Rootwyrm_'s bug

gistfile1.txt

body common control
{
	bundlesequence => { "init", "work", "check" };
}

bundle agent init
{
   vars:
      "contents" slist => { 
         "root neil",
         "webmaster neil"
      };

   files:
      "/tmp/test_src"
         edit_defaults => empty,
         create        => 'true',
         edit_line     => insert_lines( @{contents} );
}

bundle agent work 
{
   files:
      "/tmp/test_target"
         create    => 'true',
         copy_from => local_cp( "/tmp/test_src" );

}

bundle agent check
{
   vars:
      "target_size" int => filesize( "/tmp/test_target" );

   classes:
      "PASS"
         expression =>
            returnszero( "/usr/bin/diff /tmp/test_src /tmp/test_target",
               "noshell"  );

      "FAIL"
         not =>
            returnszero( "/usr/bin/diff /tmp/test_src /tmp/test_target",
               "noshell"  );

      "FAIL" expression => strcmp( "0", "${target_size}" );

   reports:
      PASS.!FAIL:: "PASS";
      FAIL:: "FAIL";
}

body edit_defaults empty
{
      empty_file_before_editing => "true";
      edit_backup => "false";
}

bundle edit_line insert_lines(lines)
{
  insert_lines:

      "$(lines)"
      comment => "Append lines if they don't exist";
}

body copy_from local_cp(from)
{
      source      => "$(from)";
}

Run it:

neil@ettin ~/.cfagent/inputs $ cf-agent -Kf ./bug.cf
1,2d0
< root neil
< webmaster neil
1,2d0
< root neil
< webmaster neil
1,2d0
< root neil
< webmaster neil
R: FAIL

Now with digest copy


body common control
{
	bundlesequence => { "init", "work", "check" };
}

bundle agent init
{
   vars:
      "contents" slist => { 
         "root neil",
         "webmaster neil"
      };

   files:
      "/tmp/test_src"
         edit_defaults => empty,
         create        => 'true',
         edit_line     => insert_lines( @{contents} );
}

bundle agent work 
{
   files:
      "/tmp/test_target"
         create    => 'true',
         copy_from => local_cp( "/tmp/test_src" );

}

bundle agent check
{
   vars:
      "target_size" int => filesize( "/tmp/test_target" );

   classes:
      "PASS"
         expression =>
            returnszero( "/usr/bin/diff /tmp/test_src /tmp/test_target",
               "noshell"  );

      "FAIL"
         not =>
            returnszero( "/usr/bin/diff /tmp/test_src /tmp/test_target",
               "noshell"  );

      "FAIL" expression => strcmp( "0", "${target_size}" );

   reports:
      PASS.!FAIL:: "PASS";
      FAIL:: "FAIL";
}

body edit_defaults empty
{
      empty_file_before_editing => "true";
      edit_backup => "false";
}

bundle edit_line insert_lines(lines)
{
  insert_lines:

      "$(lines)"
      comment => "Append lines if they don't exist";
}

body copy_from local_cp(from)
{
      source  => "$(from)";
      compare => "digest";
}

And run it twice:
 $ rm /tmp/test_src /tmp/test_target; cf-agent -Kf ./bug.cf ; cf-agent -Kf ./bug.cf
/usr/bin/diff: /tmp/test_src: No such file or directory
/usr/bin/diff: /tmp/test_target: No such file or directory
/usr/bin/diff: /tmp/test_src: No such file or directory
/usr/bin/diff: /tmp/test_target: No such file or directory
/usr/bin/diff: /tmp/test_src: No such file or directory
/usr/bin/diff: /tmp/test_target: No such file or directory
R: FAIL
R: PASS