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Obtaining Object Metadata

API Description

You can use this API to send a HEAD request to the object of a specified bucket to obtain its metadata.

Method Definition

func (obsClient ObsClient) GetObjectMetadata(input *GetObjectMetadataInput) (output *GetObjectMetadataOutput, err error)

Method Definition If a Signed URL Is Used

func (obsClient ObsClient) GetObjectMetadataWithSignedUrl(signedUrl string, actualSignedRequestHeaders http.Header) (output *GetObjectMetadataOutput, err error)

Request Parameter

Field

Type

Optional or Mandatory

input

*GetObjectMetadataInput

Mandatory

Returned Results

Field

Type

output

*GetObjectMetadataOutput

err

error

Sample Code

func main() {
       input := &obs.GetObjectMetadataInput{}
       input.Bucket = "bucketname"
       input.Key = "objectkey"
       output, err := obsClient.GetObjectMetadata(input)
       if err == nil {
              fmt.Printf("RequestId:%s\n", output.RequestId)
              fmt.Printf("StorageClass:%s, ETag:%s, ContentType:%s, ContentLength:%d, LastModified:%s\n",
                     output.StorageClass, output.ETag, output.ContentType, output.ContentLength, output.LastModified)
       } else {
              if obsError, ok := err.(obs.ObsError); ok {
                     fmt.Println(obsError.StatusCode)
              } else {
                     fmt.Println(err)
              }
       }
}
Parent topic: Objects-Related APIs