prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  `doc_values` parameter not set in Beats artifact 
  Certain fields have `index: false` and `doc_values: false` in their ECS definition, like `event.original`:
  
  https://github.com/elastic/ecs/blob/master/schemas/event.yml#L577-L599
  
  When `doc_values: false` is defined in the field definition, it's not being added to the maintained Beats fields YAML artifact:
  
  https://github.com/elastic/ecs/blob/master/generated/beats/fields.ecs.yml#L1737-L1750
  
  </issue>
  <code>
  [start of scripts/generators/beats.py]
  1 from os.path import join
  2 from collections import OrderedDict
  3 from generators import ecs_helpers
  4 
  5 
  6 def generate(ecs_nested, ecs_version, out_dir):
  7     # Load temporary allowlist for default_fields workaround.
  8     df_allowlist = ecs_helpers.yaml_load('scripts/generators/beats_default_fields_allowlist.yml')
  9 
  10     # base first
  11     beats_fields = fieldset_field_array(ecs_nested['base']['fields'], df_allowlist, ecs_nested['base']['prefix'])
  12 
  13     allowed_fieldset_keys = ['name', 'title', 'group', 'description', 'footnote', 'type']
  14     # other fieldsets
  15     for fieldset_name in sorted(ecs_nested):
  16         if 'base' == fieldset_name:
  17             continue
  18         fieldset = ecs_nested[fieldset_name]
  19 
  20         # Handle when `root:true`
  21         if fieldset.get('root', False):
  22             beats_fields.extend(fieldset_field_array(fieldset['fields'], df_allowlist, fieldset['prefix']))
  23             continue
  24 
  25         beats_field = ecs_helpers.dict_copy_keys_ordered(fieldset, allowed_fieldset_keys)
  26         beats_field['fields'] = fieldset_field_array(fieldset['fields'], df_allowlist, fieldset['prefix'])
  27         beats_fields.append(beats_field)
  28 
  29     beats_file = OrderedDict()
  30     beats_file['key'] = 'ecs'
  31     beats_file['title'] = 'ECS'
  32     beats_file['description'] = 'ECS Fields.'
  33     beats_file['fields'] = beats_fields
  34 
  35     write_beats_yaml(beats_file, ecs_version, out_dir)
  36 
  37 
  38 def fieldset_field_array(source_fields, df_allowlist, fieldset_prefix):
  39     allowed_keys = ['name', 'level', 'required', 'type', 'object_type',
  40                     'ignore_above', 'multi_fields', 'format', 'input_format',
  41                     'output_format', 'output_precision', 'description',
  42                     'example', 'enabled', 'index', 'path', 'scaling_factor']
  43     multi_fields_allowed_keys = ['name', 'type', 'norms', 'default_field', 'normalizer', 'ignore_above']
  44 
  45     fields = []
  46     for nested_field_name in source_fields:
  47         ecs_field = source_fields[nested_field_name]
  48         beats_field = ecs_helpers.dict_copy_keys_ordered(ecs_field, allowed_keys)
  49         if '' == fieldset_prefix:
  50             contextual_name = nested_field_name
  51         else:
  52             contextual_name = '.'.join(nested_field_name.split('.')[1:])
  53 
  54         cleaned_multi_fields = []
  55         if 'multi_fields' in ecs_field:
  56             for mf in ecs_field['multi_fields']:
  57                 # Set default_field if necessary. Avoid adding the key if the parent
  58                 # field already is marked with default_field: false.
  59                 if not mf['flat_name'] in df_allowlist and ecs_field['flat_name'] in df_allowlist:
  60                     mf['default_field'] = False
  61                 cleaned_multi_fields.append(
  62                     ecs_helpers.dict_copy_keys_ordered(mf, multi_fields_allowed_keys))
  63             beats_field['multi_fields'] = cleaned_multi_fields
  64 
  65         beats_field['name'] = contextual_name
  66 
  67         if not ecs_field['flat_name'] in df_allowlist:
  68             beats_field['default_field'] = False
  69 
  70         fields.append(beats_field)
  71     return sorted(fields, key=lambda x: x['name'])
  72 
  73 # Helpers
  74 
  75 
  76 def write_beats_yaml(beats_file, ecs_version, out_dir):
  77     ecs_helpers.make_dirs(join(out_dir, 'beats'))
  78     warning = file_header().format(version=ecs_version)
  79     ecs_helpers.yaml_dump(join(out_dir, 'beats/fields.ecs.yml'), [beats_file], preamble=warning)
  80 
  81 
  82 # Templates
  83 
  84 
  85 def file_header():
  86     return """
  87 # WARNING! Do not edit this file directly, it was generated by the ECS project,
  88 # based on ECS version {version}.
  89 # Please visit https://github.com/elastic/ecs to suggest changes to ECS fields.
  90 
  91 """.lstrip()
  92
  [end of scripts/generators/beats.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/scripts/generators/beats.py b/scripts/generators/beats.py
  --- a/scripts/generators/beats.py
  +++ b/scripts/generators/beats.py
  @@ -39,7 +39,8 @@
       allowed_keys = ['name', 'level', 'required', 'type', 'object_type',
                       'ignore_above', 'multi_fields', 'format', 'input_format',
                       'output_format', 'output_precision', 'description',
  -                    'example', 'enabled', 'index', 'path', 'scaling_factor']
  +                    'example', 'enabled', 'index', 'doc_values', 'path',
  +                    'scaling_factor']
       multi_fields_allowed_keys = ['name', 'type', 'norms', 'default_field', 'normalizer', 'ignore_above']
   
