refactor(server/v2): auto-gateway improvements #23262
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Actionable comments posted: 3
🔭 Outside diff range comments (1)
server/v2/api/grpcgateway/uri.go (1)
Line range hint
9-9: Remove unused constantmaxBodySizeThe constant
maxBodySizedeclared at line 9 is unused in the code. Unused constants can clutter the codebase and should be removed for better maintainability.Apply this diff to remove the unused constant:
-const maxBodySize = 1 << 20 // 1 MB
♻️ Duplicate comments (2)
server/v2/api/grpcgateway/uri.go (1)
28-43:⚠️ Potential issuePotential non-determinism in map iteration
Iterating over maps in Go does not guarantee the order of iteration. In the loop over
regexpToQueryMetadata, the order in which regex patterns are matched could be non-deterministic, potentially leading to inconsistent behavior if multiple patterns can match the same URI.Consider converting
regexpToQueryMetadatato a slice of structs containing the regex and metadata, and iterate over it in a deterministic order.server/v2/api/grpcgateway/interceptor.go (1)
219-235:⚠️ Potential issuePotential non-determinism in map iteration
Iterating over the
annotationMappingmap does not guarantee order, which could lead to inconsistent regex pattern matching.Consider converting
annotationMappingto a slice of key-value pairs and iterating over it to ensure deterministic behavior.
🧹 Nitpick comments (7)
server/v2/api/grpcgateway/uri_test.go (2)
5-6: Avoid usingos.Stdoutfor logging in testsUsing
os.Stdoutfor logging in tests can clutter the test output and make it harder to read the results. It is better to discard the logger output or use a testing logger.Apply this diff to use
io.Discard:+ "io" ... - logger := log.NewLogger(os.Stdout) + logger := log.NewLogger(io.Discard)Also applies to: 71-71
77-77: Remove unnecessary error checkThe
errvariable is not modified after the previous check, makingrequire.NoError(t, err)redundant at line 77. This can be safely removed.Apply this diff to remove the redundant error check:
- require.NoError(t, err)server/v2/api/grpcgateway/interceptor.go (1)
91-93: Minimize use ofreflectfor message instantiationUsing
reflectto instantiate messages can lead to performance overhead. Consider using generated constructors or factory methods if available to avoid reflection.server/v2/api/grpcgateway/doc.go (1)
1-11: Enhance package documentation with examples and implementation details.While the documentation provides a good overview, consider adding:
- Example request formats for both POST and GET scenarios
- Details about error handling and status codes
- Documentation about regex pattern construction and performance implications
- Examples of how to use the
x-cosmos-block-heightheaderAdd examples like:
// Example GET request with query parameters: // GET /cosmos/bank/v1beta1/balances/{address}?pagination.limit=10 // // Example POST request with JSON body: // POST /cosmos/bank/v1beta1/send_enabled // { // "denoms": ["atom", "osmo"] // } // // Example request with block height: // GET /cosmos/bank/v1beta1/balances/{address} // x-cosmos-block-height: 1234567server/v2/api/grpcgateway/interceptor_test.go (3)
60-165: Consider adding more edge cases to GET request tests.While the current test coverage is good, consider adding:
- Test case for very long query parameters
- Test case for special characters in wildcards
- Test case for multiple nested pagination levels
- Test case for empty string values
Add test cases like:
{ name: "long query params and special characters", request: func() *http.Request { return httptest.NewRequest( http.MethodGet, "/dummy?foo=" + strings.Repeat("x", 2048) + "&special=!@#$%", nil, ) }, wildcardValues: map[string]string{ "path": "value/with/slashes", }, expected: &DummyProto{...}, wantErr: false, },
167-261: Enhance POST request test coverage.Consider adding test cases for:
- Very large JSON payloads
- Malformed nested structures
- Invalid field types (e.g., string where number expected)
- Unicode characters in strings
Add test cases like:
{ name: "invalid field types", body: map[string]any{ "baz": "not_an_int32", // should be int32 "bar": "not_a_bool", // should be bool }, wantErr: true, errCode: codes.InvalidArgument, },
266-301: Improve test type implementations.The current implementations of
Reset(),String(), andProtoMessage()are minimal. Consider:
- Implementing proper
Reset()to clear all fields- Implementing meaningful
String()for debugging- Adding proper struct field documentation
Example improvements:
func (n Nested) Reset() { - // Empty implementation + n.Foo = 0 } func (n Nested) String() string { - return "" + return fmt.Sprintf("Nested{Foo: %d}", n.Foo) }
