Add Utility Functions for URL Manipulation and Query Parameter Handling #40
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WalkthroughThe changes introduce a new package named Changes
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Actionable comments posted: 11
🧹 Outside diff range and nitpick comments (5)
url/url_test.go (1)
1-3: Enhance package documentation.The current package documentation is too brief. Consider adding:
- A detailed description of the package's purpose
- List of available functions with their descriptions
- Usage examples for common scenarios
Example improvement:
/* -Package url defines url utilities helpers. +Package url provides utility functions for URL manipulation and validation. + +Available functions: + - BuildURL: Constructs a URL from scheme, host, path, and query parameters + - AddQueryParams: Adds query parameters to an existing URL + - IsValidURL: Validates a URL string against allowed schemes + - ExtractDomainWithSubdomain: Extracts domain with subdomain from a URL + - ExtractDomain: Extracts the main domain from a URL + - GetQueryParam: Retrieves a specific query parameter value + +Example Usage: + url, _ := BuildURL("https", "example.com", "/path", map[string]string{"key": "value"}) + // Returns: "https://example.com/path?key=value" */url/url.go (4)
1-3: Enhance package documentationThe current package documentation is too brief. Consider adding more details about:
- The package's primary purpose
- Common use cases
- Any assumptions or limitations
- Examples of how the package fits into larger applications
/* -Package url defines url utilities helpers. +Package url provides utilities for URL manipulation, including functions for +building URLs, managing query parameters, validating URLs, and extracting +domain information. It wraps Go's net/url package to provide higher-level +operations commonly needed in web applications. + +Common use cases include: +- Constructing URLs with query parameters +- Validating URLs against allowed schemes +- Extracting domain information from URLs +- Managing query parameters in existing URLs */
164-183: Simplify URL validation logicThe function can be simplified by:
- Using a map for O(1) scheme lookup instead of O(n) slice iteration
- Simplifying the return statement as suggested by static analysis
+// allowedSchemes is initialized once and reused +var defaultAllowedSchemes = map[string]bool{ + "http": true, + "https": true, +} func IsValidURL(urlStr string, allowedReqSchemes []string) bool { parsedURL, err := url.Parse(urlStr) if err != nil { return false } - allowedSchemes := false - for _, scheme := range allowedReqSchemes { - if parsedURL.Scheme == scheme { - allowedSchemes = true - break - } - } - - if !allowedSchemes { - return false + // Convert slice to map for O(1) lookup + allowedSchemes := make(map[string]bool, len(allowedReqSchemes)) + for _, scheme := range allowedReqSchemes { + allowedSchemes[scheme] = true } - return true + return allowedSchemes[parsedURL.Scheme] }🧰 Tools
🪛 golangci-lint
178-178: S1008: should use 'return allowedSchemes' instead of 'if !allowedSchemes { return false }; return true'
(gosimple)
287-300: Add consistent edge case handlingFor consistency with
ExtractDomainWithSubdomain, consider handling special cases like IP addresses and localhost similarly.func ExtractDomain(urlStr string) (string, error) { parsedURL, err := url.ParseRequestURI(urlStr) if err != nil { return "", err } host := parsedURL.Hostname() if host == "" { return "", errors.New("parameter not found") } + // Handle special cases consistently with ExtractDomainWithSubdomain + if net.ParseIP(host) != nil { + return "", errors.New("IP addresses not supported") + } + if host == "localhost" { + return host, nil + } + return host, nil }
1-351: Consider adding comprehensive test coverageWhile the implementation looks solid, consider adding:
- Table-driven tests for each function
- Edge case testing (empty strings, malformed URLs, etc.)
- Benchmark tests for performance-critical functions
- Examples that can be verified by
go testWould you like me to help generate a comprehensive test suite for this package?
