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feat: show error reason when monitors go DOWN
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Propagate check failure reasons through the entire stack:
- Checker captures specific errors (DNS, timeout, HTTP status, SSL, etc.)
- Engine tracks LastError, StatusChangedAt, LastSuccessAt per monitor
- State transitions persisted to new state_changes table
- Detail panel shows error reason, HTTP code, state duration, last
  success time, and last 5 state change events
- Monitor table shows inline error preview for DOWN services
- Alert messages include error reason
- Probe nodes forward error reasons to leader

15 files changed across models, checker, engine, store, TUI, and probes.
This commit is contained in:
Tyler Koenig
2026-05-27 19:32:30 -04:00
parent d8a2cab90f
commit bc3a44beac
15 changed files with 299 additions and 96 deletions
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internal/monitor/monitor_test.go
+25 -22
View File
@@ -2,10 +2,11 @@ package monitor
import (
"fmt"
"gitea.lerkolabs.com/lerko/uptop/internal/models"
"sync"
"testing"
"time"
"gitea.lerkolabs.com/lerko/uptop/internal/models"
)
// --- Mock Store ---
@@ -68,12 +69,14 @@ func (m *mockStore) GetActiveMaintenanceWindows() ([]models.MaintenanceWindow, e
func (m *mockStore) GetAllMaintenanceWindows(int) ([]models.MaintenanceWindow, error) {
return nil, nil
}
func (m *mockStore) AddMaintenanceWindow(models.MaintenanceWindow) error { return nil }
func (m *mockStore) EndMaintenanceWindow(int) error { return nil }
func (m *mockStore) DeleteMaintenanceWindow(int) error { return nil }
func (m *mockStore) GetPreference(string) (string, error) { return "", nil }
func (m *mockStore) SetPreference(string, string) error { return nil }
func (m *mockStore) Close() error { return nil }
func (m *mockStore) AddMaintenanceWindow(models.MaintenanceWindow) error { return nil }
func (m *mockStore) EndMaintenanceWindow(int) error { return nil }
func (m *mockStore) DeleteMaintenanceWindow(int) error { return nil }
func (m *mockStore) GetPreference(string) (string, error) { return "", nil }
func (m *mockStore) SetPreference(string, string) error { return nil }
func (m *mockStore) SaveStateChange(int, string, string, string) error { return nil }
func (m *mockStore) GetStateChanges(int, int) ([]models.StateChange, error) { return nil, nil }
func (m *mockStore) Close() error { return nil }
func (m *mockStore) GetAllAlerts() ([]models.AlertConfig, error) {
m.mu.Lock()
@@ -174,7 +177,7 @@ func TestHandleStatusChange_PendingToUp(t *testing.T) {
site := models.Site{ID: 1, Name: "test", Status: "PENDING", MaxRetries: 3, AlertID: 1}
injectSite(e, site)
e.handleStatusChange(site, "UP", 200, 10*time.Millisecond)
e.handleStatusChange(site, "UP", 200, 10*time.Millisecond, "")
s, _ := getSite(e, 1)
if s.Status != "UP" {
@@ -195,7 +198,7 @@ func TestHandleStatusChange_UpIncrementFailure(t *testing.T) {
site := models.Site{ID: 1, Name: "test", Status: "UP", MaxRetries: 3, FailureCount: 0}
injectSite(e, site)
e.handleStatusChange(site, "DOWN", 500, 0)
e.handleStatusChange(site, "DOWN", 500, 0, "test error")
s, _ := getSite(e, 1)
if s.Status != "UP" {
@@ -213,7 +216,7 @@ func TestHandleStatusChange_UpToDown_ExceedsRetries(t *testing.T) {
site := models.Site{ID: 1, Name: "test", Status: "UP", MaxRetries: 2, FailureCount: 2, AlertID: 1}
injectSite(e, site)
e.handleStatusChange(site, "DOWN", 500, 0)
e.handleStatusChange(site, "DOWN", 500, 0, "test error")
