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test(robot): migrate test case test_migration_rollback #2179

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merged 2 commits into from
Dec 6, 2024

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@yangchiu yangchiu commented Dec 6, 2024

Which issue(s) this PR fixes:

Issue longhorn/longhorn#9909

What this PR does / why we need it:

migrate test case test_migration_rollback

Special notes for your reviewer:

Additional documentation or context

Summary by CodeRabbit

Release Notes

  • New Features

    • Introduced a new keyword for waiting on volume migration rollback.
    • Added a new test case for "Test Migration Rollback" to enhance testing scenarios.
  • Improvements

    • Renamed existing volume migration keywords for clarity and consistency.
    • Updated logging messages across various components to improve readability.
  • Bug Fixes

    • Enhanced existing test cases for volume migration to clarify steps and improve accuracy.

Signed-off-by: Yang Chiu <[email protected]>
@yangchiu yangchiu self-assigned this Dec 6, 2024
@yangchiu yangchiu requested a review from a team as a code owner December 6, 2024 01:03
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coderabbitai bot commented Dec 6, 2024

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Review failed

The pull request is closed.

Walkthrough

The pull request introduces several modifications across multiple files, primarily focusing on renaming keywords and methods related to volume migration for clarity and consistency. Key changes include renaming existing methods and keywords, adding new ones for rollback functionality, and updating logging messages. The changes span various components, including the volume.resource, CRD class, and several other classes related to volume management, ensuring that the overall functionality remains intact while enhancing the code's readability and maintainability.

Changes

File Path Change Summary
e2e/keywords/volume.resource Renamed keywords and function calls related to volume migration; added new rollback keyword.
e2e/libs/engine/crd.py Updated logging mechanism; simplified conditions in get_engines and delete_engine methods.
e2e/libs/keywords/volume_keywords.py Renamed methods for volume migration; added new rollback method.
e2e/libs/volume/base.py Renamed abstract methods related to volume migration; added new rollback method.
e2e/libs/volume/crd.py Renamed methods; enhanced internal logic for migration and rollback; updated logging.
e2e/libs/volume/rest.py Renamed methods; added new rollback method; included return statements where missing.
e2e/libs/volume/volume.py Renamed methods related to volume migration; added new rollback method.
e2e/tests/regression/test_migration.robot Updated existing test cases for clarity; added new test case for migration rollback.

Assessment against linked issues

Objective Addressed Explanation
Migrate test_migration.py::test_migration_rollback (#9909)

Possibly related PRs

Suggested reviewers

  • chriscchien

Poem

🐇 In the land of code where volumes play,
New names arise to brighten the day.
Rollbacks and migrations, all clear and bright,
With keywords anew, we take flight!
So hop along, dear coder, with glee,
For clarity blooms in our code's harmony! 🌼


📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between c7f7ed2 and 9208234.

📒 Files selected for processing (5)
  • e2e/keywords/volume.resource (1 hunks)
  • e2e/libs/keywords/volume_keywords.py (1 hunks)
  • e2e/libs/volume/crd.py (2 hunks)
  • e2e/libs/volume/rest.py (1 hunks)
  • e2e/libs/volume/volume.py (1 hunks)

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Actionable comments posted: 0

🧹 Outside diff range and nitpick comments (5)
e2e/libs/engine/crd.py (2)

Line range hint 1-1: Remove duplicate logging import

The logging module is imported twice, which causes a redefinition warning. The second import shadows the first one.

Apply this diff to fix the issue:

import logging

from kubernetes import client

from engine.base import Base
-from utility.utility import logging
+from utility.utility import logging as utility_logging

Also applies to: 6-6

🧰 Tools
🪛 Ruff (0.8.0)

6-6: Redefinition of unused logging from line 1

(F811)


14-15: Improved logging messages and conditional checks

The changes to logging messages and conditional checks improve code clarity. However, ensure consistent usage of the logging function throughout the file after fixing the duplicate import issue.

