devento 0.1.4

Python SDK for Devento cloud sandboxes

Devento Python SDK

Official Python SDK for Devento, the cloud sandbox platform that provides secure, isolated execution environments.

Installation

pip install devento

For async support:

pip install devento[async]

Quick Start

from devento import Devento

# Initialize the client
devento = Devento(api_key="sk-devento-...")

# Create and use a sandbox
with devento.box() as box:
    result = box.run("echo 'Hello from Devento!'")
    print(result.stdout)  # "Hello from Devento!"

Features

• Simple API: Intuitive interface for creating and managing boxes
• Automatic cleanup: Boxes are automatically cleaned up when done
• Streaming output: Real-time command output streaming
• Async support: Full async/await support for concurrent operations
• Type hints: Complete type annotations for better IDE support
• Error handling: Comprehensive error handling with specific exception types

Usage Examples

Basic Command Execution

from devento import Devento

devento = Devento(api_key="sk-devento-...")

with devento.box() as box:
    # Run simple commands
    result = box.run("pwd")
    print(f"Current directory: {result.stdout}")

    # Install packages
    box.run("pip install numpy pandas")

    # Run Python code
    result = box.run("python -c 'import numpy as np; print(np.array([1,2,3]))'")
    print(result.stdout)

Error Handling

from devento import Devento, CommandTimeoutError, DeventoError

try:
    with devento.box() as box:
        # This will timeout
        result = box.run("sleep 120", timeout=5)
except CommandTimeoutError as e:
    print(f"Command timed out: {e}")
except DeventoError as e:
    print(f"Error: {e}")

Streaming Output

with devento.box() as box:
    # Stream output as it's generated
    result = box.run(
        "for i in {1..5}; do echo \"Line $i\"; sleep 1; done",
        on_stdout=lambda line: print(f"[LIVE] {line}", end=""),
        on_stderr=lambda line: print(f"[ERROR] {line}", end="")
    )

Custom Box Configuration

from devento import Devento, BoxConfig

config = BoxConfig(
    cpu=2,
    mib_ram=2048,
    timeout=7200,  # 2 hours
    metadata={"project": "data-analysis"}
)

with devento.box(config=config) as box:
    # Run resource-intensive tasks
    result = box.run("python train_model.py")

Web Support

Boxes can expose services to the internet via public URLs. Each box gets a unique hostname, and you can access specific ports using the get_public_url() method:

with devento.box() as box:
    # Start a web server on port 8080
    box.run("python -m http.server 8080 &")

    # Wait for server to start
    box.run("sleep 2")

    # Get the public URL for port 8080
    public_url = box.get_public_url(8080)
    print(f"Access your server at: {public_url}")
    # Output: https://8080-uuid.deven.to

    # The service is now accessible from anywhere on the internet
    box.run(f"curl {public_url}")

This feature is useful for:

• Testing webhooks and callbacks
• Sharing development servers temporarily
• Demonstrating web applications
• Running services that need to be accessible from external systems

Port Exposing

You can dynamically expose ports from inside the sandbox to random external ports. This is useful when you need to access services running inside the sandbox but don't know the port in advance or need multiple services:

with devento.box() as box:
    # Start a service on port 3000 inside the sandbox
    box.run("python -m http.server 3000 &")

    # Give the server a moment to start
    box.run("sleep 2")

    # Expose the internal port 3000 to an external port
    exposed_port = box.expose_port(3000)

    print(f"Internal port {exposed_port.target_port} is now accessible on external port {exposed_port.proxy_port}")
    print(f"Port mapping expires at: {exposed_port.expires_at}")

    # You can now access the service using the proxy_port
    # For example: http://sandbox-hostname:proxy_port

The expose_port method returns an ExposedPort object with:

• target_port - The port inside the sandbox (what you requested)
• proxy_port - The external port assigned by the system
• expires_at - When this port mapping will expire

Snapshots

Snapshots allow you to save the state of a sandbox and restore it later. This is useful for creating checkpoints, backing up configurations, or reverting changes:

from devento import Devento

devento = Devento()

with devento.box() as box:
    box.wait_until_ready()
    
    # Create a snapshot before making changes
    snapshot = box.create_snapshot(label="clean-state")
    box.wait_snapshot_ready(snapshot.id)
    
    # Make some changes
    box.run("apt-get update && apt-get -y install nginx")
    box.run("echo 'Hello World' > /var/www/html/index.html")
    
