%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2001-2009. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%
-module(webtool).
-behaviour(gen_server).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% %%
%% The general idea is: %%
%% %%
%% %%
%% 1. Scan through the path for *.tool files and find all the web %%
%% based tools. Query each tool for configuration data. %%
%% 2. Add Alias for Erlscript and html for each tool to %%
%% the webserver configuration data. %%
%% 3. Start the webserver. %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% API functions
-export([start/0, start/2, stop/0]).
%% Starting Webtool from a shell script
-export([script_start/0, script_start/1]).
%% Web api
-export([started_tools/2, toolbar/2, start_tools/2, stop_tools/2]).
%% API against other tools
-export([is_localhost/0]).
%% Debug export s
-export([get_tools1/1]).
-export([debug/1, stop_debug/0, debug_app/1]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
terminate/2, code_change/3]).
-include_lib("kernel/include/file.hrl").
-include_lib("stdlib/include/ms_transform.hrl").
-record(state,{priv_dir,app_data,supvis,web_data,started=[]}).
-define(MAX_NUMBER_OF_WEBTOOLS,256).
-define(DEFAULT_PORT,8888).% must be >1024 or the user must be root on unix
-define(DEFAULT_ADDR,{127,0,0,1}).
-define(WEBTOOL_ALIAS,{webtool,[{alias,{erl_alias,"/webtool",[webtool]}}]}).
-define(HEADER,"Pragma:no-cache\r\n Content-type: text/html\r\n\r\n").
-define(HTML_HEADER,"\r\n\r\nWebTool\r\n\r\n\r\n").
-define(HTML_HEADER_RELOAD,"\r\n\r\nWebTool
\r\n\r\n
\r\n").
-define(HTML_END,"").
-define(SEND_URL_TIMEOUT,5000).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% %%
%% For debugging only. %%
%% %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Start tracing with
%% debug(Functions).
%% Functions = local | global | FunctionList
%% FunctionList = [Function]
%% Function = {FunctionName,Arity} | FunctionName |
%% {Module, FunctionName, Arity} | {Module,FunctionName}
debug(F) ->
ttb:tracer(all,[{file,"webtool.trc"}]), % tracing all nodes
ttb:p(all,[call,timestamp]),
MS = [{'_',[],[{return_trace},{message,{caller}}]}],
tp(F,MS),
ttb:ctp(?MODULE,stop_debug), % don't want tracing of the stop_debug func
ok.
tp(local,MS) -> % all functions
ttb:tpl(?MODULE,MS);
tp(global,MS) -> % all exported functions
ttb:tp(?MODULE,MS);
tp([{M,F,A}|T],MS) -> % Other module
ttb:tpl(M,F,A,MS),
tp(T,MS);
tp([{M,F}|T],MS) when is_atom(F) -> % Other module
ttb:tpl(M,F,MS),
tp(T,MS);
tp([{F,A}|T],MS) -> % function/arity
ttb:tpl(?MODULE,F,A,MS),
tp(T,MS);
tp([F|T],MS) -> % function
ttb:tpl(?MODULE,F,MS),
tp(T,MS);
tp([],_MS) ->
ok.
stop_debug() ->
ttb:stop([format]).
debug_app(Mod) ->
ttb:tracer(all,[{file,"webtool_app.trc"},{handler,{fun out/4,true}}]),
ttb:p(all,[call,timestamp]),
MS = [{'_',[],[{return_trace},{message,{caller}}]}],
ttb:tp(Mod,MS),
ok.
out(_,{trace_ts,Pid,call,MFA={M,F,A},{W,_,_},TS},_,S)
when W==webtool;W==mod_esi->
io:format("~w: (~p)~ncall ~s~n", [TS,Pid,ffunc(MFA)]),
[{M,F,length(A)}|S];
out(_,{trace_ts,Pid,return_from,MFA,R,TS},_,[MFA|S]) ->
io:format("~w: (~p)~nreturned from ~s -> ~p~n", [TS,Pid,ffunc(MFA),R]),
S;
out(_,_,_,_) ->
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% %%
%% Functions called via script. %%
%% %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
script_start() ->
usage(),
halt().
