Read YAML from a variable to hash

Question

I have a linux command which fetches some data in YAML format from an API. I was looking for a way to populate this variable to a hash array. I was trying YAML::Tiny, and the chunk of code that I wrote was:

    use YAML::Tiny;
    my $stuff = `unix command that returns as yaml output`
    my $yaml = YAML::Tiny->new;
    $yaml = YAML::Tiny->new->read_string->($stuff);

But, running with this code will error out as:

    Can't use string ("") as a subroutine ref while "strict refs" in use

$stuff variable would look like:

    Cluster1:
        source_mount: /mnt/uploads
        dir: /a /b
        default: yes
        destination_mount: /var/pub

    Cluster2:
        source_mount: /mnt/uploads
        dir: /c /d /e
        default: no
        destination_mount: /var/pub

Answer 1

You should not use new twice, and there should not be -> after read_string (refer to the POD for YAML::Tiny). Change:

$yaml = YAML::Tiny->new->read_string->($stuff);

to:

$yaml = YAML::Tiny->read_string($stuff);

Here is a complete working example:

use warnings;
use strict;
use YAML::Tiny;

my $stuff = '
    Cluster1:
        source_mount: /mnt/uploads
        dir: /a /b
        default: yes
        destination_mount: /var/pub

    Cluster2:
        source_mount: /mnt/uploads
        dir: /c /d /e
        default: no
        destination_mount: /var/pub
';
my $yaml = YAML::Tiny->new();
$yaml = YAML::Tiny->read_string($stuff);
print $yaml->[0]->{Cluster2}->{dir}, "\n";

Output:

/c /d /e