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from __future__ import annotations
import json
import os
from typing import Any, Dict
from .registry import ToolRegistry
def _s3_client():
try:
import boto3 # type: ignore
except Exception as e:
return None, f"boto3 not available: {e}"
try:
s3 = boto3.client(
"s3",
endpoint_url=os.getenv("AWS_ENDPOINT_URL"),
region_name=os.getenv("AWS_DEFAULT_REGION", "us-east-1"),
)
return s3, None
except Exception as e:
return None, str(e)
def t_s3_list(args: Dict[str, Any]) -> str:
bucket = args.get("bucket")
prefix = args.get("prefix", "")
s3, err = _s3_client()
if err:
return json.dumps({"error": err})
if not bucket:
return json.dumps({"error": "bucket required"})
try:
resp = s3.list_objects_v2(Bucket=bucket, Prefix=prefix) # type: ignore
items = [o["Key"] for o in resp.get("Contents", [])]
return json.dumps({"items": items})
except Exception as e:
return json.dumps({"error": str(e)})
def register_tools(reg: ToolRegistry) -> None:
reg.register(
name="s3_list",
description="List objects from S3/R2 compatible storage.",
parameters={"type": "object", "properties": {"bucket": {"type": "string"}, "prefix": {"type": "string"}}, "required": ["bucket"]},
handler=t_s3_list,
)
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