script_start([App]) ->
DefaultBrowser =
case os:type() of
{win32,_} -> iexplore;
_ -> firefox
end,
script_start([App,DefaultBrowser]);
script_start([App,Browser]) ->
io:format("Starting webtool...\n"),
start(),
AvailableApps = get_applications(),
{OSType,_} = os:type(),
case lists:keysearch(App,1,AvailableApps) of
{value,{App,StartPage}} ->
io:format("Starting ~w...\n",[App]),
start_tools([],"app=" ++ atom_to_list(App)),
PortStr = integer_to_list(get_port()),
Url = case StartPage of
"/" ++ Page ->
"http://localhost:" ++ PortStr ++ "/" ++ Page;
_ ->
"http://localhost:" ++ PortStr ++ "/" ++ StartPage
end,
case Browser of
none ->
ok;
iexplore when OSType == win32->
io:format("Starting internet explorer...\n"),
{ok,R} = win32reg:open(""),
Key="\\local_machine\\SOFTWARE\\Microsoft\\IE Setup\\Setup",
win32reg:change_key(R,Key),
{ok,Val} = win32reg:value(R,"Path"),
IExplore=filename:join(win32reg:expand(Val),"iexplore.exe"),
os:cmd("\"" ++ IExplore ++ "\" " ++ Url);
_ when OSType == win32 ->
io:format("Starting ~w...\n",[Browser]),
os:cmd("\"" ++ atom_to_list(Browser) ++ "\" " ++ Url);
B when B==firefox; B==mozilla ->
io:format("Sending URL to ~w...",[Browser]),
BStr = atom_to_list(Browser),
SendCmd = BStr ++ " -raise -remote \'openUrl(" ++
Url ++ ")\'",
Port = open_port({spawn,SendCmd},[exit_status]),
receive
{Port,{exit_status,0}} ->
io:format("done\n"),
ok;
{Port,{exit_status,_Error}} ->
io:format(" not running, starting ~w...\n",
[Browser]),
os:cmd(BStr ++ " " ++ Url),
ok
after ?SEND_URL_TIMEOUT ->
io:format(" failed, starting ~w...\n",[Browser]),
erlang:port_close(Port),
os:cmd(BStr ++ " " ++ Url)
end;
_ ->
io:format("Starting ~w...\n",[Browser]),
os:cmd(atom_to_list(Browser) ++ " " ++ Url)
end,
ok;
false ->
stop(),
io:format("\n{error,{unknown_app,~p}}\n",[App]),
halt()
end.
usage() ->
io:format("Starting webtool...\n"),
start(),
Apps = lists:map(fun({A,_}) -> A end,get_applications()),
io:format(
"\nUsage: start_webtool application [ browser ]\n"
"\nAvailable applications are: ~p\n"
"Default browser is \'iexplore\' (Internet Explorer) on Windows "
"or else \'firefox\'\n",
[Apps]),
stop().
get_applications() ->
gen_server:call(web_tool,get_applications).
get_port() ->
gen_server:call(web_tool,get_port).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% %%
%% Api functions to the genserver. %%
%% %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%----------------------------------------------------------------------
%
%----------------------------------------------------------------------
start()->
start(standard_path,standard_data).
start(Path,standard_data)->
case get_standard_data() of
{error,Reason} ->
{error,Reason};
Data ->
start(Path,Data)
end;
start(standard_path,Data)->
Path=get_path(),
start(Path,Data);
start(Path,Port) when is_integer(Port)->
Data = get_standard_data(Port),
start(Path,Data);
start(Path,Data0)->
Data = Data0 ++ rest_of_standard_data(),
gen_server:start({local,web_tool},webtool,{Path,Data},[]).
stop()->
gen_server:call(web_tool,stoppit).
