> ## Documentation Index
> Fetch the complete documentation index at: https://doc.lucidworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Download Blob

> Job configuration specifications

export const schema = {
  "type": "object",
  "title": "Download Blob",
  "description": "Downloads a blob from an HTTP/HTTPS endpoint and updates it in Fusion storage. Useful for fetching remote binary content such as files, images, or data exports and making them available for indexing.",
  "required": ["id", "url", "blobId", "type"],
  "properties": {
    "id": {
      "type": "string",
      "title": "ID",
      "maxLength": 128,
      "pattern": "^[A-Za-z0-9_\\-]+$"
    },
    "url": {
      "type": "string",
      "title": "Url to download a Blob from",
      "description": "Specifies the fully qualified HTTP/HTTPS endpoint URL to download the blob from. Supports template variables for dynamic URLs based on document fields or request parameters, such as `https://storage.example.com/files/{{id}}`. Must include the protocol (`http://` or `https://`)."
    },
    "blobId": {
      "type": "string",
      "title": "Blob id"
    },
    "type": {
      "type": "string",
      "enum": ["blob-download"],
      "default": "blob-download",
      "hints": ["readonly"]
    }
  },
  "additionalProperties": false,
  "category": "Other",
  "categoryPriority": 1,
  "unsafe": false
};

export const SchemaParamFields = ({schema}) => {
  const sanitize = str => {
    if (typeof str !== "string") return str;
    return str.replace(/^"(.*)"$/s, "$1").replace(/\\/g, "").replace(/"/g, "'");
  };
  const renderMd = str => {
    const s = sanitize(str);
    const text = (/[.!?]\)*$/).test(s) ? s : `${s}.`;
    return text.split(/(\*\*[^*]+\*\*|_[^_]+_|`[^`]+`)/g).map((part, i) => {
      if (part.startsWith("**")) return <strong key={i}>{part.slice(2, -2)}</strong>;
      if (part.startsWith("_")) return <em key={i}>{part.slice(1, -1)}</em>;
      if (part.startsWith("`")) return <code key={i}>{part.slice(1, -1)}</code>;
      return part;
    });
  };
  const {description, properties = {}, required: requiredProps = []} = schema;
  const visibleProps = useMemo(() => Object.entries(properties).filter(([, prop]) => !prop.hints?.includes("hidden")), [properties]);
  const renderProp = ([name, prop]) => {
    const isRequired = requiredProps.includes(name);
    const hasDefault = prop.default !== undefined;
    const rawDefault = prop.default;
    const hints = prop.hints || [];
    const isComplexDefault = hasDefault && (typeof rawDefault === "object" || typeof rawDefault === "string" && (rawDefault.length > 20 || rawDefault.includes('"')));
    const postBadges = [];
    if (prop.title) {
      postBadges.push(<><span className="text-stone-400 dark:text-stone-500">API property: </span>{name}</>);
    }
    const constraints = [];
    if (prop.minimum !== undefined && prop.maximum !== undefined) {
      constraints.push(`Range: ${prop.minimum} – ${prop.maximum}`);
    } else if (prop.minimum !== undefined) {
      constraints.push(`Min: ${prop.minimum}`);
    } else if (prop.maximum !== undefined) {
      constraints.push(`Max: ${prop.maximum}`);
    }
    if (prop.minLength !== undefined && prop.maxLength !== undefined) {
      constraints.push(`Length: ${prop.minLength} – ${prop.maxLength}`);
    } else if (prop.minLength !== undefined) {
      constraints.push(`Min length: ${prop.minLength}`);
    } else if (prop.maxLength !== undefined) {
      constraints.push(`Max length: ${prop.maxLength}`);
    }
    const fieldProps = {
      key: name,
      body: prop.title || name,
      type: prop.type,
      ...postBadges.length > 0 && ({
        post: postBadges
      }),
      ...isRequired && ({
        required: true
      }),
      ...!isComplexDefault && hasDefault ? {
        default: sanitize(String(rawDefault))
      } : {}
    };
    const isObject = prop.type === "object" && prop.properties;
    const isArrayOfObjects = prop.type === "array" && prop.items?.type === "object" && prop.items.properties;
    return <ParamField {...fieldProps}>
        {prop.description && <p>{renderMd(prop.description)}</p>}

