protected void setRespondCommonHeaders(
Response response, Resource resource, Response.Status status, Auth auth) {
response.setStatus(status);
response.setNonStandardHeader("Server", "milton.io-" + miltonVerson);
response.setDateHeader(new Date());
response.setNonStandardHeader("Accept-Ranges", "bytes");
String etag = eTagGenerator.generateEtag(resource);
if (etag != null) {
response.setEtag(etag);
}
}
@Override
public void respondNotModified(GetableResource resource, Response response, Request request) {
log.trace("respondNotModified");
response.setStatus(Response.Status.SC_NOT_MODIFIED);
response.setDateHeader(new Date());
String etag = eTagGenerator.generateEtag(resource);
if (etag != null) {
response.setEtag(etag);
}
// Note that we use a simpler modified date handling here then when
// responding with content, because in a not-modified situation the
// modified date MUST be that of the actual resource
Date modDate = resource.getModifiedDate();
response.setLastModifiedHeader(modDate);
cacheControlHelper.setCacheControl(resource, response, request.getAuthorization());
}
@Override
public void respondPartialContent(
GetableResource resource,
Response response,
Request request,
Map<String, String> params,
Range range)
throws NotAuthorizedException, BadRequestException, NotFoundException {
log.debug("respondPartialContent: " + range.getStart() + " - " + range.getFinish());
response.setStatus(Response.Status.SC_PARTIAL_CONTENT);
long st = range.getStart() == null ? 0 : range.getStart();
long fn;
Long cl = resource.getContentLength();
if (range.getFinish() == null) {
if (cl != null) {
fn = cl.longValue() - 1; // position is one less then length
} else {
log.warn(
"Couldnt calculate range end position because the resource is not reporting a content length, and no end position was requested by the client: "
+ resource.getName()
+ " - "
+ resource.getClass());
fn = -1;
}
} else {
fn = range.getFinish();
}
response.setContentRangeHeader(st, fn, cl);
long contentLength = fn - st + 1;
response.setContentLengthHeader(contentLength);
response.setDateHeader(new Date());
String etag = eTagGenerator.generateEtag(resource);
if (etag != null) {
response.setEtag(etag);
}
String acc = request.getAcceptHeader();
String ct = resource.getContentType(acc);
if (ct != null) {
response.setContentTypeHeader(ct);
}
response.setEntity(new GetableResourceEntity(resource, range, params, ct));
}