vdk-control-cli: pass the printer class in JobDeploy creation and add…

… additional memory printer (#2477)

What:Introduced an enhanced feature, the MemoryPrinter, it conserves
text for future use, instead of instant printing. Along with this,
adapted the JobDeploy class to receive a printer object instead of an
OutputFormat enum.

Why:
The inclusion of MemoryPrinter caters to use cases where an output needs
to be stored for later representation, such as in a Jupyter UI. This
modification in the JobDeploy class enables the printer object's use
beyond JobDeploy: the printer can be initialised first, utilised within
JobDeploy, and then accessed again to retrieve the stored output. This
stops the need for accessing private fields within JobDeploy and
promotes better coding practices.

Signed-off-by: Duygu Hasan [hduygu@vmware.com](mailto:hduygu@vmware.com)

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

projects/vdk-control-cli/src/vdk/internal/control/command_groups/job/deploy_cli.py

@@ -9,6 +9,7 @@
 from vdk.internal.control.command_groups.job.deploy_cli_impl import JobDeploy
 from vdk.internal.control.configuration.defaults_config import load_default_team_name
 from vdk.internal.control.utils import cli_utils
+from vdk.internal.control.utils import output_printer
 from vdk.internal.control.utils.cli_utils import get_or_prompt
 
 
@@ -169,7 +170,7 @@ def deploy(
     rest_api_url: str,
     output: str,
 ):
-    cmd = JobDeploy(rest_api_url, output)
+    cmd = JobDeploy(rest_api_url, output_printer.create_printer(output))
     if operation == DeployOperation.UPDATE.value or enabled is not None:
         name = get_or_prompt("Job Name", name)
         team = get_or_prompt("Job Team", team)

projects/vdk-control-cli/src/vdk/internal/control/command_groups/job/deploy_cli_impl.py

@@ -19,9 +19,10 @@
 from vdk.internal.control.job.job_config import JobConfig
 from vdk.internal.control.rest_lib.factory import ApiClientFactory
 from vdk.internal.control.rest_lib.rest_client_errors import ApiClientErrorDecorator
-from vdk.internal.control.utils import output_printer
 from vdk.internal.control.utils.cli_utils import get_or_prompt
-from vdk.internal.control.utils.output_printer import OutputFormat
+from vdk.internal.control.utils.output_printer import Printer
+from vdk.internal.control.utils.output_printer import PrinterJson
+from vdk.internal.control.utils.output_printer import PrinterText
 
 log = logging.getLogger(__name__)
 
@@ -30,16 +31,15 @@ class JobDeploy:
     ZIP_ARCHIVE_TYPE = "zip"
     ARCHIVE_SUFFIX = "-archive"
 
-    def __init__(self, rest_api_url: str, output_format: str):
+    def __init__(self, rest_api_url: str, printer: Printer):
         self.deploy_api = ApiClientFactory(rest_api_url).get_deploy_api()
         self.jobs_api = ApiClientFactory(rest_api_url).get_jobs_api()
         self.job_sources_api = ApiClientFactory(rest_api_url).get_jobs_sources_api()
         # support for multiple deployments is not implemented yet so we can put anything here.
         # Ultimately this will be user facing parameter (possibly fetched from config.ini)
         self.__deployment_id = "production"
         self.__job_archive = JobArchive()
-        self.__output_format = output_format
-        self.__printer = output_printer.create_printer(self.__output_format)
+        self.__printer = printer
 
     @staticmethod
     def __detect_keytab_files_in_job_directory(job_path: str) -> None:
@@ -193,7 +193,7 @@ def __update_deployment(self, name: str, team: str, deployment: DataJobDeploymen
         self.deploy_api.deployment_update(
             team_name=team, job_name=name, data_job_deployment=deployment
         )
-        if self.__output_format == OutputFormat.TEXT.value:
+        if isinstance(self.__printer, PrinterText):
             log.info(
                 f"Request to deploy Data Job {name} using version {deployment.job_version} finished successfully.\n"
                 f"It would take a few minutes for the Data Job to be deployed in the server.\n"
@@ -239,7 +239,7 @@ def show(self, name: str, team: str) -> None:
                 ),
                 deployments,
             )
-            if self.__output_format == OutputFormat.TEXT.value:
+            if isinstance(self.__printer, PrinterText):
                 click.echo(
                     "You can compare the version seen here to the one seen when "
                     "deploying to verify your deployment was successful."
@@ -283,7 +283,7 @@ def create(
             "Team Name", team or job_config.get_team() or load_default_team_name()
         )
 
-        if self.__output_format == OutputFormat.TEXT.value:
+        if isinstance(self.__printer, PrinterText):
             log.info(
                 f"Deploy Data Job with name {name} from directory {job_path} ... \n"
             )
@@ -294,10 +294,10 @@ def create(
         try:
             job_archive_binary = self.__archive_binary(archive_path)
 
-            if self.__output_format == OutputFormat.TEXT.value:
+            if isinstance(self.__printer, PrinterText):
                 log.info("Uploading the data job might take some time ...")
             with click_spinner.spinner(
-                disable=(self.__output_format == OutputFormat.JSON.value)
+                disable=(isinstance(self.__printer, PrinterJson))
             ):
                 data_job_version = self.job_sources_api.sources_upload(
                     team_name=team,

projects/vdk-control-cli/src/vdk/internal/control/utils/output_printer.py

@@ -1,6 +1,7 @@
 # Copyright 2023-2023 VMware, Inc.
 # SPDX-License-Identifier: Apache-2.0
 import abc
+import io
 import json
 from enum import Enum
 from enum import unique
@@ -60,7 +61,7 @@ def decorator(cls):
 
