--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "journal/Journaler.h"
+#include "include/stringify.h"
+#include "common/errno.h"
+#include "common/Timer.h"
+#include "common/WorkQueue.h"
+#include "journal/Entry.h"
+#include "journal/FutureImpl.h"
+#include "journal/JournalMetadata.h"
+#include "journal/JournalPlayer.h"
+#include "journal/JournalRecorder.h"
+#include "journal/JournalTrimmer.h"
+#include "journal/ReplayEntry.h"
+#include "journal/ReplayHandler.h"
+#include "cls/journal/cls_journal_client.h"
+#include "cls/journal/cls_journal_types.h"
+#include "Utils.h"
+
+#define dout_subsys ceph_subsys_journaler
+#undef dout_prefix
+#define dout_prefix *_dout << "Journaler: " << this << " "
+
+namespace journal {
+
+namespace {
+
+static const std::string JOURNAL_HEADER_PREFIX = "journal.";
+static const std::string JOURNAL_OBJECT_PREFIX = "journal_data.";
+
+} // anonymous namespace
+
+using namespace cls::journal;
+using utils::rados_ctx_callback;
+
+std::string Journaler::header_oid(const std::string &journal_id) {
+ return JOURNAL_HEADER_PREFIX + journal_id;
+}
+
+std::string Journaler::object_oid_prefix(int pool_id,
+ const std::string &journal_id) {
+ return JOURNAL_OBJECT_PREFIX + stringify(pool_id) + "." + journal_id + ".";
+}
+
+Journaler::Threads::Threads(CephContext *cct)
+ : timer_lock("Journaler::timer_lock") {
+ thread_pool = new ThreadPool(cct, "Journaler::thread_pool", "tp_journal", 1);
+ thread_pool->start();
+
+ work_queue = new ContextWQ("Journaler::work_queue", 60, thread_pool);
+
+ timer = new SafeTimer(cct, timer_lock, true);
+ timer->init();
+}
+
+Journaler::Threads::~Threads() {
+ {
+ Mutex::Locker timer_locker(timer_lock);
+ timer->shutdown();
+ }
+ delete timer;
+
+ work_queue->drain();
+ delete work_queue;
+
+ thread_pool->stop();
+ delete thread_pool;
+}
+
+Journaler::Journaler(librados::IoCtx &header_ioctx,
+ const std::string &journal_id,
+ const std::string &client_id, const Settings &settings)
+ : m_threads(new Threads(reinterpret_cast<CephContext*>(header_ioctx.cct()))),
+ m_client_id(client_id) {
+ set_up(m_threads->work_queue, m_threads->timer, &m_threads->timer_lock,
+ header_ioctx, journal_id, settings);
+}
+
+Journaler::Journaler(ContextWQ *work_queue, SafeTimer *timer,
+ Mutex *timer_lock, librados::IoCtx &header_ioctx,
+ const std::string &journal_id,
+ const std::string &client_id, const Settings &settings)
+ : m_client_id(client_id) {
+ set_up(work_queue, timer, timer_lock, header_ioctx, journal_id,
+ settings);
+}
+
+void Journaler::set_up(ContextWQ *work_queue, SafeTimer *timer,
+ Mutex *timer_lock, librados::IoCtx &header_ioctx,
+ const std::string &journal_id,
+ const Settings &settings) {
+ m_header_ioctx.dup(header_ioctx);
+ m_cct = reinterpret_cast<CephContext *>(m_header_ioctx.cct());
+
+ m_header_oid = header_oid(journal_id);
+ m_object_oid_prefix = object_oid_prefix(m_header_ioctx.get_id(), journal_id);
+
+ m_metadata = new JournalMetadata(work_queue, timer, timer_lock,
+ m_header_ioctx, m_header_oid, m_client_id,
+ settings);
+ m_metadata->get();
+}
+
+Journaler::~Journaler() {
+ if (m_metadata != nullptr) {
+ assert(!m_metadata->is_initialized());
+ if (!m_initialized) {
