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diff --git a/lib/os_mon/src/os_mon_mib.erl b/lib/os_mon/src/os_mon_mib.erl
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-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%% http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%
-%% %CopyrightEnd%
-%%
--module(os_mon_mib).
-%%%-----------------------------------------------------------------
-%%% Description: This module implements the OS-MON-MIB.
-%%% The tables are implemented as shadow tables with the module
-%%% snmp_shadow_table. Here the update functions are implemented.
-%%%-----------------------------------------------------------------
-
--include("../../otp_mibs/include/OTP-MIB.hrl").
-
-%% API
--export([load/1, unload/1]).
-
-%% Deprecated API
--export([init/1, stop/1]).
-
--deprecated([{init,1,eventually},
- {stop,1,eventually}]).
-
-%% SNMP instrumentation
--export([load_table/1, load_table/3, disk_table/1, disk_table/3,
- mem_sys_mark/1, mem_proc_mark/1, disk_threshold/1]).
-
-%% SNMP shadow functions
--export([update_load_table/0, update_disk_table/0]).
-
-%% Exported for internal use via rpc
--export([get_load/1, get_disks/1]).
-
-%% Shadow tables
--record(loadTable, {
- loadErlNodeName,
- loadSystemTotalMemory,
- loadSystemUsedMemory,
- loadLargestErlProcess,
- loadLargestErlProcessUsedMemory,
- loadCpuLoad,
- loadCpuLoad5,
- loadCpuLoad15,
- loadOsWordsize,
- loadSystemTotalMemory64,
- loadSystemUsedMemory64,
- loadLargestErlProcessUsedMemory64}).
-
--record(diskTable,
- {key, diskDescr, diskKBytes, diskCapacity}).
-
-%% Shadow argument macros
--define(loadShadowArgs,
- {loadTable, string, record_info(fields, loadTable), 5000,
- fun os_mon_mib:update_load_table/0}).
-
--define(diskShadowArgs,
- {diskTable, {integer, integer}, record_info(fields, diskTable), 5000,
- fun os_mon_mib:update_disk_table/0}).
-
-%% Misc
--record(diskAlloc, {diskDescr, diskId}).
-
-%%%=========================================================================
-%%% API
-%%%=========================================================================
-
-%%-------------------------------------------------------------------------
-%% load(Agent) -> ok | {error, Reason}
-%% Agent - pid() | atom()
-%% Reason - term()
-%% Description: Loads the OTP-OS-MON-MIB
-%%-------------------------------------------------------------------------
-load(Agent) ->
- MibDir = filename:join(code:priv_dir(os_mon), "mibs"),
- snmpa:load_mibs(Agent, [filename:join(MibDir, "OTP-OS-MON-MIB")]).
-
-%%-------------------------------------------------------------------------
-%% unload(Agent) -> ok | {error, Reason}
-%% Agent - pid() | atom()
-%% Reason - term()
-%% Description: Unloads the OTP-OS-MON-MIB
-%%-------------------------------------------------------------------------
-unload(Agent) ->
- snmpa:unload_mibs(Agent, ["OTP-OS-MON-MIB"]).
-
-%% To be backwards compatible
-init(Agent) ->
- load(Agent).
-stop(Agent) ->
- unload(Agent).
-
-%%%=========================================================================
-%%% SNMP instrumentation
-%%%=========================================================================
-load_table(Op) ->
- snmp_shadow_table:table_func(Op, ?loadShadowArgs).
-load_table(Op, RowIndex, Cols) ->
- snmp_shadow_table:table_func(Op, RowIndex, Cols, ?loadShadowArgs).
-
-disk_table(new) ->
- Tab = diskAlloc,
- Storage = ram_copies,
- case lists:member(Tab, mnesia:system_info(tables)) of
- true ->
- case mnesia:table_info(Tab, storage_type) of
- unknown ->
- {atomic, ok}=mnesia:add_table_copy(Tab, node(), Storage);
- Storage ->
- catch delete_all(Tab)
- end;
- false ->
- Nodes = [node()],
- Props = [{type, set},
- {attributes, record_info(fields, diskAlloc)},
- {local_content, true},
- {Storage, Nodes}],
- {atomic, ok} = mnesia:create_table(Tab, Props)
-
- end,
- Rec = #diskAlloc{diskDescr = next_index, diskId = 1},
- ok = mnesia:dirty_write(Rec),
- snmp_shadow_table:table_func(new, ?diskShadowArgs).