    # List all snapshots
    snapshots = box.list_snapshots()
    for s in snapshots:
        print(f"Snapshot {s.id}: {s.label} - {s.status}")
    
    # Restore to the previous state
    box.restore_snapshot(snapshot.id)
    box.wait_until_ready()  # Wait for box to be running again after restore
    
    # The changes are gone - nginx is not installed anymore
    result = box.run("which nginx", on_stderr=lambda _: None)
    print("nginx found" if result.exit_code == 0 else "nginx not found")

Available snapshot methods:

• list_snapshots() - List all snapshots for the box
• get_snapshot(snapshot_id) - Get details of a specific snapshot
• create_snapshot(label=None, description=None) - Create a new snapshot
• restore_snapshot(snapshot_id) - Restore the box from a snapshot
• delete_snapshot(snapshot_id) - Delete a snapshot
• wait_snapshot_ready(snapshot_id, timeout=300, poll_interval=1.0) - Wait for a snapshot to be ready

Snapshot states:

• CREATING - Snapshot is being created
• READY - Snapshot is ready to use
• RESTORING - Snapshot is being restored
• DELETED - Snapshot has been deleted
• ERROR - Snapshot creation failed

Note: Snapshots can only be created when the box is in RUNNING or PAUSED state.

Async Operations

import asyncio
from devento import AsyncDevento

async def run_parallel_tasks():
    async with AsyncDevento(api_key="sk-devento-...") as devento:
        async with devento.box() as box:
            # Run multiple commands in parallel
            results = await asyncio.gather(
                box.run("task1.py"),
                box.run("task2.py"),
                box.run("task3.py")
            )

            for result in results:
                print(result.stdout)

asyncio.run(run_parallel_tasks())

Manual Box Management

# Create a box without automatic cleanup
box = devento.create_box()

try:
    # Wait for box to be ready
    box.wait_until_ready()

    # Run commands
    result = box.run("echo 'Hello'")
    print(result.stdout)

    # Check box status
    print(f"Box status: {box.status}")
finally:
    # Don't forget to clean up!
    box.stop()

API Reference

Client Classes

• Devento: Main client for synchronous operations
• AsyncDevento: Client for async operations (requires pip install devento[async])

Configuration

• BoxConfig: Configuration for box creation
  • cpu: Number of CPUs to allocate (default: 1)
  • mib_ram: MiB RAM to allocate (default: 1024)
  • timeout: Maximum lifetime in seconds (default: 3600, or DEVENTO_BOX_TIMEOUT env var)
  • metadata: Custom metadata dictionary

Models

• Box: Represents a box instance
  • hostname: Public hostname for web access (e.g., uuid.deven.to)
  • get_public_url(port): Get the public URL for accessing a specific port
• CommandResult: Result of command execution
  • stdout: Command output
  • stderr: Error output
  • exit_code: Process exit code
  • status: Command status (QUEUED, RUNNING, DONE, FAILED, ERROR)
• ExposedPort: Result of exposing a port
  • proxy_port: External port assigned by the system
  • target_port: Port inside the sandbox
  • expires_at: When this port mapping expires

Exceptions

• DeventoError: Base exception for all SDK errors
• APIError: Base for API-related errors
• AuthenticationError: Invalid API key
• BoxNotFoundError: Box doesn't exist
• CommandTimeoutError: Command execution timeout
• ValidationError: Invalid request parameters

Environment Variables

The SDK supports the following environment variables:

• DEVENTO_API_KEY: Your API key (alternative to passing it in code)
• DEVENTO_BASE_URL: API base URL (default: https://api.devento.ai)
• DEVENTO_CPU: CPU to allocate to the sandbox (default: 1)
• DEVENTO_MIB_RAM: MiB RAM to allocate to the sandbox (default: 1024)
• DEVENTO_BOX_TIMEOUT: Default box timeout in seconds (default: 3600)

Example:

export DEVENTO_API_KEY="sk-devento-..."
export DEVENTO_BASE_URL="https://api.devento.ai"
export DEVENTO_BOX_TIMEOUT="7200"
export DEVENTO_CPU="1"
export DEVENTO_MIB_RAM="1024"

# Now you can initialize without parameters
python -c "from devento import Devento; client = Devento()"

Requirements

• Python 3.9+
• requests library
• aiohttp (optional, for async support)

Support

• Documentation: https://devento.ai
• Issues: https://github.com/devento-ai/sdk-py/issues

License

MIT License - see LICENSE file for details.