commit | 65c8345a96c4de35ccf4ddc09a6bc74ce6a429f8 | [log] [tgz] |
---|---|---|
author | Dave Borowitz <dborowitz@google.com> | Sun Oct 01 11:15:40 2017 +0100 |
committer | Dave Borowitz <dborowitz@google.com> | Sun Oct 01 11:39:14 2017 +0100 |
tree | 16f1f59cedde7430441a887c1cb09dff4ff18d80 | |
parent | 512eb25dcd7f21069d921712c24e7cb3436f5de1 [diff] |
ResourceServlet: Consistently use class load time as mtime The GWT UI static servlets (e.g. WarGwtUiServlet) were already using class load time as the "mtime" of a file, to account for the fact that the build system always sets the mtime of zipfile entries to the Unix epoch. (This is intentional, to keep bazel builds reproducible.) PolyGerrit has the same problem served from a WAR file, but was not applying this hack. Complicating the situation is that the same class (PolyGerritUiServlet) is used for the dev server, where we can trust the mtime. Hackily check whether the path in question is on-disk in the implementation of getLastModifiedTime. There was also a bug in ResourceServlet#maybeStream that was bypassing getLastModifiedTime when checking If-Modified-Since; fix that as well. While we're in here, fix the other broken class in this hierarchy, WarDocServlet. In retrospect, it may have been a mistake to make ResourceServlet try to handle all possible caching behaviors, since it makes bugs like this all too easy to introduce. Long term, may want to disentangle the on-disk implementation, which may depend on mtime to determine staleness, from the zipfile implementation, which shouldn't. Bug: Issue 6885 Change-Id: Iea041774c1005cb9918c462d01aef05cff61da23
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