erlang 中定时执行应用 ecron 使用

• 获取：

   dev@debian:~/Work/ShankYan$ git clone git://github.com/esl/ecron.git

• 编译：

dev@debian:~/Work/ShankYan/ecron$ rebar com
==> ecron (compile)
Dependency not available: meck-.* ({git,"git://github.com/esl/meck.git",
                                       "HEAD"})
Dependency not available: edown-.* ({git,"git://github.com/esl/edown.git",
                                     "HEAD"})
ERROR: compile failed while processing /home/dev/Work/ShankYan/ecron: rebar_abort

解决(rebar get-deps com )或者在ecron下创建deps文件夹，然后进入deps文件夹，

 git clone git://github.com/esl/meck.git
  git clone git://github.com/esl/edown.git
 dev@debian:~/Work/ShankYan/ecron$ rebar com
 ok

• 测试代码：

在ecron.app文件中修改为

  {env, [
         {scheduled, [
                       {{{ '*', '*', '*'}, {14, 50, 0}}, {mytest, test, [2, 4]}},
                       {{{ '*', '*', '*'}, {14, 49, 0}}, {mytest, test, [2, 4]}},
                       {{{ '*', '*', '*'}, {14, 48, 0}}, {mytest, test, [2, 4]}},
                       {{{ '*', '*', '*'}, {14, 47, 0}}, {mytest, test, [2, 4]}},
                       {{{ '*', '*', '*'}, {14, 46, 0}}, {mytest, test, [2, 4]}},
                       {{{ '*', '*', '*'}, {14, 45, 0}}, {mytest, test, [2, 4]}},
                       {{{ '*', '*', '*'}, {14, 44, 0}}, {settlement_ecron, apply,  []}}
                       %{{{ '*', '*', '*'}, {16, 20, 0}}, {settlement_ecron, sys_init,   []}} 
                       % {{{ '*', '*', '*'}, {15, 40, 0}}, {settlement_ecron, migrate,  []}}
                       % {{{ '*', '*', '*'}, {15, 40, 0}}, {settlement_ecron, finalize,  []}}
                      ]},
         {event_handlers,[{ecron_event, []}]}]}

在src中添加

-module(mytest).
-export([test/2]).
test(X, Y)        ->
    io:format("I'm come for ecron test...~n"),
    {ok, X+Y}.
<

并重新编译

• 运行 当然

%% >mnesia:create_schema([node()]).
%% >mnesia:start().
%% >ecron:install().
是上面说的用法
handle收到消息的操作就是直接输出，结果如下所示：
   dev@debian:~/Work/ShankYan/ecron$ erl -pa ./ebin -name d@example4.com
   Erlang R16B03-1 (erts-5.10.4) [source] [64-bit] [smp:2:2] [async-threads:10] [kernel-poll:false]
   Eshell V5.10.4  (abort with ^G)
   (d@example4.com)1> mnesia:start().
   ok
   (d@example4.com)2> ecron:install().
   ok
   (d@example4.com)3> application:start(ecron).
   ok
   (d@example4.com)4> I'm come for ecron test...
   ***Executed {{{' *','*','*'},{14,49,0}},{mytest,test,[2,4]}} at {{2014,9,3},{14,49,0}} expected at {{2014,9,3},{14,49,0}} Result = {ok, 6}
   (d@example4.com)4> I'm come for ecron test...
   ***Executed {{{'*','*','*'},{14,50,0}},{mytest,test,[2,4]}} at {{2014,9,3},{14,50,0}} expected at {{2014,9,3},{14,50,0}} Result = {ok, 6}
   (d@example4.com)4> 
   (d@example4.com)4> 

• 最后

   
***Executed {{{'*','*','*'},{15,11,0}},{mytest,test,[2,4]}} at {{2014,9,3},{15,11,0}}
 expected at {{2014,9,3},{15,11,0}} Result = {ok, 6}