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construct/modules/stats.cc

78 lines
1.5 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
namespace ircd::stats
{
static resource::response get_stats(client &, const resource::request &);
extern resource::method method_get;
extern resource stats_resource;
}
ircd::mapi::header
IRCD_MODULE
{
"Prometheus Metrics"
};
decltype(ircd::stats::stats_resource)
ircd::stats::stats_resource
{
"/stats",
{
"Prometheus Metrics"
}
};
decltype(ircd::stats::method_get)
ircd::stats::method_get
{
stats_resource, "GET", get_stats
};
ircd::resource::response
ircd::stats::get_stats(client &client,
const resource::request &request)
{
resource::response::chunked response
{
client, http::OK, "text/plain"
};
const time_t ts
{
ircd::time<milliseconds>()
};
for(const auto &[name_, item] : items)
{
char buf[256], name[2][128], val[64];
const string_view _name
{
replace(name[0], name_, '.', '_')
};
const string_view line
{
buf,
::snprintf
(
buf, sizeof(buf), "%s %s %lu\n",
data(strlcpy(name[1], _name)),
data(string(val, *item)),
ts
)
};
response.write(line);
}
return std::move(response);
}