       fields = []
  
verification_info: {"golden_diff": "diff --git a/scripts/generators/beats.py b/scripts/generators/beats.py\n--- a/scripts/generators/beats.py\n+++ b/scripts/generators/beats.py\n@@ -39,7 +39,8 @@\n     allowed_keys = ['name', 'level', 'required', 'type', 'object_type',\n                     'ignore_above', 'multi_fields', 'format', 'input_format',\n                     'output_format', 'output_precision', 'description',\n-                    'example', 'enabled', 'index', 'path', 'scaling_factor']\n+                    'example', 'enabled', 'index', 'doc_values', 'path',\n+                    'scaling_factor']\n     multi_fields_allowed_keys = ['name', 'type', 'norms', 'default_field', 'normalizer', 'ignore_above']\n \n     fields = []\n", "issue": "`doc_values` parameter not set in Beats artifact \nCertain fields have `index: false` and `doc_values: false` in their ECS definition, like `event.original`:\r\n\r\nhttps://github.com/elastic/ecs/blob/master/schemas/event.yml#L577-L599\r\n\r\nWhen `doc_values: false` is defined in the field definition, it's not being added to the maintained Beats fields YAML artifact:\r\n\r\nhttps://github.com/elastic/ecs/blob/master/generated/beats/fields.ecs.yml#L1737-L1750\n", "before_files": [{"content": "from os.path import join\nfrom collections import OrderedDict\nfrom generators import ecs_helpers\n\n\ndef generate(ecs_nested, ecs_version, out_dir):\n    # Load temporary allowlist for default_fields workaround.\n    df_allowlist = ecs_helpers.yaml_load('scripts/generators/beats_default_fields_allowlist.yml')\n\n    # base first\n    beats_fields = fieldset_field_array(ecs_nested['base']['fields'], df_allowlist, ecs_nested['base']['prefix'])\n\n    allowed_fieldset_keys = ['name', 'title', 'group', 'description', 'footnote', 'type']\n    # other fieldsets\n    for fieldset_name in sorted(ecs_nested):\n        if 'base' == fieldset_name:\n            continue\n        fieldset = ecs_nested[fieldset_name]\n\n        # Handle when `root:true`\n        if fieldset.get('root', False):\n            beats_fields.extend(fieldset_field_array(fieldset['fields'], df_allowlist, fieldset['prefix']))\n            continue\n\n        beats_field = ecs_helpers.dict_copy_keys_ordered(fieldset, allowed_fieldset_keys)\n        beats_field['fields'] = fieldset_field_array(fieldset['fields'], df_allowlist, fieldset['prefix'])\n        beats_fields.append(beats_field)\n\n    beats_file = OrderedDict()\n    beats_file['key'] = 'ecs'\n    beats_file['title'] = 'ECS'\n    beats_file['description'] = 'ECS Fields.'\n    beats_file['fields'] = beats_fields\n\n    write_beats_yaml(beats_file, ecs_version, out_dir)\n\n\ndef fieldset_field_array(source_fields, df_allowlist, fieldset_prefix):\n    allowed_keys = ['name', 'level', 'required', 'type', 'object_type',\n                    'ignore_above', 'multi_fields', 'format', 'input_format',\n                    'output_format', 'output_precision', 'description',\n                    'example', 'enabled', 'index', 'path', 'scaling_factor']\n    multi_fields_allowed_keys = ['name', 'type', 'norms', 'default_field', 'normalizer', 'ignore_above']\n\n    fields = []\n    for nested_field_name in source_fields:\n        ecs_field = source_fields[nested_field_name]\n        beats_field = ecs_helpers.dict_copy_keys_ordered(ecs_field, allowed_keys)\n        if '' == fieldset_prefix:\n            contextual_name = nested_field_name\n        else:\n            contextual_name = '.'.join(nested_field_name.split('.')[1:])\n\n        cleaned_multi_fields = []\n        if 'multi_fields' in ecs_field:\n            for mf in ecs_field['multi_fields']:\n                # Set default_field if necessary. Avoid adding the key if the parent\n                # field already is marked with default_field: false.\n                if not mf['flat_name'] in df_allowlist and ecs_field['flat_name'] in df_allowlist:\n                    mf['default_field'] = False\n                cleaned_multi_fields.append(\n                    ecs_helpers.dict_copy_keys_ordered(mf, multi_fields_allowed_keys))\n            beats_field['multi_fields'] = cleaned_multi_fields\n\n        beats_field['name'] = contextual_name\n\n        if not ecs_field['flat_name'] in df_allowlist:\n            beats_field['default_field'] = False\n\n        fields.append(beats_field)\n    return sorted(fields, key=lambda x: x['name'])\n\n# Helpers\n\n\ndef write_beats_yaml(beats_file, ecs_version, out_dir):\n    ecs_helpers.make_dirs(join(out_dir, 'beats'))\n    warning = file_header().format(version=ecs_version)\n    ecs_helpers.yaml_dump(join(out_dir, 'beats/fields.ecs.yml'), [beats_file], preamble=warning)\n\n\n# Templates\n\n\ndef file_header():\n    return \"\"\"\n# WARNING! Do not edit this file directly, it was generated by the ECS project,\n# based on ECS version {version}.\n# Please visit https://github.com/elastic/ecs to suggest changes to ECS fields.\n\n\"\"\".lstrip()\n", "path": "scripts/generators/beats.py"}]}