Send per-process metrics to StatsD
[beam_stats.git] / src / beam_stats_consumer_statsd.erl
index c434429..8b0b437 100644 (file)
@@ -1,6 +1,10 @@
 -module(beam_stats_consumer_statsd).
 
 -include("include/beam_stats.hrl").
+-include("include/beam_stats_ets_table.hrl").
+-include("include/beam_stats_process.hrl").
+-include("include/beam_stats_process_ancestry.hrl").
+-include("include/beam_stats_processes.hrl").
 -include("beam_stats_logging.hrl").
 
 -behaviour(beam_stats_consumer).
@@ -21,6 +25,7 @@
     | {dst_host             , inet:ip_address() | inet:hostname()}
     | {dst_port             , inet:port_number()}
     | {src_port             , inet:port_number()}
+    | {num_msgs_per_packet  , non_neg_integer()}
     .
 
 -define(DEFAULT_DST_HOST, "localhost").
@@ -45,6 +50,7 @@
     , dst_host :: inet:ip_address() | inet:hostname()
     , dst_port :: inet:port_number()
     , src_port :: inet:port_number()
+    , num_msgs_per_packet :: non_neg_integer()
     }).
 
 -type state() ::
@@ -63,20 +69,21 @@ init(Options) ->
     DstHost = hope_kv_list:get(Options, dst_host, ?DEFAULT_DST_HOST),
     DstPort = hope_kv_list:get(Options, dst_port, ?DEFAULT_DST_PORT),
     SrcPort = hope_kv_list:get(Options, src_port, ?DEFAULT_SRC_PORT),
+    NumMsgsPerPacket = hope_kv_list:get(Options, num_msgs_per_packet, 10),
     State = #state
         { sock     = none
         , dst_host = DstHost
         , dst_port = DstPort
         , src_port = SrcPort
+        , num_msgs_per_packet = NumMsgsPerPacket
         },
     {ConsumptionInterval, State}.
 
 -spec consume(beam_stats_consumer:queue(), state()) ->
     state().
-consume(Q, #state{}=State1) ->
-    Payload = beam_stats_queue_to_binary(Q),
-    State2 = try_to_connect_if_no_socket(State1),
-    try_to_send(State2, Payload).
+consume(Q, #state{num_msgs_per_packet=NumMsgsPerPacket}=State) ->
+    Packets = beam_stats_queue_to_packets(Q, NumMsgsPerPacket),
+    lists:foldl(fun try_to_connect_and_send/2, State, Packets).
 
 -spec terminate(state()) ->
     {}.
@@ -88,6 +95,12 @@ terminate(#state{sock=SockOpt}) ->
 %% Transport
 %% ============================================================================
 
+-spec try_to_connect_and_send(binary(), state()) ->
+    state().
+try_to_connect_and_send(<<Payload/binary>>, #state{}=State1) ->
+    State2 = try_to_connect_if_no_socket(State1),
+    try_to_send(State2, Payload).
+
 -spec try_to_send(state(), binary()) ->
     state().
 try_to_send(#state{sock=none}=State, _) ->
@@ -132,10 +145,12 @@ try_to_connect_if_no_socket(#state{sock=none, src_port=SrcPort}=State) ->
 %% Serialization
 %% ============================================================================
 
--spec beam_stats_queue_to_binary(beam_stats_consumer:queue()) ->
-    binary().
-beam_stats_queue_to_binary(Q) ->
-    iolist_to_binary([beam_stats_to_bins(B) || B <- queue:to_list(Q)]).
+-spec beam_stats_queue_to_packets(beam_stats_consumer:queue(), non_neg_integer()) ->
+    [binary()].
+beam_stats_queue_to_packets(Q, NumMsgsPerPacket) ->
+    MsgBins = lists:append([beam_stats_to_bins(B) || B <- queue:to_list(Q)]),
+    MsgBinsChucks = hope_list:divide(MsgBins, NumMsgsPerPacket),
+    lists:map(fun erlang:iolist_to_binary/1, MsgBinsChucks).
 