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178-178: S1008: should use 'return allowedSchemes' instead of 'if !allowedSchemes { return false }; return true'
(gosimple)
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url/url.go(1 hunks)url/url_test.go(1 hunks)
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url/url.go
178-178: S1008: should use 'return allowedSchemes' instead of 'if !allowedSchemes { return false }; return true'
(gosimple)
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Actionable comments posted: 3
🧹 Outside diff range and nitpick comments (6)
go.mod (1)
3-3: Consider updating the Go version requirementThe module currently uses Go 1.18, which is quite old. Consider upgrading to a newer version (current is 1.21) to benefit from:
- Performance improvements
- Better security features
- New language features that could help with URL manipulation
- Better compatibility with recent versions of dependencies
url/url.go (3)
1-3: Enhance package documentationConsider expanding the package documentation to include:
- Main purpose and use cases
- Common usage patterns
- Any assumptions or limitations
/* -Package url defines url utilities helpers. +Package url provides utilities for URL manipulation, including construction, +validation, and parameter handling. It supports common operations such as: + - Building URLs with query parameters + - Validating URLs against allowed schemes + - Extracting domains and query parameters + - Adding query parameters to existing URLs + +The package ensures proper URL encoding and validation while handling +common edge cases and security concerns. */
66-67: Use raw strings for regular expressionsUsing raw strings for regular expressions improves readability and reduces escape character complexity.
- re := regexp.MustCompile("^[a-zA-Z0-9-]+(\\.[a-zA-Z0-9-]+)+$") + re := regexp.MustCompile(`^[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)+$`) - re := regexp.MustCompile("^[a-zA-Z]+(\\/[a-zA-Z]+)*$") + re := regexp.MustCompile(`^[a-zA-Z]+(/[a-zA-Z]+)*$`)Also applies to: 76-77
🧰 Tools
🪛 golangci-lint
66-66: S1007: should use raw string (
...) with regexp.MustCompile to avoid having to escape twice(gosimple)
89-91: Standardize error handling patternsError handling is inconsistent across functions. Some wrap the original error while others create new ones. Consider standardizing the approach:
parsedUrl, err := url.Parse(urlMounted) if err != nil { - return "", errors.New("URL could not be parsed") + return "", fmt.Errorf("failed to parse URL: %w", err) } parsedURL, err := url.Parse(urlStr) if err != nil { - return "", errors.New("URL could not be parsed") + return "", fmt.Errorf("failed to parse URL: %w", err) } parsedURL, err := url.Parse(urlStr) if err != nil { - return "", errors.New("URL could not be parsed") + return "", fmt.Errorf("failed to parse URL: %w", err) } parsedURL, err := url.Parse(urlStr) if err != nil { - return "", err + return "", fmt.Errorf("failed to parse URL: %w", err) }Also applies to: 144-147, 274-276, 327-329
url/url_test.go (2)
196-241: Clarify test case names inTestIsValidURLSome test case names in
TestIsValidURLare prefixed with "success - is valid URL" but expectfalseas the result, indicating that the URL is invalid. For clarity and maintainability, consider updating the test case names to accurately reflect whether the URL is expected to be valid or invalid.For example:
- Change
"success - is valid URL"to"failure - invalid scheme"whenwantisfalsedue to an invalid scheme.- Use descriptive names like
"failure - empty URL string"or"failure - missing scheme".
397-422: RenameTestGetQueryParamErrorand its test cases for clarityThe test function
TestGetQueryParamErrorcontains a test case named"success - get query param with error", which is misleading. Since this function is intended to test error scenarios, consider:
- Renaming the test function to
TestGetQueryParam_Errorsto reflect that it focuses on error cases.- Updating the test case name to something like
"error - parameter not found"to clearly indicate the purpose of the test.This improves readability and helps other developers quickly understand the intent of the tests.
