}

    private static final Logger logger = LogManager.getLogger(SearchEngineClient.class);

    private static final String DOC_INDEX = "fess";

    private static final String LOG_INDEX_PREFIX = "fess_log";

    private static final String USER_INDEX_PREFIX = "fess_user";

    private static final String CONFIG_INDEX_PREFIX = "fess_config";

    /** OpenSearch runner for managing the embedded search engine */

index.document.crawler.filter.number_of_replicas=1
# Index name for configuration data.
index.config.index=fess_config
# Index name for user data.
index.user.index=fess_user
# Index name for log data.
index.log.index=fess_log
# Prefix for dictionary index names.
index.dictionary.prefix=

# doc management

# Array-type fields for admin in the index.
index.admin.array.fields=lang,role,label,anchor,virtual_host

    String INDEX_CONFIG_INDEX = "index.config.index";

    /** The key of the configuration. e.g. fess_user */
    String INDEX_USER_INDEX = "index.user.index";

    /** The key of the configuration. e.g. fess_log */
    String INDEX_LOG_INDEX = "index.log.index";

    /** The key of the configuration. e.g.  */
    String INDEX_DICTIONARY_PREFIX = "index.dictionary.prefix";

import json

with open('documents.json', 'r') as infile, \
     open('fess-documents.json', 'w') as outfile:
    for line in infile:
        doc = json.loads(line)

        # Transform to Fess format
        fess_doc = {
            "url": doc.get("url", ""),
            "title": doc.get("title", ""),
            "content": doc.get("content", ""),
            "mimetype": doc.get("mimetype", "text/html"),