initial code repo

[stor4nfv.git] / src / ceph / src / tools / rbd / action / Status.cc

diff --git a/src/ceph/src/tools/rbd/action/Status.cc b/src/ceph/src/tools/rbd/action/Status.cc
new file mode 100644 (file)
index 0000000..7cd438a
--- /dev/null
+++ b/src/ceph/src/tools/rbd/action/Status.cc
@@ -0,0 +1,129 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "tools/rbd/ArgumentTypes.h"
+#include "tools/rbd/Shell.h"
+#include "tools/rbd/Utils.h"
+#include "include/rbd_types.h"
+#include "common/errno.h"
+#include "common/Formatter.h"
+#include <iostream>
+#include <boost/program_options.hpp>
+
+namespace rbd {
+namespace action {
+namespace status {
+
+namespace at = argument_types;
+namespace po = boost::program_options;
+
+static int do_show_status(librados::IoCtx &io_ctx, librbd::Image &image,
+                          const char *imgname, Formatter *f)
+{
+  uint8_t old_format;
+  int r;
+  std::string header_oid;
+  std::list<obj_watch_t> watchers;
+
+  r = image.old_format(&old_format);
+  if (r < 0)
+    return r;
+
+  if (old_format) {
+    header_oid = imgname;
+    header_oid += RBD_SUFFIX;
+  } else {
+    std::string id;
+    r = image.get_id(&id);
+    if (r < 0) {
+      return r;
+    }
+
+    header_oid = RBD_HEADER_PREFIX + id;
+  }
+
+  r = io_ctx.list_watchers(header_oid, &watchers);
+  if (r < 0)
+    return r;
+
+  if (f)
+    f->open_object_section("status");
+
+  if (f) {
+    f->open_array_section("watchers");
+    for (std::list<obj_watch_t>::iterator i = watchers.begin(); i != watchers.end(); ++i) {
+      f->open_object_section("watcher");
+      f->dump_string("address", i->addr);
+      f->dump_unsigned("client", i->watcher_id);
+      f->dump_unsigned("cookie", i->cookie);
+      f->close_section();
+    }
+    f->close_section();
+  } else {
+    if (watchers.size()) {
+      std::cout << "Watchers:" << std::endl;
+      for (std::list<obj_watch_t>::iterator i = watchers.begin();
+           i != watchers.end(); ++i) {
+        std::cout << "\twatcher=" << i->addr << " client." << i->watcher_id
+                  << " cookie=" << i->cookie << std::endl;
+      }
+    } else {
+      std::cout << "Watchers: none" << std::endl;
+    }
+  }
+  if (f) {
+    f->close_section();
+    f->flush(std::cout);
+  }
+
+  return 0;
+}
+
+void get_arguments(po::options_description *positional,
+                   po::options_description *options) {
+  at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE);
+  at::add_format_options(options);
+}
+
+int execute(const po::variables_map &vm) {
+  size_t arg_index = 0;
+  std::string pool_name;
+  std::string image_name;
+  std::string snap_name;
+  int r = utils::get_pool_image_snapshot_names(
+    vm, at::ARGUMENT_MODIFIER_NONE, &arg_index, &pool_name, &image_name,
+    &snap_name, utils::SNAPSHOT_PRESENCE_NONE, utils::SPEC_VALIDATION_NONE);
+  if (r < 0) {
+    return r;
+  }
+
+  at::Format::Formatter formatter;
+  r = utils::get_formatter(vm, &formatter);
+  if (r < 0) {
+    return r;
+  }
+
+  librados::Rados rados;
+  librados::IoCtx io_ctx;
+  librbd::Image image;
+  r = utils::init_and_open_image(pool_name, image_name, "", "", true, &rados,
+                                 &io_ctx, &image);
+  if (r < 0) {
+    return r;
+  }
+
+  r = do_show_status(io_ctx, image, image_name.c_str(), formatter.get());
+  if (r < 0) {
+    std::cerr << "rbd: show status failed: " << cpp_strerror(r) << std::endl;
+    return r;
+  }
+  return 0;
+}
+
+Shell::Action action(
+  {"status"}, {}, "Show the status of this image.", "", &get_arguments,
+  &execute);
+
+} // namespace status
+} // namespace action
+} // namespace rbd