source: trunk/gui/scripts/tool.tcl @ 3074

Last change on this file since 3074 was 3032, checked in by gah, 12 years ago

intermediate updates for vtkcontourviewer

File size: 14.6 KB
Line 
1# ----------------------------------------------------------------------
2#  COMPONENT: tool - represents an entire tool
3#
4#  This object represents an entire tool defined by Rappture.
5#  Each tool resides in an installation directory with other tool
6#  resources (libraries, examples, etc.).  Each tool is defined by
7#  its inputs and outputs, which are tied to various widgets in the
8#  GUI.  Each tool tracks the inputs, knows when they're changed,
9#  and knows how to run itself to produce new results.
10# ======================================================================
11#  AUTHOR:  Michael McLennan, Purdue University
12#  Copyright (c) 2004-2005  Purdue Research Foundation
13#
14#  See the file "license.terms" for information on usage and
15#  redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
16# ======================================================================
17package require BLT
18
19itcl::class Rappture::Tool {
20    inherit Rappture::ControlOwner
21
22    constructor {xmlobj installdir args} {
23        Rappture::ControlOwner::constructor ""
24    } { # defined below }
25
26    destructor { # defined below }
27
28    public method installdir {} { return $_installdir }
29
30    public method run {args}
31    public method abort {}
32    public method reset {}
33
34    protected method _mkdir {dir}
35    protected method _output {data}
36
37    private variable _origxml ""     ;# copy of original XML (for reset)
38    private variable _installdir ""  ;# installation directory for this tool
39    private variable _outputcb ""    ;# callback for tool output
40    private common job               ;# array var used for blt::bgexec jobs
41    private common jobnum 0          ;# counter for unique job number
42
43    # get global resources for this tool session
44    public proc resources {{option ""}}
45
46    public common _resources
47    public proc setAppName {name}   { set _resources(-appname) $name }
48    public proc setHubName {name}   { set _resources(-hubname) $name }
49    public proc setHubURL {name}    { set _resources(-huburl) $name }
50    public proc setSession {name}   { set _resources(-session) $name }
51    public proc setJobPrt {name}    { set _resources(-jobprotocol) $name }
52    public proc setResultDir {name} { set _resources(-resultdir) $name }
53}
54
55# must use this name -- plugs into Rappture::resources::load
56proc tool_init_resources {} {
57    Rappture::resources::register \
58        application_name  Rappture::Tool::setAppName \
59        application_id    Rappture::Tool::setAppId \
60        hub_name          Rappture::Tool::setHubName \
61        hub_url           Rappture::Tool::setHubURL \
62        session_token     Rappture::Tool::setSession \
63        job_protocol      Rappture::Tool::setJobPrt \
64        results_directory Rappture::Tool::setResultDir
65}
66
67# ----------------------------------------------------------------------
68# CONSTRUCTOR
69# ----------------------------------------------------------------------
70itcl::body Rappture::Tool::constructor {xmlobj installdir args} {
71    if {![Rappture::library isvalid $xmlobj]} {
72        error "bad value \"$xmlobj\": should be Rappture::Library"
73    }
74    set _xmlobj $xmlobj
75
76    # stash a copy of the original XML for later "reset" operations
77    set _origxml [Rappture::LibraryObj ::#auto "<?xml version=\"1.0\"?><run/>"]
78    $_origxml copy "" from $_xmlobj ""
79
80    if {![file exists $installdir]} {
81        error "directory \"$installdir\" doesn't exist"
82    }
83    set _installdir $installdir
84
85    eval configure $args
86}
87
88# ----------------------------------------------------------------------
89# DESTRUCTOR
90# ----------------------------------------------------------------------
91itcl::body Rappture::Tool::destructor {} {
92    itcl::delete object $_origxml
93}
94
95# ----------------------------------------------------------------------
96# USAGE: resources ?-option?
97#
98# Clients use this to query information about the tool.
99# ----------------------------------------------------------------------
100itcl::body Rappture::Tool::resources {{option ""}} {
101    if {$option == ""} {
102        return [array get _resources]
103    }
104    if {[info exists _resources($option)]} {
105        return $_resources($option)
106    }
107    return ""
108}
109
110# ----------------------------------------------------------------------
111# USAGE: run ?<path1> <value1> <path2> <value2> ...? ?-output <callbk>?
112#
113# This method causes the tool to run.  All widgets are synchronized
114# to the current XML representation, and a "driver.xml" file is
115# created as the input for the run.  That file is fed to the tool
116# according to the <tool><command> string, and the job is executed.
117#
118# Any "<path> <value>" arguments are used to override the current
119# settings from the GUI.  This is useful, for example, when filling
120# in missing simulation results from the analyzer.
121#
122# If the -output argument is included, then the next arg is a
123# callback command for output messages.  Any output that comes in
124# while the tool is running is sent back to the caller, so the user
125# can see progress running the tool.