After fixing the duplicate import, update all logging calls to use the renamed import:

-            logging(f"Getting all engines of {volume_name}")
+            utility_logging(f"Getting all engines of {volume_name}")

Also applies to: 17-17, 20-20, 34-34, 38-38, 44-44, 46-46, 57-57

e2e/libs/volume/base.py (1)

84-92: LGTM! Consider adding docstrings for better documentation.

The abstract methods are well-defined with clear naming conventions. The addition of the rollback method completes the migration lifecycle handling.

Consider adding docstrings to describe the expected behavior and parameters:

 @abstractmethod
 def wait_for_volume_migration_to_be_ready(self, volume_name):
+    """Wait for volume to be ready for migration.
+    
+    Args:
+        volume_name (str): Name of the volume to check
+    """
     return NotImplemented
e2e/libs/keywords/volume_keywords.py (1)

271-281: LGTM! Consider standardizing log message format.

The implementation provides good logging and proper delegation to the Volume class. For consistency with other log messages in the file, consider standardizing the format:

-        logging(f'Waiting for volume {volume_name} migration to be ready')
+        logging(f'Waiting for volume {volume_name} to be ready for migration')

-        logging(f'Waiting for volume {volume_name} migration to node {node_name} complete')
+        logging(f'Waiting for volume {volume_name} to complete migration to node {node_name}')

-        logging(f'Waiting for volume {volume_name} migration to rollback to node {node_name}')
+        logging(f'Waiting for volume {volume_name} to rollback migration to node {node_name}')
e2e/libs/volume/crd.py (1)

331-343: Consider refactoring to reduce code duplication

The rollback check implementation is nearly identical to the migration completion check. Consider extracting the common logic into a helper method.

+    def _verify_engine_on_node(self, volume_name, node_name, operation_name):
+        verified = False
+        for i in range(self.retry_count):
+            logging(f"Waiting for volume {volume_name} {operation_name} to node {node_name} ({i}) ...")
+            try:
+                engines = self.engine.get_engines(volume_name)
+                verified = len(engines) == 1 and engines[0]['status']['endpoint'] and engines[0]['status']['ownerID'] == node_name
+                if verified:
+                    break
+            except Exception as e:
+                logging(f"Getting volume {volume_name} engines error: {e}")
+            time.sleep(self.retry_interval)
+        assert verified

     def wait_for_volume_migration_complete(self, volume_name, node_name):
-        complete = False
-        for i in range(self.retry_count):
-            logging(f"Waiting for volume {volume_name} migration to node {node_name} complete ({i}) ...")
-            try:
-                engines = self.engine.get_engines(volume_name)
-                complete = len(engines) == 1 and engines[0]['status']['endpoint'] and engines[0]['status']['ownerID'] == node_name
-                if complete:
-                    break
-            except Exception as e:
-                logging(f"Getting volume {volume_name} engines error: {e}")
-            time.sleep(self.retry_interval)
-        assert complete
+        self._verify_engine_on_node(volume_name, node_name, "migration")

     def wait_for_volume_migration_to_rollback(self, volume_name, node_name):
-        rollback = False
-        for i in range(self.retry_count):
-            logging(f"Waiting for volume {volume_name} migration to rollback to node {node_name} ({i}) ...")
-            try:
-                engines = self.engine.get_engines(volume_name)
-                rollback = len(engines) == 1 and engines[0]['status']['endpoint'] and engines[0]['status']['ownerID'] == node_name
-                if rollback:
-                    break
-            except Exception as e:
-                logging(f"Getting volume {volume_name} engines error: {e}")
-            time.sleep(self.retry_interval)
-        assert rollback
+        self._verify_engine_on_node(volume_name, node_name, "rollback")
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 39e61f5 and c7f7ed2.

