fix: update configmap if exists #566
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Actionable comments posted: 3
🧹 Outside diff range and nitpick comments (1)
pkg/k8s/types.go (1)
78-78: LGTM: New method enhances ConfigMap managementThe addition of the
UpdateConfigMapmethod is appropriate and aligns with the PR objectives. It provides a way to explicitly update an existing ConfigMap, which complements theCreateOrUpdateConfigMapmethod.Consider adding a comment to clarify the behavior if the ConfigMap doesn't exist. For example:
// UpdateConfigMap updates an existing ConfigMap. If the ConfigMap doesn't exist, it returns an error. UpdateConfigMap(ctx context.Context, name string, labels, data map[string]string) (*corev1.ConfigMap, error)
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (4)
- pkg/instance/storage.go (1 hunks)
- pkg/k8s/configmap.go (1 hunks)
- pkg/k8s/errors.go (1 hunks)
- pkg/k8s/types.go (2 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- pkg/instance/storage.go
🔇 Additional comments not posted (4)
pkg/k8s/types.go (2)
23-23: LGTM: New method aligns with PR objectivesThe addition of
CreateOrUpdateConfigMapmethod is appropriate and aligns well with the PR objectives. It provides a flexible way to manage ConfigMaps, allowing for creation or update as needed. This should help resolve the issues with upgrade tests failing due to existing configmaps.
23-23: Verify interface implementationsThe additions to the
KubeManagerinterface enhance ConfigMap management capabilities and align well with the PR objectives. These changes provide the necessary flexibility to handle existing ConfigMaps during upgrades.To ensure consistency across the codebase, please verify that all implementations of the
KubeManagerinterface are updated to include these new methods. Run the following script to identify potential places that need updates:This script will help identify areas of the codebase that may need to be updated to implement the new methods.
Also applies to: 78-78
✅ Verification successful
All KubeManager implementations are up-to-date
The
KubeManagerinterface only has implementations inpkg/k8s/configmap.go, and bothCreateOrUpdateConfigMapandUpdateConfigMapmethods are properly implemented there. No additional implementations require updates.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Find potential implementations of KubeManager interface # Search for struct types that might implement KubeManager echo "Potential KubeManager implementations:" rg --type go "type \w+ struct" -A 10 | rg "KubeManager" # Search for KubeManager method implementations echo "\nPotential KubeManager method implementations:" rg --type go "func \(\w+ \*\w+\) (CreateOrUpdateConfigMap|UpdateConfigMap)"Length of output: 856
Script:
#!/bin/bash # Description: Verify all KubeManager implementations have the required methods # Find all structs that implement KubeManager IMPLEMENTATIONS=$(rg --type go "type\s+\w+\s+struct" -g '*.go' | rg "KubeManager" | awk -F':' '{print $1}') echo "Checking implementations in the following files:" echo "$IMPLEMENTATIONS" for file in $IMPLEMENTATIONS; do echo "\n$file:" # Check for CreateOrUpdateConfigMap method rg -q "func\s+\(\w+\s+\*\w+\)\s+CreateOrUpdateConfigMap" "$file" && echo " - CreateOrUpdateConfigMap: ✅" || echo " - CreateOrUpdateConfigMap: ❌ Missing" # Check for UpdateConfigMap method rg -q "func\s+\(\w+\s+\*\w+\)\s+UpdateConfigMap" "$file" && echo " - UpdateConfigMap: ✅" || echo " - UpdateConfigMap: ❌ Missing" doneLength of output: 226
Script:
#!/bin/bash # Description: Comprehensive search for all implementations and usages of KubeManager interface echo "Searching for all usages of KubeManager interface:" # Search for struct embeddings of KubeManager echo "\nStructs embedding KubeManager:" rg --type go "type\s+\w+\s+struct" -A 10 | rg "KubeManager" # Search for interface implementations using ast-grep echo "\nSearching for implementations using ast-grep:" ast-grep --lang go --pattern ' type $_Interface interface { CreateOrUpdateConfigMap($_, $_) UpdateConfigMap($_) } ' # Search for variable declarations of type KubeManager echo "\nVariable declarations of type KubeManager:" rg --type go "\bKubeManager\b.*="Length of output: 1616
pkg/k8s/errors.go (1)
139-139: LGTM: New error variable added for configmap update failures.The addition of
ErrUpdatingConfigmapis appropriate and aligns with the PR objective to address issues with updating existing configmaps. The error message is clear and consistent with the formatting of other errors in this file.To ensure this new error is being used correctly, let's check for its usage in the codebase:
✅ Verification successful
Verified: New error variable is correctly used in the codebase.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for usage of the new error variable rg --type go "ErrUpdatingConfigmap"Length of output: 239
pkg/k8s/configmap.go (1)
67-92: Ensure termination check is consistent across methodsIn
UpdateConfigMap, the termination check is performed after entering the function, which is consistent with other methods. However, in the refactoredCreateOrUpdateConfigMap, the termination check was added as part of the refactoring.[consistency]
Verify that all methods in the
Clientstruct perform the termination check, and ensure they are placed consistently at the beginning of each method for clarity.
