Rudder

The problem seems to lie in `Rudder.pm`.

Following script works as expected:

 
#!/bin/bash

JSON_RESULT=$(/opt/admin/bin/osqueryi --json "SELECT device, device_alias, path, flags FROM mounts WHERE type = 'xfs' OR type like '%ext%';" | jq '{"mounts": .}')
echo $JSON_RESULT

This one doesn't:

#!/bin/bash

command_exists () {
    command -v $1 >/dev/null 2>&1;
}

if command_exists osqueryi && command_exists jq; then
    JSON_RESULT=$(/opt/admin/bin/osqueryi --json "SELECT device, device_alias, path, flags FROM mounts WHERE type = 'xfs' OR type like '%ext%';" | jq '{"mounts": .}')
    echo $JSON_RESULT
fi

With that error:

Q: "...-inventory --lo": [error] Script /var/rudder/hooks.d/mounts.sh didn't return valid JSON entry, error is:malformed JSON string, neither array, object, number, string or atom, at character offset 0 (before "(end of string)") at /opt/rudder/share/fusioninventory/lib/FusionInventory/Agent/Task/Inventory/Generic/Rudder.pm line 127.
Q: "...-inventory --lo": [error] JSON in error is:

=> variable `$properties` is empty

                if ($@) {
                    $logger->error("Script $script_file didn't return valid JSON entry, error is:$@") if $logger;
                    #print Dumper($properties);
                    $logger->error("JSON in error is: $properties") if $logger;
                }

And with that log, we can see it is already empty here:

...

eval {
                    my $package = "JSON::PP";
                    $package->require();
                    if ($EVAL_ERROR) {
                        print STDERR
                            "Failed to load JSON module: ($EVAL_ERROR)\n";
                        next;
                    }
                    my $coder = JSON::PP->new;
                    print Dumper($properties);
                    my $propertiesData = $coder->decode($properties);
                    push custom_properties_list, $coder->encode($propertiesData);
                };
                if ($) {
                    $logger->error("Script $script_file didn't return valid JSON entry, error is:$@") if $logger;
                    print Dumper($properties);
                    $logger->error("JSON in error is: $properties") if $logger;
                }

...

Gives output:

Q: "...-inventory --lo": [error] Script /var/rudder/hooks.d/mounts.sh didn't return valid JSON entry, error is:malformed JSON string, neither array, object, number, string or atom, at character offset 0 (before "(end of string)") at /opt/rudder/share/fusioninventory/lib/FusionInventory/Agent/Task/Inventory/Generic/Rudder.pm line 127.
Q: "...-inventory --lo": [error] JSON in error is:
Q: "...-inventory --lo": $VAR1 = '';
Q: "...-inventory --lo": $VAR1 = '';