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authorDessie Linden <dessie@lindenlab.com>2010-11-15 12:05:05 -0800
committerDessie Linden <dessie@lindenlab.com>2010-11-15 12:05:05 -0800
commit5bfa6095db3a0a9c7367b7dde3f2e24e023cb7f4 (patch)
tree1ab6b0946d7bfb881a2ccfaa2382d24b46a6b729 /indra/llmessage/llavatarnamecache.h
parent65d847de38614a67ed1bdd86445c1c80f4638cc3 (diff)
parentc13f6afe73bea4311a91d65dde2f6e1c5bc453b3 (diff)
Added viewer-release.release-viewer.jira parameter to write build comment to DRTVWR-13
Diffstat (limited to 'indra/llmessage/llavatarnamecache.h')
-rw-r--r--indra/llmessage/llavatarnamecache.h103
1 files changed, 103 insertions, 0 deletions
diff --git a/indra/llmessage/llavatarnamecache.h b/indra/llmessage/llavatarnamecache.h
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+++ b/indra/llmessage/llavatarnamecache.h
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+/**
+ * @file llavatarnamecache.h
+ * @brief Provides lookup of avatar SLIDs ("bobsmith123") and display names
+ * ("James Cook") from avatar UUIDs.
+ *
+ * $LicenseInfo:firstyear=2010&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LLAVATARNAMECACHE_H
+#define LLAVATARNAMECACHE_H
+
+#include "llavatarname.h" // for convenience
+
+#include <boost/signals2.hpp>
+
+class LLSD;
+class LLUUID;
+
+namespace LLAvatarNameCache
+{
+
+ typedef boost::signals2::signal<void (void)> use_display_name_signal_t;
+
+ // Until the cache is set running, immediate lookups will fail and
+ // async lookups will be queued. This allows us to block requests
+ // until we know if the first region supports display names.
+ void initClass(bool running);
+ void cleanupClass();
+
+ void importFile(std::istream& istr);
+ void exportFile(std::ostream& ostr);
+
+ // On the viewer, usually a simulator capabilitity
+ // If empty, name cache will fall back to using legacy name
+ // lookup system
+ void setNameLookupURL(const std::string& name_lookup_url);
+
+ // Do we have a valid lookup URL, hence are we trying to use the
+ // new display name lookup system?
+ bool hasNameLookupURL();
+
+ // Periodically makes a batch request for display names not already in
+ // cache. Call once per frame.
+ void idle();
+
+ // If name is in cache, returns true and fills in provided LLAvatarName
+ // otherwise returns false
+ bool get(const LLUUID& agent_id, LLAvatarName *av_name);
+
+ // Callback types for get() below
+ typedef boost::signals2::signal<
+ void (const LLUUID& agent_id, const LLAvatarName& av_name)>
+ callback_signal_t;
+ typedef callback_signal_t::slot_type callback_slot_t;
+
+ // Fetches name information and calls callback.
+ // If name information is in cache, callback will be called immediately.
+ void get(const LLUUID& agent_id, callback_slot_t slot);
+
+ // Allow display names to be explicitly disabled for testing.
+ void setUseDisplayNames(bool use);
+ bool useDisplayNames();
+
+ void erase(const LLUUID& agent_id);
+
+ // Force a re-fetch of the most recent data, but keep the current
+ // data in cache
+ void fetch(const LLUUID& agent_id);
+
+ void insert(const LLUUID& agent_id, const LLAvatarName& av_name);
+
+ // Compute name expiration time from HTTP Cache-Control header,
+ // or return default value, in seconds from epoch.
+ F64 nameExpirationFromHeaders(LLSD headers);
+
+ void addUseDisplayNamesCallback(const use_display_name_signal_t::slot_type& cb);
+}
+
+// Parse a cache-control header to get the max-age delta-seconds.
+// Returns true if header has max-age param and it parses correctly.
+// Exported here to ease unit testing.
+bool max_age_from_cache_control(const std::string& cache_control, S32 *max_age);
+
+#endif