/*
* Gets statistics from lowlevel backend and writes it to "backend" section
*/
static void fill_backend_backend(rapidjson::Value &stat_value,
rapidjson::Document::AllocatorType &allocator,
const struct dnet_backend_io *backend,
const dnet_backend_info *config_backend) {
char *json_stat = NULL;
size_t size = 0;
struct dnet_backend_callbacks *cb = backend->cb;
if (cb->storage_stat_json) {
cb->storage_stat_json(cb->command_private, &json_stat, &size);
if (json_stat && size) {
rapidjson::Document backend_value(&allocator);
backend_value.Parse<0>(json_stat);
auto &config_value = backend_value["config"];
config_value.AddMember("group", config_backend->group, allocator);
config_value.AddMember("queue_timeout", config_backend->queue_timeout, allocator);
rapidjson::Document initial_config(&allocator);
initial_config.Parse<0>(config_backend->initial_config.c_str());
backend_value.AddMember("initial_config",
static_cast<rapidjson::Value&>(initial_config),
allocator);
stat_value.AddMember("backend",
static_cast<rapidjson::Value&>(backend_value),
allocator);
}
}
free(json_stat);
}
/*
* Fills config with common backend info like config, group id
*/
static void fill_disabled_backend_config(rapidjson::Value &stat_value,
rapidjson::Document::AllocatorType &allocator,
const dnet_backend_info &config_backend) {
rapidjson::Value backend_value(rapidjson::kObjectType);
rapidjson::Value config_value(rapidjson::kObjectType);
for (auto it = config_backend.options.begin(); it != config_backend.options.end(); ++it) {
const dnet_backend_config_entry &entry = *it;
rapidjson::Value tmp_val(entry.value_template.data(), allocator);
config_value.AddMember(entry.entry->key, tmp_val, allocator);
}
backend_value.AddMember("config", config_value, allocator);
stat_value.AddMember("backend", backend_value, allocator);
}
/*
* This function is called to fill in config values read from the config for non-enabled (yet) backends.
*
* If config template provides API for serializing parsed config values to json
* it fills 'backend::config' section otherwise it uses unparsed values from original config
* and fills 'backend::config_template'.
*
* After backend has been enabled, @fill_backend_backend() is called instead.
*/
static void fill_disabled_backend_config(rapidjson::Value &stat_value,
rapidjson::Document::AllocatorType &allocator,
const dnet_backend_info *config_backend) {
rapidjson::Value backend_value(rapidjson::kObjectType);
/* If config template provides API for serializing parsed config values to json - use it */
if (config_backend->config_template.to_json) {
char *json_stat = NULL;
size_t size = 0;
dnet_config_backend config = config_backend->config_template;
std::vector<char> data(config.size, '\0');
config.data = data.data();
config.log = config_backend->log.get();
for (auto it = config_backend->options.begin(); it != config_backend->options.end(); ++it) {
const dnet_backend_config_entry &entry = *it;
entry.entry->callback(&config, entry.entry->key, entry.value_template.data());
}
config.to_json(&config, &json_stat, &size);
if (json_stat && size) {
rapidjson::Document config_value(&allocator);
config_value.Parse<0>(json_stat);
config_value.AddMember("group", config_backend->group, allocator);
backend_value.AddMember("config",
static_cast<rapidjson::Value&>(config_value),
allocator);
}
free(json_stat);
config.cleanup(&config);
} else {
rapidjson::Value config_value(rapidjson::kObjectType);
for (auto it = config_backend->options.begin(); it != config_backend->options.end(); ++it) {
const dnet_backend_config_entry &entry = *it;
rapidjson::Value tmp_val(entry.value_template.data(), allocator);
config_value.AddMember(entry.entry->key, tmp_val, allocator);
}
config_value.AddMember("group", config_backend->group, allocator);
backend_value.AddMember("config_template", config_value, allocator);
}
stat_value.AddMember("backend", backend_value, allocator);
}
/*
* Gets statistics from lowlevel backend and writes it to "backend" section
*/
static void fill_backend_backend(rapidjson::Value &stat_value,
rapidjson::Document::AllocatorType &allocator,
const struct dnet_backend_io &backend) {
char *json_stat = NULL;
size_t size = 0;
struct dnet_backend_callbacks *cb = backend.cb;
if (cb->storage_stat_json) {
cb->storage_stat_json(cb->command_private, &json_stat, &size);
if (json_stat && size) {
rapidjson::Document backend_value(&allocator);
backend_value.Parse<0>(json_stat);
stat_value.AddMember("backend",
static_cast<rapidjson::Value&>(backend_value),
allocator);
}
}
free(json_stat);
}