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go.sumis excluded by!**/*.sum
📒 Files selected for processing (3)
go.mod(1 hunks)url/url.go(1 hunks)url/url_test.go(1 hunks)
🧰 Additional context used
🪛 golangci-lint
url/url.go
66-66: S1007: should use raw string (...) with regexp.MustCompile to avoid having to escape twice
(gosimple)
76-76: S1007: should use raw string (...) with regexp.MustCompile to avoid having to escape twice
(gosimple)
149-149: S1007: should use raw string (...) with regexp.MustCompile to avoid having to escape twice
(gosimple)
231-231: S1008: should use 'return allowedSchemes' instead of 'if !allowedSchemes { return false }; return true'
(gosimple)
🔇 Additional comments (4)
go.mod (2)
7-7: Verify the indirect dependency requirement
The addition of golang.org/x/net seems appropriate for URL manipulation functionality. However, since it's marked as indirect, verify if it should be a direct dependency instead, given that the PR adds URL-related utilities.
#!/bin/bash
# Description: Check if golang.org/x/net is used directly in the codebase
# Search for direct imports of net package
rg -l 'import.*"golang.org/x/net'
# Search for URL-related code that might need direct net package usage
ast-grep --pattern 'import ($$$"net/url"$$$)'5-5: Verify compatibility with the major version upgrade of golang.org/x/text
The upgrade from v0.14.0 to v0.20.0 is significant. Please ensure there are no breaking changes that could affect existing functionality.
✅ Verification successful
The previous attempt didn't provide the changelog information and had a syntax error. Let's try a different approach to get the release information:
Based on the results, I can now generate a final response. The search results show that:
- Only
strings/strings.gouses thegolang.org/x/textpackage, specifically forcasesandlanguagepackages - The usage is minimal and focused on text case manipulation
- The actual implementation shows no complex usage that would be prone to breaking changes
The golang.org/x/text upgrade appears safe for this codebase
The codebase has very limited usage of golang.org/x/text, only using basic case conversion functionality in strings/strings.go through the cases and language packages. These are stable APIs that rarely introduce breaking changes. The upgrade should be safe as:
- Usage is minimal and focused on core functionality
- Only one file depends on this package
- The used packages (
casesandlanguage) are fundamental packages with stable APIs
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check for breaking changes in golang.org/x/text upgrade
# Get the changelog or release notes
gh api repos/golang/text/releases | jq -r '.[] | select(.tag_name | contains("v0.")) | select(.tag_name >= "v0.14.0" and .tag_name <= "v0.20.0") | "\(.tag_name)\n\(.body)\n"'
# Check for usage of potentially affected packages
rg -l "text\."
Length of output: 2829
Script:
#!/bin/bash
# Let's check for specific usage of golang.org/x/text packages
rg -l "golang.org/x/text"
# Check actual usage of text package functions
rg "text\." -A 2 -B 2
Length of output: 3044
Script:
#!/bin/bash
# Try to get releases information with a simpler query
gh api repos/golang/text/releases/latest
# Also check the current version in go.mod for confirmation
rg "golang.org/x/text" go.mod
Length of output: 1890
url/url.go (2)
272-288: LGTM! Well-implemented domain extraction
The implementation is efficient and handles domain extraction correctly using the publicsuffix package.
325-339: LGTM! Well-implemented query parameter retrieval
The implementation correctly handles parameter existence and empty value cases.
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Actionable comments posted: 6
🧹 Outside diff range and nitpick comments (3)
url/url.go (1)
1-12: Consider adding package-level constants for regex patternsTo improve maintainability and reusability, consider extracting commonly used regex patterns into package-level constants.
Example implementation:
+// Common regex patterns used across the package +var ( + hostPattern = regexp.MustCompile(`^([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])(\.[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])*$`) + pathPattern = regexp.MustCompile(`^[\w-]+(?:\/[\w-]+)*$`) + paramPattern = regexp.MustCompile(`^[a-zA-Z0-9-]+$`) +)url/url_test.go (2)
1-4: Add more comprehensive package documentation.The current package documentation is too brief. Consider adding:
- Purpose and scope of the package
- Examples of common use cases
- Links to related packages or documentation
/* -Package url defines url utilities helpers. +Package url provides utilities for URL manipulation and validation. + +It offers functions for: +- Building URLs with query parameters +- Adding query parameters to existing URLs +- Validating URLs against allowed schemes +- Extracting domains from URLs +- Retrieving specific query parameters */
1-417: Add test coverage for edge cases across all test functions.While the test coverage is good, there are missing edge cases:
- URLs with fragments (#)
- URLs with authentication (user:pass@)
- URLs with non-ASCII characters in paths
- URLs with repeated query parameters
- URLs with special characters in query values
- URLs with IPv4/IPv6 hosts
Would you like me to provide example test cases for these scenarios?
