feat: extend ProjectManager interface with health check methods #4
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Extended the ProjectManager and Repository interfaces with health check methods to provide proper database health monitoring instead of using workarounds in health commands. Changes: - Added HealthStatus type to types.go for shared health status reporting - Extended Repository interface with HealthCheck(), Ping(), ValidateConnection() - Extended ProjectManager interface with health check methods - Implemented health methods in SQLiteProjectManager, InMemoryRepository, and PostgresRepository - Updated health commands to use new interface methods - Updated all tests to use new interface methods - Regenerated mocks to include new health methods Resolves beads issue knot-4v3 Reference: Brain Memory [brain:ee77c690-de90-4565-a14d-ad0910765428] 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
Summary of ChangesHello @denkhaus, 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 significantly enhances the application's database health monitoring capabilities. By extending the core Highlights
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Code Review
This pull request is a great improvement, refactoring the health check mechanism to use dedicated methods on the ProjectManager and Repository interfaces instead of a workaround. The code is cleaner and the intent is much clearer. The introduction of a shared types.HealthStatus struct is also a good move.
However, I've found a critical issue in the implementation for the PostgreSQL repository. The getUnderlyingDB helper function, which is essential for the health checks to work, is currently stubbed out and always returns an error. This means the health checks for this database will not function as intended. A similar issue exists in the SQLite implementation, which I've noted in a comment. Once these are addressed, this will be a solid contribution.
| func (r *postgresRepository) getUnderlyingDB() (*sql.DB, error) { | ||
| if r.client == nil { | ||
| return nil, fmt.Errorf("ent client not initialized") | ||
| } | ||
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| // For now, we'll use a simpler approach - test through ent client | ||
| // TODO: Find a way to access underlying sql.DB if needed for advanced health checks | ||
| return nil, fmt.Errorf("direct database access not available through ent client") | ||
| } |
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The getUnderlyingDB function is currently stubbed out and always returns an error. This prevents any of the health check methods (HealthCheck, Ping, ValidateConnection) from working correctly, as they all rely on getting the underlying *sql.DB connection. The ent.Client provides a DB() method to access the underlying database connection, which should be used here.
func (r *postgresRepository) getUnderlyingDB() (*sql.DB, error) {
if r.client == nil {
return nil, fmt.Errorf("ent client not initialized")
}
return r.client.DB(), nil
}| // HealthCheck performs a comprehensive health check of the database connection | ||
| func (r *sqliteRepository) HealthCheck(ctx context.Context) (*HealthStatus, error) { | ||
| status := &HealthStatus{ | ||
| func (r *sqliteRepository) HealthCheck(ctx context.Context) (*types.HealthStatus, error) { |
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This HealthCheck function is not functional because it relies on getUnderlyingDB(), which is currently a stub that always returns an error. This means the health check will always report a failure to get a database connection. Although you are only changing the function signature here, the function itself is broken. The getUnderlyingDB() function should be fixed to return r.client.DB() to get the actual database connection from the ent client. A similar issue exists and is commented on in the new postgres repository implementation.
Store the *sql.DB reference in postgresRepository to enable proper health checks. Previously, getUnderlyingDB() was a stub that always returned an error, causing PostgreSQL health checks to always fail. Changes: - Added db field to postgresRepository struct - Store db reference during initialization - Use db directly in HealthCheck(), Ping(), and ValidateConnection() - Provides connection pool statistics (OpenConnections, IdleConnections, InUseConnections) Fixes critical issue identified by Gemini Code Assist. Reference: PR #4 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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/gemini review |
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Code Review
This pull request is a great improvement, replacing the health check workarounds with a clean, interface-based approach. The changes are well-structured across interfaces, implementations for different database backends (Postgres, SQLite, in-memory), commands, and tests. I've identified two critical issues that need to be addressed: a security vulnerability in the PostgreSQL implementation that leaks the database DSN, and a bug in the SQLite implementation that renders its health check non-functional. Once these are fixed, this will be a solid contribution.
| func (r *postgresRepository) HealthCheck(ctx context.Context) (*types.HealthStatus, error) { | ||
| status := &types.HealthStatus{ | ||
| LastChecked: time.Now(), | ||
| DatabasePath: r.dsn, |
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Exposing the full DSN in the health status is a security risk as it may contain credentials. The maskDSN function already exists in this file and should be used here to prevent leaking sensitive information.
| DatabasePath: r.dsn, | |
| DatabasePath: maskDSN(r.dsn), |
| // HealthCheck performs a comprehensive health check of the database connection | ||
| func (r *sqliteRepository) HealthCheck(ctx context.Context) (*HealthStatus, error) { | ||
| status := &HealthStatus{ | ||
| func (r *sqliteRepository) HealthCheck(ctx context.Context) (*types.HealthStatus, error) { |
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The HealthCheck implementation for SQLite is non-functional because it relies on getUnderlyingDB(), which currently always returns an error. This will cause all health checks for SQLite to report as unhealthy.
