Update python-default template to use presets: catalog/schema

libs/template/templates/dbt-sql/databricks_template_schema.json

@@ -45,7 +45,7 @@
             "default": "default",
             "pattern": "^\\w+$",
             "pattern_match_failure_message": "Invalid schema name.",
-            "description": "\nPlease provide an initial schema during development.\ndefault_schema",
+            "description": "\nPlease provide a default schema during development.\ndefault_schema",
             "order": 5
         }
     },

libs/template/templates/default-python/databricks_template_schema.json

@@ -4,7 +4,7 @@
         "project_name": {
             "type": "string",
             "default": "my_project",
-            "description": "Please provide the following details to tailor the template to your preferences.\n\nUnique name for this project",
+            "description": "\nPlease provide a unique name for this project.\nproject_name",
             "order": 1,
             "pattern": "^[A-Za-z0-9_]+$",
             "pattern_match_failure_message": "Name must consist of letters, numbers, and underscores."
@@ -13,23 +13,55 @@
             "type": "string",
             "default": "yes",
             "enum": ["yes", "no"],
-            "description": "Include a stub (sample) notebook in '{{.project_name}}{{path_separator}}src'",
+            "description": "\nWould you like to include a stub (sample) notebook in '{{.project_name}}{{path_separator}}src'?",
             "order": 2
         },
         "include_dlt": {
             "type": "string",
             "default": "yes",
             "enum": ["yes", "no"],
-            "description": "Include a stub (sample) Delta Live Tables pipeline in '{{.project_name}}{{path_separator}}src'",
+            "description": "Would you like to include a stub (sample) Delta Live Tables pipeline in '{{.project_name}}{{path_separator}}src'?",
             "order": 3
         },
         "include_python": {
             "type": "string",
             "default": "yes",
             "enum": ["yes", "no"],
-            "description": "Include a stub (sample) Python package in '{{.project_name}}{{path_separator}}src'",
+            "description": "Would you like to include a stub (sample) Python package in '{{.project_name}}{{path_separator}}src'?",
             "order": 4
+        },
+        "default_catalog": {
+            "type": "string",
+            "default": "{{default_catalog}}",
+            "pattern": "^\\w*$",
+            "pattern_match_failure_message": "Invalid catalog name.",
+            "description": "\nPlease provide an initial catalog{{if eq (default_catalog) \"\"}} (leave blank when not using Unity Catalog){{end}}.\ndefault_catalog",
+            "order": 5
+        },
+        "personal_schemas": {
+            "type": "string",
+            "description": "\nWould you like to use a personal schema for each user working on this project? (e.g., 'catalog.{{short_name}}')\npersonal_schemas",
+            "enum": [
+                "yes, use a schema based on the current user name during development",
+                "no, use a shared schema during development"
+            ],
+            "order": 6
+        },
+        "shared_schema": {
+            "skip_prompt_if": {
+                "properties": {
+                    "personal_schemas": {
+                        "const": "yes, use a schema based on the current user name during development"
+                    }
+                }
+            },
+            "type": "string",
+            "default": "default",
+            "pattern": "^\\w+$",
+            "pattern_match_failure_message": "Invalid schema name.",
+            "description": "\nPlease provide default schema during development.\ndefault_schema",
+            "order": 7
         }
     },
-    "success_message": "Workspace to use (auto-detected, edit in '{{.project_name}}/databricks.yml'): {{workspace_host}}\n\n✨ Your new project has been created in the '{{.project_name}}' directory!\n\nPlease refer to the README.md file for \"getting started\" instructions.\nSee also the documentation at https://docs.databricks.com/dev-tools/bundles/index.html."
+    "success_message": "\nWorkspace to use (auto-detected, edit in '{{.project_name}}/databricks.yml').\nworkspace_host: {{workspace_host}}\n\n✨ Your new project has been created in the '{{.project_name}}' directory!\n\nPlease refer to the README.md file for \"getting started\" instructions.\nSee also the documentation at https://docs.databricks.com/dev-tools/bundles/index.html."
 }

libs/template/templates/default-python/template/{{.project_name}}/databricks.yml.tmpl

@@ -6,6 +6,13 @@ bundle:
 include:
   - resources/*.yml
 
+{{- $dev_schema := .shared_schema }}
+{{- $prod_schema := .shared_schema }}
+{{- if (regexp "^yes").MatchString .personal_schemas}}
+  {{- $dev_schema = "${workspace.current_user.short_name}"}}
+  {{- $prod_schema = "default"}}
+{{- end}}
+
 targets:
   dev:
     # The default target uses 'mode: development' to create a development copy.
@@ -16,6 +23,9 @@ targets:
     default: true
     workspace:
       host: {{workspace_host}}
+    presets:
+      catalog: {{.default_catalog}}
+      schema: {{$dev_schema}}
 
   prod:
     mode: production
@@ -26,5 +36,6 @@ targets:
     permissions:
       - {{if is_service_principal}}service_principal{{else}}user{{end}}_name: {{user_name}}
         level: CAN_MANAGE
-    run_as:
-      {{if is_service_principal}}service_principal{{else}}user{{end}}_name: {{user_name}}
+    presets:
+      catalog: {{.default_catalog}}
+      schema: {{$prod_schema}}

libs/template/templates/default-python/template/{{.project_name}}/resources/{{.project_name}}.job.yml.tmpl