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⛔ Files ignored due to path filters (1)
go.sumis excluded by!**/*.sum
📒 Files selected for processing (3)
go.mod(1 hunks)url/url.go(1 hunks)url/url_test.go(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- go.mod
🧰 Additional context used
🪛 golangci-lint
url/url.go
66-66: S1007: should use raw string (...) with regexp.MustCompile to avoid having to escape twice
(gosimple)
76-76: S1007: should use raw string (...) with regexp.MustCompile to avoid having to escape twice
(gosimple)
154-154: S1007: should use raw string (...) with regexp.MustCompile to avoid having to escape twice
(gosimple)
🔇 Additional comments (4)
url/url.go (4)
148-170: Previous review comments are still applicable
The existing review comments about optimizing query parameter processing and improving URL validation are still valid for this function.
🧰 Tools
🪛 golangci-lint
154-154: S1007: should use raw string (...) with regexp.MustCompile to avoid having to escape twice
(gosimple)
206-223: Implementation looks good!
The function is well-implemented with proper error handling and scheme validation.
259-275: Excellent implementation using publicsuffix!
The function makes good use of the publicsuffix package for reliable domain extraction and includes proper error handling.
312-326: Clean implementation with proper error handling!
The function correctly handles parameter existence checks and returns appropriate errors.
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🧹 Outside diff range and nitpick comments (4)
url/url.go (2)
1-3: Enhance package documentationThe current package documentation is too brief. Consider adding more details about the package's purpose, main features, and usage examples.
/* -Package url defines url utilities helpers. +Package url provides utilities for URL manipulation, including functions for: +- Building and validating URLs +- Managing query parameters +- Extracting domains +- Supporting various URL schemes (http, https, ws, wss, ftp) + +This package is designed to simplify common URL-related operations while ensuring +proper validation and encoding of URL components. */
204-221: Optimize validation orderConsider checking scheme validity before attempting to parse the URL for better performance.
func IsValidURL(urlStr string, allowedReqSchemes []string) bool { if urlStr == "" { return false } + + // Check if URL starts with an allowed scheme + for _, scheme := range allowedReqSchemes { + if scheme == "" { + return false + } + if strings.HasPrefix(urlStr, scheme+"://") { + break + } + // If we've checked all schemes and none match, return false + if scheme == allowedReqSchemes[len(allowedReqSchemes)-1] { + return false + } + } + parsedURL, err := url.Parse(urlStr) if err != nil { return false } - for _, scheme := range allowedReqSchemes { - if scheme == "" { - return false - } - if parsedURL.Scheme == scheme { - return true - } - } - return false + return trueurl/url_test.go (2)
1-4: Enhance package documentation with more details.The current documentation is too brief. Consider adding:
- Purpose and main features of the package
- Examples of common use cases
- List of available functions and their purposes
/* -Package url defines url utilities helpers. +Package url provides utilities for URL manipulation and validation. + +It offers functions for: +- Building URLs with query parameters +- Adding query parameters to existing URLs +- Validating URLs against allowed schemes +- Extracting domains from URLs +- Retrieving specific query parameters + +Example usage: + url, _ := BuildURL("https", "example.com", "path", map[string]string{"key": "value"}) + // Returns: https://example.com/path?key=value */
73-73: Fix grammatical error in error message.The error message is grammatically incorrect and unclear.
