CFEngine Help: Overwrite file with link in copy_from

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Forum: CFEngine Help
Subject: Overwrite file with link in copy_from
Author: FraserCampbell
Link to topic: https://cfengine.com/forum/read.php?3,27574,27574#msg-27574

I'm trying to replicate directory contents using copy_from but am running into 
an issue with links.  The source directory contains some links which are should 
replace legacy files in the current destination.

My copy_from body has type_check => "false" and purge => "true" but it's not 
sufficient, CFEngine refuses to overwrite the file with a link.

Here is the compaint issued by cf-agent:

cf3>  -> Destination file "/var/tmp/dest/link" already exists
cf3> Checksum comparison replaced by ctime: files not regular
cf3>  !! Image file /var/tmp/dest/link has a wrong digest/checksum (should be 
copy of /var/tmp/source/link)
cf3> Checking link from /var/tmp/dest/link to file
cf3>  !! Object /var/tmp/dest/link exists and is obstructing our promise
cf3>  !! Unable to create link /var/tmp/dest/link -> ./file

Here is a sample source and destination:

root@test:/var/tmp # ls -l /var/tmp/dest /var/tmp/source
/var/tmp/source:
total 2
-rw-r--r--   1 root     root           0 Sep 26 13:38 file
lrwxrwxrwx   1 root     root           4 Sep 26 13:38 link -> file

/var/tmp/dest:
total 0
-rw-r--r--   1 root     root           0 Sep 26 13:38 file
-rw-r--r--   1 root     root           0 Sep 26 13:38 link

And here is the bundle I'm using to test:

bundle agent test {
    files:
        any::
            "/var/tmp/dest"
                copy_from => my_cp("/var/tmp/source"),
                depth_search => recurse("inf");
}

body copy_from my_cp(from) {
    source => "${from}";
    compare => "digest";
    verify => "false";
    type_check => "false";
    copy_backup => "false";
    purge => "true";
}

body depth_search recurse(d) {
    depth => "$(d)";
    xdev  => "true";
}

Any suggestions?

Thanks,
Fraser

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