> ## Documentation Index
> Fetch the complete documentation index at: https://langchain-5e9cc07a-preview-srcomm-1772228869-09398c4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Huawei obs file integration

> Integrate with the Huawei obs file document loader using LangChain Python.

The following code demonstrates how to load an object from the Huawei OBS (Object Storage Service) as document.

```python theme={null}
# Install the required package
# pip install esdk-obs-python
```

```python theme={null}
from langchain_community.document_loaders.obs_file import OBSFileLoader
```

```python theme={null}
endpoint = "your-endpoint"
```

```python theme={null}
from obs import ObsClient

obs_client = ObsClient(
    access_key_id="your-access-key",
    secret_access_key="your-secret-key",
    server=endpoint,
)
loader = OBSFileLoader("your-bucket-name", "your-object-key", client=obs_client)
```

```python theme={null}
loader.load()
```

## Each loader with separate authentication information

If you don't need to reuse OBS connections between different loaders, you can directly configure the `config`. The loader will use the config information to initialize its own OBS client.

```python theme={null}
# Configure your access credentials\n
config = {"ak": "your-access-key", "sk": "your-secret-key"}
loader = OBSFileLoader(
    "your-bucket-name", "your-object-key", endpoint=endpoint, config=config
)
```

```python theme={null}
loader.load()
```

## Get authentication information from ECS

If your langchain is deployed on Huawei Cloud ECS and [Agency is set up](https://support.huaweicloud.com/intl/en-us/usermanual-ecs/ecs_03_0166.html#section7), the loader can directly get the security token from ECS without needing access key and secret key.

```python theme={null}
config = {"get_token_from_ecs": True}
loader = OBSFileLoader(
    "your-bucket-name", "your-object-key", endpoint=endpoint, config=config
)
```

```python theme={null}
loader.load()
```

## Access a publicly accessible object

If the object you want to access allows anonymous user access (anonymous users have `GetObject` permission), you can directly load the object without configuring the `config` parameter.

```python theme={null}
loader = OBSFileLoader("your-bucket-name", "your-object-key", endpoint=endpoint)
```

```python theme={null}
loader.load()
```

***

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