%----------------------------------------------------------------------
%Web Api functions called by the web
%----------------------------------------------------------------------
started_tools(Env,Input)->
gen_server:call(web_tool,{started_tools,Env,Input}).
toolbar(Env,Input)->
gen_server:call(web_tool,{toolbar,Env,Input}).
start_tools(Env,Input)->
gen_server:call(web_tool,{start_tools,Env,Input}).
stop_tools(Env,Input)->
gen_server:call(web_tool,{stop_tools,Env,Input}).
%----------------------------------------------------------------------
%Support API for other tools
%----------------------------------------------------------------------
is_localhost()->
gen_server:call(web_tool,is_localhost).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% %%
%%The gen_server callback functions that builds the webbpages %%
%% %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
handle_call(get_applications,_,State)->
MS = ets:fun2ms(fun({Tool,{web_data,{_,Start}}}) -> {Tool,Start} end),
Tools = ets:select(State#state.app_data,MS),
{reply,Tools,State};
handle_call(get_port,_,State)->
{value,{port,Port}}=lists:keysearch(port,1,State#state.web_data),
{reply,Port,State};
handle_call({started_tools,_Env,_Input},_,State)->
{reply,started_tools_page(State),State};
handle_call({toolbar,_Env,_Input},_,State)->
{reply,toolbar(),State};
handle_call({start_tools,Env,Input},_,State)->
{NewState,Page}=start_tools_page(Env,Input,State),
{reply,Page,NewState};
handle_call({stop_tools,Env,Input},_,State)->
{NewState,Page}=stop_tools_page(Env,Input,State),
{reply,Page,NewState};
handle_call(stoppit,_From,Data)->
{stop,normal,ok,Data};
handle_call(is_localhost,_From,Data)->
Result=case proplists:get_value(bind_address, Data#state.web_data) of
?DEFAULT_ADDR ->
true;
_IpNumber ->
false
end,
{reply,Result,Data}.
handle_info(_Message,State)->
{noreply,State}.
handle_cast(_Request,State)->
{noreply,State}.
code_change(_,State,_)->
{ok,State}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% The other functions needed by the gen_server behaviour
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%----------------------------------------------------------------------
% Start the gen_server
%----------------------------------------------------------------------
init({Path,Config})->
case filelib:is_dir(Path) of
true ->
{ok, Table} = get_tool_files_data(),
insert_app(?WEBTOOL_ALIAS, Table),
case webtool_sup:start_link() of
{ok, Pid} ->
case start_webserver(Table, Path, Config) of
{ok, _} ->
print_url(Config),
{ok,#state{priv_dir=Path,
app_data=Table,
supvis=Pid,
web_data=Config}};
{error, Error} ->
{stop, {error, Error}}
end;
Error ->
{stop,Error}
end;
false ->
{stop, {error, error_dir}}
end.
terminate(_Reason,Data)->
%%shut down the webbserver
shutdown_server(Data),
%%Shutdown the different tools that are started with application:start
shutdown_apps(Data),
%%Shutdown the supervisor and its children will die
shutdown_supervisor(Data),
ok.
print_url(ConfigData)->
Server=proplists:get_value(server_name,ConfigData,"undefined"),
Port=proplists:get_value(port,ConfigData,"undefined"),
{A,B,C,D}=proplists:get_value(bind_address,ConfigData,"undefined"),
io:format("WebTool is available at http://~s:~w/~n",[Server,Port]),
io:format("Or http://~w.~w.~w.~w:~w/~n",[A,B,C,D,Port]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% begin build the pages
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%----------------------------------------------------------------------
%The page that shows the started tools
%----------------------------------------------------------------------
started_tools_page(State)->
[?HEADER,?HTML_HEADER,started_tools(State),?HTML_END].
toolbar()->
[?HEADER,?HTML_HEADER,toolbar_page(),?HTML_END].
start_tools_page(_Env,Input,State)->
%%io:format("~n======= ~n ~p ~n============~n",[Input]),
case get_tools(Input) of
{tools,Tools}->
%%io:format("~n======= ~n ~p ~n============~n",[Tools]),
{ok,NewState}=handle_apps(Tools,State,start),
{NewState,[?HEADER,?HTML_HEADER_RELOAD,reload_started_apps(),
show_unstarted_apps(NewState),?HTML_END]};
_ ->
{State,[?HEADER,?HTML_HEADER,show_unstarted_apps(State),?HTML_END]}
end.