        {prop.enum && <p>
            Allowed values: 
            {prop.enum.map((v, i) => <>{i > 0 && ", "}<code key={i}>{String(v)}</code></>)}
          </p>}

        {constraints.length > 0 && <p className="text-stone-500 dark:text-stone-400 text-sm">
            {constraints.join(" · ")}
          </p>}

        {isComplexDefault && <div className="flex">
            <p>
              <strong>Default:</strong>
            </p>
            <pre className="!my-0">
              <code>
                {JSON.stringify(rawDefault, null, 2)}
              </code>
            </pre>
          </div>}

        {isArrayOfObjects && <Expandable title="item properties">
            <SchemaParamFields schema={{
      properties: prop.items.properties,
      required: prop.items.required
    }} />
          </Expandable>}

        {isObject && <Expandable title="properties">
            <SchemaParamFields schema={{
      properties: prop.properties,
      required: prop.required
    }} />
          </Expandable>}
      </ParamField>;
  };
  return <div>
      {description && <p>{renderMd(description)}</p>}

      {visibleProps.map(renderProp)}
    </div>;
};

export const LwTemplate = ({title = "Key questions to get you started", icon = "sparkles", cta = "Powered by Agent Studio", linkHref = "https://lucidworks.com/demo/?utm_source=docs&utm_medium=referral&utm_campaign=docs_cta_ai"}) => {
  const [isLoaded, setIsLoaded] = useState(false);
  useEffect(() => {
    const timer = setTimeout(() => {
      setIsLoaded(true);
    }, 500);
    return () => clearTimeout(timer);
  }, []);
  return <div className="lw-template-container">
      <Card title={title} icon={icon}>
        {isLoaded && <span dangerouslySetInnerHTML={{
    __html: `<lw-template id="a029c1a9-28be-427e-b0e1-5d918920246a"></lw-template
            >`
  }} />}
        <Link href={linkHref} className="agent-studio-link text-left text-gray-600 gap-2 dark:text-gray-400 text-sm font-medium flex flex-row items-center hover:text-primary dark:hover:text-primary-light group-hover:text-primary group-hover:dark:text-primary-light">Powered by Lucidworks Agent Studio</Link>
      </Card>
    </div>;
};

[localhost link]: http://localhost:3000/docs/lucidworks-search/09-developer-documentation/config-specs/jobs/download-blob

[mintlify link]: https://doc.lucidworks.com/docs/lucidworks-search/09-developer-documentation/config-specs/jobs/download-blob

[old doc.lw link]: https://doc.lucidworks.com/managed-fusion/5.9/qyob7a

Lucidworks Search accepts large binary objects (blobs) and stores them in Solr. After a blob is uploaded to Lucidworks Search, you can download the blob to your local computer, modify it, and then upload it again to Lucidworks Search.

Lucidworks Search accepts the following types of blobs:

* Analytics catalog
* Connector plugin
* File
* Index stage plugin
* Managed Javascript (index)
* Managed Javascript (query)
* Open NLP model
* Other
* Query stage plugin
* Spark NLP model

For more information, see [Blob storage](/docs/lucidworks-search/04-move-data-in/blob-storage/overview).

To download a blob, sign in to Lucidworks Search and click **System > Blobs**. In the left panel, click the existing blob you want to download. When the blob information displays, click **Download**. Then you can open the file on your computer and modify it.

To upload the edited file, open the existing blob and click **Replace Blob** and select the edited file.

The properties of a blob can vary based on the type, but most include these:

* **id.** The unique identifier for the blob.
* **path.** The URL or location where the blob is stored.
* **dir.** The directory where the blob is located.
* **filename.** The filename of the blob.
* **contentType.** The type of content in the blog. Examples include application/zip, application/json, text/csv, text/plain, and application/java-archive.
* **size.** The size of the blob.
* **modifiedTime.** The last date and time the blob was modified in Unix epoch time in a `yyyy-mm-ddThh:mm:ssZ` format.
* **version.** The version of the blob.
* **metadata.** Additional data associated with the blob that varies based on the type of blob. Examples include drivers and resource type.

<LwTemplate />

## Configuration properties

<SchemaParamFields schema={schema} />