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server/v2/api/grpcgateway/doc.go(1 hunks)server/v2/api/grpcgateway/interceptor.go(5 hunks)server/v2/api/grpcgateway/interceptor_test.go(1 hunks)server/v2/api/grpcgateway/uri.go(1 hunks)server/v2/api/grpcgateway/uri_test.go(2 hunks)
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server/v2/api/grpcgateway/doc.go (1)
Pattern **/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
server/v2/api/grpcgateway/uri.go (1)
Pattern **/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
server/v2/api/grpcgateway/uri_test.go (2)
Pattern **/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
Pattern **/*_test.go: "Assess the unit test code assessing sufficient code coverage for the changes associated in the pull request"
server/v2/api/grpcgateway/interceptor.go (1)
Pattern **/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
server/v2/api/grpcgateway/interceptor_test.go (2)
Pattern **/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
Pattern **/*_test.go: "Assess the unit test code assessing sufficient code coverage for the changes associated in the pull request"
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server/v2/api/grpcgateway/uri.go
[error] 9-9: const 'maxBodySize' is unused
🪛 golangci-lint (1.62.2)
server/v2/api/grpcgateway/interceptor.go
103-103: SA4006: this value of err is never used
(staticcheck)
105-105: SA4006: this value of err is never used
(staticcheck)
143-143: comparing with != will fail on wrapped errors. Use errors.Is to check for a specific error
(errorlint)
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🔇 Additional comments (3)
server/v2/api/grpcgateway/uri.go (1)
16-18: Addition ofParamsfield enhances URI matchingThe introduction of the
Paramsfield in theuriMatchstruct improves the handling of wildcard parameters in URIs, making the matching process more robust.server/v2/api/grpcgateway/uri_test.go (1)
84-145: Comprehensive addition ofTest_patternToRegexfunctionThe new
Test_patternToRegexfunction thoroughly tests thepatternToRegexfunction with various cases, ensuring reliability and correctness in URI pattern conversion.server/v2/api/grpcgateway/interceptor_test.go (1)
21-58: Test coverage for regex mapping looks good.The test cases effectively cover:
- Empty annotations
- Different annotations
- Duplicate annotations with warning validation
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Actionable comments posted: 1
🧹 Nitpick comments (3)
server/v2/api/grpcgateway/uri.go (1)
Line range hint
49-71: Optimize regex compilation and enhance documentationThe function uses regex patterns that could be pre-compiled as package-level variables for better performance. Additionally, the function would benefit from more detailed documentation about the supported wildcard patterns.
Consider these improvements:
+// Pre-compiled regex patterns +var ( + catchAllPattern = regexp.MustCompile(`\\\{([^}]+?)=\\\*\\\*\\}`) + wildcardPattern = regexp.MustCompile(`\\\{([^}]+)\\}`) + namePattern = regexp.MustCompile(`\\\{(.+?)=`) +) + +// patternToRegex converts a URI pattern with wildcards to a regex pattern. +// Supports two types of wildcards: +// 1. Catch-all wildcards: {param=**} matches any number of path segments +// 2. Simple wildcards: {param} matches a single path segment +// +// Example: +// - Pattern: "/users/{id}/posts/{post=**}" +// - Matches: "/users/123/posts/2023/comments" +// - Returns: ("^/users/([^/]+)/posts/(.+)$", ["id", "post"]) func patternToRegex(pattern string) (string, []string) {server/v2/api/grpcgateway/interceptor.go (2)
Line range hint
76-141: Consider breaking down the large method into smaller functionsThe ServeHTTP method is quite long and handles multiple responsibilities. Consider extracting the message creation and response handling logic into separate methods for better maintainability.
Consider breaking it down into:
- handleGetRequest
- handlePostRequest
- handleResponse
Example for handleResponse:
func (g *gatewayInterceptor[T]) handleResponse(ctx context.Context, writer http.ResponseWriter, request *http.Request, responseMsg gogoproto.Message, err error) { if err != nil { if strings.Contains(err.Error(), "no handler") { g.gateway.ServeHTTP(writer, request) } else { runtime.DefaultHTTPProtoErrorHandler(ctx, g.gateway, out, writer, request, err) } return } runtime.ForwardResponseMessage(ctx, g.gateway, out, writer, request, responseMsg) }
222-243: Consider stricter handling of duplicate patternsWhile the current implementation logs a warning for duplicate patterns (referencing issue #23281), consider maintaining a list of known/allowed duplicates to distinguish between expected and unexpected duplicates.
