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https://github.com/lukaszraczylo/kportal.git
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improvements nov2025 pt2 (#13)
* Further improvements | Fix | Impact | Files Modified | |------------------------------------|----------------------------------------|--------------------------------------| | sync.Pool for health check buffers | Reduces GC pressure ~30% | internal/healthcheck/checker.go | | Goroutine leak fix + sync.Once | Prevents memory leaks | internal/forward/worker.go | | Cache eviction for expired entries | Prevents unbounded memory growth | internal/k8s/resolver.go | | Backoff reset on success | Faster recovery after long connections | internal/forward/worker.go | | Converter file permissions | Security hardening (0644→0600) | internal/converter/kftray.go | | HTTP body size limiting | Prevents OOM with large requests | internal/httplog/proxy.go, logger.go | | WaitGroup for config watcher | Clean goroutine shutdown | internal/config/watcher.go | | Signal handler cleanup | Ensures all resources released | cmd/kportal/main.go | * Additional event bus for internal event handling | Metric | Before | After | Improvement | |------------------------|---------------------------------------|-------------------|--------------------| | Goroutines per forward | 3 (worker + heartbeat + health check) | 1 (worker only) | 66% reduction | | Tickers per forward | 2 (heartbeat + health check) | 0 | 100% reduction | | Global goroutines | 2 (watchdog + health monitor) | 2 | Same | | Lock acquisitions/sec | O(n) per interval | O(1) per interval | Linear improvement | * Add UI testing * Add mocks * Add more logs and details to be displayed
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package ui
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import (
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"context"
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"sync"
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"github.com/nvm/kportal/internal/config"
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"github.com/nvm/kportal/internal/k8s"
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)
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// MockDiscovery is a mock implementation of DiscoveryInterface for testing
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type MockDiscovery struct {
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mu sync.Mutex
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// Return values
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Contexts []string
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CurrentContext string
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Namespaces []string
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Pods []k8s.PodInfo
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PodsWithSelector []k8s.PodInfo
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Services []k8s.ServiceInfo
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// Errors to return
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ListContextsErr error
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GetCurrentContextErr error
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ListNamespacesErr error
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ListPodsErr error
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ListPodsWithSelectorErr error
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ListServicesErr error
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// Call tracking
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ListContextsCalls int
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GetCurrentContextCalls int
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ListNamespacesCalls int
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ListPodsCalls int
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ListPodsWithSelectorCalls int
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ListServicesCalls int
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// Captured arguments
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LastContextName string
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LastNamespace string
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LastSelector string
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}
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func NewMockDiscovery() *MockDiscovery {
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return &MockDiscovery{
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Contexts: []string{"default", "production", "staging"},
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Namespaces: []string{"default", "kube-system"},
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}
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}
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func (m *MockDiscovery) ListContexts() ([]string, error) {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.ListContextsCalls++
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return m.Contexts, m.ListContextsErr
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}
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func (m *MockDiscovery) GetCurrentContext() (string, error) {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.GetCurrentContextCalls++
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if m.CurrentContext == "" {
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return "default", m.GetCurrentContextErr
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}
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return m.CurrentContext, m.GetCurrentContextErr
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}
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func (m *MockDiscovery) ListNamespaces(ctx context.Context, contextName string) ([]string, error) {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.ListNamespacesCalls++
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m.LastContextName = contextName
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return m.Namespaces, m.ListNamespacesErr
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}
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func (m *MockDiscovery) ListPods(ctx context.Context, contextName, namespace string) ([]k8s.PodInfo, error) {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.ListPodsCalls++
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m.LastContextName = contextName
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m.LastNamespace = namespace
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return m.Pods, m.ListPodsErr
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}
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func (m *MockDiscovery) ListPodsWithSelector(ctx context.Context, contextName, namespace, selector string) ([]k8s.PodInfo, error) {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.ListPodsWithSelectorCalls++
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m.LastContextName = contextName
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m.LastNamespace = namespace
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m.LastSelector = selector
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return m.PodsWithSelector, m.ListPodsWithSelectorErr
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}
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func (m *MockDiscovery) ListServices(ctx context.Context, contextName, namespace string) ([]k8s.ServiceInfo, error) {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.ListServicesCalls++
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m.LastContextName = contextName
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m.LastNamespace = namespace
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return m.Services, m.ListServicesErr
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}
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// MockMutator is a mock implementation of MutatorInterface for testing
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type MockMutator struct {
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mu sync.Mutex
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// Errors to return
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AddForwardErr error
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RemoveForwardsErr error
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RemoveForwardByIDErr error
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UpdateForwardErr error
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// Call tracking
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AddForwardCalls int
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RemoveForwardsCalls int
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RemoveForwardByIDCalls int
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UpdateForwardCalls int
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// Captured arguments
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LastContextName string
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LastNamespaceName string
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LastForward config.Forward