-
-disk_table(Op, RowIndex, Cols) ->
- snmp_shadow_table:table_func(Op, RowIndex, Cols, ?diskShadowArgs).
-
-mem_sys_mark(get) ->
- {value, memsup:get_sysmem_high_watermark()};
-mem_sys_mark(_) ->
- ok.
-
-mem_proc_mark(get) ->
- {value, memsup:get_procmem_high_watermark()};
-mem_proc_mark(_) ->
- ok.
-
-disk_threshold(get) ->
- {value, disksup:get_almost_full_threshold()};
-disk_threshold(_) ->
- ok.
-
-%%%=========================================================================
-%%% SNMP shadow functions
-%%%=========================================================================
-update_load_table() ->
- delete_all(loadTable),
- lists:foreach(
- fun(Node) ->
- case rpc:call(Node, os_mon_mib, get_load, [Node]) of
- Load when is_record(Load,loadTable) ->
- ok = mnesia:dirty_write(Load);
- _Else ->
- ok
- end
- end, [node() | nodes()]).
-
-
-update_disk_table() ->
- delete_all(diskTable),
- node_update_disk_table(
- otp_mib:erl_node_table(get_next, [], [?erlNodeName,?erlNodeOutBytes])).
-
-%%%========================================================================
-%%% Exported for internal use via rpc
-%%%========================================================================
-get_load(Node) ->
- {Total, Allocated, PidString, PidAllocated} = case memsup:get_memory_data() of
- {MemTot, MemAlloc, undefined} -> {MemTot, MemAlloc, "undefined", 0};
- {MemTot, MemAlloc, {Pid, PidMem}} -> {MemTot, MemAlloc, pid_to_str(Pid), PidMem}
- end,
- OsWordsize = case memsup:get_os_wordsize() of
- WS when is_integer(WS) -> WS;
- _ -> 0
- end,
- #loadTable{
- loadErlNodeName = atom_to_list(Node),
- loadSystemTotalMemory = mask_int32(Total),
- loadSystemUsedMemory = mask_int32(Allocated),
- loadLargestErlProcess = PidString,
- loadLargestErlProcessUsedMemory = mask_int32(PidAllocated),
- loadCpuLoad = get_cpu_load(avg1),
- loadCpuLoad5 = get_cpu_load(avg5),
- loadCpuLoad15 = get_cpu_load(avg15),
- loadOsWordsize = OsWordsize,
- loadSystemTotalMemory64 = Total,
- loadSystemUsedMemory64 = Allocated,
- loadLargestErlProcessUsedMemory64 = PidAllocated
- }.
-
-mask_int32(Value) -> Value band ((1 bsl 32) - 1).
-
-get_disks(NodeId) ->
- element(1,
- lists:mapfoldl(
- fun({Descr, KByte, Capacity}, DiskId) ->
- {#diskTable{key = {NodeId, DiskId},
- diskDescr = Descr,
- diskKBytes = KByte,
- diskCapacity = Capacity},
- DiskId + 1}
- end, 1, disksup:get_disk_data())).
-
-
-%%%========================================================================
-%%% Internal functions
-%%%========================================================================
-node_update_disk_table([_, endOfTable]) ->
- ok;
-
-node_update_disk_table([{[?erlNodeName | IndexList], NodeStr}, _]) ->
- Disks = rpc:call(list_to_atom(NodeStr), os_mon_mib, get_disks,
- IndexList),
- lists:foreach(fun(Disk) ->
- mnesia:dirty_write(Disk)
- end, Disks),
- node_update_disk_table(otp_mib:erl_node_table(get_next,
- IndexList,
- [?erlNodeName,
- ?erlNodeOutBytes])).
-
-get_cpu_load(X) when X == avg1; X == avg5; X == avg15 ->
- case erlang:round(apply(cpu_sup, X, [])/2.56) of
- Large when Large > 100 ->
- 100;
- Load ->
- Load
- end.
-
-delete_all(Name) -> delete_all(mnesia:dirty_first(Name), Name).
-delete_all('$end_of_table', _Name) -> done;
-delete_all(Key, Name) ->
- Next = mnesia:dirty_next(Name, Key),
- ok = mnesia:dirty_delete({Name, Key}),
- delete_all(Next, Name).
-
-pid_to_str(Pid) -> lists:flatten(io_lib:format("~w", [Pid])).
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 07:23:19 +0000