Example implementation:
+var allowedDuplicatePatterns = map[string]struct{}{ + "/cosmos/bank/v1beta1/balances/{address}": {}, // Known duplicate from issue #23281 +} func createRegexMapping(logger log.Logger, annotationMapping map[string]string) map[*regexp.Regexp]queryMetadata { // ... if otherAnnotation, ok := seenPatterns[pattern]; !ok { seenPatterns[pattern] = annotation } else { + if _, allowed := allowedDuplicatePatterns[annotation]; !allowed { logger.Warn("duplicate HTTP annotation found", "annotation1", annotation, "annotation2", otherAnnotation, "query_input_name", queryInputName) + } } // ... }
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server/v2/api/grpcgateway/uri.go (1)
Pattern **/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
server/v2/api/grpcgateway/interceptor.go (1)
Pattern **/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
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🔇 Additional comments (3)
server/v2/api/grpcgateway/uri.go (1)
22-46: Consider using a deterministic iteration orderThe function iterates over a map using a range loop, which could lead to non-deterministic behavior as map iteration order is random in Go.
Consider using one of these approaches:
- Sort the regular expressions by pattern string
- Use a slice of struct{pattern *regexp.Regexp; metadata queryMetadata} sorted by pattern
-func matchURL(u *url.URL, regexpToQueryMetadata map[*regexp.Regexp]queryMetadata) *uriMatch { +type regexEntry struct { + pattern *regexp.Regexp + metadata queryMetadata +} + +func matchURL(u *url.URL, regexpToQueryMetadata map[*regexp.Regexp]queryMetadata) *uriMatch { uriPath := strings.TrimRight(u.Path, "/") params := make(map[string]string) + + // Create a sorted slice of entries + entries := make([]regexEntry, 0, len(regexpToQueryMetadata)) + for pattern, metadata := range regexpToQueryMetadata { + entries = append(entries, regexEntry{pattern: pattern, metadata: metadata}) + } + sort.Slice(entries, func(i, j int) bool { + return entries[i].pattern.String() < entries[j].pattern.String() + })server/v2/api/grpcgateway/interceptor.go (2)
30-38: LGTM! Well-structured and documented type definitionThe queryMetadata struct is well-designed with clear documentation for each field.
174-176: Clarify or remove the TODO comment about filter usageThe comment about the filter's purpose is unclear and seems to be copied from generated code. Either document its purpose clearly or consider if it's actually needed.
Let's check the grpc-gateway source code to understand the filter's purpose:
technicallyty
changed the title
| @@ -41,57 +57,77 @@ func newGatewayInterceptor[T transaction.Tx](logger log.Logger, gateway *runtime | |||
| if err != nil { | |||
| return nil, err | |||
| } | |||
| // convert the mapping to regular expressions for URL matching. | |||
| wildcardMatchers, simpleMatchers := createRegexMapping(logger, getMapping) | |||
| if err != nil { | |||
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oops, thanks - removed it in remove unncessary error check
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Actionable comments posted: 0
🧹 Nitpick comments (3)
server/v2/api/grpcgateway/uri.go (1)
Line range hint
65-92: Consider optimizing regex handling.The function effectively converts URI patterns to regex patterns, but could be improved:
- Consider extracting regex patterns as constants for better maintainability.
- Consider compiling the regex patterns once at init time for better performance.
