{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "c83b6a4c",
   "metadata": {},
   "source": [
    "# Huawei OBS Directory\n",
    "The following code demonstrates how to load objects from the Huawei OBS (Object Storage Service) as documents."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "c2191935",
   "metadata": {},
   "outputs": [],
   "source": [
    "# Install the required package\n",
    "# pip install esdk-obs-python"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "55fca3b4",
   "metadata": {},
   "outputs": [],
   "source": [
    "from langchain.document_loaders import OBSDirectoryLoader"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "c3ed419f",
   "metadata": {},
   "outputs": [],
   "source": [
    "endpoint = \"your-endpoint\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "3428fd4e",
   "metadata": {},
   "outputs": [],
   "source": [
    "# Configure your access credentials\\n\n",
    "config = {\n",
    "    \"ak\": \"your-access-key\",\n",
    "    \"sk\": \"your-secret-key\"\n",
    "}\n",
    "loader = OBSDirectoryLoader(\"your-bucket-name\", endpoint=endpoint, config=config)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "9beede9f",
   "metadata": {},
   "outputs": [],
   "source": [
    "loader.load()"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "1e20a839",
   "metadata": {},
   "source": [
    "## Specify a Prefix for Loading\n",
    "If you want to load objects with a specific prefix from the bucket, you can use the following code:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "125f311d",
   "metadata": {},
   "outputs": [],
   "source": [
    "loader = OBSDirectoryLoader(\"your-bucket-name\", endpoint=endpoint, config=config, prefix=\"test_prefix\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "b3488037",
   "metadata": {},
   "outputs": [],
   "source": [
    "loader.load()"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "84c82c0a",
   "metadata": {},
   "source": [
    "## Get Authentication Information from ECS\n",
    "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. "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "1db99969",
   "metadata": {},
   "outputs": [],
   "source": [
    "config = {\"get_token_from_ecs\": True}\n",
    "loader = OBSDirectoryLoader(\"your-bucket-name\", endpoint=endpoint, config=config)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "57dd9f35",
   "metadata": {},
   "outputs": [],
   "source": [
    "loader.load()"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "30205d25",
   "metadata": {},
   "source": [
    "## Use a Public Bucket\n",
    "If your bucket's bucket policy allows anonymous access (anonymous users have `listBucket` and `GetObject` permissions), you can directly load the objects without configuring the `config` parameter."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "4dfa2ef0",
   "metadata": {},
   "outputs": [],
   "source": [
    "loader = OBSDirectoryLoader(\"your-bucket-name\", endpoint=endpoint)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "67d4c1d0",
   "metadata": {},
   "outputs": [],
   "source": [
    "loader.load()"
   ]
  }
 ],
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