stop_tools_page(_Env,Input,State)->
case get_tools(Input) of
{tools,Tools}->
{ok,NewState}=handle_apps(Tools,State,stop),
{NewState,[?HEADER,?HTML_HEADER_RELOAD,reload_started_apps(),
show_started_apps(NewState),?HTML_END]};
_ ->
{State,[?HEADER,?HTML_HEADER,show_started_apps(State),?HTML_END]}
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Functions that start and config the webserver
%% 1. Collect the config data
%% 2. Start webserver
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%----------------------------------------------------------------------
% Start the webserver
%----------------------------------------------------------------------
start_webserver(Data,Path,Config)->
case get_conf_data(Data,Path,Config) of
{ok,Conf_data}->
%%io:format("Conf_data: ~p~n",[Conf_data]),
start_server(Conf_data);
{error,Error} ->
{error,{error_server_conf_file,Error}}
end.
start_server(Conf_data)->
case inets:start(httpd, Conf_data, stand_alone) of
{ok,Pid}->
{ok,Pid};
Error->
{error,{server_error,Error}}
end.
%----------------------------------------------------------------------
% Create config data for the webserver
%----------------------------------------------------------------------
get_conf_data(Data,Path,Config)->
Aliases=get_aliases(Data),
ServerRoot = filename:join([Path,"root"]),
MimeTypesFile = filename:join([ServerRoot,"conf","mime.types"]),
case httpd_conf:load_mime_types(MimeTypesFile) of
{ok,MimeTypes} ->
Config1 = Config ++ Aliases,
Config2 = [{server_root,ServerRoot},
{document_root,filename:join([Path,"root/doc"])},
{mime_types,MimeTypes} |
Config1],
{ok,Config2};
Error ->
Error
end.
%----------------------------------------------------------------------
% Control the path for *.tools files
%----------------------------------------------------------------------
get_tool_files_data()->
Tools=get_tools1(code:get_path()),
%%io:format("Data : ~p ~n",[Tools]),
get_file_content(Tools).
%----------------------------------------------------------------------
%Control that the data in the file really is erlang terms
%----------------------------------------------------------------------
get_file_content(Tools)->
Get_data=fun({tool,ToolData}) ->
%%io:format("Data : ~p ~n",[ToolData]),
case proplists:get_value(config_func,ToolData) of
{M,F,A}->
case catch apply(M,F,A) of
{'EXIT',_} ->
bad_data;
Data when is_tuple(Data) ->
Data;
_->
bad_data
end;
_ ->
bad_data
end
end,
insert_file_content([X ||X<-lists:map(Get_data,Tools),X/=bad_data]).
%----------------------------------------------------------------------
%Insert the data from the file in to the ets:table
%----------------------------------------------------------------------
insert_file_content(Content)->
Table=ets:new(app_data,[bag]),
lists:foreach(fun(X)->
insert_app(X,Table)
end,Content),
{ok,Table}.
%----------------------------------------------------------------------
%Control that we got a a tuple of a atom and a list if so add the
%elements in the list to the ets:table
%----------------------------------------------------------------------
insert_app({Name,Key_val_list},Table) when is_list(Key_val_list),is_atom(Name)->
%%io:format("ToolData: ~p: ~p~n",[Name,Key_val_list]),
lists:foreach(
fun({alias,{erl_alias,Alias,Mods}}) ->
Key_val = {erl_script_alias,{Alias,Mods}},
%%io:format("Insert: ~p~n",[Key_val]),
ets:insert(Table,{Name,Key_val});
(Key_val_pair)->
%%io:format("Insert: ~p~n",[Key_val_pair]),
ets:insert(Table,{Name,Key_val_pair})
end,
Key_val_list);
insert_app(_,_)->
ok.
