b2_copy_part

Code

ACCOUNT_AUTHORIZATION_TOKEN=''; # Provided by b2_authorize_account
API_URL=''; # Provided by b2_authorize_account
SOURCE_FILE_ID=''; # The file you wish to copy
LARGE_FILE_ID=''; # Provided by b2_start_large_file
curl \
    -H "Authorization: $ACCOUNT_AUTHORIZATION_TOKEN" \
    -d "`printf '{"sourceFileId":"%s","largeFileId":"%s","partNumber":1,"range":"bytes=0-4999999"}' $SOURCE_FILE_ID $LARGE_FILE_ID`" \
    "$API_URL/b2api/v2/b2_copy_part";

Output

{
  "contentLength": 5000000,
  "contentSha1": "e8daf2cae7b77beb23a246aec2c6d3ede06089c9",
  "fileId": "LARGE_FILE_ID",
  "partNumber": 1,
  "uploadTimestamp": 1559581682460
}

Code

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;

public class B2CopyPart {

    public static void main(String[] args) throws IOException {
        final String apiUrl = ""; // Provided by b2_authorize_account
        final String accountAuthorizationToken = ""; // Provided by b2_authorize_account
        final String sourceFileId = ""; // The file you wish to copy
        final String largeFileId = ""; // Provided by b2_start_large_file
        final String partNumber = "1";

        final URL url = new URL(apiUrl + "/b2api/v2/b2_copy_part");
        final HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        try {
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Authorization", accountAuthorizationToken);

            connection.setDoOutput(true);
            DataOutputStream writer = new DataOutputStream(connection.getOutputStream());
            writer.write((
                    "{"
                            + "\"sourceFileId\": \"" + sourceFileId + "\","
                            + "\"largeFileId\": \"" + largeFileId + "\","
                            + "\"partNumber\": " + partNumber
                            + "}").getBytes(StandardCharsets.UTF_8)
            );
            final InputStream in = new BufferedInputStream(connection.getInputStream());
            final String jsonResponse = inputStreamToString(in);

            System.out.println(jsonResponse);
        } finally {
            connection.disconnect();
        }
    }

    private static String inputStreamToString(InputStream in) throws IOException {
        InputStreamReader reader = new InputStreamReader(in);
        StringBuilder sb = new StringBuilder();
        int c = reader.read();
        while (c != -1) {
            sb.append((char) c);
            c = reader.read();
        }
        reader.close();
        return sb.toString();
    }

}

Output

{
  "contentLength": 99212871,
  "contentSha1": "c604542967a93466d4ed087956753161cfab3f31",
  "fileId": "LARGE_FILE_ID",
  "partNumber": 1,
  "uploadTimestamp": 1559584243788
}

Code

import json
import urllib2

api_url = '' # Provided by b2_authorize_account
account_authorization_token = '' # Provided by b2_authorize_account
source_file_id = '' # The file you wish to copy
large_file_id = '' # Provided by b2_start_large_file
part_number = 1
request = urllib2.Request(
    '%s/b2api/v2/b2_copy_part' % api_url,
    json.dumps({
      'sourceFileId' : source_file_id,
      'largeFileId': large_file_id,
      'partNumber': part_number,
    }),
    headers = {
        'Authorization': account_authorization_token
    })
response = urllib2.urlopen(request)
response_data = json.loads(response.read())
print(json.dumps(response_data, indent=2))
response.close()

Output

{
  "uploadTimestamp": 1559585618236,
  "contentLength": 99212871,
  "fileId": "LARGE_FILE_ID",
  "partNumber": 1,
  "contentSha1": "c604542967a93466d4ed087956753161cfab3f31"
}

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