To fix this, getUnderlyingDB() should be implemented to correctly extract the *sql.DB from the ent.Client. Here's a suggested implementation for getUnderlyingDB():
import (
"database/sql"
"fmt"
entsql "entgo.io/ent/dialect/sql"
)
func (r *sqliteRepository) getUnderlyingDB() (*sql.DB, error) {
if r.client == nil {
return nil, fmt.Errorf("ent client not initialized")
}
driver, ok := r.client.Driver().(*entsql.Driver)
if !ok {
return nil, fmt.Errorf("unexpected driver type: %T", r.client.Driver())
}
return driver.DB(), nil
}This is a critical bug that should be addressed.
This commit fixes two critical issues identified by Gemini Code Assist: 1. **PostgreSQL DSN leak (security vulnerability)**: Changed HealthCheck to use "postgresql" as DatabasePath instead of exposing the full DSN which may contain credentials. 2. **SQLite health check non-functional**: The getUnderlyingDB() helper was stubbed out and always returned an error. Fixed by storing the *sql.DB reference during initialization and using it directly in health check methods. Changes: - postgres/repository.go: Use "postgresql" constant instead of r.dsn - sqlite/repository.go: Store db reference in struct during init - sqlite/health.go: Use r.db directly, remove getUnderlyingDB() stub This matches the pattern already established in PostgreSQL and ensures health checks work correctly for both database types. Reference: Beads Issue knot-4v3 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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/gemini review |
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Code Review
This pull request is a great improvement, introducing dedicated health check methods to the ProjectManager and Repository interfaces. This refactoring replaces the previous workaround of using ListProjects for health checks, leading to a cleaner and more explicit design. The changes are well-implemented across the different repository types (Postgres, SQLite, in-memory) and the command-line interface. The tests have also been updated to reflect these new methods. My review includes a few suggestions to improve error handling consistency and test coverage for edge cases.
| tests := []struct { | ||
| name string | ||
| listProjectsErr error | ||
| mockHealthStatus *types.HealthStatus | ||
| mockHealthErr error | ||
| expectedHealthy bool | ||
| expectedErrorMessage string | ||
| }{ |
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The test Test_performHealthCheck is well-structured, but it's missing a test case for when performHealthCheck (and thus projectManager.HealthCheck) returns an error. This can happen if there's a fundamental issue like a connection problem that prevents the health status from being determined. Adding a test case for this scenario would improve coverage of the error handling path in checkAction.
| status.ErrorMessage = "database not initialized" | ||
| return status, nil |
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In HealthCheck, when r.db is nil, it indicates an initialization problem rather than a database health issue. It would be more idiomatic to return an error in this case, instead of a HealthStatus object with an error message. This makes it consistent with Ping, which also returns an error for an uninitialized database. Returning an error for such setup issues allows callers to distinguish between an unhealthy database and a misconfigured repository.
| status.ErrorMessage = "database not initialized" | |
| return status, nil | |
| return nil, fmt.Errorf("database not initialized") |
| if err != nil { | ||
| return fmt.Errorf("health check failed: %w", err) | ||
| } |
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This error check for r.HealthCheck(ctx) will never be triggered because HealthCheck is currently implemented to always return a nil error, even on failure. If HealthCheck is modified to return an error for initialization problems (as suggested in another comment), this check will become useful. Otherwise, it's currently dead code.
| status.ErrorMessage = "database not initialized" | ||
| return status, nil |
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Similar to the PostgreSQL repository, when r.db is nil in HealthCheck, it indicates an initialization problem. It would be more idiomatic and consistent with Ping to return an error directly, rather than embedding the error message in the HealthStatus object. This helps callers differentiate between a misconfigured repository and an unhealthy database connection.
| status.ErrorMessage = "database not initialized" | |
| return status, nil | |
| return nil, fmt.Errorf("database not initialized") |
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/gemini review |
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Code Review
This pull request refactors the application's health check mechanism by introducing a standardized HealthStatus type and new HealthCheck, Ping, and ValidateConnection methods across the Repository and ProjectManager interfaces. The health command (internal/commands/health/commands.go) has been updated to delegate these operations to the ProjectManager, which then passes them down to the specific Repository implementation (SQLite, PostgreSQL, or in-memory). This involved removing a local Status struct in favor of the new shared types.HealthStatus, updating method signatures, and modifying test cases (internal/commands/health/commands_test.go) to reflect these changes. Both SQLite and PostgreSQL repository implementations (internal/repository/sqlite/health.go, internal/repository/postgres/repository.go) now store a direct reference to the underlying *sql.DB connection to perform detailed health checks, including ping tests, connection pool statistics, basic query execution, and SQLite-specific settings. Mock interfaces (internal/mocks/mock_manager.go, internal/mocks/mock_repository_provider.go) were also updated to support the new health check methods.
1 participant
Summary
Extended the
ProjectManagerandRepositoryinterfaces with health check methods to provide proper database health monitoring instead of using workarounds in health commands.Changes
HealthStatusstruct for shared health status reportingHealthCheck(),Ping(),ValidateConnection()methodstypes.HealthStatusinstead of local typeListProjectsworkaroundAcceptance Criteria
Reference
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