+ // never initialized -- ensure any in-flight ops are complete
+ // since we wouldn't expect shut_down to be invoked
+ m_metadata->wait_for_ops();
+ }
+ m_metadata->put();
+ m_metadata = nullptr;
+ }
+ assert(m_trimmer == nullptr);
+ assert(m_player == nullptr);
+ assert(m_recorder == nullptr);
+
+ delete m_threads;
+}
+
+void Journaler::exists(Context *on_finish) const {
+ librados::ObjectReadOperation op;
+ op.stat(NULL, NULL, NULL);
+
+ librados::AioCompletion *comp =
+ librados::Rados::aio_create_completion(on_finish, nullptr, rados_ctx_callback);
+ int r = m_header_ioctx.aio_operate(m_header_oid, comp, &op, NULL);
+ assert(r == 0);
+ comp->release();
+}
+
+void Journaler::init(Context *on_init) {
+ m_initialized = true;
+ m_metadata->init(new C_InitJournaler(this, on_init));
+}
+
+int Journaler::init_complete() {
+ int64_t pool_id = m_metadata->get_pool_id();
+
+ if (pool_id < 0 || pool_id == m_header_ioctx.get_id()) {
+ ldout(m_cct, 20) << "using image pool for journal data" << dendl;
+ m_data_ioctx.dup(m_header_ioctx);
+ } else {
+ ldout(m_cct, 20) << "using pool id=" << pool_id << " for journal data"
+ << dendl;
+ librados::Rados rados(m_header_ioctx);
+ int r = rados.ioctx_create2(pool_id, m_data_ioctx);
+ if (r < 0) {
+ if (r == -ENOENT) {
+ ldout(m_cct, 1) << "pool id=" << pool_id << " no longer exists"
+ << dendl;
+ }
+ return r;
+ }
+ }
+ m_trimmer = new JournalTrimmer(m_data_ioctx, m_object_oid_prefix,
+ m_metadata);
+ return 0;
+}
+
+void Journaler::shut_down() {
+ C_SaferCond ctx;
+ shut_down(&ctx);
+ ctx.wait();
+}
+
+void Journaler::shut_down(Context *on_finish) {
+ assert(m_player == nullptr);
+ assert(m_recorder == nullptr);
+
+ JournalMetadata *metadata = nullptr;
+ std::swap(metadata, m_metadata);
+ assert(metadata != nullptr);
+
+ on_finish = new FunctionContext([metadata, on_finish](int r) {
+ metadata->put();
+ on_finish->complete(0);
+ });
+
+ JournalTrimmer *trimmer = nullptr;
+ std::swap(trimmer, m_trimmer);
+ if (trimmer == nullptr) {
+ metadata->shut_down(on_finish);
+ return;
+ }
+
+ on_finish = new FunctionContext([trimmer, metadata, on_finish](int r) {
+ delete trimmer;
+ metadata->shut_down(on_finish);
+ });
+ trimmer->shut_down(on_finish);
+}
+
+bool Journaler::is_initialized() const {
+ return m_metadata->is_initialized();
+}
+
+void Journaler::get_immutable_metadata(uint8_t *order, uint8_t *splay_width,
+ int64_t *pool_id, Context *on_finish) {
+ m_metadata->get_immutable_metadata(order, splay_width, pool_id, on_finish);
+}
+
+void Journaler::get_mutable_metadata(uint64_t *minimum_set,
+ uint64_t *active_set,
+ RegisteredClients *clients,
+ Context *on_finish) {
+ m_metadata->get_mutable_metadata(minimum_set, active_set, clients, on_finish);
+}
+
+void Journaler::create(uint8_t order, uint8_t splay_width,
+ int64_t pool_id, Context *on_finish) {
+ if (order > 64 || order < 12) {
+ lderr(m_cct) << "order must be in the range [12, 64]" << dendl;
+ on_finish->complete(-EDOM);
+ return;
+ }
+ if (splay_width == 0) {
+ on_finish->complete(-EINVAL);
+ return;
+ }
+
+ ldout(m_cct, 5) << "creating new journal: " << m_header_oid << dendl;
+
+ librados::ObjectWriteOperation op;