@@ -16,16 +16,12 @@ resources:
           interval: 1
           unit: DAYS
 
-      {{- if not is_service_principal}}
-
+      {{if not is_service_principal -}}
       email_notifications:
         on_failure:
           - {{user_name}}
 
-      {{else}}
-
       {{end -}}
-
       tasks:
         {{- if eq .include_notebook "yes" }}
         - task_key: notebook_task

libs/template/templates/default-python/template/{{.project_name}}/resources/{{.project_name}}.pipeline.yml.tmpl

@@ -3,13 +3,6 @@ resources:
   pipelines:
     {{.project_name}}_pipeline:
       name: {{.project_name}}_pipeline
-      {{- if or (eq default_catalog "") (eq default_catalog "hive_metastore")}}
-      ## Specify the 'catalog' field to configure this pipeline to make use of Unity Catalog:
-      # catalog: catalog_name
-      {{- else}}
-      catalog: {{default_catalog}}
-      {{- end}}
-      target: {{.project_name}}_${bundle.target}
       libraries:
         - notebook:
             path: ../src/dlt_pipeline.ipynb

libs/template/templates/default-python/template/{{.project_name}}/scratch/exploration.ipynb.tmpl

@@ -27,15 +27,25 @@
    },
    "outputs": [],
    "source": [
-   {{- if (eq .include_python "yes") }}
+    {{- if (eq .include_python "yes") }}
     "import sys\n",
     "sys.path.append('../src')\n",
     "from {{.project_name}} import main\n",
     "\n",
-    "main.get_taxis(spark).show(10)"
-   {{else}}
-    "spark.range(10)"
-   {{end -}}
+    {{- /* We can use the short form here without 'dbutils.text()' since the widgets are defined in the metadata below. */}}
+    "catalog = dbutils.widgets.get('catalog')\n",
+    "schema = dbutils.widgets.get('schema')\n",
+    "spark.sql(f'USE {catalog}.{schema}')\n",
+    "\n",
+    "spark.sql('SELECT * FROM example').show(10)"
+    {{- else}}
+    "# Load default catalog and schema as widget and set their values as the default catalog / schema\n",
+    "catalog = dbutils.widgets.get('catalog')\n",
+    "schema = dbutils.widgets.get('schema')\n",
+    "spark.sql(f'USE {catalog}.{schema}')\n",
+    "\n",
+    "spark.sql('SELECT * FROM example').show(10)"
+   {{- end}}
    ]
   }
  ],
@@ -46,8 +56,63 @@
    "notebookMetadata": {
     "pythonIndentUnit": 2
    },
-   "notebookName": "ipynb-notebook",
-   "widgets": {}
+   "notebookName": "exploration",
+   "widgets": {
+    "catalog": {
+     "currentValue": "{{.default_catalog}}",
+     "nuid": "c47e96d8-5751-4c8a-9d6b-5c6c7c3f1234",
+     "typedWidgetInfo": {
+      "autoCreated": false,
+      "defaultValue": "{{.default_catalog}}",
+      "label": null,
+      "name": "catalog",
+      "options": {
+       "widgetDisplayType": "Text",
+       "validationRegex": null
+      },
+      "parameterDataType": "String"
+     },
+     "widgetInfo": {
+      "widgetType": "text",
+      "defaultValue": "{{.default_catalog}}",
+      "label": null,
+      "name": "catalog",
+      "options": {
+       "widgetType": "text",
+       "autoCreated": null,
+       "validationRegex": null
+      }
+     }
+    },
+{{- $dev_schema := .shared_schema }}
+{{- if (regexp "^yes").MatchString .personal_schemas}}
+  {{- $dev_schema = "{{short_name}}"}}
+{{- end}}
+    "schema": {
+     "currentValue": "{{$dev_schema}}",
+     "nuid": "c47e96d8-5751-4c8a-9d6b-5c6c7c3f5678",
+     "typedWidgetInfo": {
+      "autoCreated": false,
+      "defaultValue": "{{$dev_schema}}",
+      "label": null,
+      "name": "schema",
+      "options": {
+       "widgetDisplayType": "Text",
+       "validationRegex": null
+      },
+      "parameterDataType": "String"
+     },
+     "widgetInfo": {
+      "widgetType": "text",
+      "defaultValue": "{{$dev_schema}}",
+      "label": null,
+      "name": "schema",
+      "options": {
+       "widgetType": "text",
+       "autoCreated": null,
+       "validationRegex": null
+      }
+     }
   },
   "kernelspec": {
    "display_name": "Python 3",

libs/template/templates/default-python/template/{{.project_name}}/src/notebook.ipynb.tmpl

