omium 0.2.3

Omium SDK for Python - Fault-tolerant agent operating system

Omium Python SDK

Python SDK for integrating Omium checkpoint and recovery capabilities into your agent workflows.

Installation

From PyPI (recommended)

python -m pip install --upgrade pip
python -m pip install omium

The package is signed and published via PyPI’s Trusted Publisher workflow so that no API tokens are stored in the repository. Enable pip’s hash-checking mode or use pipx if you need additional supply-chain guarantees.

From source (development)

cd omium-platform/sdk/python
python -m pip install -e ".[dev]"

Quick Start

1. Setup Client

from omium import OmiumClient

client = OmiumClient(checkpoint_manager_url="localhost:7001")
await client.connect()
client.set_execution_context(execution_id="exec_123", agent_id="agent_1")

2. Using @checkpoint Decorator

from omium import checkpoint

@checkpoint("validate_data", preconditions=["data is not None"])
async def validate_data(data: dict) -> dict:
    assert data is not None
    assert "value" in data
    return {"validated": True, "data": data}

# Use the function
result = await validate_data({"value": 42})

3. Using Checkpoint Context Manager

from omium import Checkpoint

async with Checkpoint("important_state", client=client) as cp:
    # Critical code here
    result = await do_critical_thing()
    cp.update_state(step="complete")
    # Checkpoint saved automatically on exit

4. Manual Checkpoint Creation

checkpoint_id = await client.create_checkpoint(
    checkpoint_name="manual_checkpoint",
    state={"data": "important"},
    preconditions=["data exists"],
    postconditions=["data is valid"],
)

5. Rollback to Checkpoint

rollback_result = await client.rollback_to_checkpoint(
    checkpoint_id="cp_123",
    trigger_reason="manual rollback",
)

Features

• @checkpoint Decorator - Automatic checkpoint creation before/after function execution
• Checkpoint Context Manager - Manual checkpoint control with context manager
• Async gRPC Client - High-performance async communication with checkpoint-manager
• State Serialization - Automatic serialization of function arguments and results
• Pre/Post Conditions - Validation support for checkpoint creation
• Rollback Support - Rollback execution to any checkpoint

Examples

See examples/basic_checkpoint.py for complete examples.

Testing

# Install dev dependencies
pip install -e ".[dev]"

# Run tests
pytest tests/

# Run with coverage
pytest tests/ --cov=omium --cov-report=html

API Reference

OmiumClient

Main client for checkpoint operations.

Methods

• connect() - Connect to checkpoint-manager service
• close() - Close connection
• set_execution_context(execution_id, agent_id) - Set execution context
• create_checkpoint(...) - Create a checkpoint
• get_checkpoint(checkpoint_id) - Get checkpoint details
• list_checkpoints(execution_id) - List checkpoints for execution
• rollback_to_checkpoint(checkpoint_id) - Rollback to checkpoint
• verify_checkpoint(checkpoint_id) - Verify checkpoint integrity

@checkpoint Decorator

@checkpoint(
    name: str,
    preconditions: Optional[List[str]] = None,
    postconditions: Optional[List[str]] = None,
    client: Optional[OmiumClient] = None,
    execution_id: Optional[str] = None,
    agent_id: Optional[str] = None,
)

Checkpoint Context Manager

Checkpoint(
    name: str,
    client: Optional[OmiumClient] = None,
    execution_id: Optional[str] = None,
    agent_id: Optional[str] = None,
    preconditions: Optional[List[str]] = None,
    postconditions: Optional[List[str]] = None,
)

Requirements

• Python >= 3.11
• grpcio >= 1.60.0
• protobuf >= 4.25.0

Development

Generating Proto Code

# From sdk/python directory
python -m grpc_tools.protoc \
    --python_out=omium/proto \
    --grpc_python_out=omium/proto \
    --proto_path=../../shared/proto \
    ../../shared/proto/checkpoint/checkpoint.proto

Or use the script:

.\scripts\generate-proto.ps1  # Windows
./scripts/generate-proto.sh   # Linux/Mac

License

Proprietary - Omium Platform