initial code repo

[stor4nfv.git] / src / ceph / src / client / hypertable / CephBroker.h

diff --git a/src/ceph/src/client/hypertable/CephBroker.h b/src/ceph/src/client/hypertable/CephBroker.h
new file mode 100644 (file)
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+++ b/src/ceph/src/client/hypertable/CephBroker.h
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+/** -*- C++ -*-
+ * Copyright (C) 2009-2011 New Dream Network
+ *
+ * This file is part of Hypertable.
+ *
+ * Hypertable is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or any later version.
+ *
+ * Hypertable is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Hypertable. If not, see <http://www.gnu.org/licenses/>
+ *
+ * Authors:
+ * Gregory Farnum <gfarnum@gmail.com>
+ * Colin McCabe <cmccabe@alumni.cmu.edu>
+ */
+
+#ifndef HYPERTABLE_CEPHBROKER_H
+#define HYPERTABLE_CEPHBROKER_H
+
+extern "C" {
+#include <unistd.h>
+}
+#include <atomic>
+#include "Common/String.h"
+#include "Common/Properties.h"
+
+#include "DfsBroker/Lib/Broker.h"
+
+#include <cephfs/libcephfs.h>
+
+namespace Hypertable {
+  using namespace DfsBroker;
+  /**
+   *
+   */
+  class OpenFileDataCeph : public OpenFileData {
+  public:
+    OpenFileDataCeph(struct ceph_mount_info *cmount_, const String& fname,
+                    int _fd, int _flags);
+    virtual ~OpenFileDataCeph();
+    struct ceph_mount_info *cmount;
+    int fd;
+    int flags;
+    String filename;
+  };
+
+  /**
+   *
+   */
+  class OpenFileDataCephPtr : public OpenFileDataPtr {
+  public:
+    OpenFileDataCephPtr() : OpenFileDataPtr() { }
+    explicit OpenFileDataCephPtr(OpenFileDataCeph *ofdl) : OpenFileDataPtr(ofdl, true) { }
+    OpenFileDataCeph *operator->() const { return static_cast<OpenFileDataCeph *>(get()); }
+  };
+
+  /**
+   *
+   */
+  class CephBroker : public DfsBroker::Broker {
+  public:
+    explicit CephBroker(PropertiesPtr& cfg);
+    virtual ~CephBroker();
+
+    virtual void open(ResponseCallbackOpen *cb, const char *fname,
+                      uint32_t flags, uint32_t bufsz);
+    virtual void
+    create(ResponseCallbackOpen *cb, const char *fname, uint32_t flags,
+           int32_t bufsz, int16_t replication, int64_t blksz);
+    virtual void close(ResponseCallback *cb, uint32_t fd);
+    virtual void read(ResponseCallbackRead *cb, uint32_t fd, uint32_t amount);
+    virtual void append(ResponseCallbackAppend *cb, uint32_t fd,
+                        uint32_t amount, const void *data, bool sync);
+    virtual void seek(ResponseCallback *cb, uint32_t fd, uint64_t offset);
+    virtual void remove(ResponseCallback *cb, const char *fname);
+    virtual void length(ResponseCallbackLength *cb, const char *fname, bool);
+    virtual void pread(ResponseCallbackRead *cb, uint32_t fd, uint64_t offset,
+                       uint32_t amount, bool);
+    virtual void mkdirs(ResponseCallback *cb, const char *dname);
+    virtual void rmdir(ResponseCallback *cb, const char *dname);
+    virtual void flush(ResponseCallback *cb, uint32_t fd);
+    virtual void status(ResponseCallback *cb);
+    virtual void shutdown(ResponseCallback *cb);
+    virtual void readdir(ResponseCallbackReaddir *cb, const char *dname);
+    virtual void exists(ResponseCallbackExists *cb, const char *fname);
+    virtual void rename(ResponseCallback *cb, const char *src, const char *dst);
+    virtual void debug(ResponseCallback *, int32_t command,
+                       StaticBuffer &serialized_parameters);
+
+  private:
+    struct ceph_mount_info *cmount;
+    static std::atomic<int> ms_next_fd;
+
+    virtual void report_error(ResponseCallback *cb, int error);
+
+    void make_abs_path(const char *fname, String& abs) {
+      if (fname[0] == '/')
+       abs = fname;
+      else
+       abs = m_root_dir + "/" + fname;
+    }
+
+    int rmdir_recursive(const char *directory);
+
+    bool m_verbose;
+    String m_root_dir;
+  };
+}
+
+#endif //HYPERTABLE_CEPH_BROKER_H