聚合计费平台租用

class ResourceUsage:
    def __init__(self, resource_type, usage_amount):
        self.resource_type = resource_type
        self.usage_amount = usage_amount

class BillingEngine:
    def __init__(self, rates):
        self.rates = rates  # {resource_type: rate_per_unit}

    def calculate_cost(self, usage):
        if usage.resource_type in self.rates:
            return usage.usage_amount * self.rates[usage.resource_type]
        else:
            raise ValueError("Unknown resource type")

# Example usage
rates = {"CPU": 0.5, "MEMORY": 0.1, "STORAGE": 0.01}
billing_engine = BillingEngine(rates)

cpu_usage = ResourceUsage("CPU", 10)
memory_usage = ResourceUsage("MEMORY", 20)
storage_usage = ResourceUsage("STORAGE", 100)

print("CPU Cost:", billing_engine.calculate_cost(cpu_usage))
print("Memory Cost:", billing_engine.calculate_cost(memory_usage))
print("Storage Cost:", billing_engine.calculate_cost(storage_usage))