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ircd::stats: Add value; add operator/access suite.

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This commit is contained in:
Jason Volk 2019-04-18 17:56:09 -07:00
parent c427223340
commit 9907f7f477
2 changed files with 77 additions and 8 deletions
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78
include/ircd/stats.h
View file

@ -14,27 +14,97 @@
namespace ircd::stats
{
struct item;
using value_type = int128_t;
IRCD_EXCEPTION(ircd::error, error)
IRCD_EXCEPTION(error, not_found)
extern std::map<string_view, item *> items;
const value_type &get(const item &);
value_type &get(item &);
value_type &inc(item &, const value_type & = 1);
value_type &dec(item &, const value_type & = 1);
value_type &set(item &, const value_type & = 0);
}
struct ircd::stats::item
{
using callback = std::function<string_view (const mutable_buffer &)>;
static const size_t NAME_MAX_LEN;
json::strung feature_;
json::object feature;
string_view name;
callback cb;
value_type val;
public:
item(const json::members &, callback);
item &operator+=(const value_type &) &;
item &operator-=(const value_type &) &;
item &operator=(const value_type &) &;
item(const json::members &);
item(item &&) = delete;
item(const item &) = delete;
~item() noexcept;
};
inline ircd::stats::item &
ircd::stats::item::operator=(const value_type &v)
&
{
set(*this, v);
return *this;
}
inline ircd::stats::item &
ircd::stats::item::operator-=(const value_type &v)
&
{
dec(*this, v);
return *this;
}
inline ircd::stats::item &
ircd::stats::item::operator+=(const value_type &v)
&
{
inc(*this, v);
return *this;
}
inline ircd::stats::value_type &
ircd::stats::set(item &item,
const value_type &v)
{
item.val = v;
return get(item);
}
inline ircd::stats::value_type &
ircd::stats::dec(item &item,
const value_type &n)
{
item.val -= n;
return get(item);
}
inline ircd::stats::value_type &
ircd::stats::inc(item &item,
const value_type &n)
{
item.val += n;
return get(item);
}
inline ircd::stats::value_type &
ircd::stats::get(item &item)
{
return item.val;
}
inline const ircd::stats::value_type &
ircd::stats::get(const item &item)
{
return item.val;
}

7
ircd/stats.cc
View file

@ -22,8 +22,7 @@ ircd::stats::item::NAME_MAX_LEN
127
};
ircd::stats::item::item(const json::members &opts,
callback cb)
ircd::stats::item::item(const json::members &opts)
:feature_
{
opts
@ -36,9 +35,9 @@ ircd::stats::item::item(const json::members &opts,
{
unquote(feature.at("name"))
}
,cb
,val
{
std::move(cb)
0UL
}
{
if(name.size() > NAME_MAX_LEN)