summaryrefslogtreecommitdiffstats
path: root/src/rgw/rgw_realm_watcher.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
commit483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch)
treee5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/rgw/rgw_realm_watcher.h
parentInitial commit. (diff)
downloadceph-483eb2f56657e8e7f419ab1a4fab8dce9ade8609.tar.xz
ceph-483eb2f56657e8e7f419ab1a4fab8dce9ade8609.zip
Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/rgw/rgw_realm_watcher.h')
-rw-r--r--src/rgw/rgw_realm_watcher.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/src/rgw/rgw_realm_watcher.h b/src/rgw/rgw_realm_watcher.h
new file mode 100644
index 00000000..03d7e939
--- /dev/null
+++ b/src/rgw/rgw_realm_watcher.h
@@ -0,0 +1,69 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef RGW_REALM_WATCHER_H
+#define RGW_REALM_WATCHER_H
+
+#include "include/rados/librados.hpp"
+#include "include/ceph_assert.h"
+#include "common/Timer.h"
+#include "common/Cond.h"
+
+class RGWRados;
+class RGWRealm;
+
+enum class RGWRealmNotify {
+ Reload,
+ ZonesNeedPeriod,
+};
+WRITE_RAW_ENCODER(RGWRealmNotify);
+
+/**
+ * RGWRealmWatcher establishes a watch on the current RGWRealm's control object,
+ * and forwards notifications to registered observers.
+ */
+class RGWRealmWatcher : public librados::WatchCtx2 {
+ public:
+ /**
+ * Watcher is an interface that allows the RGWRealmWatcher to pass
+ * notifications on to other interested objects.
+ */
+ class Watcher {
+ public:
+ virtual ~Watcher() = default;
+
+ virtual void handle_notify(RGWRealmNotify type,
+ bufferlist::const_iterator& p) = 0;
+ };
+
+ RGWRealmWatcher(CephContext* cct, const RGWRealm& realm);
+ ~RGWRealmWatcher() override;
+
+ /// register a watcher for the given notification type
+ void add_watcher(RGWRealmNotify type, Watcher& watcher);
+
+ /// respond to realm notifications by calling the appropriate watcher
+ void handle_notify(uint64_t notify_id, uint64_t cookie,
+ uint64_t notifier_id, bufferlist& bl) override;
+
+ /// reestablish the watch if it gets disconnected
+ void handle_error(uint64_t cookie, int err) override;
+
+ private:
+ CephContext *const cct;
+
+ /// keep a separate Rados client whose lifetime is independent of RGWRados
+ /// so that we don't miss notifications during realm reconfiguration
+ librados::Rados rados;
+ librados::IoCtx pool_ctx;
+ uint64_t watch_handle = 0;
+ std::string watch_oid;
+
+ int watch_start(const RGWRealm& realm);
+ int watch_restart();
+ void watch_stop();
+
+ std::map<RGWRealmNotify, Watcher&> watchers;
+};
+
+#endif // RGW_REALM_WATCHER_H