Add basicauth authorizer migration#145
Conversation
WalkthroughA new migration function, Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant MigrationCmd
participant MigrateBasicauthAuthorizer
participant Filesystem
User->>MigrationCmd: Run migration for version range
MigrationCmd->>MigrateBasicauthAuthorizer: Invoke migration function
MigrateBasicauthAuthorizer->>Filesystem: Read Go source files
MigrateBasicauthAuthorizer->>Filesystem: Update Authorizer function signatures
MigrateBasicauthAuthorizer->>MigrationCmd: Log migration message
MigrationCmd->>User: Report migration result
Estimated code review effort🎯 2 (Simple) | ⏱️ ~8 minutes Suggested labels
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🧰 Additional context used🧠 Learnings (3)📓 Common learningscmd/internal/migrations/v3/common.go (2)Learnt from: ReneWerner87 Learnt from: gaby cmd/internal/migrations/v3/common_test.go (11)Learnt from: ReneWerner87 Learnt from: sixcolors Learnt from: sixcolors Learnt from: sixcolors Learnt from: norri Learnt from: sixcolors Learnt from: sixcolors Learnt from: sixcolors Learnt from: sixcolors Learnt from: efectn Learnt from: sixcolors 🧬 Code Graph Analysis (3)cmd/internal/migrations/v3/common.go (1)
cmd/internal/migrations/lists.go (1)
cmd/internal/migrations/v3/common_test.go (1)
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🔇 Additional comments (3)
✨ Finishing Touches
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Summary of Changes
Hello @ReneWerner87, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request introduces a new automated migration to facilitate the update of basicauth.Authorizer function signatures. The migration automatically adds a fiber.Ctx parameter to these functions, streamlining the process for users to adapt to potential API changes without manual code modifications. This change includes the implementation of the migration logic, its registration, and comprehensive testing.
Highlights
- New Migration Added: Introduced a new migration function,
MigrateBasicauthAuthorizer, designed to update the signature ofbasicauth.Authorizerfunctions by adding afiber.Ctxparameter. - Migration Registration: The newly created
MigrateBasicauthAuthorizerfunction has been registered within thev3migration list incmd/internal/migrations/lists.go, ensuring it is executed as part of the standard migration process. - Automated Signature Update: The
MigrateBasicauthAuthorizerfunction uses a regular expression to automatically find and modifyAuthorizerfunction signatures, transformingfunc(...)intofunc(..., _ fiber.Ctx)to align with updated API requirements. - Test Coverage: A dedicated test case,
Test_MigrateBasicauthAuthorizer, has been added tocmd/internal/migrations/v3/common_test.goto verify the correct functionality of the migration, ensuring it accurately updates theAuthorizersignature in a simulated file.
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Code Review
This pull request adds a migration for the basicauth.Authorizer signature change, including the migration function and tests. The implementation is a solid start. My feedback focuses on making the migration script more robust to handle edge cases, such as function signatures with no parameters or trailing commas, and expanding the tests to a table-driven format to cover these cases. This will help ensure the migration is safe and effective for all users.
| re := regexp.MustCompile(`Authorizer:\s*func\(([^)]*)\)`) | ||
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| err := internal.ChangeFileContent(cwd, func(content string) string { | ||
| return re.ReplaceAllString(content, `Authorizer: func($1, _ fiber.Ctx)`) | ||
| }) |
There was a problem hiding this comment.
The current implementation for migrating the basicauth.Authorizer signature is not fully robust. It correctly handles the common case where parameters are present, but it may produce invalid Go code if the authorizer function has no parameters (e.g., func() bool).
While the basicauth.Authorizer type requires parameters, making this an edge case, a migration script should ideally be resilient to such variations.
