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110 lines
2.9 KiB
110 lines
2.9 KiB
// tera-logd owns the authoritative userdata event journal.
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package main
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import (
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"errors"
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"log"
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"net"
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"os"
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"os/signal"
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"path/filepath"
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"strconv"
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"syscall"
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"tera-clone/services/tera-api/internal/logservice"
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"tera-clone/services/tera-api/internal/logstorage"
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"tera-clone/services/tera-api/internal/storage/capacity"
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)
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func main() {
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policyPath := getenv("TERA_LOGD_STORAGE_POLICY", "/userdata/storage-layout.json")
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policy, err := capacity.LoadPolicy(policyPath)
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if err != nil {
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log.Fatalf("tera-logd storage policy setup failed: %v", err)
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}
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store, err := logstorage.Open(logstorage.Options{
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Root: getenv("TERA_LOGD_ROOT", "/userdata/log"),
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SegmentBytes: getenvInt64("TERA_LOGD_SEGMENT_BYTES", 4<<20),
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AuditCapBytes: policy.CapsBytes.AuditLogs,
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SystemCapBytes: policy.CapsBytes.SystemEvents,
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PortCapBytes: policy.CapsBytes.PortEvents,
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IndexCapBytes: policy.CapsBytes.StateAndIndexes,
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GlobalFreeFloor: policy.CapsBytes.GlobalFreeFloor,
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})
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if err != nil {
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log.Fatalf("tera-logd store setup failed: %v", err)
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}
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socketPath := getenv("TERA_LOGD_SOCKET", logservice.DefaultSocketPath)
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listener, err := listen(socketPath)
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if err != nil {
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log.Fatalf("tera-logd socket setup failed: %v", err)
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}
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defer func() {
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_ = listener.Close()
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_ = os.Remove(socketPath)
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}()
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server := logservice.Server{Store: store}
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done := make(chan error, 1)
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go func() { done <- server.Serve(listener) }()
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log.Printf("tera-logd serving authoritative log storage on %s", socketPath)
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signals := make(chan os.Signal, 1)
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signal.Notify(signals, syscall.SIGINT, syscall.SIGTERM)
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select {
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case signal := <-signals:
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log.Printf("tera-logd stopping after %s", signal)
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_ = listener.Close()
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if err := <-done; err != nil {
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log.Printf("tera-logd stop error: %v", err)
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}
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case err := <-done:
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if err != nil {
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log.Fatalf("tera-logd failed: %v", err)
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}
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}
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}
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func listen(socketPath string) (net.Listener, error) {
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if socketPath == "" || !filepath.IsAbs(socketPath) {
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return nil, errors.New("TERA_LOGD_SOCKET must be an absolute path")
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}
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if err := os.MkdirAll(filepath.Dir(socketPath), 0o750); err != nil {
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return nil, err
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}
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if info, err := os.Lstat(socketPath); err == nil {
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if info.Mode()&os.ModeSocket == 0 {
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return nil, errors.New("refusing to replace non-socket log service path")
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}
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if err := os.Remove(socketPath); err != nil {
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return nil, err
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}
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} else if !os.IsNotExist(err) {
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return nil, err
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}
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listener, err := net.Listen("unix", socketPath)
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if err != nil {
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return nil, err
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}
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if err := os.Chmod(socketPath, 0o660); err != nil {
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_ = listener.Close()
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return nil, err
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}
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return listener, nil
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}
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func getenv(key, fallback string) string {
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if value := os.Getenv(key); value != "" {
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return value
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}
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return fallback
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}
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func getenvInt64(key string, fallback int64) int64 {
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value, err := strconv.ParseInt(os.Getenv(key), 10, 64)
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if err != nil || value <= 0 {
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return fallback
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}
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return value
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}
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