fix:hws ecs add volime info

[Lyc-heng]

Thank you for your contribution to CloudRec!

What About:

• Server (java)
• Collector (go)
• Rule (opa)

Description:

Add volume information to HWS ECS for subsequent related risk checks, such as unencrypted volumes.

[gemini-code-assist]

Summary of Changes

Hello @Lyc-heng, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the Huawei Cloud (HWS) Elastic Cloud Server (ECS) collector by integrating Elastic Volume Service (EVS) data. The primary goal is to enrich the collected ECS instance information with detailed volume attributes, including the region ID and a list of associated volumes. This data enrichment is foundational for implementing advanced risk checks, such as detecting unencrypted volumes, thereby improving the overall security posture assessment capabilities.

Highlights

• EVS Client Integration: The Elastic Volume Service (EVS) client is now initialized alongside the ECS and VPC clients, enabling interaction with Huawei Cloud's block storage service.
• Enhanced Instance Detail: The InstanceDetail struct has been augmented to include the RegionId and a comprehensive list of Volumes attached to each ECS instance, providing richer context for collected data.
• Volume Information Retrieval: New logic has been implemented to fetch detailed information for each attached volume using the EVS client, which is crucial for subsequent risk assessments like identifying unencrypted volumes.

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[gemini-code-assist]

Code Review

The pull request successfully integrates EVS volume information into the ECS instance details, which is a valuable addition for subsequent risk checks. The changes are well-scoped and align with the stated objective. There is a typo in the PR title, "volime" should be "volume". Additionally, there are a couple of areas for improvement regarding error handling and robustness in the getVolume function, as detailed in the specific comments.

[gemini-code-assist]

Accessing (*response.Volumes)[0] without checking if response.Volumes is non-empty can lead to a runtime panic if the API returns an empty slice. Additionally, if client.ListVolumes encounters an error for a specific volume, the function currently returns nil immediately, discarding any volume details that might have been successfully retrieved for other volumes. It would be more robust to log the error for the failed volume and continue processing the remaining volumes, returning a partial list of successfully retrieved volume details.

        if err != nil {
            log.GetWLogger().Error(fmt.Sprintf("list volumes error for volume %s: %s", volume.Id, err.Error()))
            continue
        }
        if response.Volumes != nil && len(*response.Volumes) > 0 {
            result = append(result, (*response.Volumes)[0])
        } else {
            log.GetWLogger().Warn(fmt.Sprintf("no volume details returned for volume %s", volume.Id))
        }

[gemini-code-assist]

Go source files should end with a newline character. This is a common convention and helps with version control systems and tools.

Suggested change

	}
	}