I suggest a more robust implementation using regexp.ReplaceAllStringFunc to handle cases with and without parameters, as well as with optional trailing commas, correctly. This will ensure the migration is safer across a wider range of user code.
re := regexp.MustCompile(`(Authorizer:\s*func\()([^)]*)(\))\s*bool\s*\{\s*return true\s*\}`)
err := internal.ChangeFileContent(cwd, func(content string) string {
return re.ReplaceAllStringFunc(content, func(s string) string {
parts := re.FindStringSubmatch(s)
if len(parts) != 4 {
return s // Return original string if no match
}
params := parts[2]
if strings.TrimSpace(params) == "" {
return parts[1] + "_ fiber.Ctx" + parts[3] + ` bool { return true }`
}
if !strings.HasSuffix(strings.TrimSpace(params), ",") {
params += ","
}
return parts[1] + params + " _ fiber.Ctx" + parts[3] + ` bool { return true }`
})
})| func Test_MigrateBasicauthAuthorizer(t *testing.T) { | ||
| t.Parallel() | ||
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| dir, err := os.MkdirTemp("", "mbauthorizer") | ||
| require.NoError(t, err) | ||
| defer func() { require.NoError(t, os.RemoveAll(dir)) }() | ||
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| file := writeTempFile(t, dir, `package main | ||
| import ( | ||
| "github.com/gofiber/fiber/v2" | ||
| "github.com/gofiber/fiber/v2/middleware/basicauth" | ||
| ) | ||
| var _ = basicauth.New(basicauth.Config{ | ||
| Authorizer: func(u, p string) bool { return true }, | ||
| })`) | ||
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| var buf bytes.Buffer | ||
| cmd := newCmd(&buf) | ||
| require.NoError(t, v3.MigrateBasicauthAuthorizer(cmd, dir, nil, nil)) | ||
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| content := readFile(t, file) | ||
| assert.Contains(t, content, `Authorizer: func(u, p string, _ fiber.Ctx) bool`) | ||
| assert.Contains(t, buf.String(), "Migrating basicauth authorizer") | ||
| } |
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The test for MigrateBasicauthAuthorizer covers the primary success case, which is great. To improve the robustness of the migration and ensure it handles various code styles, I recommend converting this to a table-driven test.
This would allow you to easily add and test edge cases, such as:
- An authorizer function with no parameters.
- An authorizer function with a trailing comma in its parameter list.
This will provide greater confidence that the migration works correctly for all users, especially with a more robust implementation of MigrateBasicauthAuthorizer.
func Test_MigrateBasicauthAuthorizer(t *testing.T) {
t.Parallel()
testCases := []struct {
name string
input string
expected string
}{
{
name: "with parameters",
input: `var _ = basicauth.New(basicauth.Config{\n Authorizer: func(u, p string) bool { return true },\n})`,
expected: `Authorizer: func(u, p string, _ fiber.Ctx) bool { return true }`,
},
{
name: "with parameters and trailing comma",
input: `var _ = basicauth.New(basicauth.Config{\n Authorizer: func(u, p string,) bool { return true },\n})`,
expected: `Authorizer: func(u, p string, _ fiber.Ctx) bool { return true }`,
},
{
name: "without parameters",
input: `var _ = basicauth.New(basicauth.Config{\n Authorizer: func() bool { return true },\n})`,
expected: `Authorizer: func(_ fiber.Ctx) bool { return true }`,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
dir, err := os.MkdirTemp("", "mbauthorizer-"+tc.name)
require.NoError(t, err)
defer func() { require.NoError(t, os.RemoveAll(dir)) }()
fileContent := "package main\nimport (\n \"github.com/gofiber/fiber/v2\"\n \"github.com/gofiber/fiber/v2/middleware/basicauth\"\n)\n" + tc.input
file := writeTempFile(t, dir, fileContent)
var buf bytes.Buffer
cmd := newCmd(&buf)
require.NoError(t, v3.MigrateBasicauthAuthorizer(cmd, dir, nil, nil))
content := readFile(t, file)
assert.Contains(t, content, tc.expected)
assert.Contains(t, buf.String(), "Migrating basicauth authorizer")
})
}
}
Summary
Testing
make formatmake testhttps://chatgpt.com/codex/tasks/task_e_688637215668832683f09b98e49fbdf7
Summary by CodeRabbit
New Features
Tests