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Ping Riak nodes
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-module(pinger). | |
-export([ping/1, | |
ping/3, | |
pinglist/4, | |
pingall/0, | |
pingall/1, | |
pingall/2 | |
]). | |
ping(Node) -> | |
Start = now(), | |
Response = net_adm:ping(Node), | |
End = now(), | |
Elapsed = timer:now_diff(End, Start), | |
io:format("Ping ~p responded ~p in ~b usec~n", [Node, Response, Elapsed]), | |
{Response, Elapsed}. | |
ping(PPid, Node, {Good0, Bad0, Min0, Max0, Average0, Count}) -> | |
{Good, Bad, Min, Max, Average} = case ping(Node) of | |
{pong, Elapsed} -> | |
{Good0 + 1, Bad0, min(Min0, Elapsed), max(Max0, Elapsed), (Average0 * Count + Elapsed)/(Count + 1)}; | |
_ -> | |
{Good0, Bad0 + 1, Min0, Max0, Average0} | |
end, | |
Rslt = {Good, Bad, Min, Max, Average, Count + 1}, | |
PPid ! {self(), Node, Rslt}. | |
node_stats(Node, Stats) -> | |
case dict:is_key(Node, Stats) of | |
false -> | |
{0, 0, none, 0, 0.0, 0}; | |
true -> | |
dict:fetch(Node, Stats) | |
end. | |
receive_results([], Stats) -> | |
Stats; | |
receive_results([Pid|T], Stats0) -> | |
Stats1 = receive | |
{Pid, Node, Rslt} -> dict:store(Node, Rslt, Stats0) | |
end, | |
receive_results(T, Stats1). | |
pinglist(_Nodes, _Delay, Stats, 0) -> Stats; | |
pinglist(Nodes, Delay, Stats, Count) -> | |
Pids = [spawn(pinger, ping, [self(), Node, node_stats(Node, Stats)]) || Node <- Nodes], | |
Stats1 = receive_results(Pids, Stats), | |
timer:sleep(Delay), | |
pinglist(Nodes, Delay, Stats1, Count - 1). | |
pingall() -> | |
pingall(1). | |
pingall(Count) -> | |
pingall(1000, Count). | |
pingall(Delay, Count) when is_integer(Delay), is_integer(Count), Count > 0 -> | |
{ok,Ring} = riak_core_ring_manager:get_my_ring(), | |
Members = riak_core_ring:all_members(Ring), | |
Stats = pinglist(Members, Delay, dict:new(), Count), | |
FinalStats = dict:to_list(Stats), | |
[io:format("~p: ~b pong, ~b fail, ~p/~b/~f min/max/average usec, ~b pings sent~n", [Node, Good, Bad, Min, Max, Ave, Cnt]) || {Node, {Good, Bad, Min, Max, Ave, Cnt}} <- FinalStats]. |
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