 -spec beam_stats_to_bins(beam_stats:t()) ->
     [binary()].
@@ -146,6 +161,9 @@ beam_stats_to_bins(#beam_stats
     , io_bytes_out = IOBytesOut
     , context_switches = ContextSwitches
     , reductions       = Reductions
+    , run_queue        = RunQueue
+    , ets              = ETS
+    , processes        = Processes
     }
 ) ->
     NodeIDBin = node_id_to_bin(NodeID),
@@ -154,11 +172,23 @@ beam_stats_to_bins(#beam_stats
         , io_bytes_out_to_msg(IOBytesOut)
         , context_switches_to_msg(ContextSwitches)
         , reductions_to_msg(Reductions)
+        , run_queue_to_msg(RunQueue)
         | memory_to_msgs(Memory)
-        ],
+        ]
+        ++ ets_to_msgs(ETS)
+        ++ procs_to_msgs(Processes),
     Msgs2 = [statsd_msg_add_name_prefix(M, NodeIDBin) || M <- Msgs1],
     [statsd_msg_to_bin(M) || M <- Msgs2].
 
+-spec run_queue_to_msg(non_neg_integer()) ->
+    statsd_msg().
+run_queue_to_msg(RunQueue) ->
+    #statsd_msg
+    { name  = <<"run_queue">>
+    , value = RunQueue
+    , type  = gauge
+    }.
+
 -spec reductions_to_msg(non_neg_integer()) ->
     statsd_msg().
 reductions_to_msg(Reductions) ->
@@ -195,6 +225,147 @@ io_bytes_out_to_msg(IOBytesOut) ->
     , type  = gauge
     }.
 