@@ -23,8 +23,11 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "%load_ext autoreload\n",
-    "%autoreload 2"
+    "# Load default catalog and schema as widget and set their values as the default catalog / schema\n",
+    {{- /* We can use the short form here without 'dbutils.text()' since the widgets are defined in the metadata below. */}}
+    "catalog = dbutils.widgets.get('catalog')\n",
+    "schema = dbutils.widgets.get('schema')\n",
+    "spark.sql(f'USE {catalog}.{schema}')"
    ]
   },
   {
@@ -47,9 +50,9 @@
    {{- if (eq .include_python "yes") }}
     "from {{.project_name}} import main\n",
     "\n",
-    "main.get_taxis(spark).show(10)"
+    "main.create_example_table()"
    {{else}}
-    "spark.range(10)"
+    "spark.sql("CREATE OR REPLACE TABLE example AS SELECT 'example table' AS text_column")"
    {{end -}}
    ]
   }
@@ -62,7 +65,64 @@
     "pythonIndentUnit": 2
    },
    "notebookName": "notebook",
-   "widgets": {}
+   "widgets": {
+    "catalog": {
+     "currentValue": "{{.default_catalog}}",
+     "nuid": "3965fc9c-8080-45b1-bee3-f75cef7685b4",
+     "typedWidgetInfo": {
+      "autoCreated": false,
+      "defaultValue": "{{.default_catalog}}",
+      "label": null,
+      "name": "catalog",
+      "options": {
+       "widgetDisplayType": "Text",
+       "validationRegex": null
+      },
+      "parameterDataType": "String"
+     },
+     "widgetInfo": {
+      "widgetType": "text",
+      "defaultValue": "{{.default_catalog}}",
+      "label": null,
+      "name": "catalog",
+      "options": {
+       "widgetType": "text",
+       "autoCreated": null,
+       "validationRegex": null
+      }
+     }
+    },
+{{- $dev_schema := .shared_schema }}
+{{- if (regexp "^yes").MatchString .personal_schemas}}
+  {{- $dev_schema = "{{short_name}}"}}
+{{- end}}
+    "schema": {
+     "currentValue": "{{$dev_schema}}",
+     "nuid": "6ec0d70f-39bf-4859-a510-02c3e3d59bff",
+     "typedWidgetInfo": {
+      "autoCreated": false,
+      "defaultValue": "{{$dev_schema}}",
+      "label": null,
+      "name": "schema",
+      "options": {
+       "widgetDisplayType": "Text",
+       "validationRegex": null
+      },
+      "parameterDataType": "String"
+     },
+     "widgetInfo": {
+      "widgetType": "text",
+      "defaultValue": "{{$dev_schema}}",
+      "label": null,
+      "name": "schema",
+      "options": {
+       "widgetType": "text",
+       "autoCreated": null,
+       "validationRegex": null
+      }
+     }
+    }
+   }
   },
   "kernelspec": {
    "display_name": "Python 3",

libs/template/templates/default-python/template/{{.project_name}}/src/{{.project_name}}/main.py.tmpl

@@ -1,21 +1,39 @@
 from pyspark.sql import SparkSession, DataFrame
+import argparse
 
-def get_taxis(spark: SparkSession) -> DataFrame:
-  return spark.read.table("samples.nyctaxi.trips")
-
-
-# Create a new Databricks Connect session. If this fails,
-# check that you have configured Databricks Connect correctly.
-# See https://docs.databricks.com/dev-tools/databricks-connect.html.
 def get_spark() -> SparkSession:
+  """
+  Create a new Databricks Connect session. If this fails,
+  check that you have configured Databricks Connect correctly.
+  See https://docs.databricks.com/dev-tools/databricks-connect.html.
+  """
   try:
     from databricks.connect import DatabricksSession
     return DatabricksSession.builder.getOrCreate()
   except ImportError:
     return SparkSession.builder.getOrCreate()
 
+def get_taxis(spark: SparkSession) -> DataFrame:
+  return spark.read.table("samples.nyctaxi.trips")
+
+def create_example_table():
+  """
+  Create a table called 'example' in the default catalog and schema.
+  """
+  get_spark().sql("CREATE OR REPLACE TABLE example AS SELECT 'example table' AS text_column")
+
 def main():
-  get_taxis(get_spark()).show(5)
+  # Set the catalog and schema for the current session.
+  # In the default template, these parameters are set
+  # using the 'catalog' and 'schema' presets in databricks.yml.
+  parser = argparse.ArgumentParser()
+  parser.add_argument('--catalog', required=True)
+  parser.add_argument('--schema', required=True)
+  args, unknown = parser.parse_known_args()
+  spark = get_spark()
+  spark.sql(f"USE {args.catalog}.{args.schema}")
+
+  create_example_table()
 
 if __name__ == '__main__':
   main()

libs/template/templates/default-sql/databricks_template_schema.json

@@ -45,7 +45,7 @@
             "default": "default",
             "pattern": "^\\w+$",
             "pattern_match_failure_message": "Invalid schema name.",
-            "description": "\nPlease provide an initial schema during development.\ndefault_schema",
+            "description": "\nPlease provide a default schema during development.\ndefault_schema",
             "order": 5
         }
     },