--- /dev/null
+// -*- 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 "common/errno.h"
+#include "common/Formatter.h"
+#include "common/TextTable.h"
+#include <iostream>
+#include <boost/program_options.hpp>
+
+namespace rbd {
+namespace action {
+namespace image_meta {
+
+namespace at = argument_types;
+namespace po = boost::program_options;
+
+namespace {
+
+void add_key_option(po::options_description *positional) {
+ positional->add_options()
+ ("key", "image meta key");
+}
+
+int get_key(const po::variables_map &vm, std::string *key) {
+ *key = utils::get_positional_argument(vm, 1);
+ if (key->empty()) {
+ std::cerr << "rbd: metadata key was not specified" << std::endl;
+ return -EINVAL;
+ }
+ return 0;
+}
+
+const uint32_t MAX_KEYS = 64;
+
+} // anonymous namespace
+
+static int do_metadata_list(librbd::Image& image, Formatter *f)
+{
+ int r;
+ TextTable tbl;
+
+ size_t count = 0;
+ std::string last_key;
+ bool more_results = true;
+ while (more_results) {
+ std::map<std::string, bufferlist> pairs;
+ r = image.metadata_list(last_key, MAX_KEYS, &pairs);
+ if (r < 0) {
+ std::cerr << "failed to list metadata of image : " << cpp_strerror(r)
+ << std::endl;
+ return r;
+ }
+
+ more_results = (pairs.size() == MAX_KEYS);
+ if (!pairs.empty()) {
+ if (count == 0) {
+ if (f) {
+ f->open_object_section("metadatas");
+ } else {
+ tbl.define_column("Key", TextTable::LEFT, TextTable::LEFT);
+ tbl.define_column("Value", TextTable::LEFT, TextTable::LEFT);
+ }
+ }
+
+ last_key = pairs.rbegin()->first;
+ count += pairs.size();
+
+ for (auto kv : pairs) {
+ std::string val(kv.second.c_str(), kv.second.length());
+ if (f) {
+ f->dump_string(kv.first.c_str(), val.c_str());
+ } else {
+ tbl << kv.first << val << TextTable::endrow;
+ }
+ }
+ }
+ }
+
+ if (f == nullptr) {
+ bool single = (count == 1);
+ std::cout << "There " << (single ? "is" : "are") << " " << count << " "
+ << (single ? "metadatum" : "metadata") << " on this image"
+ << (count == 0 ? "." : ":") << std::endl;
+ }
+
+ if (count > 0) {
+ if (f) {
+ f->close_section();
+ f->flush(std::cout);
+ } else {
+ std::cout << std::endl << tbl;
+ }
+ }
+ return 0;
+}
+
+static int do_metadata_set(librbd::Image& image, const char *key,
+ const char *value)
+{
+ int r = image.metadata_set(key, value);
+ if (r < 0) {
+ std::cerr << "failed to set metadata " << key << " of image : "
+ << cpp_strerror(r) << std::endl;
+ }
+ return r;
+}
+
+static int do_metadata_remove(librbd::Image& image, const char *key)
+{
+ int r = image.metadata_remove(key);
+ if (r == -ENOENT) {
+ std::cerr << "rbd: no existing metadata key " << key << " of image : "
+ << cpp_strerror(r) << std::endl;
+ } else if(r < 0) {
+ std::cerr << "failed to remove metadata " << key << " of image : "
+ << cpp_strerror(r) << std::endl;
+ }
+ return r;
+}
+
+static int do_metadata_get(librbd::Image& image, const char *key)
+{
+ std::string s;
+ int r = image.metadata_get(key, &s);
+ if (r < 0) {
+ std::cerr << "failed to get metadata " << key << " of image : "
+ << cpp_strerror(r) << std::endl;
+ return r;
+ }
+ std::cout << s << std::endl;
+ return r;
+}
+
+void get_list_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_list(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, "", "", false,
+ &rados, &io_ctx, &image);
+ if (r < 0) {
+ return r;
+ }
+
+ r = do_metadata_list(image, formatter.get());
+ if (r < 0) {
+ std::cerr << "rbd: listing metadata failed: " << cpp_strerror(r)
+ << std::endl;
+ return r;
+ }
+ return 0;
+}
+
+void get_get_arguments(po::options_description *positional,
+ po::options_description *options) {
+ at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE);
+ add_key_option(positional);
+}
+
+int execute_get(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;
+ }
+
+ std::string key;
+ r = get_key(vm, &key);
+ 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, "", "", false,
+ &rados, &io_ctx, &image);
+ if (r < 0) {
+ return r;
+ }
+
+ r = do_metadata_get(image, key.c_str());
+ if (r < 0) {
+ std::cerr << "rbd: getting metadata failed: " << cpp_strerror(r)
+ << std::endl;
+ return r;
+ }
+ return 0;
+}
+
+void get_set_arguments(po::options_description *positional,
+ po::options_description *options) {
+ at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE);
+ add_key_option(positional);
+ positional->add_options()
+ ("value", "image meta value");
+}
+
+int execute_set(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;
+ }
+
+ std::string key;
+ r = get_key(vm, &key);
+ if (r < 0) {
+ return r;
+ }
+
+ std::string value = utils::get_positional_argument(vm, 2);
+ if (value.empty()) {
+ std::cerr << "rbd: metadata value was not specified" << std::endl;
+ return -EINVAL;
+ }
+
+ librados::Rados rados;
+ librados::IoCtx io_ctx;
+ librbd::Image image;
+ r = utils::init_and_open_image(pool_name, image_name, "", "", false,
+ &rados, &io_ctx, &image);
+ if (r < 0) {
+ return r;
+ }
+
+ r = do_metadata_set(image, key.c_str(), value.c_str());
+ if (r < 0) {
+ std::cerr << "rbd: setting metadata failed: " << cpp_strerror(r)
+ << std::endl;
+ return r;
+ }
+ return 0;
+}
+
+void get_remove_arguments(po::options_description *positional,
+ po::options_description *options) {
+ at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE);
+ add_key_option(positional);
+}
+
+int execute_remove(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;
+ }
+
+ std::string key;
+ r = get_key(vm, &key);
+ 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, "", "", false,
+ &rados, &io_ctx, &image);
+ if (r < 0) {
+ return r;
+ }
+
+ r = do_metadata_remove(image, key.c_str());
+ if (r < 0) {
+ std::cerr << "rbd: removing metadata failed: " << cpp_strerror(r)
+ << std::endl;
+ return r;
+ }
+ return 0;
+}
+
+Shell::Action action_list(
+ {"image-meta", "list"}, {}, "Image metadata list keys with values.", "",
+ &get_list_arguments, &execute_list);
+Shell::Action action_get(
+ {"image-meta", "get"}, {},
+ "Image metadata get the value associated with the key.", "",
+ &get_get_arguments, &execute_get);
+Shell::Action action_set(
+ {"image-meta", "set"}, {}, "Image metadata set key with value.", "",
+ &get_set_arguments, &execute_set);
+Shell::Action action_remove(
+ {"image-meta", "remove"}, {},
+ "Image metadata remove the key and value associated.", "",
+ &get_remove_arguments, &execute_remove);
+
+} // namespace image_meta
+} // namespace action
+} // namespace rbd
Code Review / stor4nfv.git / blobdiff