+ client::create(&op, order, splay_width, pool_id);
+
+ librados::AioCompletion *comp =
+ librados::Rados::aio_create_completion(on_finish, nullptr, rados_ctx_callback);
+ int r = m_header_ioctx.aio_operate(m_header_oid, comp, &op);
+ assert(r == 0);
+ comp->release();
+}
+
+void Journaler::remove(bool force, Context *on_finish) {
+ // chain journal removal (reverse order)
+ on_finish = new FunctionContext([this, on_finish](int r) {
+ librados::AioCompletion *comp = librados::Rados::aio_create_completion(
+ on_finish, nullptr, utils::rados_ctx_callback);
+ r = m_header_ioctx.aio_remove(m_header_oid, comp);
+ assert(r == 0);
+ comp->release();
+ });
+
+ on_finish = new FunctionContext([this, force, on_finish](int r) {
+ m_trimmer->remove_objects(force, on_finish);
+ });
+
+ m_metadata->shut_down(on_finish);
+}
+
+void Journaler::flush_commit_position(Context *on_safe) {
+ m_metadata->flush_commit_position(on_safe);
+}
+
+void Journaler::add_listener(JournalMetadataListener *listener) {
+ m_metadata->add_listener(listener);
+}
+
+void Journaler::remove_listener(JournalMetadataListener *listener) {
+ m_metadata->remove_listener(listener);
+}
+
+int Journaler::register_client(const bufferlist &data) {
+ C_SaferCond cond;
+ register_client(data, &cond);
+ return cond.wait();
+}
+
+int Journaler::unregister_client() {
+ C_SaferCond cond;
+ unregister_client(&cond);
+ return cond.wait();
+}
+
+void Journaler::register_client(const bufferlist &data, Context *on_finish) {
+ return m_metadata->register_client(data, on_finish);
+}
+
+void Journaler::update_client(const bufferlist &data, Context *on_finish) {
+ return m_metadata->update_client(data, on_finish);
+}
+
+void Journaler::unregister_client(Context *on_finish) {
+ return m_metadata->unregister_client(on_finish);
+}
+
+void Journaler::get_client(const std::string &client_id,
+ cls::journal::Client *client,
+ Context *on_finish) {
+ m_metadata->get_client(client_id, client, on_finish);
+}
+
+int Journaler::get_cached_client(const std::string &client_id,
+ cls::journal::Client *client) {
+ RegisteredClients clients;
+ m_metadata->get_registered_clients(&clients);
+
+ auto it = clients.find({client_id, {}});
+ if (it == clients.end()) {
+ return -ENOENT;
+ }
+
+ *client = *it;
+ return 0;
+}
+
+void Journaler::allocate_tag(const bufferlist &data, cls::journal::Tag *tag,
+ Context *on_finish) {
+ m_metadata->allocate_tag(cls::journal::Tag::TAG_CLASS_NEW, data, tag,
+ on_finish);
+}
+
+void Journaler::allocate_tag(uint64_t tag_class, const bufferlist &data,
+ cls::journal::Tag *tag, Context *on_finish) {
+ m_metadata->allocate_tag(tag_class, data, tag, on_finish);
+}
+
+void Journaler::get_tag(uint64_t tag_tid, Tag *tag, Context *on_finish) {
+ m_metadata->get_tag(tag_tid, tag, on_finish);
+}
+
+void Journaler::get_tags(uint64_t tag_class, Tags *tags, Context *on_finish) {
+ m_metadata->get_tags(0, tag_class, tags, on_finish);
+}
+
+void Journaler::get_tags(uint64_t start_after_tag_tid, uint64_t tag_class,
+ Tags *tags, Context *on_finish) {
+ m_metadata->get_tags(start_after_tag_tid, tag_class, tags, on_finish);
+}
+
+void Journaler::start_replay(ReplayHandler *replay_handler) {
