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// -*- 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 instance_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 PayloadBase::encode(bufferlist &bl) const {
using ceph::encode;
encode(request_id, bl);
}
void PayloadBase::decode(__u8 version, bufferlist::const_iterator &iter) {
using ceph::decode;
decode(request_id, iter);
}
void PayloadBase::dump(Formatter *f) const {
f->dump_unsigned("request_id", request_id);
}
void ImagePayloadBase::encode(bufferlist &bl) const {
using ceph::encode;
PayloadBase::encode(bl);
encode(global_image_id, bl);
}
void ImagePayloadBase::decode(__u8 version, bufferlist::const_iterator &iter) {
using ceph::decode;
PayloadBase::decode(version, iter);
decode(global_image_id, iter);
}
void ImagePayloadBase::dump(Formatter *f) const {
PayloadBase::dump(f);
f->dump_string("global_image_id", global_image_id);
}
void PeerImageRemovedPayload::encode(bufferlist &bl) const {
using ceph::encode;
PayloadBase::encode(bl);
encode(global_image_id, bl);
encode(peer_mirror_uuid, bl);
}
void PeerImageRemovedPayload::decode(__u8 version, bufferlist::const_iterator &iter) {
using ceph::decode;
PayloadBase::decode(version, iter);
decode(global_image_id, iter);
decode(peer_mirror_uuid, iter);
}
void PeerImageRemovedPayload::dump(Formatter *f) const {
PayloadBase::dump(f);
f->dump_string("global_image_id", global_image_id);
f->dump_string("peer_mirror_uuid", peer_mirror_uuid);
}
void SyncPayloadBase::encode(bufferlist &bl) const {
using ceph::encode;
PayloadBase::encode(bl);
encode(sync_id, bl);
}
void SyncPayloadBase::decode(__u8 version, bufferlist::const_iterator &iter) {
using ceph::decode;
PayloadBase::decode(version, iter);
decode(sync_id, iter);
}
void SyncPayloadBase::dump(Formatter *f) const {
PayloadBase::dump(f);
f->dump_string("sync_id", sync_id);
}
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(2, 2, bl);
boost::apply_visitor(EncodePayloadVisitor(bl), payload);
ENCODE_FINISH(bl);
}
void NotifyMessage::decode(bufferlist::const_iterator& iter) {
DECODE_START(2, 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_IMAGE_ACQUIRE:
payload = ImageAcquirePayload();
break;
case NOTIFY_OP_IMAGE_RELEASE:
payload = ImageReleasePayload();
break;
case NOTIFY_OP_PEER_IMAGE_REMOVED:
payload = PeerImageRemovedPayload();
break;
case NOTIFY_OP_SYNC_REQUEST:
payload = SyncRequestPayload();
break;
case NOTIFY_OP_SYNC_START:
payload = SyncStartPayload();
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(ImageAcquirePayload()));
o.push_back(new NotifyMessage(ImageAcquirePayload(1, "gid")));
o.push_back(new NotifyMessage(ImageReleasePayload()));
o.push_back(new NotifyMessage(ImageReleasePayload(1, "gid")));
o.push_back(new NotifyMessage(PeerImageRemovedPayload()));
o.push_back(new NotifyMessage(PeerImageRemovedPayload(1, "gid", "uuid")));
o.push_back(new NotifyMessage(SyncRequestPayload()));
o.push_back(new NotifyMessage(SyncRequestPayload(1, "sync_id")));
o.push_back(new NotifyMessage(SyncStartPayload()));
o.push_back(new NotifyMessage(SyncStartPayload(1, "sync_id")));
}
std::ostream &operator<<(std::ostream &out, const NotifyOp &op) {
switch (op) {
case NOTIFY_OP_IMAGE_ACQUIRE:
out << "ImageAcquire";
break;
case NOTIFY_OP_IMAGE_RELEASE:
out << "ImageRelease";
break;
case NOTIFY_OP_PEER_IMAGE_REMOVED:
out << "PeerImageRemoved";
break;
case NOTIFY_OP_SYNC_REQUEST:
out << "SyncRequest";
break;
case NOTIFY_OP_SYNC_START:
out << "SyncStart";
break;
default:
out << "Unknown (" << static_cast<uint32_t>(op) << ")";
break;
}
return out;
}
void NotifyAckPayload::encode(bufferlist &bl) const {
using ceph::encode;
encode(instance_id, bl);
encode(request_id, bl);
encode(ret_val, bl);
}
void NotifyAckPayload::decode(bufferlist::const_iterator &iter) {
using ceph::decode;
decode(instance_id, iter);
decode(request_id, iter);
decode(ret_val, iter);
}
void NotifyAckPayload::dump(Formatter *f) const {
f->dump_string("instance_id", instance_id);
f->dump_unsigned("request_id", request_id);
f->dump_int("request_id", ret_val);
}
} // namespace instance_watcher
} // namespace mirror
} // namespace rbd
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