Download file bucket

Author: e | 2025-04-24

Create a bucket; Retrieve a bucket; List all buckets; Update a bucket; Delete a bucket; Empty a bucket; Upload a file; Download a file; List all files in a bucket; Replace an existing file; Move

Download file from a bucket

OutputStream.write(buffer, 0, len); } return outputStream; } catch (IOException ioException) { logger.error("IOException: " + ioException.getMessage()); } catch (AmazonServiceException serviceException) { logger.info("AmazonServiceException Message: " + serviceException.getMessage()); throw serviceException; } catch (AmazonClientException clientException) { logger.info("AmazonClientException Message: " + clientException.getMessage()); throw clientException; } return null; }} RestAPI - Download file From AWS S3 Create the RestController class to download the file from AWS S3 bucket. package com.techgeeknext.springbootawss3.controller;import com.techgeeknext.springbootawss3.service.S3BucketStorageService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.http.HttpHeaders;import org.springframework.http.MediaType;import org.springframework.http.ResponseEntity;import org.springframework.web.bind.annotation.*;import java.io.ByteArrayOutputStream;@RestControllerpublic class S3BucketStorageController { @Autowired S3BucketStorageService service; @GetMapping(value = "/download/{filename}") public ResponseEntitybyte[]> downloadFile(@PathVariable String filename) { ByteArrayOutputStream downloadInputStream = service.downloadFile(filename); return ResponseEntity.ok() .contentType(contentType(filename)) .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename="" + filename + """) .body(downloadInputStream.toByteArray()); } private MediaType contentType(String filename) { String[] fileArrSplit = filename.split("\\."); String fileExtension = fileArrSplit[fileArrSplit.length - 1]; switch (fileExtension) { case "txt": return MediaType.TEXT_PLAIN; case "png": return MediaType.IMAGE_PNG; case "jpg": return MediaType.IMAGE_JPEG; default: return MediaType.APPLICATION_OCTET_STREAM; } }} Test AWS S3 operations Now, run the Spring Boot application. Upload File on AWS S3 Bucket Use POST method with url select file and provide filename. Verify on AWS S3 Bucket. List all Files from AWS S3 Bucket Use GET method with url Download Files from AWS S3 Bucket Use GET method with url Download Source Code The full source code for this article can be found on below. Download it here - Spring Cloud: AWS S3 Example In this tutorial, we will develop AWS Simple Storage Service (S3) together with Spring Boot Rest API service to download the file from AWS S3 Bucket. Amazon S3 Tutorial : Create Bucket on Amazon S3 Generate Credentials to access AWS S3 Bucket Spring Boot + AWS S3 Upload File Spring Boot + AWS S3 List Bucket Files Spring Boot + AWS S3 Download Bucket File Spring Boot + AWS S3 Delete Bucket File AWS S3 Interview Questions and Answers What is S3? Amazon Simple Storage Service (Amazon S3) is an object storage service that provides industry-leading scalability, data availability, security, and performance. The service can be used as online backup and archiving of data and applications on Amazon Web Services (AWS). AWS Core S3 Concepts In 2006, S3 was one of the first services provided by AWS. Many features have been introduced since then, but the core principles of S3 remain Buckets and Objects. AWS BucketsBuckets are containers for objects that we choose to store. It is necessary to remember that S3 allows the bucket name to be globally unique. AWS ObjectsObjects are the actual items that we store in S3. They are marked by a key, which is a sequence of Unicode characters with a maximum length of 1,024 bytes in UTF-8 encoding. Prerequisites First Create Bucket on Amazon S3 and then Generate Credentials(accessKey and secretKey) to access AWS S3 bucket Take a look at our suggested posts: Let's start developing AWS S3 + Spring Boot application. Create Spring

