import requests
import logging

class InstancesAPI:
    def __init__(self, instances):
        self.instances = instances

    def fetch_reports(self):
        reports = {}
        for instance_url in self.instances:
            try:
                response = requests.get(f"{instance_url}/api/get/report")
                response.raise_for_status()
                reports[instance_url] = response.json()
            except requests.exceptions.RequestException as e:
                logging.error(f"Error contacting instance {instance_url}: {e}")
        return reports