Kyle Isom
051a85d846
Build the knowledge graph pillar with the kg package: - Node: hierarchical notes with parent/children, C2 wiki-style naming, shared tag/category pool with artifacts - Cell: content units (markdown, code, plain) with ordinal ordering - Fact: EAV tuples with transaction timestamps and retraction support - Edge: directed graph links (child, parent, related, artifact_link) Includes schema migration (002_knowledge_graph.sql), protobuf definitions (kg.proto), full gRPC KnowledgeGraphService implementation, CLI commands (node create/get), and comprehensive test coverage. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
90 lines
2.3 KiB
Go
90 lines
2.3 KiB
Go
// Command exod is the gRPC backend daemon for the exo system.
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// It is the sole owner of the SQLite database and blob store.
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package main
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import (
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"flag"
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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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"syscall"
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"google.golang.org/grpc"
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"git.wntrmute.dev/kyle/exo/blob"
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"git.wntrmute.dev/kyle/exo/config"
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"git.wntrmute.dev/kyle/exo/db"
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pb "git.wntrmute.dev/kyle/exo/proto/exo/v1"
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"git.wntrmute.dev/kyle/exo/server"
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)
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var version = "dev"
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func main() {
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var (
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listenAddr = flag.String("listen", "", "gRPC listen address (default from config)")
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basePath = flag.String("base", "", "base data directory (default $HOME/exo)")
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showVer = flag.Bool("version", false, "print version and exit")
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)
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flag.Parse()
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if *showVer {
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log.Printf("exod %s", version)
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os.Exit(0)
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}
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cfg := config.Default()
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if *basePath != "" {
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cfg = config.FromBasePath(*basePath)
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}
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if *listenAddr != "" {
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cfg.GRPCListenAddr = *listenAddr
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}
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// Ensure data directories exist.
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if err := os.MkdirAll(cfg.BasePath, 0o750); err != nil {
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log.Fatalf("exod: failed to create base directory: %v", err)
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}
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if err := os.MkdirAll(cfg.BlobStorePath, 0o750); err != nil {
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log.Fatalf("exod: failed to create blob store directory: %v", err)
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}
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// Open and migrate the database.
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database, err := db.Open(cfg.DatabasePath)
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if err != nil {
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log.Fatalf("exod: failed to open database: %v", err)
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}
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defer func() { _ = database.Close() }()
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if err := db.Migrate(database); err != nil {
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log.Fatalf("exod: failed to migrate database: %v", err)
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}
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blobStore := blob.NewStore(cfg.BlobStorePath)
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// Start gRPC server.
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lis, err := net.Listen("tcp", cfg.GRPCListenAddr)
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if err != nil {
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log.Fatalf("exod: failed to listen on %s: %v", cfg.GRPCListenAddr, err)
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}
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grpcServer := grpc.NewServer()
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pb.RegisterArtifactServiceServer(grpcServer, server.NewArtifactServer(database, blobStore))
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pb.RegisterKnowledgeGraphServiceServer(grpcServer, server.NewKGServer(database))
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// Graceful shutdown on SIGINT/SIGTERM.
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sigCh := make(chan os.Signal, 1)
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signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
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go func() {
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sig := <-sigCh
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log.Printf("exod: received %s, shutting down", sig)
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grpcServer.GracefulStop()
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}()
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log.Printf("exod %s listening on %s", version, cfg.GRPCListenAddr)
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if err := grpcServer.Serve(lis); err != nil {
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log.Fatalf("exod: gRPC server error: %v", err)
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}
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}
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