s, _ := getSite(e, 1)
if s.Status != "DOWN" {
@@ -236,7 +239,7 @@ func TestHandleStatusChange_UpToDown_ZeroRetries(t *testing.T) {
site := models.Site{ID: 1, Name: "test", Status: "UP", MaxRetries: 0, FailureCount: 0, AlertID: 1}
injectSite(e, site)
e.handleStatusChange(site, "DOWN", 0, 0)
e.handleStatusChange(site, "DOWN", 0, 0, "test error")
s, _ := getSite(e, 1)
if s.Status != "DOWN" {
@@ -255,7 +258,7 @@ func TestHandleStatusChange_DownToUp_Recovery(t *testing.T) {
site := models.Site{ID: 1, Name: "test", Status: "DOWN", FailureCount: 4, AlertID: 1}
injectSite(e, site)
e.handleStatusChange(site, "UP", 200, 5*time.Millisecond)
e.handleStatusChange(site, "UP", 200, 5*time.Millisecond, "")
s, _ := getSite(e, 1)
if s.Status != "UP" {
@@ -276,7 +279,7 @@ func TestHandleStatusChange_DownStaysDown(t *testing.T) {
site := models.Site{ID: 1, Name: "test", Status: "DOWN", MaxRetries: 2, FailureCount: 3}
injectSite(e, site)
e.handleStatusChange(site, "DOWN", 0, 0)
e.handleStatusChange(site, "DOWN", 0, 0, "test error")
s, _ := getSite(e, 1)
if s.Status != "DOWN" {
@@ -295,7 +298,7 @@ func TestHandleStatusChange_SSLExpired(t *testing.T) {
site := models.Site{ID: 1, Name: "test", Status: "UP", MaxRetries: 0, AlertID: 1}
injectSite(e, site)
e.handleStatusChange(site, "SSL EXP", 0, 0)
e.handleStatusChange(site, "SSL EXP", 0, 0, "SSL certificate expired")
s, _ := getSite(e, 1)
if s.Status != "SSL EXP" {
@@ -315,7 +318,7 @@ func TestHandleStatusChange_AlertSuppressedMaintenance(t *testing.T) {
site := models.Site{ID: 1, Name: "test", Status: "UP", MaxRetries: 0, AlertID: 1}
injectSite(e, site)
e.handleStatusChange(site, "DOWN", 0, 0)
e.handleStatusChange(site, "DOWN", 0, 0, "test error")
s, _ := getSite(e, 1)
if s.Status != "DOWN" {
@@ -346,7 +349,7 @@ func TestHandleStatusChange_RecoverySuppressedMaintenance(t *testing.T) {
site := models.Site{ID: 1, Name: "test", Status: "DOWN", AlertID: 1}
injectSite(e, site)
e.handleStatusChange(site, "UP", 200, 0)
e.handleStatusChange(site, "UP", 200, 0, "")
s, _ := getSite(e, 1)
if s.Status != "UP" {
@@ -370,7 +373,7 @@ func TestHandleStatusChange_SSLWarning(t *testing.T) {
}
injectSite(e, site)
e.handleStatusChange(site, "UP", 200, 0)
e.handleStatusChange(site, "UP", 200, 0, "")
s, _ := getSite(e, 1)
if !s.SentSSLWarning {
@@ -393,7 +396,7 @@ func TestHandleStatusChange_SSLWarningNotRepeated(t *testing.T) {
}
injectSite(e, site)
e.handleStatusChange(site, "UP", 200, 0)
e.handleStatusChange(site, "UP", 200, 0, "")
waitAsync()
if len(ms.getAlertCallsSnapshot()) != 0 {
@@ -412,7 +415,7 @@ func TestHandleStatusChange_SSLWarningReset(t *testing.T) {
}
injectSite(e, site)
e.handleStatusChange(site, "UP", 200, 0)
e.handleStatusChange(site, "UP", 200, 0, "")
s, _ := getSite(e, 1)
if s.SentSSLWarning {
@@ -433,7 +436,7 @@ func TestHandleStatusChange_SSLWarningSuppressedMaint(t *testing.T) {
}
injectSite(e, site)
e.handleStatusChange(site, "UP", 200, 0)
e.handleStatusChange(site, "UP", 200, 0, "")
s, _ := getSite(e, 1)
if !s.SentSSLWarning {
@@ -452,7 +455,7 @@ func TestHandleStatusChange_InactiveEngine(t *testing.T) {
injectSite(e, site)
e.SetActive(false)
e.handleStatusChange(site, "DOWN", 0, 0)
e.handleStatusChange(site, "DOWN", 0, 0, "test error")
s, _ := getSite(e, 1)
if s.Status != "UP" {
@@ -991,7 +994,7 @@ func TestConcurrent_HandleStatusChangeAndGetState(t *testing.T) {
wg.Add(2)
go func() {
defer wg.Done()
e.handleStatusChange(site, "DOWN", 500, 0)
e.handleStatusChange(site, "DOWN", 500, 0, "test error")
}()
go func() {
defer wg.Done()