from dataclasses import dataclass
from typing import Any
import extism
import json
class HostFunctionError(Exception):
"""Raised when a host function returns an error."""
pass
@extism.import_fn("extism:host/user", "counter_count")
def _counter_count(offset: int) -> int:
"""Raw host function - do not call directly."""
...
def counter_count(name: str) -> int:
"""Call the counter_count host function.
Args:
name: str parameter.
Returns:
int: The result value.
Raises:
HostFunctionError: If the host function returns an error.
"""
request = {
"name": name,
}
request_bytes = json.dumps(request).encode("utf-8")
request_mem = extism.memory.alloc(request_bytes)
response_offset = _counter_count(request_mem.offset)
response_mem = extism.memory.find(response_offset)
response = json.loads(extism.memory.string(response_mem))
return response.get("value", 0)