"io"
	"sync"
	"sync/atomic"
	"time"

	"github.com/google/uuid"
	"github.com/minio/madmin-go/v3"
	"github.com/minio/pkg/v3/wildcard"
	"github.com/tinylib/msgp/msgp"
)

const (
	mrfOpsQueueSize = 100000
)

const (
	healDir              = ".heal"
	healMRFDir           = bucketMetaPrefix + SlashSeparator + healDir + SlashSeparator + "mrf"
	healMRFMetaFormat    = 1
	healMRFMetaVersionV1 = 1
)

 */
class TaskRunner(
  val backend: Backend,
  internal val logger: Logger = TaskRunner.logger,
) : Lockable {
  private var nextQueueName = 10000
  private var coordinatorWaiting = false
  private var coordinatorWakeUpAt = 0L

  /**
   * When we need a new thread to run tasks, we call [Backend.execute]. A few microseconds later we

    @Override
    public SampleElements<Entry<String, Collection<Integer>>> samples() {
      return new SampleElements<>(
          mapEntry("one", ImmutableSet.of(10000)),
          mapEntry("two", ImmutableSet.of(-2000)),
          mapEntry("three", ImmutableSet.of(300)),
          mapEntry("four", ImmutableSet.of(-40)),
          mapEntry("five", ImmutableSet.of(5)));
    }

	}{
		{"bytes=0-", 0, 10},
		{"bytes=1-", 1, 9},
		{"bytes=0-9", 0, 10},
		{"bytes=1-10", 1, 9},
		{"bytes=1-1", 1, 1},
		{"bytes=2-5", 2, 4},
		{"bytes=-5", 5, 5},
		{"bytes=-1", 9, 1},
		{"bytes=-1000", 0, 10},
	}
	for i, testCase := range validRangeSpecs {
		rs, err := parseRequestRangeSpec(testCase.spec)
		if err != nil {
			t.Errorf("unexpected err: %v", err)
		}
		o, l, err := rs.GetOffsetLength(resourceSize)

// via its Init method.
func newTransitionState(ctx context.Context) *transitionState {
	return &transitionState{
		transitionCh: make(chan transitionTask, 100000),
		ctx:          ctx,
		killCh:       make(chan struct{}),
		lastDayStats: make(map[string]*lastDayTierStats),
	}
}

// Init initializes t with given objAPI and instantiates the configured number

        assertEquals(0x0010, response.getAttributes());
        // getLastWriteTime returns lastWriteTime (from readUTime) + serverTimeZoneOffset
        // readUTime multiplies the seconds value by 1000, and writeUTime divides milliseconds by 1000
        // So the round-trip should preserve the milliseconds value
        assertEquals(sampleTimeMillis + serverTimeZoneOffset, response.getLastWriteTime());
        assertEquals(1024, response.getSize());

  - `HeadObject`
  - `GetObject`
  - `ListObjectsV2`
- If the ZIP file directory isn't located within the last 100MB the file will not be parsed.
- A maximum of 100M inside a single zip is allowed. However, a reasonable limit of 100,000 files inside a single ZIP archive is recommended for best performance and memory usage trade-off.

## Content-Type

 * cache instances created by {@code CacheBuilder} will not perform any type of eviction.
 *
 * <p>Usage example:
 *
 * {@snippet :
 * LoadingCache<Key, Graph> graphs = CacheBuilder.newBuilder()
 *     .maximumSize(10000)
 *     .expireAfterWrite(Duration.ofMinutes(10))
 *     .removalListener(MY_LISTENER)
 *     .build(
 *         new CacheLoader<Key, Graph>() {
 *           public Graph load(Key key) throws AnyException {

    Cache<Integer, Integer> cache =
        CacheBuilder.newBuilder().expireAfterWrite(20000, MILLISECONDS).ticker(fakeTicker).build();

    cache.put(654, 2675);
    fakeTicker.advance(10000, MILLISECONDS);
    cache.put(2456, 56);
    cache.put(2, 15);

    fakeTicker.advance(10001, MILLISECONDS);

    assertThat(cache.asMap().containsValue(15)).isTrue();

            long diff7 = result7 - result0;
            assertTrue("1 day should be approximately ONE_DAY_IN_MILLIS", Math.abs(diff1 - Constants.ONE_DAY_IN_MILLIS) < 10000);
            assertTrue("7 days should be approximately 7 * ONE_DAY_IN_MILLIS", Math.abs(diff7 - 7 * Constants.ONE_DAY_IN_MILLIS) < 10000);
        } catch (Exception e) {
            // If method doesn't exist or cannot be accessed, just verify it doesn't crash