Object Storage Service:Bucket inventory

Usage notes

• In this topic, the public endpoint of the China (Hangzhou) region is used. If you want to access OSS by using other Alibaba Cloud services in the same region as OSS, use an internal endpoint For more information about the regions and endpoints supported by OSS, see Regions and endpoints.
• In this topic, an OSSClient instance is created by using an OSS endpoint. If you want to create an OSSClient instance by using custom domain names or STS, see Initialization.
• Make sure that you have the permissions to create, view, list, and delete inventories for a bucket. By default, the bucket owner has the permissions to perform the preceding operations. If you do not have the permissions to perform the preceding operations, apply for the permissions from the bucket owner.
• You can configure up to 1,000 inventories for a bucket.
• You must deploy the source bucket for which you want to configure an inventory in the same region as the destination bucket in which the inventory list is stored.

Create an inventory for a bucket

The following code provides an example on how to create an inventory for a bucket:

using Aliyun.OSS;
using Aliyun.OSS.Common;

// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. 
var endpoint = "yourEndpoint";
// The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
var accessKeyId = "yourAccessKeyId";
var accessKeySecret = "yourAccessKeySecret";
// Specify the name of the bucket. 
var bucketName = "examplebucket";
// Specify the ID of the account to which the bucket owner grants permissions to perform the operation. 
var accountId ="yourDestinationBucketAccountId";
// Specify the name of the RAM role that is granted the permissions to read all objects in the bucket for which you want to create the inventory and the permissions to write data to the bucket in which you want to store the generated inventory lists. 
var roleArn ="yourDestinationBucketRoleArn";
// Specify the name of the bucket in which you want to store the generated inventory lists. 
var destBucketName ="yourDestinationBucketName";
// Create an OSSClient instance. 
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
    // Create an inventory for the bucket. 
    var config = new InventoryConfiguration();
    // Specify the name of the inventory. 
    config.Id = "report1";
    // Specify whether to enable the inventory for the bucket. Valid values: true and false. If this parameter is set to true, the inventory is enabled. 
    config.IsEnabled = true;
    // Specify the rule that is used to filter the objects included in inventory lists. The following code provides an example on how to filter the objects by prefix. 
    config.Filter = new InventoryFilter("filterPrefix");
    // Configure the bucket in which you want to store the generated inventory lists. 
    config.Destination = new InventoryDestination();
    config.Destination.OSSBucketDestination = new InventoryOSSBucketDestination();
    // Specify the format of the inventory lists. 
    config.Destination.OSSBucketDestination.Format = InventoryFormat.CSV;
    // Specify the ID of the account to which the destination bucket belongs. 
    config.Destination.OSSBucketDestination.AccountId = accountId;
    // Specify the Alibaba Cloud Resource Name (ARN) of the RAM role that is used to access the destination bucket. 
    config.Destination.OSSBucketDestination.RoleArn = roleArn;
    // Specify the name of the bucket in which you want to store the generated inventory lists. 
    config.Destination.OSSBucketDestination.Bucket = destBucketName;
    // Specify the prefix of the path in which you want to store the generated inventory lists. 
    config.Destination.OSSBucketDestination.Prefix = "prefix1";
    
    // Specify whether to generate the inventory lists on a daily or weekly basis. The following code provides an example on how to generate the inventory lists on a weekly basis. A value of Weekly indicates that the inventory lists are generated on a weekly basis. A value of Daily indicates that the inventory lists are generated on a daily basis. 
    config.Schedule = new InventorySchedule(InventoryFrequency.Daily);
    // Specify that the inventory lists include only the current versions of objects. If you set the InventoryIncludedObjectVersions parameter to All, all versions of objects are included in the inventory lists. This configuration takes effect only when versioning is enabled for the bucket. 
    config.IncludedObjectVersions = InventoryIncludedObjectVersions.All;
    
    // Specify the object attributes that are included in the inventory lists. 
    config.OptionalFields.Add(InventoryOptionalField.Size);
    config.OptionalFields.Add(InventoryOptionalField.LastModifiedDate);
    config.OptionalFields.Add(InventoryOptionalField.StorageClass);
    config.OptionalFields.Add(InventoryOptionalField.IsMultipartUploaded);
    config.OptionalFields.Add(InventoryOptionalField.EncryptionStatus);
    config.OptionalFields.Add(InventoryOptionalField.ETag);
    var req = new SetBucketInventoryConfigurationRequest(bucketName, config);
    client.SetBucketInventoryConfiguration(req);
    Console.WriteLine("Set bucket:{0} InventoryConfiguration succeeded", bucketName);
}
catch (OssException ex)
{
    Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
        ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}

