* **Feature** - Change base image to `python:3.7-slim-buster`.
* **Feature** - Add capability for synchronous scanners.
* **Feature** - Add `--scan-time-requirement` to Worker to cull queued tasks that don't have time to finish before expriring.
* **Feature** - Add asyncio compatible class to create temporary files `AsyncArtifactTempfile`.
* **Feature** - Use a new session per request to PolySwarmd.
* **Feature** - Support PolySwarmd-Fast.
* **Feature** - Check balance earlier for Abiters.
* **Feature** - Store balances from server in TTL cache.
* **Fix** - Remove retries on successful transactions.
* **Fix** - Improve backoff on requests.
* **Fix** - Move IO to separate task if result is not read.
* **Fix** - Resolve polyswarm-artifact and jsonschema incompatibility
* **Fix** - Aynchronize Producer wait and Scanner duration .
* **Fix** - Arbiters no longer vote if there are any False masks (i.e no votes or has errors).
* **Fix** - Ambassador Queue plays nice with asyncio.
* **Fix** - Remove extra waits in Ambassador queue.
Synchronous Scanners
`Scanner` implementations no longer have to be asyncio compatible.
Starting in 2.8.0, developers can set a `ScanMode`, then overwrite either `scan_async()` or `scan_sync()`.
These functions take the same parameters as `scan()`, which still exists.
This change is backwards compatible, so old scanners will run as normal.
python
from polyswarmclient.abstractscanner import AbstractScanner, ScanResult, ScanMode
class Scanner(AbstractScanner):
def __init__():
super(Scanner, self).__init__(ScanMode.SYNC)
def scan_sync(...):
pass
class Scanner(AbstractScanner):
def __init__():
super(Scanner, self).__init__(ScanMode.ASYNC)
async def scan_async(...):
pass
Breaking Changes
1. Switched to python 3.7 where `async` is a reserved keyword