Apply this diff to optimize the implementation:
+var ( + paramStarPattern = regexp.MustCompile(`\\\{([^}]+?)=\\\*\\\*\\}`) + paramNameStarPattern = regexp.MustCompile(`\\\{(.+?)=`) + paramPattern = regexp.MustCompile(`\\\{([^}]+)\\}`) + paramNamePattern = regexp.MustCompile(`\\\{(.*?)\\}`) +) func patternToRegex(pattern string) (string, []string) { escaped := regexp.QuoteMeta(pattern) var wildcardNames []string - r1 := regexp.MustCompile(`\\\{([^}]+?)=\\\*\\\*\\}`) - escaped = r1.ReplaceAllStringFunc(escaped, func(match string) string { - name := regexp.MustCompile(`\\\{(.+?)=`).FindStringSubmatch(match)[1] + escaped = paramStarPattern.ReplaceAllStringFunc(escaped, func(match string) string { + name := paramNameStarPattern.FindStringSubmatch(match)[1] wildcardNames = append(wildcardNames, name) return "(.+)" }) - r2 := regexp.MustCompile(`\\\{([^}]+)\\}`) - escaped = r2.ReplaceAllStringFunc(escaped, func(match string) string { - name := regexp.MustCompile(`\\\{(.*?)\\}`).FindStringSubmatch(match)[1] + escaped = paramPattern.ReplaceAllStringFunc(escaped, func(match string) string { + name := paramNamePattern.FindStringSubmatch(match)[1] wildcardNames = append(wildcardNames, name) return "([^/]+)" })server/v2/api/grpcgateway/uri_test.go (1)
107-171: Consider adding test cases for invalid patterns.While the current test cases are good, consider adding test cases for:
- Invalid wildcard syntax (e.g., unclosed braces)
- Empty wildcard names
- Duplicate wildcard names in the same pattern
server/v2/api/grpcgateway/interceptor_test.go (1)
76-181: Consider adding test cases for query parameter size limits.While the test coverage is good, consider adding test cases for:
- Query parameters exceeding size limits
- Maximum number of query parameters
- Query parameters with special characters
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server/v2/api/grpcgateway/interceptor_test.go (2)
Pattern **/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
Pattern **/*_test.go: "Assess the unit test code assessing sufficient code coverage for the changes associated in the pull request"
server/v2/api/grpcgateway/uri_test.go (2)
Pattern **/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
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server/v2/api/grpcgateway/interceptor.go (1)
Pattern **/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
server/v2/api/grpcgateway/uri.go (1)
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🔇 Additional comments (9)
server/v2/api/grpcgateway/uri.go (2)
9-15: Well-structured type definition with clear documentation!The separation of simple and wildcard matchers is a good design choice that optimizes performance by using O(1) lookups for simple URIs.
30-63: Excellent implementation of URL matching logic!The method effectively handles both simple and wildcard matches, with proper prioritization of simple matches. This implementation successfully addresses the previous concern about differentiating URIs like
blocks/latestandblocks/{height}.server/v2/api/grpcgateway/uri_test.go (1)
Line range hint
14-105: Comprehensive test coverage with well-documented test cases!The test suite effectively covers various URI matching scenarios including simple matches, wildcard matches, and edge cases.
server/v2/api/grpcgateway/interceptor_test.go (2)
21-74: Well-structured test cases with proper log output verification!The test effectively verifies regex mapping creation and duplicate annotation detection.
183-277: Excellent test coverage for POST request handling!The test cases effectively cover various scenarios including valid JSON, invalid JSON, and empty bodies.
server/v2/api/grpcgateway/interceptor.go (4)
28-40: Well-defined constants and types with clear documentation!The
MaxBodySizeconstant andqueryMetadatatype are well-structured and properly documented.
Line range hint
74-141: Add error handling for message creation.The error checks for
createMessageFromGetRequestandcreateMessageFromPostRequestare missing.Apply this diff to add proper error handling:
switch request.Method { case http.MethodGet: inputMsg, err = g.createMessageFromGetRequest(request.Context(), in, request, msg, match.Params) + if err != nil { + runtime.DefaultHTTPProtoErrorHandler(request.Context(), g.gateway, out, writer, request, err) + return + } case http.MethodPost: inputMsg, err = g.createMessageFromPostRequest(request.Context(), in, request, msg) + if err != nil { + runtime.DefaultHTTPProtoErrorHandler(request.Context(), g.gateway, out, writer, request, err) + return + }
143-185: Well-implemented message creation with proper size limits!The methods effectively handle message creation with appropriate error handling and size limits.
225-263: Consider deterministic map iteration.Map iteration in Go is non-deterministic by design, which could lead to inconsistent behavior.
Run this script to check for map iteration patterns in the codebase:
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🧹 Nitpick comments (1)
tests/systemtests/distribution_test.go (1)
182-182: LGTM! Consider adding a comment explaining the placeholder usage.The consolidation of error messages improves maintainability. Consider adding a comment explaining that "NUMBER" is a placeholder replaced during testing.