 
 @printer("text")
-class _PrinterText(Printer):
+class PrinterText(Printer):
     def print_table(self, table: Optional[List[Dict[str, Any]]]) -> None:
         if table and len(table) > 0:
             click.echo(tabulate(table, headers="keys", tablefmt="fancy_grid"))
@@ -93,7 +94,7 @@ def json_serial(obj):
 
 
 @printer("json")
-class _PrinterJson(Printer):
+class PrinterJson(Printer):
     def print_table(self, data: List[Dict[str, Any]]) -> None:
         if data:
             click.echo(json_format(data))
@@ -107,6 +108,35 @@ def print_dict(self, data: Dict[str, Any]) -> None:
             click.echo("{}")
 
 
+class InMemoryTextPrinter(Printer):
+    def __init__(self):
+        self.__output_buffer = io.StringIO()
+
+    def print_table(self, table: Optional[List[Dict[str, Any]]]) -> None:
+        if table and len(table) > 0:
+            print(
+                tabulate(table, headers="keys", tablefmt="fancy_grid"),
+                file=self.__output_buffer,
+            )
+        else:
+            print("No Data.", file=self.__output_buffer)
+
+    def print_dict(self, data: Optional[Dict[str, Any]]) -> None:
+        if data:
+            print(
+                tabulate(
+                    [[k, v] for k, v in data.items()],
+                    headers=("key", "value"),
+                ),
+                file=self.__output_buffer,
+            )
+        else:
+            print("No Data.", file=self.__output_buffer)
+
+    def get_memory(self):
+        return self.__output_buffer.getvalue()
+
+
 def create_printer(output_format: str) -> Printer:
     """
     Creates a printer instance for the given output format.

projects/vdk-control-cli/tests/vdk/internal/control/utils/test_output_printer.py

@@ -1,22 +1,24 @@
 # Copyright 2023-2023 VMware, Inc.
 # SPDX-License-Identifier: Apache-2.0
+import unittest
 from typing import Any
 from typing import Dict
 from typing import List
 from unittest.mock import patch
 
 import pytest
 from vdk.internal.control.utils import output_printer
-from vdk.internal.control.utils.output_printer import _PrinterJson
-from vdk.internal.control.utils.output_printer import _PrinterText
 from vdk.internal.control.utils.output_printer import create_printer
+from vdk.internal.control.utils.output_printer import InMemoryTextPrinter
 from vdk.internal.control.utils.output_printer import Printer
+from vdk.internal.control.utils.output_printer import PrinterJson
+from vdk.internal.control.utils.output_printer import PrinterText
 
 
 class TestPrinterText:
     def test_print_dict(self):
         with patch("click.echo") as mock_echo:
-            printer = _PrinterText()
+            printer = PrinterText()
             data = {"key": "value"}
 
             printer.print_dict(data)
@@ -26,7 +28,7 @@ def test_print_dict(self):
 
     def test_print_table_with_data(self):
         with patch("click.echo") as mock_echo:
-            printer = _PrinterText()
+            printer = PrinterText()
 
             data = [{"key1": "value1", "key2": 2}, {"key1": "value3", "key2": 4}]
 
@@ -45,7 +47,7 @@ def test_print_table_with_data(self):
 
     def test_print_table_with_no_data(self):
         with patch("click.echo") as mock_echo:
-            printer = _PrinterText()
+            printer = PrinterText()
             data = []
 
             printer.print_table(data)
@@ -57,7 +59,7 @@ def test_print_table_with_no_data(self):
 class TestPrinterJson:
     def test_print_dict(self):
         with patch("click.echo") as mock_echo:
-            printer = _PrinterJson()
+            printer = PrinterJson()
 
             data = {"key": "value"}
 
@@ -68,7 +70,7 @@ def test_print_dict(self):
 
     def test_print_table(self):
         with patch("click.echo") as mock_echo:
-            printer = _PrinterJson()
+            printer = PrinterJson()
             data = [
                 {"key1": "value1", "key2": "value2"},
                 {"key1": "value3", "key2": "value4"},
@@ -79,6 +81,53 @@ def test_print_table(self):
             mock_echo.assert_called_once_with(expected_output)
 
 
+class TestMemoryPrinter(unittest.TestCase):
+    def setUp(self):
+        self.printer = InMemoryTextPrinter()
+
+    def test_print_dict(self):
+        data = {"key": "value"}
+
+        self.printer.print_dict(data)
+
+        output = self.printer.get_memory().strip()
+
+        self.assertIn("key", output)
+        self.assertIn("value", output)
+
+    def test_print_table(self):
+        data = [
+            {"key1": "value1", "key2": "value2"},
+            {"key1": "value3", "key2": "value4"},
+        ]
+        self.printer.print_table(data)
+
+        output = self.printer.get_memory().strip()
+
+        self.assertIn("key1", output)
+        self.assertIn("key2", output)
+        self.assertIn("value1", output)
+        self.assertIn("value2", output)
+        self.assertIn("value3", output)
+        self.assertIn("value4", output)
+
+    def test_print_dict_no_data(self):
+        self.printer.print_dict(None)
+
+        expected_output = "No Data."
+        actual_output = self.printer.get_memory().strip()
+
+        self.assertEqual(actual_output, expected_output)
+
+    def test_print_table_no_data(self):
+        self.printer.print_table(None)
+
+        expected_output = "No Data."
+        actual_output = self.printer.get_memory().strip()
+
+        self.assertEqual(actual_output, expected_output)
+
+
 class TestCreatePrinter:
     def test_create_printer_with_registered_format(self):
         class MockPrinter(Printer):