@Override
public void respondHead(Resource resource, Response response, Request request) {
// setRespondContentCommonHeaders(response, resource, Response.Status.SC_NO_CONTENT,
// request.getAuthorization());
setRespondContentCommonHeaders(
response, resource, Response.Status.SC_OK, request.getAuthorization());
if (!(resource instanceof GetableResource)) {
return;
}
GetableResource gr = (GetableResource) resource;
Long contentLength = gr.getContentLength();
if (contentLength != null) {
response.setContentLengthHeader(contentLength);
} else {
log.trace("No content length is available for HEAD request");
}
String acc = request.getAcceptHeader();
String ct = gr.getContentType(acc);
if (ct != null) {
ct = pickBestContentType(ct);
if (ct != null) {
response.setContentTypeHeader(ct);
}
}
}
@Override
public void respondContent(
Resource resource, Response response, Request request, Map<String, String> params)
throws NotAuthorizedException, BadRequestException, NotFoundException {
log.debug("respondContent: " + resource.getClass());
Auth auth = request.getAuthorization();
setRespondContentCommonHeaders(response, resource, auth);
if (resource instanceof GetableResource) {
GetableResource gr = (GetableResource) resource;
String acc = request.getAcceptHeader();
String ct = gr.getContentType(acc);
if (ct != null) {
ct = pickBestContentType(ct);
response.setContentTypeHeader(ct);
}
cacheControlHelper.setCacheControl(gr, response, request.getAuthorization());
Long contentLength = gr.getContentLength();
Boolean doBuffering = null;
if (resource instanceof BufferingControlResource) {
BufferingControlResource bcr = (BufferingControlResource) resource;
doBuffering = bcr.isBufferingRequired();
}
if (doBuffering == null) {
if (buffering == null || buffering == BUFFERING.whenNeeded) {
doBuffering =
(contentLength
== null); // if no content length then we buffer content to find content length
} else {
doBuffering =
(buffering
== BUFFERING
.always); // if not null or whenNeeded then buffering is explicitly enabled or
// disabled
}
}
if (!doBuffering) {
log.trace("sending content with known content length: " + contentLength);
if (contentLength != null) {
response.setContentLengthHeader(contentLength);
}
response.setEntity(new GetableResourceEntity(gr, params, ct));
} else {
BufferingGetableResourceEntity e =
new BufferingGetableResourceEntity(gr, params, ct, contentLength, getMaxMemorySize());
response.setEntity(e);
}
}
}
@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));
}
@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());
}