v0.13.1 folder restructure, test script added, format adapter async fix

internal/source/null/null.go

@@ -0,0 +1,125 @@
+package null
+
+import (
+	"fmt"
+	"sync/atomic"
+	"time"
+
+	"logwisp/internal/core"
+	"logwisp/internal/plugin"
+	"logwisp/internal/session"
+	"logwisp/internal/source"
+
+	"github.com/lixenwraith/log"
+)
+
+// init registers the component in plugin factory
+func init() {
+	if err := plugin.RegisterSource("null", NewNullSourcePlugin); err != nil {
+		panic(fmt.Sprintf("failed to register null source: %v", err))
+	}
+}
+
+// NullSource generates no log entries, used for testing
+type NullSource struct {
+	// Plugin identity and session management
+	id      string
+	proxy   *session.Proxy
+	session *session.Session
+
+	// Application
+	subscribers []chan core.LogEntry
+	logger      *log.Logger
+
+	// Runtime
+	done chan struct{}
+
+	// Statistics
+	totalEntries  atomic.Uint64
+	startTime     time.Time
+	lastEntryTime atomic.Value // time.Time
+}
+
+// NewNullSourcePlugin creates a null source through plugin factory
+func NewNullSourcePlugin(
+	id string,
+	configMap map[string]any,
+	logger *log.Logger,
+	proxy *session.Proxy,
+) (source.Source, error) {
+	ns := &NullSource{
+		id:          id,
+		proxy:       proxy,
+		subscribers: make([]chan core.LogEntry, 0),
+		done:        make(chan struct{}),
+		logger:      logger,
+	}
+	ns.lastEntryTime.Store(time.Time{})
+
+	// Create session for null source
+	ns.session = proxy.CreateSession(
+		"null://void",
+		map[string]any{
+			"instance_id": id,
+			"type":        "null",
+		},
+	)
+
+	logger.Debug("msg", "Null source initialized",
+		"component", "null_source",
+		"instance_id", id)
+
+	return ns, nil
+}
+
+// Capabilities returns supported capabilities
+func (ns *NullSource) Capabilities() []core.Capability {
+	return []core.Capability{
+		core.CapSessionAware,
+	}
+}
+
+// Subscribe returns a channel for receiving log entries
+func (ns *NullSource) Subscribe() <-chan core.LogEntry {
+	ch := make(chan core.LogEntry, 1000)
+	ns.subscribers = append(ns.subscribers, ch)
+	return ch
+}
+
+// Start begins the source operation (no-op for null source)
+func (ns *NullSource) Start() error {
+	ns.startTime = time.Now()
+	ns.proxy.UpdateActivity(ns.session.ID)
+	ns.logger.Debug("msg", "Null source started",
+		"component", "null_source",
+		"instance_id", ns.id)
+	return nil
+}
+
+// Stop signals the source to stop
+func (ns *NullSource) Stop() {
+	close(ns.done)
+	if ns.session != nil {
+		ns.proxy.RemoveSession(ns.session.ID)
+	}
+	for _, ch := range ns.subscribers {
+		close(ch)
+	}
+	ns.logger.Debug("msg", "Null source stopped",
+		"component", "null_source",
+		"instance_id", ns.id)
+}
+
+// GetStats returns the source's statistics
+func (ns *NullSource) GetStats() source.SourceStats {
+	lastEntry, _ := ns.lastEntryTime.Load().(time.Time)
+
+	return source.SourceStats{
+		ID:            ns.id,
+		Type:          "null",
+		TotalEntries:  ns.totalEntries.Load(),
+		StartTime:     ns.startTime,
+		LastEntryTime: lastEntry,
+		Details:       map[string]any{},
+	}
+}