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Backport PR #2669 to release/v1.7 for Fix gRPC error handling for gateway/filter handler #2689

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vdaas-ci
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@vdaas-ci vdaas-ci commented Oct 9, 2024

Description

use FromError instead of ParseError

Related Issue

Versions

  • Vald Version: v1.7.13
  • Go Version: v1.23.2
  • Rust Version: v1.81.0
  • Docker Version: v27.3.1
  • Kubernetes Version: v1.31.1
  • Helm Version: v3.16.1
  • NGT Version: v2.2.4
  • Faiss Version: v1.8.0

Checklist

Special notes for your reviewer

Summary by CodeRabbit

  • Bug Fixes

    • Improved error handling across several gRPC methods for more robust reporting.
    • Enhanced consistency in error responses, aiding in traceability.
  • Improvements

    • Adjusted logging for better context during error occurrences, facilitating easier debugging.
    • Streamlined error handling logic by removing redundant checks and paths.

* use FromError

Signed-off-by: Kosuke Morimoto <[email protected]>

* fix

Signed-off-by: Kosuke Morimoto <[email protected]>

* fix

Signed-off-by: Kosuke Morimoto <[email protected]>

---------

Signed-off-by: Kosuke Morimoto <[email protected]>
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Latest commit: 251d6d3
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coderabbitai bot commented Oct 9, 2024

📝 Walkthrough

Walkthrough

The changes in this pull request focus on enhancing error handling and logging within the pkg/gateway/filter/handler/grpc/handler.go file. Key modifications include the transition from status.ParseError to status.FromError for error parsing, improved logging for better context during errors, standardized error wrapping, and general code cleanup. While the method signatures remain unchanged, the internal logic for error handling has been made more consistent across various methods.

Changes

File Path Change Summary
pkg/gateway/filter/handler/grpc/handler.go Enhanced error handling by replacing status.ParseError with status.FromError, improved logging context, standardized error wrapping, and streamlined code for better readability.

Possibly related PRs

Suggested labels

priority/low, size/XL, area/gateway/filter, actions/e2e-deploy, actions/e2e-chaos, actions/e2e-profiling, actions/e2e-max-dim, actions/backport/release/v1.7

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  • hlts2
  • kpango

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vdaas-ci commented Oct 9, 2024

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Actionable comments posted: 2

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between 4b58aa2 and 251d6d3.

📒 Files selected for processing (1)
  • pkg/gateway/filter/handler/grpc/handler.go (32 hunks)
🧰 Additional context used
🔇 Additional comments (3)
pkg/gateway/filter/handler/grpc/handler.go (3)

2016-2019: Ensure Consistent Error Logging in Stream Methods

In the StreamLinearSearchByID and StreamUpsert methods, the error handling for the bidirectional stream correctly records errors and sets span attributes. However, ensure that the error handling is consistent across all stream methods, including checking for span != nil before recording errors to avoid potential nil pointer dereferences.

Also applies to: 2787-2790, 2936-2939


1354-1357: Validate Updated Error Handling in Search Methods

The updated error handling in search-related methods enhances robustness by properly extracting the status from errors and recording them. Ensure that all error cases are appropriately handled and that the status codes accurately reflect the errors encountered.

Also applies to: 1437-1440, 1526-1529, 1573-1576, 1630-1633, 1685-1688, 1945-1948, 1997-2000, 2055-2058, 2110-2113


758-761: Check for Potential Race Conditions in Concurrent Error Handling

In methods using goroutines and errgroup, such as MultiInsertObject, MultiUpdateObject, and MultiUpsertObject, error handling occurs within concurrent executions. Ensure that access to shared variables like errs is properly synchronized to prevent race conditions.

Run the following script to check for race conditions:

Also applies to: 997-1000, 1244-1247, 2354-2357, 2586-2589, 2827-2830, 2975-2978

Comment on lines +239 to +242
st, _ := status.FromError(err)
if st != nil && sspan != nil {
sspan.RecordError(err)
sspan.SetAttributes(trace.FromGRPCStatus(st.Code(), msg)...)
sspan.SetAttributes(trace.FromGRPCStatus(st.Code(), st.Message())...)
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🛠️ Refactor suggestion

Consider Refactoring Repeated Error Handling into a Helper Function

The error handling logic involving status.FromError(err), checking st != nil && span != nil, recording the error, and setting attributes is repeated across multiple methods such as MultiSearchObject, StreamSearchObject, MultiLinearSearchObject, StreamLinearSearchObject, InsertObject, UpdateObject, UpsertObject, and others. This repetition can be refactored into a helper function to reduce code duplication and improve maintainability.

Example of a helper function:

func recordSpanError(span trace.Span, err error) {
    if span != nil {
        st, _ := status.FromError(err)
        if st != nil {
            span.RecordError(err)
            span.SetAttributes(trace.FromGRPCStatus(st.Code(), st.Message())...)
            span.SetStatus(trace.StatusError, err.Error())
        }
    }
}

Usage in your methods:

recordSpanError(span, err)

Also applies to: 285-288, 467-470, 517-520, 699-702, 758-761, 939-942, 997-1000, 1186-1189, 1244-1247, 1354-1357, 1437-1440, 1526-1529, 1573-1576, 1630-1633, 1685-1688, 1945-1948, 1997-2000, 2016-2019, 2055-2058, 2110-2113, 2297-2300, 2354-2357, 2535-2538, 2586-2589, 2768-2771, 2787-2790, 2827-2830, 2917-2920, 2936-2939, 2975-2978, 3163-3166

Comment on lines +699 to +702
st, _ := status.FromError(err)
if st != nil && sspan != nil {
sspan.RecordError(err)
sspan.SetAttributes(trace.FromGRPCStatus(st.Code(), msg)...)
sspan.SetAttributes(trace.FromGRPCStatus(st.Code(), st.Message())...)
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⚠️ Potential issue

Handle Possible Nil Pointer Dereference

In StreamInsertObject, StreamUpdateObject, and StreamUpsertObject, when calling sspan.RecordError(err), ensure that sspan is not nil to prevent possible nil pointer dereferences.

Apply this diff to add a nil check:

 if st != nil && sspan != nil {
     sspan.RecordError(err)
+} else if sspan != nil {
+    sspan.RecordError(err)
 }

Also applies to: 939-942, 1186-1189

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codecov bot commented Oct 9, 2024

Codecov Report

Attention: Patch coverage is 0% with 96 lines in your changes missing coverage. Please review.

Please upload report for BASE (release/v1.7@4b58aa2). Learn more about missing BASE report.

Files with missing lines Patch % Lines
pkg/gateway/filter/handler/grpc/handler.go 0.00% 96 Missing ⚠️
Additional details and impacted files
@@               Coverage Diff               @@
##             release/v1.7    #2689   +/-   ##
===============================================
  Coverage                ?   24.09%           
===============================================
  Files                   ?      539           
  Lines                   ?    46638           
  Branches                ?        0           
===============================================
  Hits                    ?    11239           
  Misses                  ?    34622           
  Partials                ?      777           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

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3 participants