CFEngine Help: Suggestions needed on folder structure and paths in promises

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Forum: CFEngine Help
Subject: Suggestions needed on folder structure and paths in promises
Author: sonofrage
Link to topic: https://cfengine.com/forum/read.php?3,26715,26715#msg-26715

Hi everyone,

I'm a beginner in cf-engine, and am starting with a simple project to run a few 
external shell scripts that I have created. Instead of directly working in the 
"masterfiles" folder, I have created a "/cf-test/project" folder which shall 
contain all the promises and required scripts. It has the following structure:
        
/cf-test/project/
         |-- promises.cf
         |-- cfengine_stdlib.cf
         |-- src/       (Contains all the bundles/bodies)
         |        |-- check_jdk.cf      
         |-- resources/
         |    |-- scripts/      (Contains scripts to be called from check_jdk.cf
         |        |-- check_java_version.sh
         |        |-- unzip_package.sh

I'm using relative paths to call the scripts from check_jdk.cf, like:
                
"scripts_folder" string => "resources/scripts";

My problem is, when I execute the promise, cfengine doesn't seem to find the sh 
files.
        
# /var/cfengine/bin/cf-agent -f ./promises.cf -I -K

Output:
        
Proposed executable file "resources/scripts/check_java_version.sh" doesn't exist
        ...
        Proposed executable file "resources/scripts/unzip_package.sh" doesn't 
exist

I tried to check the current directories by including the following commands:
In promises.cf:         "/bin/pwd";
In check_jdk.cf:        "/bin/pwd | echo";              (the command /bin/pwd 
wouldn't get executed twice)
And here's the output:
 
-> Executing '/bin/pwd' ...(timeout=-678,owner=-1,group=-1)
Q: ".../bin/pwd": /cf-test/project
..
 -> Executing '/bin/pwd | echo' ...(timeout=-678,owner=-1,group=-1)
Q: ".../bin/pwd | echo": /bin/pwd: ignoring non-option arguments
Q: ".../bin/pwd | echo": /cf-test



I don't understand how the current directory changed between the promises.cf 
and the check_jdk.cf files. What could be the meaning of this?

In essence, my question boils down to how I should go about referencing 
external files/paths inside promises, once I have defined a certain folder 
structure. Is it that everything needs to be an absolute path?

Regards,
sonofrage

I have include below the relevant portions of promises.cf and check_jdk.cf:


body common control 
{
bundlesequence => { 
        "path_check",
        "check_jdk"
};

inputs => 
 { 
        "cfengine_stdlib.cf",
        "src/check_jdk.cf"
 };
}

bundle agent path_check {
        commands:
        "/bin/pwd";
}




bundle common pdef
{
        vars:
        "scripts_folder" string => "resources/scripts";
        "packages_folder" string => "/usr/local/packages";
        "install_folder" string => "/usr/local/lib";
}

body classes defclasses (x)                 
{                                   
        promise_repaired => { "$(x)_repaired" };        
        repair_failed => { "$(x)_repair_failed" };  
        promise_kept => { "$(x)_promise_kept" };   
}

bundle agent check_jdk {
        vars:
        any::
                "jdk_version" string => "1.6.0_33";
        32_bit::
                "jdk_arch" string => "i586";
        64_bit::
                "jdk_arch" string => "x64";

        commands:
        "/bin/pwd | echo";

        "$(pdef.scripts_folder)/check_java_version.sh 6",
        classes => defclasses("jdk_6_check");

        jdk_6_check_repair_failed::
                "$(pdef.scripts_folder)/unzip_package.sh 
$(pdef.packages_folder)/jdk$(jdk_version).$(jdk_arch).zip 
$(pdef.install_folder)",
}


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