Rene Nochebuena
81233311d9
Patch to v1.1.1. check_env could only reason at module granularity, so a var that lives on one struct of a multi-struct module (e.g. EINHERJAR_SERVER_CORS_ORIGINS on web.Config, not web/server.Config) couldn't be flagged dead when the app composes the sibling struct. Adds struct-level selectors to close that gap. internal/tools (check_env): - New `composes` input: exact config structs as module/subpackage/Struct selectors (e.g. web/server/Config, db-postgres/Config, core/logz/Config), alongside or instead of the coarse `modules` list. - not-composed now reasons over the union of composed vars (from modules AND struct selectors), so it surfaces struct-level dead vars. Coarse modules:["web"] keeps the prior behavior. - parseStructSelector helper; errors on malformed or non-existent selectors. Tests: struct-level dead-var catch (CORS flagged with web/server/Config but not with module web), bad-selector errors; existing calls updated to the new arg. Version bumped to v1.1.1 (badge + serverVersion). No dependency changes. Reviewed-on: #4 Co-authored-by: Rene Nochebuena Guerrero <rene@nochebuena.dev> Co-committed-by: Rene Nochebuena Guerrero <rene@nochebuena.dev>
94 lines
2.4 KiB
Go
94 lines
2.4 KiB
Go
// Command server is the Einherjar MCP server: a streamable-HTTP service
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// exposing framework knowledge tools to AI assistants.
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//
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// The framework index is embedded into the binary at build time by
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// cmd/indexer. The server itself only reads it.
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package main
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import (
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"flag"
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"fmt"
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"log/slog"
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"net"
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"net/http"
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"os"
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mcpmod "code.nochebuena.dev/einherjar/mcp"
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"code.nochebuena.dev/einherjar/mcp/internal/index"
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"code.nochebuena.dev/einherjar/mcp/internal/tools"
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"github.com/coreos/go-systemd/v22/activation"
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"github.com/modelcontextprotocol/go-sdk/mcp"
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)
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const (
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serverName = "einherjar-mcp"
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serverVersion = "v1.1.1"
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)
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func main() {
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addr := flag.String("addr", envOr("EINHERJAR_MCP_ADDR", ":8080"), "listen address")
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path := flag.String("path", envOr("EINHERJAR_MCP_PATH", "/mcp"), "HTTP path for the MCP streamable endpoint")
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flag.Parse()
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log := slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{Level: slog.LevelInfo}))
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idx, err := index.Load(mcpmod.IndexJSON)
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if err != nil {
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log.Error("load index", "err", err)
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os.Exit(1)
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}
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log.Info("index loaded", "modules", len(idx.Modules), "builtAt", idx.BuiltAt)
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server := mcp.NewServer(&mcp.Implementation{
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Name: serverName,
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Version: serverVersion,
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}, nil)
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tools.Register(server, idx)
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handler := mcp.NewStreamableHTTPHandler(func(*http.Request) *mcp.Server {
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return server
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}, nil)
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mux := http.NewServeMux()
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mux.Handle(*path, handler)
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mux.HandleFunc(*path+"/healthz", func(w http.ResponseWriter, _ *http.Request) {
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fmt.Fprintln(w, "ok")
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})
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ln, mode, err := chooseListener(*addr)
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if err != nil {
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log.Error("listen", "err", err)
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os.Exit(1)
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}
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log.Info("listening", "mode", mode, "addr", ln.Addr().String(), "path", *path)
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srv := &http.Server{Handler: mux}
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if err := srv.Serve(ln); err != nil && err != http.ErrServerClosed {
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log.Error("server", "err", err)
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os.Exit(1)
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}
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}
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// chooseListener returns a socket-activated listener when systemd inherited
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// one, falling back to a plain TCP listener on addr. The mode string is
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// "socket-activated" or "tcp" for logging.
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func chooseListener(addr string) (net.Listener, string, error) {
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listeners, err := activation.Listeners()
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if err == nil && len(listeners) > 0 {
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return listeners[0], "socket-activated", nil
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}
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ln, err := net.Listen("tcp", addr)
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if err != nil {
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return nil, "", err
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}
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return ln, "tcp", nil
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}
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func envOr(key, def string) string {
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if v := os.Getenv(key); v != "" {
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return v
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}
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return def
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}
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