📒 Files selected for processing (9)
  • e2e/keywords/volume.resource (1 hunks)
  • e2e/libs/engine/crd.py (3 hunks)
  • e2e/libs/keywords/volume_keywords.py (1 hunks)
  • e2e/libs/volume/base.py (1 hunks)
  • e2e/libs/volume/crd.py (2 hunks)
  • e2e/libs/volume/rest.py (1 hunks)
  • e2e/libs/volume/volume.py (1 hunks)
  • e2e/tests/regression/test_migration.robot (1 hunks)
  • e2e/tests/regression/test_v2.robot (1 hunks)
🧰 Additional context used
🪛 Ruff (0.8.0)
e2e/libs/engine/crd.py

6-6: Redefinition of unused logging from line 1

(F811)

🔇 Additional comments (10)
e2e/tests/regression/test_v2.robot (1)

Line range hint 58-74: Well-structured test case with comprehensive validation

The new test case is well-designed with:

  • Clear documentation of test purpose
  • Proper setup with storage class and PVC creation
  • Comprehensive validation steps including failure and success scenarios
  • Good use of loops for repeated validation
e2e/tests/regression/test_migration.robot (2)

42-46: Improved clarity in migration confirmation steps

The updates to the test steps improve clarity and add important health and data integrity checks.


48-71: Well-implemented migration rollback test

The new test case successfully implements the migration rollback scenario with:

  • Clear documentation of test steps and expected behavior
  • Proper validation of volume state and data integrity
  • Logical flow from migration setup to rollback verification

This implementation aligns well with the PR objective to migrate the test_migration_rollback test case.

e2e/libs/volume/volume.py (1)

72-79: LGTM! Clean implementation of the migration methods.

The implementation correctly delegates to the strategy pattern and maintains consistency with the base class interface.

e2e/keywords/volume.resource (3)

170-172: Improved keyword naming for better clarity

The renaming from "migration ready" to "migration to be ready" enhances readability and follows proper grammatical structure.


174-177: Enhanced keyword clarity with better phrasing

The renaming from "migrated to node" to "to migrate to node" improves readability and maintains consistent verb tense.


179-182: Well-structured addition of rollback functionality

The new keyword follows the established pattern and completes the migration-related functionality by adding rollback support.

e2e/libs/volume/rest.py (1)

74-81: Verify implementation in concrete classes

These NotImplemented stubs need concrete implementations. Let's verify the implementation exists in the appropriate concrete classes.

✅ Verification successful

Implementation exists in concrete CRD class

The NotImplemented stubs in rest.py are part of the interface pattern, and concrete implementations are found in:

  • e2e/libs/volume/crd.py - Contains full implementations with retry logic
  • e2e/libs/volume/base.py - Defines the abstract interface
  • e2e/libs/volume/volume.py - Provides delegation to the concrete implementation

The pattern is correctly implemented with proper inheritance and concrete implementations available.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for concrete implementations of these methods
# Test: Search for concrete implementations of the migration methods
rg -l "def (wait_for_volume_migration_to_be_ready|wait_for_volume_migration_complete|wait_for_volume_migration_to_rollback)" --type python

Length of output: 171


Script:

#!/bin/bash
# Search for concrete implementations of the migration methods without file type restriction
rg -l "def (wait_for_volume_migration_to_be_ready|wait_for_volume_migration_complete|wait_for_volume_migration_to_rollback)"

# Also search for files that might contain these implementations
fd -e py | grep -i "volume.*rest"

Length of output: 320


Script:

#!/bin/bash
# Check the actual implementations in the found files
rg "def (wait_for_volume_migration_to_be_ready|wait_for_volume_migration_complete|wait_for_volume_migration_to_rollback)" -A 5 e2e/libs/volume/volume.py e2e/libs/volume/base.py e2e/libs/volume/crd.py e2e/libs/keywords/volume_keywords.py

Length of output: 4774

e2e/libs/volume/crd.py (2)

Line range hint 301-315: Well-implemented migration readiness check

The implementation correctly verifies migration readiness by checking for two engines with valid endpoints.


317-329: Robust migration completion verification

The implementation properly verifies migration completion by checking for a single engine with the correct node ownership.

Verified

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