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author | Wim <wim@42.be> | 2021-10-16 23:11:32 +0200 |
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committer | Wim <wim@42.be> | 2021-10-16 23:23:24 +0200 |
commit | 20f6c05ec50739d31f4dbe9fde0d223f2c43f6e8 (patch) | |
tree | 230edca06449a8d1755f08aabf45a03e07e6f17c /vendor/github.com/minio/minio-go/v7/api-get-object-file.go | |
parent | 57fce93af7f64f025cec6f3ed6088163086bc9fe (diff) | |
download | matterbridge-msglm-20f6c05ec50739d31f4dbe9fde0d223f2c43f6e8.tar.gz matterbridge-msglm-20f6c05ec50739d31f4dbe9fde0d223f2c43f6e8.tar.bz2 matterbridge-msglm-20f6c05ec50739d31f4dbe9fde0d223f2c43f6e8.zip |
Update vendor
Diffstat (limited to 'vendor/github.com/minio/minio-go/v7/api-get-object-file.go')
-rw-r--r-- | vendor/github.com/minio/minio-go/v7/api-get-object-file.go | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/vendor/github.com/minio/minio-go/v7/api-get-object-file.go b/vendor/github.com/minio/minio-go/v7/api-get-object-file.go new file mode 100644 index 00000000..bccff457 --- /dev/null +++ b/vendor/github.com/minio/minio-go/v7/api-get-object-file.go @@ -0,0 +1,127 @@ +/* + * MinIO Go Library for Amazon S3 Compatible Cloud Storage + * Copyright 2015-2017 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 ( + "context" + "io" + "os" + "path/filepath" + + "github.com/minio/minio-go/v7/pkg/s3utils" +) + +// FGetObject - download contents of an object to a local file. +// The options can be used to specify the GET request further. +func (c Client) FGetObject(ctx context.Context, bucketName, objectName, filePath string, opts GetObjectOptions) error { + // Input validation. + if err := s3utils.CheckValidBucketName(bucketName); err != nil { + return err + } + if err := s3utils.CheckValidObjectName(objectName); err != nil { + return err + } + + // Verify if destination already exists. + st, err := os.Stat(filePath) + if err == nil { + // If the destination exists and is a directory. + if st.IsDir() { + return errInvalidArgument("fileName is a directory.") + } + } + + // Proceed if file does not exist. return for all other errors. + if err != nil { + if !os.IsNotExist(err) { + return err + } + } + + // Extract top level directory. + objectDir, _ := filepath.Split(filePath) + if objectDir != "" { + // Create any missing top level directories. + if err := os.MkdirAll(objectDir, 0700); err != nil { + return err + } + } + + // Gather md5sum. + objectStat, err := c.StatObject(ctx, bucketName, objectName, StatObjectOptions(opts)) + if err != nil { + return err + } + + // Write to a temporary file "fileName.part.minio" before saving. + filePartPath := filePath + objectStat.ETag + ".part.minio" + + // If exists, open in append mode. If not create it as a part file. + filePart, err := os.OpenFile(filePartPath, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0600) + if err != nil { + return err + } + + // If we return early with an error, be sure to close and delete + // filePart. If we have an error along the way there is a chance + // that filePart is somehow damaged, and we should discard it. + closeAndRemove := true + defer func() { + if closeAndRemove { + _ = filePart.Close() + _ = os.Remove(filePartPath) + } + }() + + // Issue Stat to get the current offset. + st, err = filePart.Stat() + if err != nil { + return err + } + + // Initialize get object request headers to set the + // appropriate range offsets to read from. + if st.Size() > 0 { + opts.SetRange(st.Size(), 0) + } + + // Seek to current position for incoming reader. + objectReader, objectStat, _, err := c.getObject(ctx, bucketName, objectName, opts) + if err != nil { + return err + } + + // Write to the part file. + if _, err = io.CopyN(filePart, objectReader, objectStat.Size); err != nil { + return err + } + + // Close the file before rename, this is specifically needed for Windows users. + closeAndRemove = false + if err = filePart.Close(); err != nil { + return err + } + + // Safely completed. Now commit by renaming to actual filename. + if err = os.Rename(filePartPath, filePath); err != nil { + return err + } + + // Return. + return nil +} |