File Bucket File - puppet.com

Destination bucket, you can also download aninventory report through the inventory report configuration from which itwas generated:In the Google Cloud console, go to the Cloud Storage Buckets page.Go to BucketsIn the list of buckets, click the name of the source bucket containingthe inventory report configuration that generated the report you want todownload.On the Bucket details page, click the configuration name of theinventory report configuration.On the Report configuration details page that appears, navigate tothe Inventory report history section, then click the destinationobject path of the inventory report you want to download.The Bucket details page appears for the destination bucket thatcontains the inventory report.Click Downloadassociated with the inventory report you want to download.Download report shardsTo download an inventory report that's been split into one or moreshards, complete the following steps:In the Google Cloud console, go to the Cloud Storage Buckets page.Go to BucketsIn the list of buckets, click the name of the destination bucket youspecified when you created the inventory report configuration.On the Bucket details page, check for the presence of amanifest file. The presence of a manifest file indicates thatall the shards of an inventory report have been generated.An example manifest file name isfc95c52f-157a-494f-af4a-d4a53a69ba66_2022-11-30T00:00_manifest.json.In the destination bucket, click Downloadassociated with the manifest file. Note the names of the shard files youwant to download from the report_shards_file_names field.In the destination bucket, click Downloadassociated with the shard files you want to download.Command lineDownload individual reportsTo download an inventory report, complete the following steps:To list all the inventory reports that have been generated by aninventory report configuration and retrieve their REPORT_DETAIL_ID,use the gcloud storage insights inventory-reports details listcommand:gcloud storage insights inventory-reports details list CONFIG_NAME \ --filter=EXPRESSION \ --page-size=SIZE \ --sort-by=FIELDReplace:CONFIG_NAME with the unique name of theinventory report configuration, in the formatprojects/PROJECT/locations/LOCATION/reportConfigs/REPORT_CONFIG_UUID.EXPRESSION with a boolean filter to apply to eachresource item to be listed. If the expression evaluates True, then thatitem is listed. For more details and examples of filter expressions,run $ gcloud topic filters.SIZE with the maximum number of resources perpage. The default is 50.FIELD with a comma-separated list of resourcefield key names to sort by. The default order is ascending. Prefix afield with. Create a bucket; Retrieve a bucket; List all buckets; Update a bucket; Delete a bucket; Empty a bucket; Upload a file; Download a file; List all files in a bucket; Replace an existing file; Move Create a bucket; Retrieve a bucket; List all buckets; Update a bucket; Delete a bucket; Empty a bucket; Upload a file; Download a file; List all files in a bucket; Replace an existing file; Move

