X-Xss-Protection: 1; mode=block
Date: Tue, 21 Jul 2020 00:36:14 GMT
```

### Checking cluster health for maintenance

You may query the cluster probe endpoint to check if the node which received the request can be taken down for maintenance, if the server replies back '412 Precondition Failed' this means you will lose HA. '200 OK' means you are okay to proceed.

```
curl http://minio1:9001/minio/health/cluster?maintenance=true

import java.util.Iterator;
import java.util.NoSuchElementException;

import org.codelibs.core.exception.ClUnsupportedOperationException;

/**
 * Adaptor that makes an array into an {@link Iterator}.
 * <p>
 * Usage example:
 * </p>
 *
 * <pre>
 * import static org.codelibs.core.collection.ArrayIterator.*;
 *
 * String[] array = ...;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;

/**
 * A test which demonstrates maven's recursive inheritance where
 * a distinct value is taken from each parent contributing to
 * the final model of the project being assembled. There is no
 * overriding going on amongst the models being used in this test:
 * each model in the lineage is providing a value that is not present

    val response1 = responses.take()
    assertThat(response1).isEqualTo("")
    assertThat(server.takeRequest().exchangeIndex).isEqualTo(0)

    // Now make the second request which will restrict the first HTTP/2 connection from creating new
    // streams.
    client.newCall(request).enqueue(callback)
    val response2 = responses.take()
    assertThat(response2).isEqualTo("DEF")

    )
  }

  // Example taken from twitter/hpack DecoderTest.testUnusedIndex
  @Test
  fun readIndexedHeaderFieldIndex0() {
    bytesIn.writeByte(0x80) // == Indexed - Add idx = 0
    assertFailsWith<IOException> {
      hpackReader!!.readHeaders()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("index == 0")
    }
  }

  // Example taken from twitter/hpack DecoderTest.testIllegalIndex

 * artifact publishing by reducing the artifacts and packaging reports that consist of multiple files.
 *
 * Reducing the number of reports also makes it easier to find the important ones when analysing a failed build in
 * TeamCity.
 */
val testFilesCleanup = project.extensions.create<TestFileCleanUpExtension>("testFilesCleanup").apply {
    reportOnly.convention(false)
}

// initialized when the provided function returns nil.

// Init represents the structure.
type Init struct {
	done uint32
	m    sync.Mutex
}

// Do is similar to sync.Once.Do - makes one successful
// call to the function. ie, it invokes the function
// if it is not successful yet.
func (l *Init) Do(f func() error) error {
	if atomic.LoadUint32(&l.done) == 0 {
		return l.do(f)
	}
	return nil
}

 * While it would be more technically correct to do so, the effort/complexity does not warrant it, since for the expected usage it makes
 * no difference.
 */

public class RemoveWarnings implements RestTestTransformByParentObject {

    private final Set<String> warnings;
    private String testName;

    /**

      prop(FollowUpDecision::nextRequest).isNotNull()
    }
  }

  /**
   * Auth requires follow-ups. Unlike redirects, the auth follow-up also has a request body. This
   * test makes a single call with two duplex requests!
   */
  @Test
  fun duplexWithAuthChallenge() {
    enableProtocol(Protocol.HTTP_2)
    val credential = basic("jesse", "secret")
    client =
      client

    /**
     * Performs MAC signing of the SMB. This is done as follows.
     * The signature field of the SMB is overwritten with the sequence number;
     * The MD5 digest of the MAC signing key + the entire SMB is taken;
     * The first 8 bytes of this are placed in the signature field.
     *
     * @param data
     *            The data.
     * @param offset
     *            The starting offset at which the SMB header begins.