[Swift-devel] Assigning stdout to a string variable in Swift

[Emalayan Vairavanathan]

Hi All,

Is it possible to assign a stdout to a string variable in Swift ? 


I need to get the IP of a machine by executing an shell script and then assign it to a string variable. Please see the sample code pasted below (Here the string variable is  written to a file to verify program works correctly). But the program didn't make any progress and swift was repeatedly printing a message called "Initializing site shared directory:1" on the console.

Any ideas ? Is this swift code is correct ? or swift does not support this feature ? In case if swift does not support this feature, is there a way to use the stdout without writing to a file ?

Thank you
Emalayan


1) Source code

type messagefile;

app (string machine) get_machine (string fileName) {
    getIP fileName stdout = machine;
}

app (messagefile t) printIP (string m) {
        echo m stdout=@filename(t);
}

string IP = get_machine("myFile")
messagefile outfile <simple_mapper;prefix="foo",suffix=".txt">;
outfile = printIP(IP);

2) Tc file:

localhost cat /bin/cat null null null
localhost echo /bin/echo null null null
localhost getIP /home/emalayan/Workspace/Mosa_March_12/tools/synthaticBenchmark/swift-scripts/pipeline-loc-aware/wrappers/getIP.sh null null null

3)Site file:

<config>

  <pool handle="localhost">
    <filesystem provider="local" />
    <execution provider="local" />
    <workdirectory>/home/emalayan/Mosa_March_12/tools/synthaticBenchmark/swift-scripts/pipeline-loc-aware/swift.work</workdirectory>
    <profile namespace="karajan" key="jobThrottle">0</profile>
  </pool>

</config>


4) stdout:

Swift 0.93 swift-r5483 cog-r3339

RunID: 20120424-0950-tkdyv925
Progress:  time: Tue, 24 Apr 2012 09:50:45 -0700
Progress:  time: Tue, 24 Apr 2012 09:51:15 -0700  Initializing site shared directory:1
Progress:  time: Tue, 24 Apr 2012 09:51:45 -0700  Initializing site shared directory:1
Progress:  time: Tue, 24 Apr 2012 09:52:15 -0700  Initializing site shared directory:1
Progress:  time: Tue, 24 Apr 2012 09:52:45 -0700  Initializing site shared directory:1
Progress:  time: Tue, 24 Apr 2012 09:53:15 -0700  Initializing site shared directory:1
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