Class HttpStorageRpcHasherHelper (2.70.0)

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public final class HttpStorageRpcHasherHelper

Internal utility class to perform client-side CRC32C checksum validation on downloaded data specifically for the HttpStorageRpc transport layer.

Inheritance

java.lang.Object > HttpStorageRpcHasherHelper

Inherited Members

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Static Fields

INSTANCE

public static final HttpStorageRpcHasherHelper INSTANCE

Field Value
Type	Description
HttpStorageRpcHasherHelper

Methods

shouldValidate(HttpResponse response)

public boolean shouldValidate(HttpResponse response)

Determines if client-side validation should be performed on the downloaded object.

Parameter
Name	Description
response	com.google.api.client.http.HttpResponse

Returns
Type	Description
boolean

validate(HttpResponse response, OutputStream activeStream)

public void validate(HttpResponse response, OutputStream activeStream)

Validates the downloaded output stream against GCS's expected base64-encoded value in response headers.

Parameters
Name	Description
response	com.google.api.client.http.HttpResponse
activeStream	OutputStream

Exceptions
Type	Description
IOException	if the checksums do not match.

validateCrc32c(String expectedCrc32cBase64, byte[] content)

public void validateCrc32c(String expectedCrc32cBase64, byte[] content)

Validates a downloaded raw byte array against GCS's expected base64-encoded value.

Parameters
Name	Description
expectedCrc32cBase64	String
content	byte[]

Exceptions
Type	Description
IOException	if the checksums do not match.

validateCrc32c(String expectedCrc32cBase64, int calculatedCrc32c)

public void validateCrc32c(String expectedCrc32cBase64, int calculatedCrc32c)

Validates a calculated CRC32C value against GCS's expected base64-encoded value.

Parameters
Name	Description
expectedCrc32cBase64	String
calculatedCrc32c	int

Exceptions
Type	Description
IOException	if the checksums do not match.

wrap(OutputStream out, boolean isChecksumValidationEnabled)

public OutputStream wrap(OutputStream out, boolean isChecksumValidationEnabled)

Returns a wrapping output stream that hashes the written content if validation is enabled, or the original output stream otherwise.

Parameters
Name	Description
out	OutputStream
isChecksumValidationEnabled	boolean

Returns
Type	Description
OutputStream