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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include <array>
#include "cephfs_features.h"
#include "mdstypes.h"
static const std::array feature_names
{
"reserved",
"reserved",
"reserved",
"reserved",
"reserved",
"jewel",
"kraken",
"luminous",
"mimic",
"reply_encoding",
"reclaim_client",
"lazy_caps_wanted",
"multi_reconnect",
"deleg_ino",
"metric_collect",
"alternate_name",
"notify_session_state",
"op_getvxattr",
};
static_assert(feature_names.size() == CEPHFS_FEATURE_MAX + 1);
std::string_view cephfs_feature_name(size_t id)
{
if (id > feature_names.size())
return "unknown"sv;
return feature_names[id];
}
int cephfs_feature_from_name(std::string_view name)
{
if (name == "reserved"sv) {
return -1;
}
for (size_t i = 0; i < feature_names.size(); ++i) {
if (name == feature_names[i])
return i;
}
return -1;
}
std::string cephfs_stringify_features(const feature_bitset_t& features)
{
CachedStackStringStream css;
bool first = true;
*css << "{";
for (size_t i = 0; i < feature_names.size(); ++i) {
if (!features.test(i))
continue;
if (!first)
*css << ",";
*css << i << "=" << cephfs_feature_name(i);
first = false;
}
*css << "}";
return css->str();
}
void cephfs_dump_features(ceph::Formatter *f, const feature_bitset_t& features)
{
for (size_t i = 0; i < feature_names.size(); ++i) {
if (!features.test(i))
continue;
char s[18];
snprintf(s, sizeof(s), "feature_%lu", i);
f->dump_string(s, cephfs_feature_name(i));
}
}
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