Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 144 insertions, 0 deletions

diff --git a/src/crimson/osd/replicated_backend.cc b/src/crimson/osd/replicated_backend.cc
new file mode 100644
index 000000000..3a131278b
--- /dev/null
+++ b/src/crimson/osd/replicated_backend.cc
@@ -0,0 +1,144 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "replicated_backend.h"
+
+#include "messages/MOSDRepOpReply.h"
+
+#include "crimson/common/exception.h"
+#include "crimson/common/log.h"
+#include "crimson/os/futurized_store.h"
+#include "crimson/osd/shard_services.h"
+#include "osd/PeeringState.h"
+
+namespace {
+  seastar::logger& logger() {
+    return crimson::get_logger(ceph_subsys_osd);
+  }
+}
+
+ReplicatedBackend::ReplicatedBackend(pg_t pgid,
+                                     pg_shard_t whoami,
+                                     ReplicatedBackend::CollectionRef coll,
+                                     crimson::osd::ShardServices& shard_services)
+  : PGBackend{whoami.shard, coll, &shard_services.get_store()},
+    pgid{pgid},
+    whoami{whoami},
+    shard_services{shard_services}
+{}
+
+ReplicatedBackend::ll_read_errorator::future<ceph::bufferlist>
+ReplicatedBackend::_read(const hobject_t& hoid,
+                         const uint64_t off,
+                         const uint64_t len,
+                         const uint32_t flags)
+{
+  if (__builtin_expect(stopping, false)) {
+    throw crimson::common::system_shutdown_exception();
+  }
+  return store->read(coll, ghobject_t{hoid}, off, len, flags);
+}
+
+seastar::future<crimson::osd::acked_peers_t>
+ReplicatedBackend::_submit_transaction(std::set<pg_shard_t>&& pg_shards,
+                                       const hobject_t& hoid,
+                                       ceph::os::Transaction&& txn,
+                                       const osd_op_params_t& osd_op_p,
+                                       epoch_t min_epoch, epoch_t map_epoch,
+				       std::vector<pg_log_entry_t>&& log_entries)
+{
+  if (__builtin_expect(stopping, false)) {
+    throw crimson::common::system_shutdown_exception();
+  }
+  if (__builtin_expect((bool)peering, false)) {
+    throw crimson::common::actingset_changed(peering->is_primary);
+  }
+
+  const ceph_tid_t tid = next_txn_id++;
+  auto req_id = osd_op_p.req->get_reqid();
+  auto pending_txn =
+    pending_trans.emplace(tid, pg_shards.size()).first;
+  bufferlist encoded_txn;
+  encode(txn, encoded_txn);
+
+  return seastar::parallel_for_each(std::move(pg_shards),
+    [=, encoded_txn=std::move(encoded_txn), txn=std::move(txn)]
+    (auto pg_shard) mutable {
+      if (pg_shard == whoami) {
+        return shard_services.get_store().do_transaction(coll,std::move(txn));
+      } else {
+        auto m = make_message<MOSDRepOp>(req_id, whoami,
+                                         spg_t{pgid, pg_shard.shard}, hoid,
+                                         CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK,
+                                         map_epoch, min_epoch,
+                                         tid, osd_op_p.at_version);
+        m->set_data(encoded_txn);
+        pending_txn->second.acked_peers.push_back({pg_shard, eversion_t{}});
+	encode(log_entries, m->logbl);
+	m->pg_trim_to = osd_op_p.pg_trim_to;
+	m->min_last_complete_ondisk = osd_op_p.min_last_complete_ondisk;
+	m->set_rollback_to(osd_op_p.at_version);
+        // TODO: set more stuff. e.g., pg_states
+        return shard_services.send_to_osd(pg_shard.osd, std::move(m), map_epoch);
+      }
+    }).then([this, peers=pending_txn->second.weak_from_this()] {
+      if (!peers) {
+	// for now, only actingset_changed can cause peers
+	// to be nullptr
+	assert(peering);
+	throw crimson::common::actingset_changed(peering->is_primary);
+      }
+      if (--peers->pending == 0) {
+        peers->all_committed.set_value();
+	peers->all_committed = {};
+	return seastar::now();
+      }
+      return peers->all_committed.get_future();
+    }).then([pending_txn, this] {
+      auto acked_peers = std::move(pending_txn->second.acked_peers);
+      pending_trans.erase(pending_txn);
+      return seastar::make_ready_future<crimson::osd::acked_peers_t>(std::move(acked_peers));
+    });
+}
+
+void ReplicatedBackend::on_actingset_changed(peering_info_t pi)
+{
+  peering.emplace(pi);
+  crimson::common::actingset_changed e_actingset_changed{peering->is_primary};
+  for (auto& [tid, pending_txn] : pending_trans) {
+    pending_txn.all_committed.set_exception(e_actingset_changed);
+  }
+  pending_trans.clear();
+}
+
+void ReplicatedBackend::got_rep_op_reply(const MOSDRepOpReply& reply)
+{
+  auto found = pending_trans.find(reply.get_tid());
+  if (found == pending_trans.end()) {
+    logger().warn("{}: no matched pending rep op: {}", __func__, reply);
+    return;
+  }
+  auto& peers = found->second;
+  for (auto& peer : peers.acked_peers) {
+    if (peer.shard == reply.from) {
+      peer.last_complete_ondisk = reply.get_last_complete_ondisk();
+      if (--peers.pending == 0) {
+        peers.all_committed.set_value();
+        peers.all_committed = {};
+      }
+      return;
+    }
+  }
+}
+
+seastar::future<> ReplicatedBackend::stop()
+{
+  logger().info("ReplicatedBackend::stop {}", coll->get_cid());
+  stopping = true;
+  for (auto& [tid, pending_on] : pending_trans) {
+    pending_on.all_committed.set_exception(
+	crimson::common::system_shutdown_exception());
+  }
+  pending_trans.clear();
+  return seastar::now();
+}