///

### Flask 的 REST 框架 { #flask-rest-frameworks }

有幾個 Flask 的 REST 框架，但在投入時間調查後，我發現許多已停止維護或被棄置，且存在一些關鍵問題使之不適用。

### [Marshmallow](https://marshmallow.readthedocs.io/en/stable/) { #marshmallow }

API 系統需要的主要功能之一是資料「<dfn title="也稱為 marshalling、轉換">序列化</dfn>」，也就是把程式中的資料（Python）轉成能透過網路傳輸的形式。例如，將含有資料庫資料的物件轉成 JSON 物件、把 `datetime` 物件轉成字串等等。

    @Resource
    private FileConfigPager fileConfigPager;

    /** Service for role type operations. */
    @Resource
    private RoleTypeService roleTypeService;

    /** Service for label type operations. */
    @Resource
    private LabelTypeService labelTypeService;

    // ===================================================================================

         * descriptor and a corresponding artifact file. The root artifact on the other hand is only used
         * as a label for the root node of the graph in case no root dependency was specified. As such, the configured
         * root artifact is ignored if {@link #root(DependencyCoordinates)} has been set.
         *

		if err != nil && err != io.EOF && err != io.ErrUnexpectedEOF {
			// If there is a disconnection before globalNetPerfMinDuration (we give a margin of error of 1 sec)
			// would mean the network is not stable. Logging here will help in debugging network issues.
			if time.Since(connectTime) < (globalNetPerfMinDuration - time.Second) {
				adminLogIf(ctx, err)
			}
		}
		if err != nil {
			if errors.Is(err, io.EOF) {

ss\":{\"isolation\":\"DefaultDeny\"}}" ``` With NetworkPolicy enabled, traffic will be limited to just port 9000. For more precise policy, set `networkPolicy.allowExternal=true`. This will only allow pods with the generated client label to connect to MinIO. This label will be displayed in the output of a successful install. ### Existing secret Instead of having this chart create the secret for you, you can supply a preexisting secret, much like an existing PersistentVolumeClai. First, create the...

ss\":{\"isolation\":\"DefaultDeny\"}}" ``` With NetworkPolicy enabled, traffic will be limited to just port 9000. For more precise policy, set `networkPolicy.allowExternal=true`. This will only allow pods with the generated client label to connect to MinIO. This label will be displayed in the output of a successful install. ### Existing secret Instead of having this chart create the secret for you, you can supply a preexisting secret, much like an existing PersistentVolumeClai. First, create the...

ss\":{\"isolation\":\"DefaultDeny\"}}" ``` With NetworkPolicy enabled, traffic will be limited to just port 9000. For more precise policy, set `networkPolicy.allowExternal=true`. This will only allow pods with the generated client label to connect to MinIO. This label will be displayed in the output of a successful install. ### Existing secret Instead of having this chart create the secret for you, you can supply a preexisting secret, much like an existing PersistentVolumeClai. First, create the...

ss\":{\"isolation\":\"DefaultDeny\"}}" ``` With NetworkPolicy enabled, traffic will be limited to just port 9000. For more precise policy, set `networkPolicy.allowExternal=true`. This will only allow pods with the generated client label to connect to MinIO. This label will be displayed in the output of a successful install. ### Existing secret Instead of having this chart create the secret for you, you can supply a preexisting secret, much like an existing PersistentVolumeClai. First, create the...

ss\":{\"isolation\":\"DefaultDeny\"}}" ``` With NetworkPolicy enabled, traffic will be limited to just port 9000. For more precise policy, set `networkPolicy.allowExternal=true`. This will only allow pods with the generated client label to connect to MinIO. This label will be displayed in the output of a successful install. ### Existing secret Instead of having this chart create the secret for you, you can supply a preexisting secret, much like an existing PersistentVolumeClai. First, create the...

ss\":{\"isolation\":\"DefaultDeny\"}}" ``` With NetworkPolicy enabled, traffic will be limited to just port 9000. For more precise policy, set `networkPolicy.allowExternal=true`. This will only allow pods with the generated client label to connect to MinIO. This label will be displayed in the output of a successful install. ### Existing secret Instead of having this chart create the secret for you, you can supply a preexisting secret, much like an existing PersistentVolumeClai. First, create the...