Error returned if the output is an array

[francescoingv]

Description When the output is defined to be an array the execution returns: Error executing process: cannot access local variable 'mode' where it is not associated with a value

Steps to Reproduce If the process metadata defined the following outputs:

  'outputs': {
    'title': 'Output result',
    'test_out': {
      'description': 'my test',
      'minOccurs': 2,
      'maxOccurs': 2,
      'schema': {
        'type': 'array',
        'minItems': 3,
        'maxItems': 3,
        'items': {
          'type': 'string'
        }
      }
    }

I understand the process execute() should return something like the following:

[ "application/json" ,
  [ { "value" :  [ "String 1 A" , "String 2 A" , "String 3 A" ] },
    { "value" :  [ "String 1 B" , "String 2 B" , "String 3 B" ] }
  ]
]

where the returned outputs is an array. However, if the above is returned by process execute(), then the error is returned.

I identified the problem in BaseManager._execute_handler_sync() as the variable 'mode' is only set if outputs is either a dict or bytes.

Expected behavior Not sure if the execution should return:

[ { "value" :  [ "String 1 A" , "String 2 A" , "String 3 A" ] },
  { "value" :  [ "String 1 B" , "String 2 B" , "String 3 B" ] }
]

or

{
  [ { "value" :  [ "String 1 A" , "String 2 A" , "String 3 A" ] },
    { "value" :  [ "String 1 B" , "String 2 B" , "String 3 B" ] }
  ]
}

Environment

• OS: Ubuntu
• Python version: 3.11
• pygeoapi version: master

[tomkralidis]

@francescoingv PR in #1675