Vendor dependencies with dep

vendor/github.com/minio/minio-go/api-put-object-common.go

@@ -0,0 +1,118 @@
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package minio
+
+import (
+	"hash"
+	"io"
+	"math"
+	"os"
+
+	"github.com/minio/minio-go/pkg/s3utils"
+)
+
+// Verify if reader is *os.File
+func isFile(reader io.Reader) (ok bool) {
+	_, ok = reader.(*os.File)
+	return
+}
+
+// Verify if reader is *minio.Object
+func isObject(reader io.Reader) (ok bool) {
+	_, ok = reader.(*Object)
+	return
+}
+
+// Verify if reader is a generic ReaderAt
+func isReadAt(reader io.Reader) (ok bool) {
+	_, ok = reader.(io.ReaderAt)
+	return
+}
+
+// optimalPartInfo - calculate the optimal part info for a given
+// object size.
+//
+// NOTE: Assumption here is that for any object to be uploaded to any S3 compatible
+// object storage it will have the following parameters as constants.
+//
+//  maxPartsCount - 10000
+//  minPartSize - 64MiB
+//  maxMultipartPutObjectSize - 5TiB
+//
+func optimalPartInfo(objectSize int64) (totalPartsCount int, partSize int64, lastPartSize int64, err error) {
+	// object size is '-1' set it to 5TiB.
+	if objectSize == -1 {
+		objectSize = maxMultipartPutObjectSize
+	}
+	// object size is larger than supported maximum.
+	if objectSize > maxMultipartPutObjectSize {
+		err = ErrEntityTooLarge(objectSize, maxMultipartPutObjectSize, "", "")
+		return
+	}
+	// Use floats for part size for all calculations to avoid
+	// overflows during float64 to int64 conversions.
+	partSizeFlt := math.Ceil(float64(objectSize / maxPartsCount))
+	partSizeFlt = math.Ceil(partSizeFlt/minPartSize) * minPartSize
+	// Total parts count.
+	totalPartsCount = int(math.Ceil(float64(objectSize) / partSizeFlt))
+	// Part size.
+	partSize = int64(partSizeFlt)
+	// Last part size.
+	lastPartSize = objectSize - int64(totalPartsCount-1)*partSize
+	return totalPartsCount, partSize, lastPartSize, nil
+}
+
+// hashCopyN - Calculates chosen hashes up to partSize amount of bytes.
+func hashCopyN(hashAlgorithms map[string]hash.Hash, hashSums map[string][]byte, writer io.Writer, reader io.Reader, partSize int64) (size int64, err error) {
+	hashWriter := writer
+	for _, v := range hashAlgorithms {
+		hashWriter = io.MultiWriter(hashWriter, v)
+	}
+
+	// Copies to input at writer.
+	size, err = io.CopyN(hashWriter, reader, partSize)
+	if err != nil {
+		// If not EOF return error right here.
+		if err != io.EOF {
+			return 0, err
+		}
+	}
+
+	for k, v := range hashAlgorithms {
+		hashSums[k] = v.Sum(nil)
+	}
+	return size, err
+}
+
+// getUploadID - fetch upload id if already present for an object name
+// or initiate a new request to fetch a new upload id.
+func (c Client) newUploadID(bucketName, objectName string, metaData map[string][]string) (uploadID string, err error) {
+	// Input validation.
+	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
+		return "", err
+	}
+	if err := s3utils.CheckValidObjectName(objectName); err != nil {
+		return "", err
+	}
+
+	// Initiate multipart upload for an object.
+	initMultipartUploadResult, err := c.initiateMultipartUpload(bucketName, objectName, metaData)
+	if err != nil {
+		return "", err
+	}
+	return initMultipartUploadResult.UploadID, nil
+}