public HttpServiceResponse handle()

in bookkeeper-server/src/main/java/org/apache/bookkeeper/server/http/service/ListDiskFilesService.java [60:132]
58 lines of code
23 McCabe index (conditional complexity)

    public HttpServiceResponse handle(HttpServiceRequest request) throws Exception {
        HttpServiceResponse response = new HttpServiceResponse();
        Map<String, String> params = request.getParams();

        if (HttpServer.Method.GET == request.getMethod()) {
            /**
             * output:
             *  {
             *    "journal files" : "filename \t ...",
             *    "entrylog files" : "filename \t ...",
             *    "index files" : "filename \t ..."
             *  }
             */
            Map<String, String> output = Maps.newHashMap();

            boolean journal = params != null
                && params.containsKey("file_type")
                && params.get("file_type").equals("journal");
            boolean entrylog = params != null
                && params.containsKey("file_type")
                && params.get("file_type").equals("entrylog");
            boolean index = params != null
                && params.containsKey("file_type")
                && params.get("file_type").equals("index");
            boolean all = false;

            if (!journal && !entrylog && !index && !all) {
                all = true;
            }

            if (all || journal) {
                File[] journalDirs = conf.getJournalDirs();
                List<File> journalFiles = listFilesAndSort(journalDirs, "txn");
                StringBuilder files = new StringBuilder();
                for (File journalFile : journalFiles) {
                    files.append(journalFile.getName()).append("\t");
                }
                output.put("journal files", files.toString());
            }

            if (all || entrylog) {
                File[] ledgerDirs = conf.getLedgerDirs();
                List<File> ledgerFiles = listFilesAndSort(ledgerDirs, "log");
                StringBuilder files = new StringBuilder();
                for (File ledgerFile : ledgerFiles) {
                    files.append(ledgerFile.getName()).append("\t");
                }
                output.put("entrylog files", files.toString());
            }

            if (all || index) {
                File[] indexDirs = (conf.getIndexDirs() == null) ? conf.getLedgerDirs() : conf.getIndexDirs();
                List<File> indexFiles = listFilesAndSort(indexDirs, "idx");
                StringBuilder files = new StringBuilder();
                for (File indexFile : indexFiles) {
                    files.append(indexFile.getName()).append("\t");
                }
                output.put("index files", files.toString());
            }

            String jsonResponse = JsonUtil.toJson(output);
            if (LOG.isDebugEnabled()) {
                LOG.debug("output body:" + jsonResponse);
            }
            response.setBody(jsonResponse);
            response.setCode(HttpServer.StatusCode.OK);
            return response;
        } else {
            response.setCode(HttpServer.StatusCode.NOT_FOUND);
            response.setBody("Not found method. Should be GET method");
            return response;
        }
    }