kfaraz commented on a change in pull request #12215:
URL: https://github.com/apache/druid/pull/12215#discussion_r796488775
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File path: core/src/main/java/org/apache/druid/data/input/impl/HttpEntity.java
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@@ -80,23 +80,30 @@ protected String getPath()
return t -> t instanceof IOException;
}
- public static InputStream openInputStream(URI object, String userName,
PasswordProvider passwordProvider, long offset)
- throws IOException
- {
- final URLConnection urlConnection = object.toURL().openConnection();
+ private static void addAuthHeader(URLConnection urlConnection, String
userName, PasswordProvider passwordProvider){
if (!Strings.isNullOrEmpty(userName) && passwordProvider != null) {
String userPass = userName + ":" + passwordProvider.getPassword();
String basicAuthString = "Basic " +
Base64.getEncoder().encodeToString(StringUtils.toUtf8(userPass));
urlConnection.setRequestProperty("Authorization", basicAuthString);
}
+ }
+
+ public static InputStream openInputStream(URI object, String userName,
PasswordProvider passwordProvider, long offset)
+ throws IOException
+ {
+ final URLConnection urlConnection = object.toURL().openConnection();
+ addAuthHeader(urlConnection, userName, passwordProvider);
final String acceptRanges =
urlConnection.getHeaderField(HttpHeaders.ACCEPT_RANGES);
final boolean withRanges = "bytes".equalsIgnoreCase(acceptRanges);
if (withRanges && offset > 0) {
// Set header for range request.
// Since we need to set only the start offset, the header is
"bytes=<range-start>-".
// See https://tools.ietf.org/html/rfc7233#section-2.1
- urlConnection.addRequestProperty(HttpHeaders.RANGE,
StringUtils.format("bytes=%d-", offset));
- return urlConnection.getInputStream();
+ urlConnection.getInputStream().close();
+ final URLConnection newUrlConnection = object.toURL().openConnection();
+ addAuthHeader(newUrlConnection, userName, passwordProvider);
+ newUrlConnection.addRequestProperty(HttpHeaders.RANGE,
StringUtils.format("bytes=%d-", offset));
Review comment:
This offset is being used to resume a file download from an external
server.
If an external server supports `Range` in the header, we are specifying the
offset in the header itself so that we can open a stream which reads only after
the offset rather than having to skip them in the input stream itself.
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