> ## 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

export const schema = {
  "type": "object",
  "title": "Download Blob",
  "description": "Download and update Blob",
  "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"
    },
    "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 formatDescription = str => {
    const s = sanitize(str);
    return (/[.!?]\)*$/).test(s) ? s : `${s}.`;
  };
  const {description, properties = {}, required: requiredProps = []} = schema;
  const visibleProps = useMemo(() => Object.entries(properties).filter(([, prop]) => !prop.hints?.includes("hidden")), [properties]);
  return <div>
      {description && <p>{formatDescription(description)}</p>}

      {visibleProps.map(([name, prop]) => {
    const isRequired = requiredProps.includes(name);
    const hasDefault = prop.default !== undefined;
    const rawDefault = prop.default;
    const isComplexDefault = hasDefault && (typeof rawDefault === "object" || typeof rawDefault === "string" && (rawDefault.length > 20 || rawDefault.includes('"')));
    const fieldProps = {
      key: name,
      body: prop.title || name,
      type: prop.type,
      ...prop.title && ({
        post: [<><span className="text-stone-400 dark:text-stone-500">API property: </span>{name}</>]
      }),
      ...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>{formatDescription(prop.description)}</p>}

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

            {isArrayOfObjects && <div className="flex">
              <p>
                <strong>Object attributes:</strong>
              </p>
              <pre className="!my-0">
                <code>
                  {'{\n'}
                  {Object.entries(prop.items.properties).map(([iname, iprop]) => <>
                      {`  ${iname}`}
                      {prop.items?.required?.includes(iname) && <span style={{
      color: 'red'
    }}> required</span>}
                      {`: {\n    display name: ${sanitize(iprop.title || '')}\n    type: ${iprop.type}\n  }\n`}
                    </>)}
                  {'}'}
                </code>
              </pre>
              </div>}

            {isObject && <Expandable title="properties">
                <SchemaParamFields schema={{
      properties: prop.properties,
      required: prop.required
    }} />
              </Expandable>}
          </ParamField>;
  })}
    </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/5/fusion/reference/config-ref/jobs/download-blob

[mintlify link]: https://doc.lucidworks.com/docs/5/fusion/reference/config-ref/jobs/download-blob

[old doc.lw link]: https://doc.lucidworks.com/fusion/5.9/390

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

Fusion 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/5/fusion/getting-data-in/blob-storage).

To download a blob, sign in to Fusion 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} />