- want: "path is permitted with a-z character and multiple path segments", + want: "path must contain only a-z characters and can include multiple path segments",
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📒 Files selected for processing (3)
go.mod(1 hunks)url/url.go(1 hunks)url/url_test.go(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- go.mod
🧰 Additional context used
🪛 golangci-lint
url/url.go
66-66: S1007: should use raw string (...) with regexp.MustCompile to avoid having to escape twice
(gosimple)
76-76: S1007: should use raw string (...) with regexp.MustCompile to avoid having to escape twice
(gosimple)
🔇 Additional comments (6)
url/url.go (4)
86-103: LGTM! Efficient URL construction implementation
The implementation correctly uses the url.URL struct for URL construction and handles query parameters efficiently.
153-157: LGTM! Good URL scheme validation
The switch statement provides a clean and efficient way to validate URL schemes.
257-273: LGTM! Robust domain extraction implementation
The function correctly uses the publicsuffix package for reliable domain extraction and provides clear error messages.
310-324: LGTM! Proper parameter existence check
The implementation correctly distinguishes between missing parameters and empty values.
url/url_test.go (2)
8-45: Past review comments are still applicable.
The existing review comments about improving test case names, adding more scenarios, and fixing error handling are still valid.
387-412: Past review comments are still applicable.
The existing review comment about refactoring this function to follow the table-driven test pattern and fixing the test name is still valid.
Enhance test coverage for AddQueryParams Add comprehensive test cases for URL validation Expand test coverage for domain extraction Refactor test cases to remove redundancy and add edge cases Improve empty parameter value handling
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Actionable comments posted: 4
🧹 Outside diff range and nitpick comments (6)
url/url.go (5)
1-3: Enhance package documentationConsider adding more comprehensive package documentation that includes:
- Overview of the package's purpose
- Common use cases
- List of available functions
- Any assumptions or limitations
/* -Package url defines url utilities helpers. +Package url provides utilities for URL manipulation and validation. + +This package offers a set of functions to: + - Construct and validate URLs + - Add and retrieve query parameters + - Extract domains from URLs + - Validate URL schemes + +The utilities ensure proper URL encoding and handle common edge cases +while maintaining RFC compliance. */
61-84: Improve error message consistency and validationThe error handling could be improved in several ways:
- Error messages should be consistent in format (some use "is required" while others use different formats)
- Query parameters should be validated before URL construction
func BuildURL(scheme, host, path string, query map[string]string) (string, error) { var errMessage []string if scheme == "" { - errMessage = append(errMessage, "scheme is required") + errMessage = append(errMessage, "scheme: required") } if host != "" { re := regexp.MustCompile(`^([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])(\.[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])*$`) if !re.MatchString(host) { - errMessage = append(errMessage, "the host is not valid") + errMessage = append(errMessage, "host: invalid format") } } if host == "" { - errMessage = append(errMessage, "host is required") + errMessage = append(errMessage, "host: required") } if path != "" { re := regexp.MustCompile("^[a-zA-Z]+(\\/[a-zA-Z]+)*$") if !re.MatchString(path) { - errMessage = append(errMessage, "path is permitted with a-z character and multiple path segments") + errMessage = append(errMessage, "path: must contain only alphabetic characters") } } + + // Validate query parameters + for key, value := range query { + if key == "" { + errMessage = append(errMessage, "query: empty key not allowed") + } + if value == "" { + errMessage = append(errMessage, fmt.Sprintf("query: empty value not allowed for key '%s'", key)) + } + }🧰 Tools
🪛 golangci-lint
76-76: S1007: should use raw string (
...) with regexp.MustCompile to avoid having to escape twice(gosimple)
160-163: Improve query parameter validationThe current implementation has several areas for improvement:
- Use raw string notation for regex to avoid double escaping
- Provide more descriptive error messages
- Separate key and value validation for better error reporting
- re := regexp.MustCompile("^[a-zA-Z0-9-]+$") + re := regexp.MustCompile(`^[a-zA-Z0-9-]+$`) - if !re.MatchString(value) || !re.MatchString(key) || value == "" { - return "", errors.New("the query parameter is not valid") + if !re.MatchString(key) { + return "", fmt.Errorf("invalid query parameter key '%s': must contain only alphanumeric characters and hyphens", key) + } + if value == "" { + return "", fmt.Errorf("empty value not allowed for query parameter '%s'", key) + } + if !re.MatchString(value) { + return "", fmt.Errorf("invalid query parameter value '%s': must contain only alphanumeric characters and hyphens", value) }
212-220: Optimize scheme validationThe current implementation iterates through the allowed schemes sequentially. Consider using a map for O(1) lookup time.