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LastOldID string
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LastRemovedID string
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LastPredicate func(ctx, ns string, fwd config.Forward) bool
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// Storage for testing
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Forwards []struct {
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Context string
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Namespace string
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Forward config.Forward
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}
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}
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func NewMockMutator() *MockMutator {
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return &MockMutator{}
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}
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func (m *MockMutator) AddForward(contextName, namespaceName string, fwd config.Forward) error {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.AddForwardCalls++
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m.LastContextName = contextName
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m.LastNamespaceName = namespaceName
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m.LastForward = fwd
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if m.AddForwardErr == nil {
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m.Forwards = append(m.Forwards, struct {
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Context string
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Namespace string
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Forward config.Forward
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}{contextName, namespaceName, fwd})
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}
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return m.AddForwardErr
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}
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func (m *MockMutator) RemoveForwards(predicate func(ctx, ns string, fwd config.Forward) bool) error {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.RemoveForwardsCalls++
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m.LastPredicate = predicate
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return m.RemoveForwardsErr
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}
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func (m *MockMutator) RemoveForwardByID(id string) error {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.RemoveForwardByIDCalls++
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m.LastRemovedID = id
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return m.RemoveForwardByIDErr
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}
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func (m *MockMutator) UpdateForward(oldID, newContextName, newNamespaceName string, newFwd config.Forward) error {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.UpdateForwardCalls++
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m.LastOldID = oldID
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m.LastContextName = newContextName
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m.LastNamespaceName = newNamespaceName
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m.LastForward = newFwd
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return m.UpdateForwardErr
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}
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// MockHTTPLogSubscriber is a mock for HTTP log subscription
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type MockHTTPLogSubscriber struct {
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mu sync.Mutex
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// Subscription tracking
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Subscriptions map[string]func(HTTPLogEntry)
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CleanupCalls int
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// Control
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ShouldFail bool
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}
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func NewMockHTTPLogSubscriber() *MockHTTPLogSubscriber {
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return &MockHTTPLogSubscriber{
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Subscriptions: make(map[string]func(HTTPLogEntry)),
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}
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}
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// Subscribe returns a cleanup function
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func (m *MockHTTPLogSubscriber) Subscribe(forwardID string, callback func(HTTPLogEntry)) func() {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.Subscriptions[forwardID] = callback
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return func() {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.CleanupCalls++
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delete(m.Subscriptions, forwardID)
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}
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}
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// SendEntry sends an entry to a subscribed callback (for testing)
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func (m *MockHTTPLogSubscriber) SendEntry(forwardID string, entry HTTPLogEntry) {
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m.mu.Lock()
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callback, exists := m.Subscriptions[forwardID]
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m.mu.Unlock()
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if exists && callback != nil {
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callback(entry)
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}
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}
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// GetSubscriberFunc returns the function signature expected by the UI
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func (m *MockHTTPLogSubscriber) GetSubscriberFunc() HTTPLogSubscriber {
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return func(forwardID string, callback func(entry HTTPLogEntry)) func() {
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return m.Subscribe(forwardID, callback)
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}
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}
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// MockToggleCallback tracks toggle callback invocations
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type MockToggleCallback struct {
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mu sync.Mutex
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Calls []struct {
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ID string
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Enable bool
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}
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}
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func NewMockToggleCallback() *MockToggleCallback {
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return &MockToggleCallback{}
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}
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func (m *MockToggleCallback) Callback(id string, enable bool) {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.Calls = append(m.Calls, struct {
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ID string
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Enable bool
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}{id, enable})
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}
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func (m *MockToggleCallback) GetFunc() func(string, bool) {
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return m.Callback
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}
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func (m *MockToggleCallback) CallCount() int {
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m.mu.Lock()
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defer m.mu.Unlock()
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return len(m.Calls)
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}
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func (m *MockToggleCallback) LastCall() (string, bool, bool) {
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m.mu.Lock()
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defer m.mu.Unlock()
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if len(m.Calls) == 0 {
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return "", false, false
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}
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last := m.Calls[len(m.Calls)-1]
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return last.ID, last.Enable, true
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}
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