Upload file to a bucket

On demand using the AFM pre-fetch command:# mmafmcosctl fs2 fileset2 /gpfs/fs1/fileset2 download --object-list /tmp/objlist --dataThis command assumes that the name of the objects are recorded line-by-line in file /tmp/objlist and these objects are downloaded to fileset2 in cluster 2. The object names are relative to the bucket name and require some additional tooling to check for the object name in the cloud object storage bucket (sharedBucket). The file names, extended attributes and ACL given to files in fileset1 are synchronized with the corresponding files in fileset2 and fileset3 via the cloud object storage bucket.It is also possible to download just the metadata from the cloud object storage bucket to fileset2. With this the user can see the file in fileset2 without yet having access to the data. Especially for large files it gives the user an overview about the available files at minimal download volumes. The file data must be downloaded separately. To pre-fetch just the file metadata the following command can be used. The object names subject for metadata download can either be specified in a list or with option –all. This option downloads metadata for all objects in the bucket:# mmafmcosctl fs2 fileset2 /gpfs/fs1/fileset2 download --object-list /tmp/objlist | all --metadataFiles in fileset2 and fileset3 are configured in RO-mode, this means no new data can be added or modified in these filesets. It is possible to configure these filesets in IW-mode (similar to the Global collaboration use case) allowing files to be created and modified in fileset2 and fileset3. In IW-mode files created and modified in fileset2 and fileset3 are automatically uploaded to the cloud object storage bucket.Summary of this use case:With this use case it is possible to selectively share files from provider fileset1 with other consumer filesets (fileset2 and fileset3) in different clusters located in different locations. It allows better control of the download cost from the cloud object storage bucket because the download of file data and metadata can be controlled for the consumer fileset2 and fileset3. The identification and download of files required in fileset2 and fileset3 must be performed by an administrator using the AFM pre-fetch command.Global collaborationThe global collaboration use case is similar to the global sharing use case with the exception that files in the AFM to cloud object storage fileset2 (cluster 2) and fileset3 (cluster 3) can be read, written and deleted. All AFM to cloud object storage filesets are enabled for reading and writing. This means that files created in fileset2 of cluster 2 are asynchronously uploaded to the cloud object storage bucket (sharedBucket) and made available to fileset1 and fileset3. Likewise, files modified in fileset3 are asynchronously uploaded to the cloud object storage bucket and made available to fileset1 and fileset2. Accordingly, all fileset are configured in IW mode. Figure 3 gives an overview about the solution: Figure 3: Architecture for hybrid cloud global collaboration solutionThe configuration of the AFM to cloud object storage filesets in all three clusters is like the global sharing solution, with the exception that := range objs { if _, err = s3Client.PutObject(ctx, &s3.PutObjectInput{ Bucket: aws.String(bucketName), Key: aws.String(objName), Body: body, }); err != nil { log.Fatalf("unable to upload file (%v): %v", objName, err) } log.Printf("Uploaded file (%v) to bucket: %v", objName, bucketName) } // 4. List objects in the bucket listObj, err := s3Client.ListObjectsV2(ctx, &s3.ListObjectsV2Input{ Bucket: aws.String(bucketName), }) if err != nil { log.Fatalf("unable to list objects: %v", err) } for _, item := range listObj.Contents { log.Printf("Listed object: %v", *item.Key) } // 5. Download the object first out, err := s3Client.GetObject(ctx, &s3.GetObjectInput{ Bucket: aws.String(bucketName), Key: aws.String("1.txt"), }) if err != nil { log.Fatalf("unable to download object: %v", err) } defer out.Body.Close() dl, err := io.ReadAll(out.Body) if err != nil { log.Fatalf("unable to read object data: %v", err) } log.Printf("downloaded file size: %d", len(dl)) // 6. Create a presigned URL for the first file url := fmt.Sprintf(" bucketName, "1.txt") req, err := http.NewRequest(http.MethodPost, url, bytes.NewReader([]byte(`{"TTL": 30}`))) if err != nil { log.Fatalf("unable to create presigned request: %v", err) } req.Header.Set("Authorization", "Bearer "+telnyxAPIKey) resp, err := http.DefaultClient.Do(req) if err != nil { log.Fatalf("unable to send presigned request: %v", err) } defer resp.Body.Close() if resp.StatusCode != http.StatusOK { b, _ := io.ReadAll(resp.Body) log.Fatalf("unexpected status code: %v | response: %s", resp.StatusCode, b) } type presignedURL struct { Data struct { Token string `json:"token"` ExpiresAt time.Time `json:"expires_at"` PresignedURL string `json:"presigned_url"` } `json:"data"` } var purl presignedURL if err := json.NewDecoder(resp.Body).Decode(&purl); err != nil { log.Fatalf("unable to decode presigned URL: %v", err) } log.Printf("Generated presigned URL: %v", purl.Data.PresignedURL) //

How to download a file from aws bucket only by knowing bucket

Locations. Because AFM is made for unreliable network connections, consumer filesets can reside in clusters located in different geographies than the provider fileset. All files created and modified in the provider fileset1 are automatically uploaded to the cloud object storage bucket, which requires a solid network connection. The file metadata of all files residing as objects in the cloud object storage is automatically downloaded to the consumer fileset2 and fileset3 on demand or using the AFM prefetch command. This allow you to control the download costs that may be associated with cloud object storage. The next use case Selective sharing explains methods for more control of download volumes and cost.Selective sharingThis use case aims to limit the volume of data being downloaded from the cloud object storage providing better control of costs associated with downloading file data and metadata. One AFM to cloud object storage fileset (fileset1) is configured as provider and all files created, modified or changed in this fileset are uploaded to cloud object storage. Two other AFM to cloud object storage filesets (fileset2 and fileset3) are configured as consumer in object-only mode and download files provided by fileset1 from cloud object storage when required. The download of file data and metadata is done by the IBM Spectrum Scale storage administrator using the AFM pre-fetch command. This use case is similar to the Global sharing with the difference that file data and metadata is not automatically presented in the consumer fileset2 and fileset3. Figure 2 shows an overview of this solution. Figure 2: Architecture for hybrid cloud selective file sharing solutionThe cloud object storage bucket (sharedBucket) is created and users are configured. The information about user credentials and endpoints is available.Fileset1 in cluster 1 is configured in IW-mode in object-FS mode. In this mode the file metadata is asynchronously presented in fileset1 and file data is downloaded on access or with the AFM pre-fetch command. Furthermore, newly created and modified files are asynchronously uploaded to the cloud object storage bucked sharedBucket. To configure fileset1 the following command can be used:# mmafmcosconfig fs1 fileset1 --endpoint --xattr --acls --bucket sharedBucket --mode iw--object-fsFileset2 in cluster 2 and fileset3 in cluster3 are configured in RO-mode and in operation mode objectOnly. With this configuration, files provided by fileset1 into the cloud object storage bucket are not automatically presented in fileset2 and fileset3. The following commands show how to create fileset2 and fileset3:# mmafmcosconfig fs2 fileset2 --endpoint --xattr --acls --bucket sharedBucket --mode ro# mmafmcosconfig fs3 fileset3 --endpoint --xattr --acls --bucket sharedBucket --mode roNote, omitting the option --object-fs automatically turns the AFM to cloud object storage filesets into objectOnly mode.After the AFM to cloud object storage filesets in all clusters are configured, files created and modified in fileset1 are asynchronously uploaded to the cloud object storage bucket (sharedBucket). Because the operation mode of fileset2 and fileset3 is set to objectOnly the metadata of uploaded files is not yet presented in these filesets. The download of data and metadata to fileset2 and fileset3 can be done