%----------------------------------------------------------------------
% Select all the alias in the database
%----------------------------------------------------------------------
get_aliases(Data)->
MS = ets:fun2ms(fun({_,{erl_script_alias,Alias}}) ->
{erl_script_alias,Alias};
({_,{alias,Alias}}) ->
{alias,Alias}
end),
ets:select(Data,MS).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% %%
%% Helper functions %%
%% %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
get_standard_data(Port)->
[
{port,Port},
{bind_address,?DEFAULT_ADDR},
{server_name,"localhost"}
].
get_standard_data()->
case get_free_port(?DEFAULT_PORT,?MAX_NUMBER_OF_WEBTOOLS) of
{error,Reason} -> {error,Reason};
Port ->
[
{port,Port},
{bind_address,?DEFAULT_ADDR},
{server_name,"localhost"}
]
end.
get_free_port(_Port,0) ->
{error,no_free_port_found};
get_free_port(Port,N) ->
case gen_tcp:connect("localhost",Port,[]) of
{error, _Reason} ->
Port;
{ok,Sock} ->
gen_tcp:close(Sock),
get_free_port(Port+1,N-1)
end.
rest_of_standard_data() ->
[
%% Do not allow the server to be crashed by malformed http-request
{max_header_siz,1024},
{max_header_action,reply414},
%% Go on a straight ip-socket
{com_type,ip_comm},
%% Do not change the order of these module names!!
{modules,[mod_alias,
mod_auth,
mod_esi,
mod_actions,
mod_cgi,
mod_include,
mod_dir,
mod_get,
mod_head,
mod_log,
mod_disk_log]},
{directory_index,["index.html"]},
{default_type,"text/plain"}
].
get_path()->
code:priv_dir(webtool).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% These functions is used to shutdown the webserver
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%----------------------------------------------------------------------
% Shut down the webbserver
%----------------------------------------------------------------------
shutdown_server(State)->
{Addr,Port} = get_addr_and_port(State#state.web_data),
inets:stop(httpd,{Addr,Port}).
get_addr_and_port(Config) ->
Addr = proplists:get_value(bind_address,Config,?DEFAULT_ADDR),
Port = proplists:get_value(port,Config,?DEFAULT_PORT),
{Addr,Port}.
%----------------------------------------------------------------------
% Select all apps in the table and close them
%----------------------------------------------------------------------
shutdown_apps(State)->
Data=State#state.app_data,
MS = ets:fun2ms(fun({_,{start,HowToStart}}) -> HowToStart end),
lists:foreach(fun(Start_app)->
stop_app(Start_app)
end,
ets:select(Data,MS)).
%----------------------------------------------------------------------
%Shuts down the supervisor that supervises tools that is not
%Designed as applications
%----------------------------------------------------------------------
shutdown_supervisor(State)->
%io:format("~n==================~n"),
webtool_sup:stop(State#state.supvis).
%io:format("~n==================~n").
%----------------------------------------------------------------------
%close the individual apps.
%----------------------------------------------------------------------
stop_app({child,_Real_name})->
ok;
stop_app({app,Real_name})->
application:stop(Real_name);
stop_app({func,_Start,Stop})->
case Stop of
{M,F,A} ->
catch apply(M,F,A);
_NoStop ->
ok
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% These functions creates the webpage where the user can select if
%% to start apps or to stop apps
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
toolbar_page()->
"
".
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% These functions creates the webbpage that shows the started apps
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%----------------------------------------------------------------------
% started_tools(State)->String (html table)
% State is a record of type state
%----------------------------------------------------------------------
started_tools(State)->
Names=get_started_apps(State#state.app_data,State#state.started),
"
"++ make_rows(Names,[],0) ++"
".
%----------------------------------------------------------------------
%get_started_apps(Data,Started)-> [{web_name,link}]
%selects the started apps from the ets table of apps.
%----------------------------------------------------------------------
get_started_apps(Data,Started)->
SelectData=fun({Name,Link}) ->
{Name,Link}
end,
MS = lists:map(fun(A) -> {{A,{web_data,'$1'}},[],['$1']} end,Started),
[{"WebTool","/tool_management.html"} |
[SelectData(X) || X <- ets:select(Data,MS)]].
