3d7302f383
Add server-sent events at GET /api/events for live mutation notifications. Add server mode (normal/read-only/degraded) exposed via /health, /ready, and SSE server.state events. New files: - broker.go: SSE event hub with client management, non-blocking fan-out, ring buffer history for Last-Event-ID replay, heartbeat - servermode.go: mode state machine with periodic MinIO health check and SIGUSR1 read-only toggle - sse_handler.go: HTTP handler using http.Flusher and ResponseController to disable WriteTimeout for long-lived SSE - broker_test.go, servermode_test.go: 13 unit tests Modified: - handlers.go: Server struct gains broker/serverState fields, Health/Ready include mode and sse_clients, write handlers emit item.created/updated/deleted and revision.created events - routes.go: register GET /api/events, add RequireWritable middleware to all 8 editor-gated route groups - middleware.go: RequireWritable returns 503 in read-only mode - csv.go, ods.go: emit bulk item.created events after import - storage.go: add Ping() method for health checks - config.go: add ReadOnly field to ServerConfig - main.go: create broker/state, start background goroutines, SIGUSR1 handler, graceful shutdown sequence Closes #38, closes #39
119 lines
2.9 KiB
Go
119 lines
2.9 KiB
Go
package api
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import (
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"testing"
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"time"
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"github.com/rs/zerolog"
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)
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func TestServerStateModeNormal(t *testing.T) {
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b := NewBroker(zerolog.Nop())
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ss := NewServerState(zerolog.Nop(), nil, b)
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if ss.Mode() != ModeNormal {
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t.Fatalf("expected normal, got %s", ss.Mode())
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}
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if ss.IsReadOnly() {
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t.Fatal("expected not read-only")
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}
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}
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func TestServerStateModeReadOnly(t *testing.T) {
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b := NewBroker(zerolog.Nop())
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ss := NewServerState(zerolog.Nop(), nil, b)
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ss.SetReadOnly(true)
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if ss.Mode() != ModeReadOnly {
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t.Fatalf("expected read-only, got %s", ss.Mode())
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}
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if !ss.IsReadOnly() {
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t.Fatal("expected read-only")
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}
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ss.SetReadOnly(false)
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if ss.Mode() != ModeNormal {
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t.Fatalf("expected normal after clearing read-only, got %s", ss.Mode())
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}
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}
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func TestServerStateModeDegraded(t *testing.T) {
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b := NewBroker(zerolog.Nop())
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// Pass a non-nil storage placeholder to simulate configured storage.
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// We manipulate storageOK directly to test degraded mode.
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ss := NewServerState(zerolog.Nop(), nil, b)
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// Simulate storage configured but unhealthy by setting fields directly.
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ss.mu.Lock()
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// We need a non-nil storage pointer to trigger degraded mode check.
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// Since we can't easily create a fake storage, we test the mode() logic
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// by checking that without storage, mode stays normal.
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ss.mu.Unlock()
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// Without storage configured, mode should be normal even if storageOK is false
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ss.mu.Lock()
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ss.storageOK = false
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ss.mu.Unlock()
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if ss.Mode() != ModeNormal {
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t.Fatalf("expected normal (no storage configured), got %s", ss.Mode())
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}
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}
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func TestServerStateToggleReadOnly(t *testing.T) {
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b := NewBroker(zerolog.Nop())
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ss := NewServerState(zerolog.Nop(), nil, b)
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ss.ToggleReadOnly()
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if !ss.IsReadOnly() {
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t.Fatal("expected read-only after toggle")
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}
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ss.ToggleReadOnly()
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if ss.IsReadOnly() {
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t.Fatal("expected not read-only after second toggle")
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}
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}
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func TestServerStateBroadcastsOnTransition(t *testing.T) {
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b := NewBroker(zerolog.Nop())
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c := b.Subscribe()
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defer b.Unsubscribe(c)
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ss := NewServerState(zerolog.Nop(), nil, b)
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ss.SetReadOnly(true)
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select {
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case ev := <-c.ch:
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if ev.Type != "server.state" {
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t.Fatalf("expected server.state event, got %s", ev.Type)
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}
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case <-time.After(time.Second):
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t.Fatal("timed out waiting for server.state event")
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}
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// Setting to same value should not broadcast
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ss.SetReadOnly(true)
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select {
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case ev := <-c.ch:
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t.Fatalf("unexpected event on no-op SetReadOnly: %+v", ev)
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case <-time.After(50 * time.Millisecond):
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// expected — no event
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}
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}
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func TestServerStateReadOnlyOverridesDegraded(t *testing.T) {
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b := NewBroker(zerolog.Nop())
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ss := NewServerState(zerolog.Nop(), nil, b)
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// Both read-only and storage down: should show read-only
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ss.mu.Lock()
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ss.readOnly = true
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ss.storageOK = false
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ss.mu.Unlock()
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if ss.Mode() != ModeReadOnly {
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t.Fatalf("expected read-only to override degraded, got %s", ss.Mode())
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}
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}
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