoring/README.md)** - Comprehensive guide to the monitoring system
- **[Configuration Guide](storage/embedded-configuration/README.md)** - Storage configuration options
- **[GigaMap Advanced Features](gigamap/README.md)** - **NEW!** Complete guide to advanced features
- **[Transaction System Guide](docs/transactions.md)** - **NEW!** ACID transaction documentation
- **[Performance Optimization](docs/performance.md)** - **NEW!** Performance tuning and optimization guide
- **[GigaMap Advanced Features](gigamap/README.md)** - Complete guide to advanced features
- **[API Documentation](docs/)** - Generated API documentation

## 🎉 Eclipse Store Migration Complete - What's Next?
## 🚧 Eclipse Store Migration Status

**NebulaStore Eclipse Store migration is now 100% complete!** 🚀
**Current Progress: Core Functionality Complete** 🚀

The migration successfully brings all core Eclipse Store functionality to .NET, providing a complete, production-ready embedded database solution.
The migration has successfully implemented essential Eclipse Store functionality for .NET, providing a solid foundation for object graph persistence.

### ✅ What You Get
- **Full Eclipse Store compatibility** - Drop-in replacement for Java Eclipse Store
- **Production-ready stability** - 129 tests passing with comprehensive coverage
- **Advanced features** - ACID transactions, advanced querying, high-performance indexing
### ✅ What's Available
- **Core Eclipse Store compatibility** - Essential APIs ported to .NET
- **Stable foundation** - 158 tests passing with good coverage
- **High-performance indexing** - GigaMap collections with advanced features
- **Native .NET integration** - Built specifically for .NET runtime and patterns
- **Performance optimized** - Bulk operations, caching, compression, monitoring
- **Multiple storage backends** - Local, AWS S3, Azure Storage support

### 🚀 Ready for Production Use
NebulaStore is now ready for production deployment with:
- ✅ **Complete feature parity** with Eclipse Store Java
- ✅ **ACID transaction support** for data integrity
### 🎯 Current Capabilities
NebulaStore currently provides:
- ✅ **Core object graph persistence** without ORM overhead
- ✅ **High-performance indexing** with GigaMap collections
- ✅ **Comprehensive monitoring** and performance tracking
- ✅ **Multiple storage backends** (local, AFS, Google Cloud Firestore)
- ✅ **Full test coverage** and validation
- ✅ **Multiple storage backends** (local, AFS, AWS S3, Azure Storage)
- ✅ **Solid test coverage** and validation

### 🤝 Contributing
The core migration is complete, but we welcome contributions for:
Expand All @@ -509,4 +488,4 @@ The core migration is complete, but we welcome contributions for:

---

**🎯 Eclipse Store for .NET - Mission Accomplished!** NebulaStore provides the same ultra-fast, pure object graph persistence that Eclipse Store offers to Java developers, now available for the .NET ecosystem with full feature parity and native C# integration.
**🎯 Eclipse Store for .NET - Core Implementation Complete!** NebulaStore provides ultra-fast, pure object graph persistence similar to Eclipse Store for Java developers, now available for the .NET ecosystem with core functionality and native C# integration.
Loading