Query the inventories of a bucket

The following code provides an example on how to query an inventory configured for a bucket:

using Aliyun.OSS;
using Aliyun.OSS.Common;
// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. 
var endpoint = "yourEndpoint";
// The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
var accessKeyId = "yourAccessKeyId";
var accessKeySecret = "yourAccessKeySecret";
// Specify the name of the bucket. 
var bucketName = "examplebucket";
// Specify the name of the inventory. 
var id = "BucketInventoryConfigurationId";

// Create an OSSClient instance. 
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
    // Query the inventory that has a specified ID. 
    var request = new GetBucketInventoryConfigurationRequest(bucketName, id);
    // Query the inventory. 
    var result = client.GetBucketInventoryConfiguration(request);
    Console.WriteLine("Get bucket:{0} BucketInventoryConfiguration succeeded ", bucketName);
    // Display information about the inventory. 
    Console.WriteLine("bucket InventoryConfiguration id: {0}; bucket InventoryConfiguration IsEnabled: {1}", result.Configuration.Id, result.Configuration.IsEnabled);
}
catch (OssException ex)
{
    Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
        ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}

List multiple inventories at a time

The following code provides an example on how to list inventories configured for a bucket:

using Aliyun.OSS;
using Aliyun.OSS.Common;
// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. 
var endpoint = "yourEndpoint";
// The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
var accessKeyId = "yourAccessKeyId";
var accessKeySecret = "yourAccessKeySecret";
// Specify the name of the bucket. 
var bucketName = "examplebucket";
// Specify the names of the inventories. 
var id = "BucketInventoryConfigurationId";

// Create an OSSClient instance. 
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
    // List the inventories. By default, up to 100 inventories are listed. If more than 100 inventories are configured, the inventories are listed on pages. You can use the continuationToken parameter to list the inventories on the subsequent page. 
    string continuationToken = null;
    bool isTruncated = false;
    do {
        var request = new ListBucketInventoryConfigurationRequest(bucketName, continuationToken)
        var result = client.ListBucketInventoryConfiguration(request);
        Console.WriteLine("List bucket:{0} BucketInventoryConfiguration succeeded ", bucketName);
        // Display information about the inventories. 
        for (var i = 0; i < result.Configurations.Count; i++) {
            Console.WriteLine("bucket InventoryConfiguration id: {0}; bucket InventoryConfiguration IsEnabled: {1}", result.Configurations[i].Id, result.Configurations[i].IsEnabled);            
        }
        continuationToken = result.NextContinuationToken;
        isTruncated = result.IsTruncated;
    } while (isTruncated)
}
catch (OssException ex)
{
    Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
        ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}

Delete an inventory of a bucket

The following code provides an example on how to delete an inventory configured for a bucket:

using Aliyun.OSS;
using Aliyun.OSS.Common;

// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. 
var endpoint = "yourEndpoint";
// The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
var accessKeyId = "yourAccessKeyId";
var accessKeySecret = "yourAccessKeySecret";
// Specify the name of the bucket. 
var bucketName = "examplebucket";
// Specify the names of the inventories. 
var id = "BucketInventoryConfigurationId";

// Create an OSSClient instance. 
var client = new OssClient(endpoint, accessKeyId, accessKeySecret);
try
{
    // Delete the inventory that has the specified ID. 
    var request = new DeleteBucketInventoryConfigurationRequest(bucketName, id);
    var result = client.DeleteBucketInventoryConfiguration(request);
    Console.WriteLine("delete bucket:{0} BucketInventoryConfiguration succeeded ", bucketName);
}
catch (OssException ex)
{
    Console.WriteLine("Failed with error code: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
        ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
}

References

• For more information about the API operation that you can call to create an inventory, see PutBucketInventory.
• For more information about the API operation that you can call to query inventories configured for a bucket, see GetBucketInventory.
• For more information about the API operation that you can call to list multiple inventories configured for a bucket, see ListBucketInventory.
• For more information about the API operation that you can call to delete inventories configured for a bucket, see DeleteBucketInventory.