!!! info
    如果你使用 Kubernetes，这可能是 <a href="https://kubernetes.io/docs/concepts/workloads/pods/init-containers/" class="external-link" target="_blank">Init Container</a>。

如果在你的用例中，运行前面的步骤**并行多次**没有问题（例如，如果你没有运行数据库迁移，而只是检查数据库是否已准备好），那么你也可以将它们放在开始主进程之前在每个容器中。

### 单容器

  val callTimeoutMillis: Int = builder.callTimeout

  /** Default connect timeout (in milliseconds). The default is 10 seconds. */
  @get:JvmName("connectTimeoutMillis")
  val connectTimeoutMillis: Int = builder.connectTimeout

  /** Default read timeout (in milliseconds). The default is 10 seconds. */
  @get:JvmName("readTimeoutMillis")
  val readTimeoutMillis: Int = builder.readTimeout

In both cases, it will have:

* An optional `q` query parameter that is a `str`.
* A `skip` query parameter that is an `int`, with a default of `0`.
* A `limit` query parameter that is an `int`, with a default of `100`.

In both cases the data will be converted, validated, documented on the OpenAPI schema, etc.

## Use it

- Added a new `--init-only` command line flag to `kube-proxy`. Setting the flag makes `kube-proxy` perform its initial configuration that requires privileged mode, and then exit. The `--init-only` mode is intended to be executed in a privileged init container, so that the main container may run with a stricter `securityContext`. ([#120864](https://github.com/kubernetes/kubernetes/pull/120864),...

                    bindings.put(
                        METHOD_FOR_FIR_FUNCTION,
                        fir,
                        Method(if (it.isConstructor) SpecialNames.INIT.asString() else it.name, getAsmMethodSignatureWithCorrection(it))
                    )
                }
                is FirProperty -> {
                    if (fir.hasBackingField || fir.delegateFieldSymbol != null) {

      object : AbstractList<Protocol?>() {
        override val size: Int = 1

        override fun get(index: Int) = Protocol.HTTP_1_1

        override fun contains(element: Protocol?): Boolean {
          if (element == null) throw NullPointerException()
          return super.contains(element)
        }

        override fun indexOf(element: Protocol?): Int {
          if (element == null) throw NullPointerException()

* Создайте директорию `app` и перейдите в неё.
* Создайте пустой файл `__init__.py`.
* Создайте файл `main.py` и заполните его:

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}

  fun tearDown() {
    taskQueue.shutdown()
    taskQueue.idleLatch().await(10, TimeUnit.SECONDS)
  }

  @Synchronized fun sentPingCount(): Int = sentPingCount

  @Synchronized fun receivedPingCount(): Int = receivedPingCount

  @Synchronized fun receivedPongCount(): Int = receivedPongCount

  @Throws(IOException::class)
  override fun onReadMessage(text: String) {
    listener.onMessage(this, text)
  }

  init {
    // Put a floor on the keep alive duration, otherwise cleanup will spin loop.
    require(keepAliveDuration > 0L) { "keepAliveDuration <= 0: $keepAliveDuration" }
  }

  fun idleConnectionCount(): Int {
    return connections.count {
      it.withLock { it.calls.isEmpty() }
    }
  }

  fun connectionCount(): Int {
    return connections.size
  }

  /**

     */
    private fun isFreshnessLifetimeHeuristic(): Boolean {
      return cacheResponse!!.cacheControl.maxAgeSeconds == -1 && expires == null
    }

    init {
      if (cacheResponse != null) {
        this.sentRequestMillis = cacheResponse.sentRequestAtMillis
        this.receivedResponseMillis = cacheResponse.receivedResponseAtMillis
        val headers = cacheResponse.headers