The middleware responds to two particular types of HTTP request...

### CORS preflight requests

These are any `OPTIONS` request with `Origin` and `Access-Control-Request-Method` headers.

In this case the middleware will intercept the incoming request and respond with appropriate CORS headers, and either a `200` or `400` response for informational purposes.

### Simple requests

   * <p>The implementation deviates from the {@code ExecutorService} specification with regards to
   * the {@code shutdownNow} method. First, "best-effort" with regards to canceling running tasks is
   * implemented as "no-effort". No interrupts or other attempts are made to stop threads executing
   * tasks. Second, the returned list will always be empty, as any submitted task is considered to

 * response.
 */
class BridgeInterceptor(private val cookieJar: CookieJar) : Interceptor {
  @Throws(IOException::class)
  override fun intercept(chain: Interceptor.Chain): Response {
    val userRequest = chain.request()
    val requestBuilder = userRequest.newBuilder()

    val body = userRequest.body
    if (body != null) {

- All versioned buckets maintain the same order for "versions" for each object after being decommissioned to the other pools.
- A pool interrupted during the decommission process, such as for a cluster restart, resumes from where it left off.

## How to decommission a pool

```
λ mc admin decommission start alias/ http://minio{1...2}/data{1...4}
```

            executorService.awaitTermination(60, TimeUnit.SECONDS);
        } catch (final InterruptedException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Interrupted.", e);
            }
        } finally {
            executorService.shutdownNow();
        }
        return totalCount;
    }

import okio.Timeout
import okio.buffer

/** Serves requests from the cache and writes responses to the cache. */
class CacheInterceptor(internal val cache: Cache?) : Interceptor {
  @Throws(IOException::class)
  override fun intercept(chain: Interceptor.Chain): Response {
    val call = chain.call()
    val cacheCandidate = cache?.get(chain.request().requestForCache())

    val now = System.currentTimeMillis()

 * [IOException] if the call was canceled.
 */
class RetryAndFollowUpInterceptor(private val client: OkHttpClient) : Interceptor {
  @Throws(IOException::class)
  override fun intercept(chain: Interceptor.Chain): Response {
    val realChain = chain as RealInterceptorChain
    var request = chain.request
    val call = realChain.call
    var followUpCount = 0
    var priorResponse: Response? = null

            invokerRequest.logger().error("IO problem while executing command: " + cmdAndArguments, e);
            return 127;
        } catch (InterruptedException e) {
            invokerRequest.logger().error("Interrupted while executing command: " + cmdAndArguments, e);
            return 127;
        }
    }

    protected void validate(ForkedMavenInvokerRequest invokerRequest) throws InvokerException {}

   * {@code setUpRan} parameter is set true by the {@code setUp} that every test case is supposed to
   * have registered, and set false by the {@code tearDown}. We use a dynamic proxy to intercept all
   * of the {@code Map} method calls and check that {@code setUpRan} is true.
   */
  private static class CheckSetUpHashMapGenerator extends WrappedHashMapGenerator {
    private final AtomicBoolean setUpRan;

      replaceWith = ReplaceWith(expression = "level"),
      level = DeprecationLevel.ERROR,
    )
    fun getLevel(): Level = level

    @Throws(IOException::class)
    override fun intercept(chain: Interceptor.Chain): Response {
      val level = this.level

      val request = chain.request()
      if (level == Level.NONE) {
        return chain.proceed(request)
      }