+-spec procs_to_msgs(beam_stats_processes:t()) ->
+    [statsd_msg()].
+procs_to_msgs(
+    #beam_stats_processes
+    { individual_stats         = Procs
+    , count_all                = CountAll
+    , count_exiting            = CountExiting
+    , count_garbage_collecting = CountGarbageCollecting
+    , count_registered         = CountRegistered
+    , count_runnable           = CountRunnable
+    , count_running            = CountRunning
+    , count_suspended          = CountSuspended
+    , count_waiting            = CountWaiting
+    }
+) ->
+    [ gauge(<<"processes_count_all">>               , CountAll)
+    , gauge(<<"processes_count_exiting">>           , CountExiting)
+    , gauge(<<"processes_count_garbage_collecting">>, CountGarbageCollecting)
+    , gauge(<<"processes_count_registered">>        , CountRegistered)
+    , gauge(<<"processes_count_runnable">>          , CountRunnable)
+    , gauge(<<"processes_count_running">>           , CountRunning)
+    , gauge(<<"processes_count_suspended">>         , CountSuspended)
+    , gauge(<<"processes_count_waiting">>           , CountWaiting)
+    | lists:append([proc_to_msgs(P) || P <- Procs])
+    ].
+
+-spec proc_to_msgs(beam_stats_process:t()) ->
+    [statsd_msg()].
+proc_to_msgs(
+    #beam_stats_process
+    { pid               = Pid
+    , memory            = Memory
+    , total_heap_size   = TotalHeapSize
+    , stack_size        = StackSize
+    , message_queue_len = MsgQueueLen
+    }=Process
+) ->
+    Origin = beam_stats_process:get_best_known_origin(Process),
+    OriginBin = proc_origin_to_bin(Origin),
+    PidBin = pid_to_bin(Pid),
+    OriginDotPid = <<OriginBin/binary, ".", PidBin/binary>>,
+    [ gauge(<<"process_memory."            , OriginDotPid/binary>>, Memory)
+    , gauge(<<"process_total_heap_size."   , OriginDotPid/binary>>, TotalHeapSize)
+    , gauge(<<"process_stack_size."        , OriginDotPid/binary>>, StackSize)
+    , gauge(<<"process_message_queue_len." , OriginDotPid/binary>>, MsgQueueLen)
+    ].
+
+-spec proc_origin_to_bin(beam_stats_process:best_known_origin()) ->
+    binary().
+proc_origin_to_bin({registered_name, Name}) ->
+    atom_to_binary(Name, utf8);
+proc_origin_to_bin({ancestry, Ancestry}) ->
+    #beam_stats_process_ancestry
+    { raw_initial_call  = InitCallRaw
+    , otp_initial_call  = InitCallOTPOpt
+    , otp_ancestors     = AncestorsOpt
+    } = Ancestry,
+    Blank             = <<"NONE">>,
+    InitCallOTPBinOpt = hope_option:map(InitCallOTPOpt   , fun mfa_to_bin/1),
+    InitCallOTPBin    = hope_option:get(InitCallOTPBinOpt, Blank),
+    AncestorsBinOpt   = hope_option:map(AncestorsOpt     , fun ancestors_to_bin/1),
+    AncestorsBin      = hope_option:get(AncestorsBinOpt  , Blank),
+    InitCallRawBin    = mfa_to_bin(InitCallRaw),
+    << InitCallRawBin/binary
+     , "--"
+     , InitCallOTPBin/binary
+     , "--"
+     , AncestorsBin/binary
+    >>.
+
+ancestors_to_bin([]) ->
+    <<>>;
+ancestors_to_bin([A | Ancestors]) ->
+    ABin = ancestor_to_bin(A),
+    case ancestors_to_bin(Ancestors)
+    of  <<>> ->
+            ABin
+    ;   <<AncestorsBin/binary>> ->
+            <<ABin/binary, "-", AncestorsBin/binary>>
+    end.
+
+ancestor_to_bin(A) when is_atom(A) ->
+    atom_to_binary(A, utf8);
+ancestor_to_bin(A) when is_pid(A) ->
+    pid_to_bin(A).
+
+pid_to_bin(Pid) ->
+    PidList = erlang:pid_to_list(Pid),
+    PidBin = re:replace(PidList, "[\.]", "_", [global, {return, binary}]),
+             re:replace(PidBin , "[><]", "" , [global, {return, binary}]).
+
+-spec mfa_to_bin(mfa()) ->
+    binary().
+mfa_to_bin({Module, Function, Arity}) ->
+    ModuleBin   = atom_to_binary(Module  , utf8),
+    FunctionBin = atom_to_binary(Function, utf8),
+    ArityBin    = erlang:integer_to_binary(Arity),
+    <<ModuleBin/binary, "-", FunctionBin/binary, "-", ArityBin/binary>>.
+
+
+-spec gauge(binary(), integer()) ->
+    statsd_msg().
+gauge(<<Name/binary>>, Value) when is_integer(Value) ->
+    #statsd_msg
+    { name  = Name
+    , value = Value
+    , type  = gauge
+    }.
+
+-spec ets_to_msgs(beam_stats_ets:t()) ->
+    [statsd_msg()].
+ets_to_msgs(PerTableStats) ->
+    NestedMsgs = lists:map(fun ets_table_to_msgs/1, PerTableStats),
+    lists:append(NestedMsgs).
+
+-spec ets_table_to_msgs(beam_stats_ets_table:t()) ->
+    [statsd_msg()].
+ets_table_to_msgs(#beam_stats_ets_table
+    { id     = ID
+    , name   = Name
+    , size   = Size
+    , memory = Memory
+    }
+) ->
+    IDBin   = beam_stats_ets_table:id_to_bin(ID),
+    NameBin = atom_to_binary(Name, latin1),
+    NameAndID = <<NameBin/binary, ".", IDBin/binary>>,
+    SizeMsg =
+        #statsd_msg
+        { name  = <<"ets_table.size.", NameAndID/binary>>
+        , value = Size
+        , type  = gauge
+        },
+    MemoryMsg =
+        #statsd_msg
+        { name  = <<"ets_table.memory.", NameAndID/binary>>
+        , value = Memory
+        , type  = gauge
+        },
+    [SizeMsg, MemoryMsg].
+
 -spec memory_to_msgs([{atom(), non_neg_integer()}]) ->
     [statsd_msg()].
 memory_to_msgs(Memory) ->
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