private void checkDataSourceConfiguration()

in shardingsphere-ui-backend/src/main/java/org/apache/shardingsphere/ui/servcie/impl/ShardingSchemaServiceImpl.java [118:130]

• 11 lines of code
• 3 McCabe index (conditional complexity)

    private void checkDataSourceConfiguration(final String configData) {
        try {
            Map<String, Map<String, Object>> yamlDataSources = YamlEngine.unmarshal(configData, Map.class);
            Map<String, DataSourceConfiguration> dataSourceConfigs = yamlDataSources.isEmpty() ? new HashMap<>()
                    : yamlDataSources.entrySet().stream().collect(Collectors.toMap(
                    Map.Entry::getKey, entry -> new YamlDataSourceConfigurationSwapper().swapToDataSourceConfiguration(entry.getValue()), (oldValue, currentValue) -> oldValue, LinkedHashMap::new));
            Preconditions.checkState(!dataSourceConfigs.isEmpty());
            // CHECKSTYLE:OFF
        } catch (final Exception ex) {
            // CHECKSTYLE:ON
            throw new IllegalArgumentException("data source configuration is invalid.", ex);
        }
    }