if ($variable) after upgrade from 5.5 to 6

[Helmut Schneider]

Hi,

helmut@puppet:~$ sudo puppet lookup --node mynode roles
helmut@puppet:~$

Good because does not exist.

class common inherits config {
include $classes
if ($roles) {
keys($roles).each |String $role| { <== line9
[...]

Error: Could not retrieve catalog from remote server: Error 500 on
SERVER: Server Error: Evaluation Error: Error while evaluating a
Function Call, 'keys' parameter 'hsh' expects a Hash value, got Array
(file: /etc/puppetlabs/code/modules/common/manifests/init.pp, line: 9,
column: 5) on node mynode

Why? $roles does not exists so why is keys($roles).each |String $role| {
executed?

helmut@puppet:~$ puppet -V
6.16.0
helmut@puppet:~$ puppetserver -v
puppetserver version: 6.12.0
helmut@puppet:~$

Thank you!

[Helmut Schneider]

Am 17.06.2020 um 13:10 schrieb Helmut Schneider:

> helmut@puppet:~$ sudo puppet lookup --node mynode roles
> helmut@puppet:~$
>
> Good because does not exist.
>
> class common inherits config {
> include $classes
> if ($roles) {
> keys($roles).each |String $role| { <== line9
> [...]
>
> Error: Could not retrieve catalog from remote server: Error 500 on
> SERVER: Server Error: Evaluation Error: Error while evaluating a
> Function Call, 'keys' parameter 'hsh' expects a Hash value, got Array
> (file: /etc/puppetlabs/code/modules/common/manifests/init.pp, line: 9,
> column: 5) on node mynode
>
> Why? $roles does not exists so why is keys($roles).each |String $role| {
> executed?

I forgot:

$roles = lookup({
"name" => "roles",
"merge" => {
"strategy" => "deep",
"knockout_prefix" => "--",
# "sort_merged_arrays" => true,
},
# "default_value" => [],
"default_value" => undef,
})

I had "default_value" => [] active. Anyway, I thought that if
($variable) is an empty array it also results in 'false'. Can I check if
an array has elements?

[Dirk Heinrichs]

Am Mittwoch, den 17.06.2020, 13:37 +0200 schrieb Helmut Schneider:

Can I check if  an array has elements?

if size($something) > 0 {}

HTH...

Dirk

-- 

Dirk Heinrichs

Senior Systems Engineer, Delivery Pipeline

OpenText ™ Discovery | Recommind

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Email: dhei...@opentext.com

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[Helmut Schneider]

Am 17.06.2020 um 15:01 schrieb 'Dirk Heinrichs' via Puppet Users:
> Am Mittwoch, den 17.06.2020, 13:37 +0200 schrieb Helmut Schneider:
>
>> Can I check if  an array has elements?
>
> if size($something) > 0 {}

Found $array.empty but thank you.