# Darsman Discount

## Requirements

- Python (== 3.10)
- grpcio-tools (>=1.62.1)
- pydantic (>=2.7.0)

## Installation

Run the following command using pip:

```bash
pip install dmdc
```

## Sample code

```python
import asyncio
from dmdc import Discount


async def main():
    result = await Discount().retrieve(
        discount_token="dis token",
        request_id= "request id",   # Optional: default to None
        timeout="3.5",              # Optional: override default timeout
        wait_for_ready=True         # Optional: wait for channel if not ready
    )
    print(result)

if __name__ == "__main__":
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())

```

## Env example

```python
### === DISCOUNT SDK CONFIG === ###

# Server config
DISCOUNT_SDK_HOST=127.0.0.1
DISCOUNT_SDK_PORT=50051
DISCOUNT_SDK_API_KEY=your_api_key_here

# Graceful shutdown
DISCOUNT_SDK_CHANNEL_SHUTDOWN_GRACE=10

# Keepalive (for long-lived connection health checks)
DISCOUNT_SDK_KEEPALIVE_TIME_MS=60000
DISCOUNT_SDK_KEEPALIVE_TIMEOUT_MS=5000
DISCOUNT_SDK_KEEPALIVE_PERMIT_WITHOUT_CALLS=1
DISCOUNT_SDK_MAX_PINGS_WITHOUT_DATA=0

# Retry policy
DISCOUNT_SDK_MAX_ATTEMPTS=5  # more than 5 isn't allowed by grpc
DISCOUNT_SDK_INITIAL_BACKOFF=0.1s
DISCOUNT_SDK_MAX_BACKOFF=1.5s
DISCOUNT_SDK_BACKOFF_MULTIPLIER=2.0
DISCOUNT_SDK_RETRYABLE_STATUS_CODES=["UNAVAILABLE", "RESOURCE_EXHAUSTED", "ABORTED"]

# RPC-level configs
DISCOUNT_SDK_WAIT_FOR_READY=true
DISCOUNT_SDK_TIMEOUT=5.0
```
