private ConfigManager()

in frontend/server/src/main/java/com/amazonaws/ml/mms/util/ConfigManager.java [107:166]
50 lines of code
11 McCabe index (conditional complexity)

    private ConfigManager(Arguments args) {
        prop = new Properties();

        String filePath = System.getenv("MMS_CONFIG_FILE");
        if (filePath == null) {
            filePath = args.getMmsConfigFile();
            if (filePath == null) {
                filePath = System.getProperty("mmsConfigFile", "config.properties");
            }
        }

        File file = new File(filePath);
        if (file.exists()) {
            try (FileInputStream stream = new FileInputStream(file)) {
                prop.load(stream);
                prop.put("mmsConfigFile", filePath);
            } catch (IOException e) {
                throw new IllegalStateException("Unable to read configuration file", e);
            }
        }

        resolveEnvVarVals(prop);
        String modelStore = args.getModelStore();
        if (modelStore != null) {
            prop.setProperty(MMS_MODEL_STORE, modelStore);
        }

        String[] models = args.getModels();
        if (models != null) {
            prop.setProperty(MMS_LOAD_MODELS, String.join(",", models));
        }

        prop.setProperty(
                MMS_NUMBER_OF_GPU,
                String.valueOf(
                        Integer.min(
                                getAvailableGpu(),
                                getIntProperty(MMS_NUMBER_OF_GPU, Integer.MAX_VALUE))));

        String pythonExecutable = args.getPythonExecutable();
        if (pythonExecutable != null) {
            prop.setProperty("PYTHON_EXECUTABLE", pythonExecutable);
        }

        try {
            InetAddress ip = InetAddress.getLocalHost();
            hostName = ip.getHostName();
        } catch (UnknownHostException e) {
            hostName = "Unknown";
        }

        if (Boolean.parseBoolean(prop.getProperty(MMS_ASYNC_LOGGING))) {
            enableAsyncLogging();
        }

        if (Boolean.parseBoolean(getEnableEnvVarsConfig())) {
            // Environment variables have higher precedence over the config file variables
            setSystemVars();
        }
    }