public static void put(String srcFileOnLocal, String destFileOnAqua)
{
// step 1. instantiate a client to connect to Aqua
String rootURL = "http://*****:*****@172.16.20.131:8080/aqua/rest/cdmi";
String homeContainer = "/hongquan/test999";
String jsonProps = "";
AquaClientRef client = new AquaClientRef(rootURL, homeContainer, jsonProps);
try {
// step 2. open the output file on local disk to save
FileStream fcIn = null;
Console.WriteLine("opening external input file: " + srcFileOnLocal);
fcIn = new FileStream(srcFileOnLocal, FileMode.Open);
// step 3. allocate a ByteBuffer dataBuf. be aware this buffer must be allocated via direct mode
int buffSize = 100 * 1024;
byte[] dataBuf = new byte[buffSize];
// step 4 create the new data object on Aqua
Console.WriteLine("creating " + destFileOnAqua + " on Aqua");
client.nonCdmi_CreateDataObject(destFileOnAqua, "", dataBuf, 0);
// step 5. copy the data buffer by buffer and save to the local file
int len = 0;
int offset = 0;
// the output string parameters from API nonCdmi_ReadDataObject()
StringBuilder location = new StringBuilder();
StringBuilder contentType = new StringBuilder();
// the loop
do
{
// step 5.1 clean up the data left in the dataBuf
Array.Clear(dataBuf, 0, dataBuf.Length);
// step 5.2 read the data from the local file
len = fcIn.Read(dataBuf, 0, dataBuf.Length);
// step 5.3 check the len of data read, see if we have reached EOF
if (len <= 0)
{
break;
}
// step 5.4 invokes nonCdmi_UpdateDataObject() to write the buffer into the data object on Aqua
Console.WriteLine("copying " + offset + "+" + len);
int ret = client.nonCdmi_UpdateDataObject(destFileOnAqua,
location, "", offset, -1, dataBuf, len, true, false);
// step 5.6 check the return code
if (ret < 200 || ret >= 300)
{
break;
}
// step 5.7 step the offset for next round
offset += len;
} while (len > 0);
// step 6. finish putting, close the local file
Console.WriteLine("file copied, size=" + offset);
fcIn.Close();
// step 7. flush the data in cache onto Aqua if there are any
client.flushDataObject(destFileOnAqua);
}
catch (FileNotFoundException ex)
{
Console.WriteLine(ex.Message + " in the specified directory.");
}
catch (IOException e)
{
Console.WriteLine(e.Message);
}
}
