Script to update CloudWatch Dashboard body Widgets without label with EC2 name tag

cloudwatch_dashboard_body_labels.sh

# Gets instances without labels in the widgets
labelLessInstance=$( cat temp.json | 
    jq '
    . | 
    (
        [
            .widgets[] | 
            select( 
                (.type == "metric") and (.properties.metrics[0][0] == "AWS/EC2") 
            ) | 
            [ 
                ( .properties.metrics[1:][] | select(.[2].label == null) | .[1] )
            ] as $instanceIds |
            { 
                (.properties.metrics[0][1]) : ($instanceIds)
            }
        ]
    ) as $instances |
    (
        to_entries[0].value | 
        map( 
            (.type == "metric") and (.properties.metrics[0][0] == "AWS/EC2" )
        ) 
        | indices(true) 
    ) as $indices |  
    reduce range($instances|length) as $i  
        ( {}; . + { ( $indices[ $i ] | tostring ) : $instances[ $i ] })
')

# Gets tags of missing labels with tags 
instanceIds=$( echo $labelLessInstance | jq --raw-output '[ .[][][] ] | unique | join(" ")' )

tags=$(aws ec2 describe-instances --region us-east-1 --instance-ids $instanceIds | 
jq '[
        .Reservations[].Instances[] | 
        {
            (.InstanceId):
            (.Tags[] | select( (.Key == "Name") and ( .Value != "" ) ) | .Value)
        }
    ] | reduce .[] as $item ({}; . + $item)