%----------------------------------------------------------------------
% make_rows(List,Result,Fields)-> String (The rows of a htmltable
% List a list of tupler discibed above
% Result an accumulator for the result
% Field, counter that counts the number of cols in each row.
%----------------------------------------------------------------------
make_rows([],Result,Fields)->
Result ++ fill_out(Fields);
make_rows([Data|Paths],Result,Field)when Field==0->
make_rows(Paths,Result ++ "
",0);
make_rows([Path|Paths],Result,Field)->
make_rows(Paths,Result ++ make_field(Path),Field+1).
%----------------------------------------------------------------------
% make_fields(Path)-> String that is a field i a html table
% Path is a name url tuple {Name,url}
%----------------------------------------------------------------------
make_field(Path)->
"
" ++ get_name(Path) ++ "
".
%----------------------------------------------------------------------
%get_name({Nae,Url})->String that represents a tag in html.
%----------------------------------------------------------------------
get_name({Name,Url})->
"" ++ Name ++ "".
%----------------------------------------------------------------------
% fill_out(Nr)-> String, that represent Nr fields in a html-table.
%----------------------------------------------------------------------
fill_out(Nr)when Nr==0->
[];
fill_out(Nr)when Nr==4->
"
";
fill_out(Nr)->
"
" ++ fill_out(Nr+1).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%%These functions starts applicatons and builds the page showing tools
%%to start
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%----------------------------------------------------------------------
%Controls whether the user selected a tool to start
%----------------------------------------------------------------------
get_tools(Input)->
case httpd:parse_query(Input) of
[]->
no_tools;
Tools->
FormatData=fun({_Name,Data}) -> list_to_atom(Data) end,
SelectData=
fun({Name,_Data}) -> string:equal(Name,"app") end,
{tools,[FormatData(X)||X<-Tools,SelectData(X)]}
end.
%----------------------------------------------------------------------
% Selects the data to start the applications the user has ordered
% starting of
%----------------------------------------------------------------------
handle_apps([],State,_Cmd)->
{ok,State};
handle_apps([Tool|Tools],State,Cmd)->
case ets:match_object(State#state.app_data,{Tool,{start,'_'}}) of
[]->
Started = case Cmd of
start ->
[Tool|State#state.started];
stop ->
lists:delete(Tool,State#state.started)
end,
{ok,#state{priv_dir=State#state.priv_dir,
app_data=State#state.app_data,
supvis=State#state.supvis,
web_data=State#state.web_data,
started=Started}};
ToStart ->
case handle_apps2(ToStart,State,Cmd) of
{ok,NewState}->
handle_apps(Tools,NewState,Cmd);
_->
handle_apps(Tools,State,Cmd)
end
end.
%----------------------------------------------------------------------
%execute every start or stop data about a tool.
%----------------------------------------------------------------------
handle_apps2([{Name,Start_data}],State,Cmd)->
case handle_app({Name,Start_data},State#state.app_data,State#state.supvis,Cmd) of
ok->
Started = case Cmd of
start ->
[Name|State#state.started];
stop ->
lists:delete(Name,State#state.started)
end,
{ok,#state{priv_dir=State#state.priv_dir,
app_data=State#state.app_data,
supvis=State#state.supvis,
web_data=State#state.web_data,
started=Started}};
_->
error
end;
handle_apps2([{Name,Start_data}|Rest],State,Cmd)->
case handle_app({Name,Start_data},State#state.app_data,State#state.supvis,Cmd)of
ok->
handle_apps2(Rest,State,Cmd);
_->
error
end.
