Added error to record.GetByIndex for safe access #37
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WalkthroughThe changes introduce explicit error handling and type safety in record value retrieval throughout the codebase. The Changes
Sequence Diagram(s)sequenceDiagram
participant Test as Test Function
participant Record as Record
participant Error as ErrRecordNoValue
Test->>Record: GetByIndex(index)
alt Record is nil
Record-->>Test: (nil, ErrRecordNoValue)
else Index out of range
Record-->>Test: (nil, ErrRecordNoValue)
else Valid index
Record-->>Test: (value, nil)
end
Test->>Test: Check error before type assertion
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~18 minutes Poem
Note ⚡️ Unit Test Generation is now available in beta!Learn more here, or try it out under "Finishing Touches" below. 📜 Recent review detailsConfiguration used: CodeRabbit UI 📒 Files selected for processing (4)
🚧 Files skipped from review as they are similar to previous changes (3)
🧰 Additional context used🧬 Code Graph Analysis (1)examples/falkordb_tls_client/falkordb_tls_client.go (1)
🔇 Additional comments (1)
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Actionable comments posted: 5
🧹 Nitpick comments (6)
record.go (1)
45-55: Excellent error handling implementation with minor consistency suggestion.The new error-aware signature significantly improves safety by preventing panics. The implementation correctly handles both nil receivers and out-of-bounds access.
Consider making error handling consistent - either wrap both errors or use direct errors for both cases:
func (r *Record) GetByIndex(index int) (interface{}, error) { if r == nil { - return nil, fmt.Errorf("record is nil: %w", ErrRecordNoValue) + return nil, ErrRecordNoValue } if index >= len(r.values) { return nil, ErrRecordNoValue }graph_schema.go (3)
38-44: Good error handling, but consider safer type assertions.The error handling for
GetByIndexis correctly implemented. However, the type assertionlabel.(string)could still panic if the interface{} doesn't contain a string.Consider using safer type assertions:
label, err := r.GetByIndex(0) if err != nil { return err } - gs.labels[idx] = label.(string) + labelStr, ok := label.(string) + if !ok { + return fmt.Errorf("expected string, got %T", label) + } + gs.labels[idx] = labelStr
57-62: Same type assertion safety concern applies here.Good error handling for
GetByIndex, but consider safer type assertions as mentioned in the previous comment.
75-80: Same type assertion safety concern applies here.Good error handling for
GetByIndex, but consider safer type assertions as mentioned in the previous comments.record_test.go (1)
10-16: Good test for nil receiver, but improve the assertion.The nil receiver test is important and correctly uses
errors.Is(). However, the assertion pattern could be simplified:func TestRecord_GetByIndex_WhenNil(t *testing.T) { var record *Record _, err := record.GetByIndex(-1) - if !errors.Is(err, ErrRecordNoValue) { - assert.FailNow(t, err.Error()) - } + assert.ErrorIs(t, err, ErrRecordNoValue) }client_test.go (1)
332-334: Missing safe type assertion in TestPoint.The error handling is good, but the type assertion on line 334 should be safe to maintain consistency with the rest of the codebase.
- point := pointIface.(map[string]interface{}) + point, ok := pointIface.(map[string]interface{}) + assert.True(t, ok, "Expected point to be a map[string]interface{}")
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📒 Files selected for processing (6)
client_test.go(13 hunks)error.go(1 hunks)example_graph_test.go(3 hunks)graph_schema.go(3 hunks)record.go(2 hunks)record_test.go(1 hunks)
🧰 Additional context used
🧬 Code Graph Analysis (4)
record.go (1)
error.go (1)
ErrRecordNoValue(6-6)
client_test.go (5)
error.go (1)
ErrRecordNoValue(6-6)node.go (1)
Node(9-15)edge.go (1)
Edge(9-18)path.go (1)
Path(8-11)record.go (1)
Record(5-8)
record_test.go (2)
record.go (1)
Record(5-8)error.go (1)
ErrRecordNoValue(6-6)
example_graph_test.go (1)
node.go (1)
Node(9-15)
🔇 Additional comments (6)
error.go (1)
5-7: LGTM! Clean error definition following Go conventions.The error variable follows standard Go naming patterns and uses the appropriate
errors.New()function.record.go (1)
20-23: LGTM! Good defensive programming with nil safety.Adding nil checks to
Keys()andValues()methods prevents potential panics.client_test.go (4)
4-4: Good addition of fmt import for error handling.The addition of the
fmtpackage supports proper error formatting in the updated error handling code.
184-196: Excellent comprehensive error handling pattern.This section demonstrates the ideal error handling pattern for the updated
GetByIndexmethod:
- Explicit error checking with descriptive messages
- Safe type assertion with boolean check
- Proper error reporting with context
This pattern should be the standard approach throughout the codebase.
348-351: Excellent error handling and type safety.This section demonstrates the complete pattern: error checking, safe type assertion with boolean validation. This is the gold standard for the updated codebase.
66-525: Overall excellent adaptation to the new error-handling GetByIndex method.The test file has been successfully updated to handle the new
GetByIndexmethod signature that returns(interface{}, error). The changes demonstrate:✅ Consistent error checking patterns
✅ Safe type assertions with boolean checks
✅ Descriptive error messages
✅ Alignment with PR objectives to prevent panicsThe few minor inconsistencies noted in other comments should be addressed for complete consistency across the test suite.
1 participant
Hey! First time contributor.
I was using this library to interact with a some example code within the documentation at (https://docs.falkordb.com/getting-started.html). Noting that Go is not one of the languages listed in these examples. I found that I was able to create panics while reading from values.
I intended to add memory save access to the Record access, and have added an
ErrNoValuetoerrors.goand testing for therecord.gofile.Summary by CodeRabbit
New Features
Bug Fixes
Tests
Documentation