Class S3ChecksumValidatingInputStream
- java.lang.Object
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- java.io.InputStream
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- software.amazon.awssdk.services.s3.internal.checksums.S3ChecksumValidatingInputStream
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- All Implemented Interfaces:
Closeable
,AutoCloseable
,Abortable
public class S3ChecksumValidatingInputStream extends InputStream implements Abortable
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Constructor Summary
Constructors Constructor Description S3ChecksumValidatingInputStream(InputStream in, SdkChecksum cksum, long streamLength)
Creates an input stream using the specified Checksum, input stream, and length.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
abort()
void
close()
int
read()
Reads one byte at a time from the input stream, updates the checksum.int
read(byte[] buf, int off, int len)
Reads up to len bytes at a time from the input stream, updates the checksum.void
reset()
Resets stream state, including the running checksum.-
Methods inherited from class java.io.InputStream
available, mark, markSupported, read, skip
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Constructor Detail
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S3ChecksumValidatingInputStream
public S3ChecksumValidatingInputStream(InputStream in, SdkChecksum cksum, long streamLength)
Creates an input stream using the specified Checksum, input stream, and length.- Parameters:
in
- the input streamcksum
- the Checksum implementationstreamLength
- the total length of the expected stream (including the extra 4 bytes on the end).
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Method Detail
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read
public int read() throws IOException
Reads one byte at a time from the input stream, updates the checksum. If the end of the stream has been reached the checksum will be compared to the stream's checksum amd a SdkClientException will be thrown.- Specified by:
read
in classInputStream
- Returns:
- byte read, if a read happened, otherwise -1 will be returned to indicate eos.
- Throws:
IOException
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read
public int read(byte[] buf, int off, int len) throws IOException
Reads up to len bytes at a time from the input stream, updates the checksum. If the end of the stream has been reached the checksum will be compared to the stream's checksum amd a SdkClientException will be thrown.- Overrides:
read
in classInputStream
- Parameters:
buf
- buffer to write intooff
- offset in the buffer to write tolen
- maximum number of bytes to attempt to read.- Returns:
- number of bytes written into buf, otherwise -1 will be returned to indicate eos.
- Throws:
IOException
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reset
public void reset() throws IOException
Resets stream state, including the running checksum.- Overrides:
reset
in classInputStream
- Throws:
IOException
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close
public void close() throws IOException
- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Overrides:
close
in classInputStream
- Throws:
IOException
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