How to download files from a bucket

E2 account is designated as objects and are assigned metadata and a unique identifier. The size of an object may vary from a few bytes to several gigabytes.To add files within a bucket,Sign in to your IDrive® e2 account and navigate to the Buckets page.Click on the bucket where you want to store the file.Click to upload files and to upload folders. You can also use to create a new folder and upload files/folders within it.Select and upload the files from your computer. The upload progress will be displayed in the bottom-right corner.Note: You can click to abort a file upload.Click corresponding to any object for information such as object size, date of last modification, access level, version ID, and, in the case of public access, also the object URL.Retrieve data stored in IDrive® e2 accountRetrieve data stored in your IDrive® e2 account from anywhere.To download your files/objects via the IDrive® e2 web console,Sign in to your IDrive® e2 account.Navigate to the Bucket page.Click on the bucket from which you want to retrieve the files.Select the objects you want to download and click .Alternatively, hover over the required object and click .The IDrive® e2 web console does not provide the folder download option. Use an S3-compatible client to download a folder directory structure, or a large number of files/data. Know more > Related articles Configure IDrive® e2 bucket policies Configure object lifecycle rules for an IDrive® e2 bucket Create IDrive® e2 buckets Copy existing bucket settings to a new bucket Enable IDrive® e2 regions and configure settings -->. Create a bucket; Retrieve a bucket; List all buckets; Update a bucket; Delete a bucket; Empty a bucket; Upload a file; Download a file; List all files in a bucket; Replace an existing file; Move

Downloading a File from an S3 Bucket

Value.In the Choose a storage class for your data section, use the default values.In the Choose how to control access to objects section, do the following:Clear Enforce public access prevention on this bucket; this lets youshare the object later.For Access control, use the default value.In the Choose how to protect object data section, use the default value.Click Create.That's it — you've just created a Cloud Storage bucket!Upload an object into the bucketTo upload a sample object into your new bucket:Right-click the following image and download it to your computer.In the Cloud Storage buckets page, click the name of the bucket thatyou created.In the Objects tab, click Upload files.In the file dialog, go to the file that you downloaded and select it.After the upload completes, you should see the filename and information aboutthe file, such as its size and type.Download the objectTo download the image from your bucket, clickDownload .To allow public access to the bucket and create a publicly accessible URL forthe image:Click the Permissions tab above the list of files.Click the Grant Access button to add a new Principal.The Add principals pane appears.In the New principals box, enter allUsers.In the Select a role drop-down, select Cloud Storage > Storage ObjectViewer.Click Save.In the Are you sure you want to make this resource public? window, clickAllow public access.To verify, click the Objects tab to return to the list of objects. Yourobject's Public access column should read Public to internet.The Copy URL button provides a shareable URL similar to the following: remove public access from the bucket and stop sharing the image publicly:Click the Permissions tab above the list of objects.Click the checkbox associated with the entry that has allUsers listed inthe Principal column.Click the Remove Access button.In the dialog that appears, click Confirm.In the Objects tab, you should see that the image no longer has aCopy URL button associated with it.Create foldersIn the Objects tab, click Create folder.Enter folder1 for Name and click Create.You should see the folder in the bucket with an image of a folder icon todistinguish it from objects.Create a subfolder and upload a file to it:Click folder1.Click