initial code repo

[stor4nfv.git] / src / ceph / src / mon / FSCommands.h

diff --git a/src/ceph/src/mon/FSCommands.h b/src/ceph/src/mon/FSCommands.h
new file mode 100644 (file)
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+++ b/src/ceph/src/mon/FSCommands.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2017 Red Hat Ltd
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software 
+ * Foundation.  See file COPYING.
+ * 
+ */
+
+
+#ifndef FS_COMMANDS_H_
+#define FS_COMMANDS_H_
+
+#include "Monitor.h"
+
+#include "osd/OSDMap.h"
+#include "mds/FSMap.h"
+
+#include <string>
+#include <sstream>
+
+class FileSystemCommandHandler
+{
+protected:
+  std::string prefix;
+
+  /**
+   * Parse true|yes|1 style boolean string from `bool_str`
+   * `result` must be non-null.
+   * `ss` will be populated with error message on error.
+   *
+   * @return 0 on success, else -EINVAL
+   */
+  int parse_bool(
+      const std::string &bool_str,
+      bool *result,
+      std::ostream &ss);
+
+  /**
+   * Return 0 if the pool is suitable for use with CephFS, or
+   * in case of errors return a negative error code, and populate
+   * the passed stringstream with an explanation.
+   *
+   * @param metadata whether the pool will be for metadata (stricter checks)
+   */
+  int _check_pool(
+      OSDMap &osd_map,
+      const int64_t pool_id,
+      bool metadata,
+      bool force,
+      std::stringstream *ss) const;
+
+  virtual std::string const &get_prefix() {return prefix;}
+
+public:
+  FileSystemCommandHandler(const std::string &prefix_)
+    : prefix(prefix_)
+  {}
+
+  virtual ~FileSystemCommandHandler()
+  {}
+
+  bool can_handle(std::string const &prefix_)
+  {
+    return get_prefix() == prefix_;
+  }
+
+  static std::list<std::shared_ptr<FileSystemCommandHandler> > load(Paxos *paxos);
+
+  virtual bool batched_propose() {
+    return false;
+  }
+
+  virtual int handle(
+    Monitor *mon,
+    FSMap &fsmap,
+    MonOpRequestRef op,
+    map<string, cmd_vartype> &cmdmap,
+    std::stringstream &ss) = 0;
+};
+
+#endif