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Added ETag support.

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This commit is contained in:
marcins78@gmail.com
2013-01-11 23:49:26 +00:00
parent 624fa236c3
commit 5d56956531
1 changed files with 22 additions and 1 deletions
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23
gemp-lotr/gemp-lotr-async/src/main/java/com/gempukku/lotro/async/LotroHttpRequestHandler.java
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@@ -32,10 +32,12 @@ public class LotroHttpRequestHandler extends SimpleChannelUpstreamHandler {
private Map<Type, Object> _objects;
private UriRequestHandler _uriRequestHandler;
private String _uniqueEtag;
public LotroHttpRequestHandler(Map<Type, Object> objects, UriRequestHandler uriRequestHandler) {
_objects = objects;
_uriRequestHandler = uriRequestHandler;
_uniqueEtag = "\"" + String.valueOf(System.currentTimeMillis()) + "\"";
}
@Override
@@ -126,12 +128,30 @@ public class LotroHttpRequestHandler extends SimpleChannelUpstreamHandler {
}
}
writeHttpByteResponse(request, fileBytes, getHeadersForFile(file), e);
if (clientHasCurrentVersion(request)) {
Map<String, String> headers = new HashMap<String, String>();
headers.put(ETAG, _uniqueEtag);
writeHttpErrorResponse(request, 304, headers, e);
} else {
writeHttpByteResponse(request, fileBytes, getHeadersForFile(file), e);
}
} catch (IOException exp) {
writeHttpErrorResponse(request, 500, null, e);
}
}
private boolean clientHasCurrentVersion(HttpRequest request) {
String ifNoneMatch = request.getHeader(IF_NONE_MATCH);
if (ifNoneMatch != null) {
String[] clientKnownVersions = ifNoneMatch.split(",");
for (String clientKnownVersion : clientKnownVersions) {
if (clientKnownVersion.trim().equals(_uniqueEtag))
return true;
}
}
return false;
}
private Map<String, String> getHeadersForFile(File file) {
Map<String, String> headers = new HashMap<String, String>();
@@ -158,6 +178,7 @@ public class LotroHttpRequestHandler extends SimpleChannelUpstreamHandler {
contentType = "application/octet-stream";
}
headers.put(CONTENT_TYPE, contentType);
headers.put(ETAG, _uniqueEtag);
return headers;
}