Created
August 7, 2019 07:30
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BlobStorageUri (kotlin, jackson)
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import com.fasterxml.jackson.annotation.JsonCreator | |
import com.fasterxml.jackson.annotation.JsonValue | |
data class BlobStorageUri( | |
val account: String, | |
val container: String, | |
val key: String | |
) { | |
val uri: String | |
@JsonValue | |
get() = toUriString() | |
companion object { | |
const val scheme = "blobstorage://" | |
@JsonCreator | |
@JvmStatic | |
fun ofUriString(uriString: String): BlobStorageUri { | |
val (account, container, key) = parse(uriString) | |
return BlobStorageUri(account = account, container = container, key = key) | |
} | |
} | |
} | |
fun BlobStorageUri.toUriString(): String { | |
if (key.isNotEmpty()) { | |
return "${BlobStorageUri.scheme}$account/$container/$key" | |
} | |
if (container.isNotEmpty()) { | |
return "${BlobStorageUri.scheme}$account/$container" | |
} | |
if (account.isNotEmpty()) { | |
return "${BlobStorageUri.scheme}$account" | |
} | |
return BlobStorageUri.scheme | |
} | |
private fun parse(uriString: String): Triple<String, String, String> { | |
if (!uriString.startsWith(BlobStorageUri.scheme)) { | |
error("Malformed UriString! BlobStorageUri must start with ${BlobStorageUri.scheme} . given: $uriString") | |
} | |
val withoutPrefix = uriString.removePrefix(BlobStorageUri.scheme) | |
val parts = withoutPrefix.split("/") | |
val account = parts.getOrNull(0) | |
?: return Triple("", "", "") | |
val container = parts.getOrNull(1) | |
?: return Triple(account, "", "") | |
val rest = parts.filterIndexed { index, value -> | |
index > 1 | |
} | |
val key = rest.joinToString(separator = "/") | |
return Triple(account, container, key) | |
} |
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