* typically false on Windows.
 *
 * If this returns false we won't permit simultaneous reads and writes. When writes commit we need
 * to delete the previous snapshots, and that won't succeed if the file is open. (We do permit
 * multiple simultaneous reads.)
 *
 * @param file a file in the directory to check. This file shouldn't already exist!
 */

	}

	if cap(t.requestsPool) != apiRequestsMaxPerNode {
		// Only replace if needed.
		// Existing requests will use the previous limit,
		// but new requests will use the new limit.
		// There will be a short overlap window,
		// but this shouldn't last long.
		t.requestsPool = make(chan struct{}, apiRequestsMaxPerNode)
	}

        LogStream.setInstance(testStream);
        LogStream instance2 = LogStream.getInstance();
        assertNotNull(instance2);

        // Should be different instances since setInstance replaces the previous one
        assertNotSame(instance1, instance2);
        // Getting instance again should return the same as instance2
        assertSame(instance2, LogStream.getInstance());
    }

    @Test

        addCreateContext(context);
    }

    /**
     * Add a durable handle reconnect context to this request
     * @param fileId the 16-byte file ID from the previous open
     */
    public void addDurableHandleReconnectContext(byte[] fileId) {
        addCreateContext(new jcifs.internal.smb2.persistent.DurableHandleReconnect(fileId));
    }

    /**

    return new JavaIoCreator();
  }

  /**
   * Creates the permissions normally used for Windows filesystems, looking up the user afresh, even
   * if previous calls have initialized the {@code PermissionSupplier} fields.
   *
   * <p>This lets us test the effects of different values of the {@code user.name} system property
   * without needing a separate VM or classloader.
   */

 * {@code Comparator} doesn't: it evaluates all the parameters of all the {@code .compare} calls,
 * even when the result of the comparison is already known from previous {@code .compare} calls.
 * That can be expensive.
 *
 * @author Mark Davis
 * @author Kevin Bourrillion
 * @since 2.0
 */
@GwtCompatible
public abstract class ComparisonChain {
  private ComparisonChain() {}

          }
          canRemoveOrSet = true;
          return forwardIterator.previous();
        }

        @Override
        public int nextIndex() {
          return reversePosition(forwardIterator.nextIndex());
        }

        @Override
        @ParametricNullness
        public T previous() {
          if (!hasPrevious()) {
            throw new NoSuchElementException();
          }

        }
    }

    /**
     * Attempts to redirect to the search page with preserved search parameters.
     *
     * This method checks if there are saved search parameters from a previous
     * session and redirects the user to the search page with those parameters
     * restored. This provides a seamless user experience after authentication.
     *

- [Configuring etcd](https://github.com/minio/minio/blob/master/docs/sts/etcd.md)

### Setup MinIO with Identity Provider

Make sure we have followed the previous step and configured each software independently, once done we can now proceed to use MinIO STS API and MinIO server to use these credentials to perform object API operations.

#### KeyCloak

```
export MINIO_ROOT_USER=minio

# Simple OAuth2 with Password and Bearer { #simple-oauth2-with-password-and-bearer }

Now let's build from the previous chapter and add the missing parts to have a complete security flow.

## Get the `username` and `password` { #get-the-username-and-password }

We are going to use **FastAPI** security utilities to get the `username` and `password`.