Adding option to select SLURM account

[monicagiraldochica]

(This question was also posted in the Announcement in Open OnDemand)

Hi, thank you for sharing this application, looks amazing. I am trying to personalize a few things and I am having some troubles. I hope the creators of the app will be able to help me.

I would like to add to my Slurm app a select widget with label “SLURM Account“ where the user can select under what slurm account they want to submit the job. Many users collaborate with different labs and have more than one Slurm account.

In other OnDemand apps we would add something like this:

account:
label: “SLURM Account”
required: true
<%- if SlurmAccounts.accounts.blank? -%>
widget: text_field
<%- else -%>
widget: select
options:
<%- SlurmAccounts.accounts.each do |a| -%>
“<%= a.strip %>”
<%- end -%>
<%- end -%>

But that doesn’t work, I get an Internal Server error. The file I’m editing is: sample_apps/Slurm/form.yml

I even tried something as simple as this just to test if javascript works, but I get a different error, that a key: value is not found in that line:

test1:
label: Test1
<%- if SlurmAccounts.accounts.blank? -%>
widget: text
<%- else -%>
widget: select
options:
[ “option1”, “” ]
[ “option2”, “” ]
<%- end -%>

To test further, I created the following widget to test if javascript does work but perhaps it just doesnt recognize our SlurmAccounts variable:

test1:
label: “<%= OC_SCRIPT_LOCATION %>”
widget: select
options:
[ “option1” ]
[ “option2” ]
[ “<%= SCRIPT_CONTENT %>” ]
[ <%= SCRIPT_CONTENT %> ]
[ “#{HEADER_SCRIPT_LOCATION}” ]

But the app shows literally “<%= SCRIPT_CONTENT %>” as a string and it doesn’t interpret the value of the variable.

So, in summary, how can I edit the form.yml (or any other necessary file) to be able to add a select widget where the values in options are the accounts the user belongs to? And more generally, how can i access variables that are declared outside that file?

Thanks!

[mnakao]

Thank you for your interest in Open Composer.

First, if you want to use ERB, rename form.yml to form.yml.erb.
I've confirmed that it works with the following form.yml.erb:

<%
class SlurmAccounts
  def self.accounts
    ["Alice", "Bob"]
  end
end
%>
---
form:
  account:
    label: SLURM Account
    required: true
    <%- if SlurmAccounts.accounts.empty? -%>
    widget: text
    <%- else -%>
    widget: select
    options:
      <%- SlurmAccounts.accounts.each do |a| -%>
      - ["<%= a.strip %>"]
      <%- end -%>
    <%- end -%>
script:	|
  #{account}

Please note that the blank? function is specific to Ruby on Rails and is not available in Open Composer.

And more generally, how can i access variables that are declared outside that file?

Please use require function in the top of form.yml.erb.
The following GitHub repository may be useful:
https://github.com/RIKEN-RCCS/composer_fugaku

Thanks,

[monicagiraldochica]

Thanks, it finally worked for me. For a while I was getting some errors because the class would return a String instead of an array, and then even though it would return an array, I could access the items of the array but not iterate with .each. Anyway, here I am sharing the code that finally worked in case someone needs in the future:

<%
require 'open3'

class SlurmAccounts
  def self.accounts
    return @accounts if defined?(@accounts) && @accounts.is_a?(Array)

    user = ENV['USER'] || ''
    cmd = "/opt/slurm/bin/sacctmgr -nP show assoc user=#{user} format=account"

    out, err, st = Open3.capture3(cmd)

    if st.success? && out && !out.strip.empty?
      accounts = out.to_s.split(/\s+/).reject(&:empty?).uniq
    else
      accounts = [""]
    end

    @accounts = Array(accounts)
  end
end

accounts = SlurmAccounts.accounts
accounts_size = accounts.size
first_account = accounts[0]
%>
---
form:
  account:
    label: "SLURM Account"
    required: true
<% if accounts_size == 1 && first_account == "" %>
    widget: text
<% else %>
    widget: select
    options:
<% (0...accounts_size).each do |i| %>
    - ["<%= accounts[i] %>", "<%= accounts[i] %>"]
<% end %>
<% end %>