New upstream version 8.1.0

meta/source/net/message/storage/creating/UnlinkLocalFileInodeMsgEx.h

@@ -0,0 +1,86 @@
+#pragma once
+
+#include <common/net/message/storage/creating/UnlinkLocalFileInodeMsg.h>
+#include <common/net/message/storage/creating/UnlinkLocalFileInodeRespMsg.h>
+#include <session/EntryLock.h>
+#include <storage/MetaStore.h>
+#include <net/message/MirroredMessage.h>
+
+class UnlinkLocalFileInodeResponseState : public MirroredMessageResponseState
+{
+   public:
+      UnlinkLocalFileInodeResponseState() : result(FhgfsOpsErr_INTERNAL), preUnlinkHardlinkCount(0) {}
+
+      UnlinkLocalFileInodeResponseState(FhgfsOpsErr result, unsigned linkCount) :
+         result(result), preUnlinkHardlinkCount(linkCount) {}
+
+      explicit UnlinkLocalFileInodeResponseState(Deserializer& des)
+      {
+         serialize(this, des);
+      }
+
+      UnlinkLocalFileInodeResponseState(UnlinkLocalFileInodeResponseState&& other) :
+         result(other.result), preUnlinkHardlinkCount(other.preUnlinkHardlinkCount) {}
+
+      void sendResponse(NetMessage::ResponseContext& ctx) override
+      {
+         UnlinkLocalFileInodeRespMsg resp(result, preUnlinkHardlinkCount);
+         ctx.sendResponse(resp);
+      }
+
+      void setResult(FhgfsOpsErr res) { this->result = res; }
+      void setPreUnlinkHardlinkCount(unsigned linkCount) { this->preUnlinkHardlinkCount = linkCount; }
+      bool changesObservableState() const override { return true; }
+
+   protected:
+      uint32_t serializerTag() const override { return NETMSGTYPE_UnlinkLocalFileInodeResp; }
+
+      template<typename This, typename Ctx>
+      static void serialize(This obj, Ctx& ctx)
+      {
+         ctx
+            % obj->result
+            % obj->preUnlinkHardlinkCount;
+      }
+
+      void serializeContents(Serializer& ser) const override
+      {
+         serialize(this, ser);
+      }
+
+   private:
+      FhgfsOpsErr result;
+      // The preUnlinkHardlinkCount represents the number of hardlinks that existed before
+      // the actual unlink happens. This is mainly needed for event logging purposes.
+      unsigned preUnlinkHardlinkCount;
+};
+
+class UnlinkLocalFileInodeMsgEx : public MirroredMessage<UnlinkLocalFileInodeMsg,
+   std::tuple<HashDirLock, FileIDLock>>
+{
+   public:
+      typedef UnlinkLocalFileInodeResponseState ResponseState;
+      virtual bool processIncoming(ResponseContext& ctx) override;
+
+      std::unique_ptr<MirroredMessageResponseState> executeLocally(ResponseContext& ctx,
+         bool isSecondary) override;
+
+      std::tuple<HashDirLock, FileIDLock> lock(EntryLockStore& store) override;
+
+      bool isMirrored() override { return getDelEntryInfo()->getIsBuddyMirrored(); }
+
+   private:
+      ResponseContext* rctx;
+
+      void forwardToSecondary(ResponseContext& ctx) override;
+
+      FhgfsOpsErr processSecondaryResponse(NetMessage& resp) override
+      {
+         return (FhgfsOpsErr) static_cast<UnlinkLocalFileInodeRespMsg&>(resp).getResult();
+      }
+
+      const char* mirrorLogContext() const override
+      {
+         return "UnlinkLocalFileInodeMsgEx/forward";
+      }
+};