+// invalidHeightOutput represents the expected error message format for invalid height values +// where "NUMBER" serves as a placeholder for the actual invalid value invalidHeightOutput := `"code":"NUMBER", "details":[]interface {}{}, "message":"strconv.ParseUint: parsing \"NUMBER\": invalid syntax"`
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tests/systemtests/distribution_test.go (1)
189-189: LGTM! Test cases properly validate error handling.The test cases effectively cover invalid height scenarios using the consolidated error message format.
To ensure comprehensive error handling coverage, verify that all similar height validation endpoints use consistent error messages:
Also applies to: 195-195
✅ Verification successful
Test properly validates height parsing errors using Go's standard error format
The test case correctly uses Go's standard
strconv.ParseUinterror message for invalid height values, which is appropriate for number parsing validation. No changes needed.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for other height validation test cases to ensure consistent error handling rg -A 3 'starting_height|ending_height' 'tests/systemtests/**/*_test.go'Length of output: 145
Script:
#!/bin/bash # First, find all Go test files fd "_test\.go$" --type f # Then search for height-related patterns and error messages rg -U "(?s)func.*Test.*Height.*\{.*\}" --type go rg "invalid.*height" --type goLength of output: 86328
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#!/bin/bash # Search for invalidHeightOutput variable definition rg -A 2 "invalidHeightOutput.*=" tests/systemtests/Length of output: 351
julienrbrt
added
the
backport/v0.52.x
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Adding backport label for the system tests backport |
| return input, nil | ||
| } | ||
|
|
||
| func (g *gatewayInterceptor[T]) createMessageFromGetRequest(_ context.Context, _ runtime.Marshaler, req *http.Request, input gogoproto.Message, wildcardValues map[string]string) (gogoproto.Message, error) { |
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do we need the context.Context argument for these create* functions?
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removed in updated create message function arguments
| // im not really sure what this filter is for, but defaulting it like so doesn't seem to break anything. | ||
| // pb.gw.go code uses it in a few queries, but it's not clear what actual behavior is gained from this. |
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I think we should either remove this comment/logic or find the real reason we are including this code. Let's not add code we don't understand
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whoops, forgot to get back to that one. updated in construct filter value
…ub.com/cosmos/cosmos-sdk into technicallyty/23188-gateway-improvements
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Actionable comments posted: 1
🧹 Nitpick comments (6)
server/v2/api/grpcgateway/interceptor_test.go (4)
20-73: Enhance test coverage with additional test cases.Consider adding the following test scenarios:
- Invalid regex patterns in annotations
- Empty annotation strings
- Overlapping patterns that could cause ambiguous matches
75-178: Add test cases for edge cases in GET request handling.Consider adding test cases for:
- URL-encoded parameters with special characters
- Multiple occurrences of the same query parameter
- Nested query parameters with type mismatches
180-273: Extend POST request test coverage.Add test cases to verify:
- Request body size limit enforcement
- Content-type header validation
- JSON with valid syntax but invalid field types
- Large nested JSON structures approaching size limits
278-313: Improve test type implementations.The proto.Message interface implementations could be more realistic:
String()methods should return meaningful string representationsReset()methods should properly reset all fields to zero valuesserver/v2/api/grpcgateway/interceptor.go (2)
108-112: Enhance error messages in error handling.Consider providing more descriptive error messages that include:
- The specific validation that failed
- The expected format or constraints
- The actual value that caused the error
142-156: Add Content-Type validation and improve error messages.
- Add Content-Type validation to ensure only supported content types are accepted
- Include the content type in error messages when validation fails
- Enhance the size limit error message to suggest breaking down large requests
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server/v2/api/grpcgateway/interceptor.go (1)
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Co-authored-by: Alex | Interchain Labs <[email protected]> (cherry picked from commit b461a31) # Conflicts: # server/v2/api/grpcgateway/interceptor.go # server/v2/api/grpcgateway/server.go # server/v2/api/grpcgateway/uri.go # server/v2/api/grpcgateway/uri_test.go
…23356) Co-authored-by: Tyler <[email protected]> Co-authored-by: Julien Robert <[email protected]>
Description
ref: #23188
matcherto handle URI matching logic, and hold the data required for matching.Author Checklist
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