"github.com/minio/pkg/v3/env"
	"github.com/minio/pkg/v3/policy"
)

var (
	errRebalanceDecommissionAlreadyRunning = errors.New("Rebalance cannot be started, decommission is already in progress")
	errDecommissionRebalanceAlreadyRunning = errors.New("Decommission cannot be started, rebalance is already in progress")
)

func (a adminAPIHandlers) StartDecommission(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	EndTime   time.Time   `msg:"stopTs"`  // Time at which rebalance operation completed or rebalance-stop was called
	Status    rebalStatus `msg:"status"`  // Current state of rebalance operation. One of Started|Stopped|Completed|Failed.
}

// rebalanceMeta contains information pertaining to an ongoing rebalance operation.
type rebalanceMeta struct {
	cancel          context.CancelFunc `msg:"-"` // to be invoked on rebalance-stop

		sha256hex = ""
	}

	var forceMD5 []byte
	// Optimization: If SSE-KMS and SSE-C did not request Content-Md5. Use uuid as etag. Optionally enable this also
	// for server that is started with `--no-compat`.
	if !etag.ContentMD5Requested(r.Header) && (crypto.S3KMS.IsEncrypted(mi.UserDefined) || crypto.SSEC.IsRequested(r.Header) || !globalServerCtxt.StrictS3Compat) {
		forceMD5 = mustGetUUIDBytes()
	}

		err := fmt.Errorf("unexpected part result count: %d, want %d", len(partInfoFiles), len(parts))
		bugLogIf(ctx, err)
		return oi, toObjectErr(err, bucket, object)
	}

	// Checksum type set when upload started.
	var checksumType hash.ChecksumType
	if cs := fi.Metadata[hash.MinIOMultipartChecksum]; cs != "" {
		checksumType = hash.NewChecksumType(cs, fi.Metadata[hash.MinIOMultipartChecksumType])

		sha256hex = ""
	}

	var forceMD5 []byte
	// Optimization: If SSE-KMS and SSE-C did not request Content-Md5. Use uuid as etag. Optionally enable this also
	// for server that is started with `--no-compat`.
	if !etag.ContentMD5Requested(r.Header) && (crypto.S3KMS.IsRequested(r.Header) || crypto.SSEC.IsRequested(r.Header) || !globalServerCtxt.StrictS3Compat) {
		forceMD5 = mustGetUUIDBytes()
	}

INFO:     Will watch for changes in these directories: ['/home/user/code/awesomeapp']
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [2248755] using WatchFiles
INFO:     Started server process [2248757]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
```

### Refactors