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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "librbd/TrashWatcher.h"
#include "include/rbd_types.h"
#include "include/rados/librados.hpp"
#include "common/errno.h"
#include "librbd/Utils.h"
#include "librbd/watcher/Utils.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::TrashWatcher: " << __func__ << ": "
namespace librbd {
using namespace trash_watcher;
using namespace watcher;
using librbd::util::create_rados_callback;
namespace {
static const uint64_t NOTIFY_TIMEOUT_MS = 5000;
} // anonymous namespace
template <typename I>
TrashWatcher<I>::TrashWatcher(librados::IoCtx &io_ctx, ContextWQ *work_queue)
: Watcher(io_ctx, work_queue, RBD_TRASH) {
}
template <typename I>
void TrashWatcher<I>::notify_image_added(
librados::IoCtx &io_ctx, const std::string& image_id,
const cls::rbd::TrashImageSpec& trash_image_spec, Context *on_finish) {
CephContext *cct = reinterpret_cast<CephContext*>(io_ctx.cct());
ldout(cct, 20) << dendl;
bufferlist bl;
encode(NotifyMessage{ImageAddedPayload{image_id, trash_image_spec}}, bl);
librados::AioCompletion *comp = create_rados_callback(on_finish);
int r = io_ctx.aio_notify(RBD_TRASH, comp, bl, NOTIFY_TIMEOUT_MS, nullptr);
ceph_assert(r == 0);
comp->release();
}
template <typename I>
void TrashWatcher<I>::notify_image_removed(librados::IoCtx &io_ctx,
const std::string& image_id,
Context *on_finish) {
CephContext *cct = reinterpret_cast<CephContext*>(io_ctx.cct());
ldout(cct, 20) << dendl;
bufferlist bl;
encode(NotifyMessage{ImageRemovedPayload{image_id}}, bl);
librados::AioCompletion *comp = create_rados_callback(on_finish);
int r = io_ctx.aio_notify(RBD_TRASH, comp, bl, NOTIFY_TIMEOUT_MS, nullptr);
ceph_assert(r == 0);
comp->release();
}
template <typename I>
void TrashWatcher<I>::handle_notify(uint64_t notify_id, uint64_t handle,
uint64_t notifier_id, bufferlist &bl) {
CephContext *cct = this->m_cct;
ldout(cct, 15) << "notify_id=" << notify_id << ", "
<< "handle=" << handle << dendl;
NotifyMessage notify_message;
try {
auto iter = bl.cbegin();
decode(notify_message, iter);
} catch (const buffer::error &err) {
lderr(cct) << "error decoding image notification: " << err.what()
<< dendl;
Context *ctx = new C_NotifyAck(this, notify_id, handle);
ctx->complete(0);
return;
}
apply_visitor(watcher::util::HandlePayloadVisitor<TrashWatcher<I>>(
this, notify_id, handle), notify_message.payload);
}
template <typename I>
bool TrashWatcher<I>::handle_payload(const ImageAddedPayload &payload,
Context *on_notify_ack) {
CephContext *cct = this->m_cct;
ldout(cct, 20) << dendl;
handle_image_added(payload.image_id, payload.trash_image_spec);
return true;
}
template <typename I>
bool TrashWatcher<I>::handle_payload(const ImageRemovedPayload &payload,
Context *on_notify_ack) {
CephContext *cct = this->m_cct;
ldout(cct, 20) << dendl;
handle_image_removed(payload.image_id);
return true;
}
template <typename I>
bool TrashWatcher<I>::handle_payload(const UnknownPayload &payload,
Context *on_notify_ack) {
return true;
}
} // namespace librbd
template class librbd::TrashWatcher<librbd::ImageCtx>;
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