huawei-cloud-obs-total-size

Queries the total storage size of Huawei Cloud OBS (Object Storage Service) buckets and returns ONLY the size value — a single number, in bytes by default. Supports querying the total size of one bucket or the combined total across all buckets under the account. Uses the KooCLI obsutil-backed hcloud OBS ls ... -du -bf=raw command (primary) or the huaweicloudsdkobs Python SDK (fallback). Read-only — never creates, modifies or deletes any resource. Use this skill whenever the user wants to know the total size of an OBS bucket or the overall OBS storage usage, e.g. for capacity review, cost estimation or storage planning. Triggers include: OBS total size, OBS bucket size, total storage usage, bucket capacity, OBS大小, OBS总大小, OBS容量, 桶大小, 查询OBS大小, 存储占用, OBS存储量.

Huawei Cloud OBS Total Size Skill

Overview

This skill queries the total size of Huawei Cloud OBS buckets and returns only the size value (a single number). It is a read-only statistics skill: it never creates, modifies, or deletes buckets, directories, or objects.

Architecture:

text

Agent → hcloud CLI (KooCLI OBS / obsutil, primary) → Huawei Cloud OBS API
       ↘ huaweicloudsdkobs Python SDK (fallback)            ↗

Two query scopes:

Scope	Description	Example
Single bucket	Total size of one bucket only	--bucket my-bucket → 5002295
All buckets (default)	Combined total size across all buckets under the account	--all → 9533151096

Applicable Scenarios:

• Capacity review: "how much storage does this bucket / my OBS account use?"
• Cost estimation: estimate OBS storage billing based on total bytes
• Storage planning: compare usage before migration or quota changes
• Compliance auditing: track total storage growth

Prerequisites

1. hcloud CLI (KooCLI) installed and authenticated — See references/cli-installation-guide.md
2. obsutil installed — required by the hcloud OBS ls command (bundled with KooCLI or standalone)
3. OBS credentials configured for obsutil — hcloud OBS ls reads AK/SK/endpoint from the obsutil config file (.obsutilconfig in the user home directory), which is separate from the KooCLI account credentials
4. Python 3.8+ with huaweicloudsdkobs package (SDK fallback) — pip install huaweicloudsdkobs
5. IAM permissions — obs:bucket:ListBucket, obs:object:List, obs:bucket:ListAllMyBuckets — See references/iam-policies.md

跨区域桶（Multi-region）：--all 会从 hcloud OBS ls 的输出解析每个桶所属区域，并按桶所属区域 动态绑定 endpoint（CLI 用 -e=obs.<region>.myhuaweicloud.com，SDK 用桶的 location 构造客户端）， 因此账号下存在多区域桶时仍可正确汇总。单个桶查询失败（桶不存在 / 无权限）会跳过并给出告警， 不会中断整次求和。

OBS credentials are separate. Before running, check whether obsutil credentials are configured:

bash

hcloud OBS ls -s -limit=1

If the output is Please set ak, sk and endpoint in the configuration file! or an InvalidAccessKeyId error, obsutil credentials are not configured. Ask the user to configure them in their own terminal (never ask the user to paste AK/SK into the conversation). Provide the following example command:

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hcloud obs config -i=<YourAK> -k=<YourSK> -e=obs.<Region>.myhuaweicloud.com

Example (cn-north-4): hcloud obs config -i=<YourAK> -k=<YourSK> -e=obs.cn-north-4.myhuaweicloud.com

Workflow

1. Confirm the scope — ask the user which OBS bucket to measure, or whether they want the total across all buckets
2. Verify prerequisites — hcloud version, hcloud OBS ls -s -limit=1 to confirm obsutil credentials
3. Run the query — use the script scripts/query_obs_total_size.py (primary) with the appropriate flags
4. Return the size — the script prints a single number; relay that number to the user

Core Commands

Total Size of a Single Bucket (Primary)

Returns the total size of one bucket, in bytes:

bash

python3 scripts/query_obs_total_size.py --bucket <bucket_name>

Total Size Across All Buckets

Returns the combined total size of all buckets under the account, in bytes. Buckets in regions other than the configured endpoint are queried with their own regional endpoint automatically; a single inaccessible bucket is skipped with a warning instead of aborting the whole sum:

bash

python3 scripts/query_obs_total_size.py --all

--all is the default when --bucket is not given:

bash

python3 scripts/query_obs_total_size.py

Different Output Units

bash

# MB
python3 scripts/query_obs_total_size.py --all --unit mb

# Human readable (e.g. 8.88GB)
python3 scripts/query_obs_total_size.py --all --human

Force SDK Executor

If the CLI/obsutil path is unavailable, force the Python SDK:

bash

python3 scripts/query_obs_total_size.py --all --executor sdk

Direct CLI Command (for reference)

The underlying obsutil command the script uses for a single bucket is hcloud OBS ls obs://<bucket_name>/ -du -bf=raw, which prints [DU] Total bucket size: N. Prefer the script commands above; use the raw obsutil command only for manual inspection.

Parameter Confirmation

Parameter	Required	Description	Example
--bucket	No*	OBS bucket name to measure	my-bucket
--all	No*	Total size across all buckets (default)	--all
--unit	No	Output unit: bytes, kb, mb, gb	--unit mb
--human	No	Human readable size (e.g. 4.77MB)	--human
--region	No	Huawei Cloud region (SDK fallback only)	cn-north-4
--executor	No	auto (default), cli, or sdk	--executor sdk

* Either --bucket or --all must be chosen; --all is the default when neither is given.

Reference Documents

• CLI Installation Guide
• IAM Policies
• Verification Method
• Data Flow Diagram
• Acceptance Criteria

KooCLI Command Format Standard

The hcloud OBS module is backed by obsutil. The -du flag queries the size of a storage space and -bf=raw prints bytes exactly:

Feature	Description	Example
Service name	OBS (obsutil-backed)	hcloud OBS ls
Operation name	Lowercase obsutil command	ls
Query size	-du flag obtains the size of the specified storage space	hcloud OBS ls obs://bucket/ -du
Byte format	-bf=raw prints sizes in exact bytes	hcloud OBS ls obs://bucket/ -du -bf=raw
Credentials	obsutil config file (.obsutilconfig)	-i=AK -k=SK -e=endpoint