%----------------------------------------------------------------------
% Handle start and stop of applications
%----------------------------------------------------------------------
handle_app({Name,{start,{func,Start,Stop}}},Data,_Pid,Cmd)->
Action = case Cmd of
start ->
Start;
_ ->
Stop
end,
case Action of
{M,F,A} ->
case catch apply(M,F,A) of
{'EXIT',_} = Exit->
%%! Here the tool disappears from the webtool interface!!
io:format("\n=======ERROR (webtool, line ~w) =======\n"
"Could not start application \'~p\'\n\n"
"~w:~w(~s) ->\n"
"~p\n\n",
[?LINE,Name,M,F,format_args(A),Exit]),
ets:delete(Data,Name);
_OK->
ok
end;
_NoStart ->
ok
end;
handle_app({Name,{start,{child,ChildSpec}}},Data,Pid,Cmd)->
case Cmd of
start ->
case catch supervisor:start_child(Pid,ChildSpec) of
{ok,_}->
ok;
{ok,_,_}->
ok;
{error,Reason}->
%%! Here the tool disappears from the webtool interface!!
io:format("\n=======ERROR (webtool, line ~w) =======\n"
"Could not start application \'~p\'\n\n"
"supervisor:start_child(~p,~p) ->\n"
"~p\n\n",
[?LINE,Name,Pid,ChildSpec,{error,Reason}]),
ets:delete(Data,Name);
Error ->
%%! Here the tool disappears from the webtool interface!!
io:format("\n=======ERROR (webtool, line ~w) =======\n"
"Could not start application \'~p\'\n\n"
"supervisor:start_child(~p,~p) ->\n"
"~p\n\n",
[?LINE,Name,Pid,ChildSpec,Error]),
ets:delete(Data,Name)
end;
stop ->
case catch supervisor:terminate_child(websup,element(1,ChildSpec)) of
ok ->
supervisor:delete_child(websup,element(1,ChildSpec));
_ ->
error
end
end;
handle_app({Name,{start,{app,Real_name}}},Data,_Pid,Cmd)->
case Cmd of
start ->
case application:start(Real_name,temporary) of
ok->
io:write(Name),
ok;
{error,{already_started,_}}->
%% Remove it from the database so we dont start
%% anything already started
ets:match_delete(Data,{Name,{start,{app,Real_name}}}),
ok;
{error,_Reason}=Error->
%%! Here the tool disappears from the webtool interface!!
io:format("\n=======ERROR (webtool, line ~w) =======\n"
"Could not start application \'~p\'\n\n"
"application:start(~p,~p) ->\n"
"~p\n\n",
[?LINE,Name,Real_name,temporary,Error]),
ets:delete(Data,Name)
end;
stop ->
application:stop(Real_name)
end;
%----------------------------------------------------------------------
% If the data is incorrect delete the app
%----------------------------------------------------------------------
handle_app({Name,Incorrect},Data,_Pid,Cmd)->
%%! Here the tool disappears from the webtool interface!!
io:format("\n=======ERROR (webtool, line ~w) =======\n"
"Could not ~w application \'~p\'\n\n"
"Incorrect data: ~p\n\n",
[?LINE,Cmd,Name,Incorrect]),
ets:delete(Data,Name).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% %%
%% this functions creates the page that shows the unstarted tools %%
%% %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
reload_started_apps()->
"".
show_unstarted_apps(State)->
"
".
list_available_apps(State)->
MS = ets:fun2ms(fun({Tool,{web_data,{Name,_}}}) -> {Tool,Name} end),
Unstarted_apps=
lists:filter(
fun({Tool,_})->
false==lists:member(Tool,State#state.started)
end,
ets:select(State#state.app_data,MS)),
case Unstarted_apps of
[]->
"
All tools are started
";
_->
list_apps(Unstarted_apps)
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% %%
%% these functions creates the page that shows the started apps %%
%% the user can select to shutdown %%
%% %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
show_started_apps(State)->
"
".
list_started_apps(State)->
MS = lists:map(fun(A) -> {{A,{web_data,{'$1','_'}}},[],[{{A,'$1'}}]} end,
State#state.started),
Started_apps= ets:select(State#state.app_data,MS),
case Started_apps of
[]->
"
"
end,
Apps).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% %%
%% Collecting the data from the *.tool files %%
%% %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%----------------------------------------
% get_tools(Dirs) => [{M,F,A},{M,F,A}...{M,F,A}]
% Dirs - [string()] Directory names
% Calls get_tools2/2 recursively for a number of directories
% to retireve the configuration data for the web based tools.