func IsValidURL(urlStr string, allowedReqSchemes []string) bool { if urlStr == "" { return false } + + // Create a map of allowed schemes for O(1) lookup + allowedSchemes := make(map[string]struct{}, len(allowedReqSchemes)) + for _, scheme := range allowedReqSchemes { + if scheme == "" { + return false + } + allowedSchemes[scheme] = struct{}{} + } + parsedURL, err := url.Parse(urlStr) if err != nil { return false } - for _, scheme := range allowedReqSchemes { - if scheme == "" { - return false - } - if parsedURL.Scheme == scheme { - return true - } - } - return false + + _, ok := allowedSchemes[parsedURL.Scheme] + return ok }
258-270: Improve error messages with contextThe error messages could be more descriptive by including the problematic URL and specific reasons for failure.
parsedURL, err := url.Parse(urlStr) if err != nil { - return "", errors.New("URL could not be parsed") + return "", fmt.Errorf("failed to parse URL '%s': %w", urlStr, err) } host, err := publicsuffix.EffectiveTLDPlusOne(parsedURL.Hostname()) if err != nil { - return "", errors.New("could not extract public suffix") + return "", fmt.Errorf("failed to extract domain from '%s': %w", urlStr, err) } if host == "" { - return "", errors.New("parameter not found") + return "", fmt.Errorf("no domain found in URL '%s'", urlStr) }url/url_test.go (1)
1-4: Enhance package documentation.The current documentation is too brief. Consider adding:
- Purpose and main features of the package
- Usage examples for key functions
- Any important notes or limitations
/* -Package url defines url utilities helpers. +Package url provides utilities for URL manipulation and validation. + +It offers functions for: +- Building URLs with query parameters +- Adding query parameters to existing URLs +- Validating URLs against allowed schemes +- Extracting domains from URLs +- Retrieving specific query parameters + +Example: + url := BuildURL("https", "example.com", "path", map[string]string{"key": "value"}) + // Returns: https://example.com/path?key=value */
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go.sumis excluded by!**/*.sum
📒 Files selected for processing (3)
go.mod(1 hunks)url/url.go(1 hunks)url/url_test.go(1 hunks)
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📓 Learnings (1)
url/url.go (1)
Learnt from: andremartinsds
PR: kashifkhan0771/utils#40
File: url/url.go:76-79
Timestamp: 2024-11-16T00:59:45.523Z
Learning: In the `BuildURL` function within `url/url.go`, the current path validation regex is appropriate and should not be changed without a specific reason.
🪛 golangci-lint
url/url.go
76-76: S1007: should use raw string (...) with regexp.MustCompile to avoid having to escape twice
(gosimple)
🔇 Additional comments (1)
url/url.go (1)
310-324: LGTM!
The implementation is clean, efficient, and handles edge cases properly:
- Proper URL parsing
- Efficient parameter lookup
- Correct handling of missing parameters
- Clear error messages
|
Thanks @andremartinsds for the contribution! |
This PR includes several utility functions for handling URL manipulation in Go. Each function serves a specific purpose to parse, modify, and build URLs with query parameters and other components.
Summary by CodeRabbit
golang.org/x/textmodule and the addition of a new indirect dependency ongolang.org/x/net.