+ create_player(replay_handler);
+ m_player->prefetch();
+}
+
+void Journaler::start_live_replay(ReplayHandler *replay_handler,
+ double interval) {
+ create_player(replay_handler);
+ m_player->prefetch_and_watch(interval);
+}
+
+bool Journaler::try_pop_front(ReplayEntry *replay_entry,
+ uint64_t *tag_tid) {
+ assert(m_player != NULL);
+
+ Entry entry;
+ uint64_t commit_tid;
+ if (!m_player->try_pop_front(&entry, &commit_tid)) {
+ return false;
+ }
+
+ *replay_entry = ReplayEntry(entry.get_data(), commit_tid);
+ if (tag_tid != nullptr) {
+ *tag_tid = entry.get_tag_tid();
+ }
+ return true;
+}
+
+void Journaler::stop_replay() {
+ C_SaferCond ctx;
+ stop_replay(&ctx);
+ ctx.wait();
+}
+
+void Journaler::stop_replay(Context *on_finish) {
+ JournalPlayer *player = nullptr;
+ std::swap(player, m_player);
+ assert(player != nullptr);
+
+ on_finish = new FunctionContext([player, on_finish](int r) {
+ delete player;
+ on_finish->complete(r);
+ });
+ player->shut_down(on_finish);
+}
+
+void Journaler::committed(const ReplayEntry &replay_entry) {
+ m_trimmer->committed(replay_entry.get_commit_tid());
+}
+
+void Journaler::committed(const Future &future) {
+ FutureImplPtr future_impl = future.get_future_impl();
+ m_trimmer->committed(future_impl->get_commit_tid());
+}
+
+void Journaler::start_append(int flush_interval, uint64_t flush_bytes,
+ double flush_age) {
+ assert(m_recorder == NULL);
+
+ // TODO verify active object set >= current replay object set
+
+ m_recorder = new JournalRecorder(m_data_ioctx, m_object_oid_prefix,
+ m_metadata, flush_interval, flush_bytes,
+ flush_age);
+}
+
+void Journaler::stop_append(Context *on_safe) {
+ JournalRecorder *recorder = nullptr;
+ std::swap(recorder, m_recorder);
+ assert(recorder != nullptr);
+
+ on_safe = new FunctionContext([recorder, on_safe](int r) {
+ delete recorder;
+ on_safe->complete(r);
+ });
+ recorder->flush(on_safe);
+}
+
+uint64_t Journaler::get_max_append_size() const {
+ uint64_t max_payload_size = m_metadata->get_object_size() -
+ Entry::get_fixed_size();
+ if (m_metadata->get_settings().max_payload_bytes > 0) {
+ max_payload_size = MIN(max_payload_size,
+ m_metadata->get_settings().max_payload_bytes);
+ }
+ return max_payload_size;
+}
+
+Future Journaler::append(uint64_t tag_tid, const bufferlist &payload_bl) {
+ return m_recorder->append(tag_tid, payload_bl);
+}
+
+void Journaler::flush_append(Context *on_safe) {
+ m_recorder->flush(on_safe);
+}
+
+void Journaler::create_player(ReplayHandler *replay_handler) {
+ assert(m_player == NULL);
+ m_player = new JournalPlayer(m_data_ioctx, m_object_oid_prefix, m_metadata,
+ replay_handler);
+}
+
+void Journaler::get_metadata(uint8_t *order, uint8_t *splay_width,
+ int64_t *pool_id) {
+ assert(m_metadata != NULL);
+
+ *order = m_metadata->get_order();
+ *splay_width = m_metadata->get_splay_width();
+ *pool_id = m_metadata->get_pool_id();
+}
+
+std::ostream &operator<<(std::ostream &os,
+ const Journaler &journaler) {
+ os << "[metadata=";
+ if (journaler.m_metadata != NULL) {
+ os << *journaler.m_metadata;
+ } else {
+ os << "NULL";
+ }
+ os << "]";
+ return os;
+}
+
+} // namespace journal
Code Review / stor4nfv.git / blobdiff