126#
127# Returns a list of the form {status result}, where status is an
128# integer status code (0=success) and result is the output from the
129# simulator.  Successful output is something like {0 run1293921.xml},
130# where 0=success and run1293921.xml is the name of the file containing
131# results.
132# ----------------------------------------------------------------------
133itcl::body Rappture::Tool::run {args} {
134    global errorInfo
135
136    #
137    # Make sure that we save the proper application name.
138    # Actually, the best place to get this information is
139    # straight from the "installtool" script, but just in
140    # case we have an older tool, we should insert the
141    # tool name from the resources config file.
142    #
143    if {[info exists _resources(-appname)]
144          && "" != $_resources(-appname)
145          && "" == [$_xmlobj get tool.name]} {
146        $_xmlobj put tool.name $_resources(-appname)
147    }
148
149    # sync all widgets to the XML tree
150    sync
151
152    # if there are any args, use them to override parameters
153    set _outputcb ""
154    foreach {path val} $args {
155        if {$path == "-output"} {
156            set _outputcb $val
157        } else {
158            $_xmlobj put $path.current $val
159        }
160    }
161
162    foreach item {control output error} { set job($item) "" }
163
164    # write out the driver.xml file for the tool
165    set file "driver[pid].xml"
166    set status [catch {
167        set fid [open $file w]
168        puts $fid "<?xml version=\"1.0\"?>"
169        puts $fid [$_xmlobj xml]
170        close $fid
171    } result]
172
173    # set limits for cpu time
174    set limit [$_xmlobj get tool.limits.cputime]
175    if {"" == $limit || [catch {Rappture::rlimit set cputime $limit}]} {
176        Rappture::rlimit set cputime 900  ;# 15 mins by default
177    }
178
179    # execute the tool using the path from the tool description
180    if {$status == 0} {
181        set cmd [$_xmlobj get tool.command]
182        regsub -all @tool $cmd $_installdir cmd
183        regsub -all @driver $cmd $file cmd
184        regsub -all {\\} $cmd {\\\\} cmd
185        set cmd [string trimleft $cmd " "]
186        if { $cmd == "" } {
187            puts stderr "cmd is empty"
188            return [list 1 "Command is empty.\n\nThere is no command specified by\n\n <command>\n </command>\n\nin the tool.xml file."]
189        }
190        # if job_protocol is "submit", then use use submit command
191        if {[resources -jobprotocol] == "submit"} {
192            set cmd [linsert $cmd 0 submit --local]
193        }
194
195        # starting job...
196        Rappture::rusage mark
197
198        if {0 == [string compare -nocase -length 5 $cmd "ECHO "] } {
199            set status 0;
200            set job(output) [string range $cmd 5 end]
201        } else {
202            set status [catch {
203                eval blt::bgexec \
204                    ::Rappture::Tool::job(control) \
205                    -keepnewline yes \
206                    -killsignal SIGTERM \
207                    -onoutput [list [itcl::code $this _output]] \
208                    -output ::Rappture::Tool::job(output) \
209                    -error ::Rappture::Tool::job(error) \
210                    $cmd
211            } result]
212
213            if { $status != 0 } {
214                # We're here because the exec-ed program failed
215                if { $::Rappture::Tool::job(control) != "" } {
216                    foreach { token pid code mesg } \
217                        $::Rappture::Tool::job(control) break
218                    if { $token == "EXITED" } {
219                        # This means that the program exited normally but
220                        # returned a non-zero exitcode.  Consider this an
221                        # invalid result from the program.  Append the stderr
222                        # from the program to the message.
223                        append result \
224                            "\nProgram exited normally: exit code is $code\n\n"
225                        append result $::Rappture::Tool::job(error)
226                    } elseif { $token == "abort" }  {
227                        # The user pressed the abort button.
228                        set result "Program terminated by user.\n\n"
229                        append result $::Rappture::Tool::job(output)
230                    } else {
231                        # Abnormal termination
232                        set result "Abnormal program termination: $mesg\n\n"
233                        append result $::Rappture::Tool::job(output)
234                    }
235                }
236                return [list $status $result]
237            }
238        }
239        # ...job is finished
240        array set times [Rappture::rusage measure]
241
242        if {[resources -jobprotocol] != "submit"} {
243            set id [$_xmlobj get tool.id]
244            set vers [$_xmlobj get tool.version.application.revision]
245            set simulation simulation
246            if { $id != "" && $vers != "" } {
247                set pid [pid]
248                set simulation ${pid}_${id}_r${vers}
249            }
250            puts stderr "MiddlewareTime: job=[incr jobnum] event=$simulation start=$times(start) walltime=$times(walltime) cputime=$times(cputime) status=$status"
251
252            #
253            # Scan through stderr channel and look for statements that
254            # represent grid jobs that were executed.  The statements
255            # look like this:
256            #
257            # MiddlewareTime: job=1 event=simulation start=3.001094 ...