%----------------------------------------
get_tools1(Dirs)->
get_tools1(Dirs,[]).
get_tools1([Dir|Rest],Data) when is_list(Dir) ->
Tools=case filename:basename(Dir) of
%% Dir is an 'ebin' directory, check in '../priv' as well
"ebin" ->
[get_tools2(filename:join(filename:dirname(Dir),"priv")) |
get_tools2(Dir)];
_ ->
get_tools2(Dir)
end,
get_tools1(Rest,[Tools|Data]);
get_tools1([],Data) ->
lists:flatten(Data).
%----------------------------------------
% get_tools2(Directory) => DataList
% DataList : [WebTuple]|[]
% WebTuple: {tool,[{web,M,F,A}]}
%
%----------------------------------------
get_tools2(Dir)->
get_tools2(tool_files(Dir),[]).
get_tools2([ToolFile|Rest],Data) ->
case get_tools3(ToolFile) of
{tool,WebData} ->
get_tools2(Rest,[{tool,WebData}|Data]);
{error,_Reason} ->
get_tools2(Rest,Data);
nodata ->
get_tools2(Rest,Data)
end;
get_tools2([],Data) ->
Data.
%----------------------------------------
% get_tools3(ToolFile) => {ok,Tool}|{error,Reason}|nodata
% Tool: {tool,[KeyValTuple]}
% ToolFile - string() A .tool file
% Now we have the file get the data and sort it out
%----------------------------------------
get_tools3(ToolFile) ->
case file:consult(ToolFile) of
{error,open} ->
{error,nofile};
{error,read} ->
{error,format};
{ok,[{version,"1.2"},ToolInfo]} when is_list(ToolInfo)->
webdata(ToolInfo);
{ok,[{version,_Vsn},_Info]} ->
{error,old_version};
{ok,_Other} ->
{error,format}
end.
%----------------------------------------------------------------------
% webdata(TupleList)-> ToolTuple| nodata
% ToolTuple: {tool,[{config_func,{M,F,A}}]}
%
% There are a little unneccesary work in this format but it is extendable
%----------------------------------------------------------------------
webdata(TupleList)->
case proplists:get_value(config_func,TupleList,nodata) of
{M,F,A} ->
{tool,[{config_func,{M,F,A}}]};
_ ->
nodata
end.
%=============================================================================
% Functions for getting *.tool configuration files
%=============================================================================
%----------------------------------------
% tool_files(Dir) => ToolFiles
% Dir - string() Directory name
% ToolFiles - [string()]
% Return the list of all files in Dir ending with .tool (appended to Dir)
%----------------------------------------
tool_files(Dir) ->
case file:list_dir(Dir) of
{ok,Files} ->
filter_tool_files(Dir,Files);
{error,_Reason} ->
[]
end.
%----------------------------------------
% filter_tool_files(Dir,Files) => ToolFiles
% Dir - string() Directory name
% Files, ToolFiles - [string()] File names
% Filters out the files in Files ending with .tool and append them to Dir
%----------------------------------------
filter_tool_files(_Dir,[]) ->
[];
filter_tool_files(Dir,[File|Rest]) ->
case filename:extension(File) of
".tool" ->
[filename:join(Dir,File)|filter_tool_files(Dir,Rest)];
_ ->
filter_tool_files(Dir,Rest)
end.
%%%-----------------------------------------------------------------
%%% format functions
ffunc({M,F,A}) when is_list(A) ->
io_lib:format("~w:~w(~s)\n",[M,F,format_args(A)]);
ffunc({M,F,A}) when is_integer(A) ->
io_lib:format("~w:~w/~w\n",[M,F,A]).
format_args([]) ->
"";
format_args(Args) ->
Str = lists:append(["~p"|lists:duplicate(length(Args)-1,",~p")]),
io_lib:format(Str,Args).