Write Metadata to S3 Object via Put operation

user_6825845 0
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I'm trying to create an empty object with just a metadata in the S3 bucket via Kotlin but it's not working. The object is created but the meta data isn't there. This is the code I'm using:

    val metaList = mapOf("x-amz-website-redirect-location" to "https://someurl")
    val metaData = ObjectMetadata()
    metaData.userMetadata = metaList
    s3client.putObject(
        "somebucket",
        "somekey",
        InputStream.nullInputStream(),
        ObjectMetadata()
    )
aws-java-sdk kotlin metadata amazon-s3
1 Answers

You create an instance of ObjectMetadata

val metaData = ObjectMetadata()
metaData.userMetadata = metaList

But, then you don't use it. Instead, you create another instance during the call:

s3client.putObject(
    "somebucket",
    "somekey",
    InputStream.nullInputStream(),
    ObjectMetadata()
)

You should pass in your metaData into s3client.putObject

s3client.putObject(
    "somebucket",
    "somekey",
    InputStream.nullInputStream(),
    metaData
)
user_6277270
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