258            #
259            set subjobs 0
260            while {[regexp -indices {(^|\n)MiddlewareTime:( +[a-z]+=[^ \n]+)+(\n|$)} $job(error) match]} {
261                foreach {p0 p1} $match break
262                if {[string index $job(error) $p0] == "\n"} { incr p0 }
263
264                catch {unset data}
265                array set data {
266                    job 1
267                    event simulation
268                    start 0
269                    walltime 0
270                    cputime 0
271                    status 0
272                }
273                foreach arg [lrange [string range $job(error) $p0 $p1] 1 end] {
274                    foreach {key val} [split $arg =] break
275                    set data($key) $val
276                }
277                set data(job) [expr {$jobnum+$data(job)}]
278                set data(event) "subsimulation"
279                set data(start) [expr {$times(start)+$data(start)}]
280
281                set stmt "MiddlewareTime:"
282                foreach key {job event start walltime cputime status} {
283                    # add required keys in a particular order
284                    append stmt " $key=$data($key)"
285                    unset data($key)
286                }
287                foreach key [array names data] {
288                    # add anything else that the client gave -- venue, etc.
289                    append stmt " $key=$data($key)"
290                }
291                puts stderr $stmt
292                incr subjobs
293
294                # done -- remove this statement
295                set job(error) [string replace $job(error) $p0 $p1]
296            }
297            incr jobnum $subjobs
298        }
299
300    } else {
301        set job(error) "$result\n$errorInfo"
302    }
303    if {$status == 0} {
304        file delete -force -- $file
305    }
306
307    # see if the job was aborted
308    if {[regexp {^KILLED} $job(control)]} {
309        return [list 0 "ABORT"]
310    }
311
312    #
313    # If successful, return the output, which should include
314    # a reference to the run.xml file containing results.
315    #
316    if {$status == 0} {
317        set result [string trim $job(output)]
318        if {[regexp {=RAPPTURE-RUN=>([^\n]+)} $result match file]} {
319            set status [catch {Rappture::library $file} result]
320            if {$status != 0} {
321                global errorInfo
322                set result "$result\n$errorInfo"
323            }
324
325            # if there's a results_directory defined in the resources
326            # file, then move the run.xml file there for storage
327            if {[info exists _resources(-resultdir)]
328                  && "" != $_resources(-resultdir)} {
329                catch {
330                    if {![file exists $_resources(-resultdir)]} {
331                        _mkdir $_resources(-resultdir)
332                    }
333                    file rename -force -- $file $_resources(-resultdir)
334                }
335            }
336        } else {
337            set status 1
338            set result "Can't find result file in output.\nDid you call Rappture
339::result in your simulator?"
340        }
341        return [list $status $result]
342    } elseif {"" != $job(output) || "" != $job(error)} {
343        return [list $status [string trim "$job(output)\n$job(error)"]]
344    }
345    return [list $status $result]
346}
347
348# ----------------------------------------------------------------------
349# USAGE: _mkdir <directory>
350#
351# Used internally to create the <directory> in the file system.
352# The parent directory is also created, as needed.
353# ----------------------------------------------------------------------
354itcl::body Rappture::Tool::_mkdir {dir} {
355    set parent [file dirname $dir]
356    if {"." != $parent && "/" != $parent} {
357        if {![file exists $parent]} {
358            _mkdir $parent
359        }
360    }
361    file mkdir $dir
362}
363
364
365# ----------------------------------------------------------------------
366# USAGE: abort
367#
368# Clients use this during a "run" to abort the current job.
369# Kills the job and forces the "run" method to return.
370# ----------------------------------------------------------------------
371itcl::body Rappture::Tool::abort {} {
372    set job(control) "abort"
373}
374
375# ----------------------------------------------------------------------
376# USAGE: reset
377#
378# Resets all input values to their defaults.  Sometimes used just
379# before a run to reset to a clean state.
380# ----------------------------------------------------------------------
381itcl::body Rappture::Tool::reset {} {
382    $_xmlobj copy "" from $_origxml ""
383    foreach path [Rappture::entities -as path $_xmlobj input] {
384        if {[$_xmlobj element -as type $path.default] ne ""} {
385            set defval [$_xmlobj get $path.default]
386            $_xmlobj put $path.current $defval
387        }
388    }
389}
390
391# ----------------------------------------------------------------------
392# USAGE: _output <data>
393#
394# Used internally to send each bit of output <data> coming from the
395# tool onto the caller, so the user can see progress.
396# ----------------------------------------------------------------------
397itcl::body Rappture::Tool::_output {data} {
398    if {[string length $_outputcb] > 0} {
399        uplevel #0 $_outputcb [list $data]
400    }
401}
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