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Actionable comments posted: 3
🧹 Outside diff range and nitpick comments (1)
pkg/k8s/validate.go (1)
280-288: LGTM! Consider enhancing error messages.The
validateConfigMapfunction is well-structured and correctly utilizes existing validation functions. It aligns with the PR objective of updating ConfigMaps if they exist by providing a comprehensive validation method.Consider enhancing the error messages to provide more context about which part of the ConfigMap validation failed. This can be achieved by wrapping the returned errors. For example:
func validateConfigMap(name string, labels, data map[string]string) error { if err := validateConfigMapName(name); err != nil { return fmt.Errorf("invalid ConfigMap name: %w", err) } if err := validateLabels(labels); err != nil { return fmt.Errorf("invalid ConfigMap labels: %w", err) } if err := validateConfigMapKeys(data); err != nil { return fmt.Errorf("invalid ConfigMap data keys: %w", err) } return nil }This change would require adding
"fmt"to the import list if it's not already present.
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Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (2)
- pkg/k8s/configmap.go (2 hunks)
- pkg/k8s/validate.go (1 hunks)
🔇 Additional comments not posted (4)
pkg/k8s/configmap.go (4)
5-5: LGTM: Import of "errors" packageThe addition of the "errors" package import is appropriate. It's likely used for improved error handling in the new
CreateOrUpdateConfigMapmethod.
Line range hint
95-110: LGTM: Improved code organizationMoving the
prepareConfigMaphelper function to the end of the file is a good practice in Go. It improves readability by keeping the main methods at the top of the file and grouping helper functions together at the bottom.
Line range hint
1-110: Overall assessment: Good changes with minor improvements neededThe changes in this file successfully address the PR objectives by introducing methods to update ConfigMaps if they exist. The new
UpdateConfigMapandCreateOrUpdateConfigMapmethods, along with the modifications toCreateConfigMap, provide a more comprehensive approach to ConfigMap management.Key points:
- The addition of the "errors" import supports improved error handling.
- Centralized validation with
validateConfigMapimproves code maintainability.- The new methods align well with the PR objectives and add valuable functionality.
Areas for improvement:
- Minor issues in error handling logic in both
CreateConfigMapandUpdateConfigMapneed to be addressed.- The
CreateOrUpdateConfigMapmethod could benefit from more robust error handling and consideration of potential race conditions.Once these minor issues are addressed, the changes will significantly enhance the package's functionality and reliability in managing ConfigMaps.
81-94: 🛠️ Refactor suggestionNew CreateOrUpdateConfigMap method: Good addition with room for improvement
The
CreateOrUpdateConfigMapmethod is a valuable addition that aligns well with the PR objectives. It provides a convenient way to ensure a ConfigMap exists with the desired content, handling both update and create scenarios.However, there are a couple of areas where it could be improved:
- Error handling:
The current implementation only checks for
ErrConfigmapDoesNotExist. It would be more robust to handle other potential errors explicitly. Consider updating the error handling as follows:updated, err := c.UpdateConfigMap(ctx, name, labels, data) if err == nil { return updated, nil } if errors.Is(err, ErrConfigmapDoesNotExist) { return c.CreateConfigMap(ctx, name, labels, data) } // Handle other specific errors if needed return nil, fmt.Errorf("failed to create or update ConfigMap: %w", err)
- Potential race condition:
There's a potential race condition where the ConfigMap could be created by another process between the update attempt and the create attempt. While this is a rare scenario, it might be worth considering. You could handle this by catching and handling the "already exists" error from
CreateConfigMap:if errors.Is(err, ErrConfigmapDoesNotExist) { created, createErr := c.CreateConfigMap(ctx, name, labels, data) if createErr == nil { return created, nil } if errors.Is(createErr, ErrConfigmapAlreadyExists) { // If creation failed because it now exists, try updating one more time return c.UpdateConfigMap(ctx, name, labels, data) } return nil, fmt.Errorf("failed to create ConfigMap: %w", createErr) }These changes would make the method more robust and less prone to edge-case errors.
Great point. Thanks for raising it. |
While attempting to upgrade app e2e tests to knuu 0.16.0-rc.0, found out that some of the upgrade tests fail due to existing configmap and the main reason is because we use static names and it is expected to update a resource if it already exists. This PR proposes a change to the configmaps if they already exist which helps the tests pass when an upgrade is happening.
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