diff options
Diffstat (limited to '')
-rw-r--r-- | src/tools/rbd_mirror/leader_watcher/Types.cc | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/tools/rbd_mirror/leader_watcher/Types.cc b/src/tools/rbd_mirror/leader_watcher/Types.cc new file mode 100644 index 000000000..d2fb7908f --- /dev/null +++ b/src/tools/rbd_mirror/leader_watcher/Types.cc @@ -0,0 +1,161 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#include "Types.h" +#include "include/ceph_assert.h" +#include "include/stringify.h" +#include "common/Formatter.h" + +namespace rbd { +namespace mirror { +namespace leader_watcher { + +namespace { + +class EncodePayloadVisitor : public boost::static_visitor<void> { +public: + explicit EncodePayloadVisitor(bufferlist &bl) : m_bl(bl) {} + + template <typename Payload> + inline void operator()(const Payload &payload) const { + using ceph::encode; + encode(static_cast<uint32_t>(Payload::NOTIFY_OP), m_bl); + payload.encode(m_bl); + } + +private: + bufferlist &m_bl; +}; + +class DecodePayloadVisitor : public boost::static_visitor<void> { +public: + DecodePayloadVisitor(__u8 version, bufferlist::const_iterator &iter) + : m_version(version), m_iter(iter) {} + + template <typename Payload> + inline void operator()(Payload &payload) const { + payload.decode(m_version, m_iter); + } + +private: + __u8 m_version; + bufferlist::const_iterator &m_iter; +}; + +class DumpPayloadVisitor : public boost::static_visitor<void> { +public: + explicit DumpPayloadVisitor(Formatter *formatter) : m_formatter(formatter) {} + + template <typename Payload> + inline void operator()(const Payload &payload) const { + NotifyOp notify_op = Payload::NOTIFY_OP; + m_formatter->dump_string("notify_op", stringify(notify_op)); + payload.dump(m_formatter); + } + +private: + ceph::Formatter *m_formatter; +}; + +} // anonymous namespace + +void HeartbeatPayload::encode(bufferlist &bl) const { +} + +void HeartbeatPayload::decode(__u8 version, bufferlist::const_iterator &iter) { +} + +void HeartbeatPayload::dump(Formatter *f) const { +} + +void LockAcquiredPayload::encode(bufferlist &bl) const { +} + +void LockAcquiredPayload::decode(__u8 version, bufferlist::const_iterator &iter) { +} + +void LockAcquiredPayload::dump(Formatter *f) const { +} + +void LockReleasedPayload::encode(bufferlist &bl) const { +} + +void LockReleasedPayload::decode(__u8 version, bufferlist::const_iterator &iter) { +} + +void LockReleasedPayload::dump(Formatter *f) const { +} + +void UnknownPayload::encode(bufferlist &bl) const { + ceph_abort(); +} + +void UnknownPayload::decode(__u8 version, bufferlist::const_iterator &iter) { +} + +void UnknownPayload::dump(Formatter *f) const { +} + +void NotifyMessage::encode(bufferlist& bl) const { + ENCODE_START(1, 1, bl); + boost::apply_visitor(EncodePayloadVisitor(bl), payload); + ENCODE_FINISH(bl); +} + +void NotifyMessage::decode(bufferlist::const_iterator& iter) { + DECODE_START(1, iter); + + uint32_t notify_op; + decode(notify_op, iter); + + // select the correct payload variant based upon the encoded op + switch (notify_op) { + case NOTIFY_OP_HEARTBEAT: + payload = HeartbeatPayload(); + break; + case NOTIFY_OP_LOCK_ACQUIRED: + payload = LockAcquiredPayload(); + break; + case NOTIFY_OP_LOCK_RELEASED: + payload = LockReleasedPayload(); + break; + default: + payload = UnknownPayload(); + break; + } + + apply_visitor(DecodePayloadVisitor(struct_v, iter), payload); + DECODE_FINISH(iter); +} + +void NotifyMessage::dump(Formatter *f) const { + apply_visitor(DumpPayloadVisitor(f), payload); +} + +void NotifyMessage::generate_test_instances(std::list<NotifyMessage *> &o) { + o.push_back(new NotifyMessage(HeartbeatPayload())); + o.push_back(new NotifyMessage(LockAcquiredPayload())); + o.push_back(new NotifyMessage(LockReleasedPayload())); +} + +std::ostream &operator<<(std::ostream &out, const NotifyOp &op) { + switch (op) { + case NOTIFY_OP_HEARTBEAT: + out << "Heartbeat"; + break; + case NOTIFY_OP_LOCK_ACQUIRED: + out << "LockAcquired"; + break; + case NOTIFY_OP_LOCK_RELEASED: + out << "LockReleased"; + break; + default: + out << "Unknown (" << static_cast<uint32_t>(op) << ")"; + break; + } + return out; +} + +} // namespace leader_watcher +} // namespace mirror +} // namespace librbd |