chore: add mercury

cmd/mercury/app.mercury.go

@@ -0,0 +1,97 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+
+	_ "github.com/lib/pq"
+
+	"go.sour.is/pkg/lg"
+	"go.sour.is/pkg/mercury/app"
+	"go.sour.is/pkg/mercury/http"
+	"go.sour.is/pkg/mercury/mqtt"
+	"go.sour.is/pkg/mercury/pg"
+	"go.sour.is/pkg/service"
+	"go.sour.is/pkg/xdg"
+
+	"go.sour.is/pkg/mercury"
+)
+var baseConfig = `
+# mercury.source [handler] [name]
+#@mercury.source.http-notify.default
+
+#match    :0 *
+#endpoint :http://example.com/webhook
+@mercury.source.http-notify.default
+
+#@mercury.source.mqtt-notify.default
+#match    :0 *
+#endpoint :mqtt://example.com/topic
+@mercury.source.http-notify.default
+
+@mercury.source.mercury-default.default
+match :1 mercury
+
+@mercury.source.mercury-environ.default
+match :1 mercury.host,mercury.environ,mercury.priority,mercury.source.*
+`
+
+var _ = apps.Register(50, func(ctx context.Context, svc *service.Harness) error {
+	ctx,  span := lg.Span(ctx)
+	defer span.End()
+
+	conf, err := readConfig(ctx)
+	if err != nil {
+		return err
+	}
+
+	app.Register(conf)
+	http.Register()
+	mqtt.Register()
+	pg.Register()
+
+	err = mercury.Registry.Configure(conf)
+	if err != nil {
+		return err
+	}
+
+	span.AddEvent("Enable Mercury")
+	svc.Add(mercury.NewHTTP())
+
+	return nil
+})
+
+func readConfig(ctx context.Context) (mercury.SpaceMap, error) {
+	_,  span := lg.Span(ctx)
+	defer span.End()
+
+	conf, err := mercury.ParseText(strings.NewReader(baseConfig))
+	if err != nil {
+		return nil, err
+	}
+
+	wd, err := os.Getwd()
+	if err != err {
+		return nil, err
+	}
+
+	for _, fn := range xdg.Find(wd+":"+xdg.EnvConfigDirs, "config.mercury") {
+		span.AddEvent(fmt.Sprint("config:", fn))
+
+		fd, err := os.Open(fn)
+		if err != nil {
+			return nil, err
+		}
+		defer fd.Close()
+
+		c, err := mercury.ParseText(fd)
+		if err != nil {
+			return nil, err
+		}
+		conf.MergeMap(c)
+	}
+
+	return conf, nil
+}

cmd/mercury/main.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+
+	"go.sour.is/pkg/lg"
+	"go.sour.is/pkg/service"
+)
+
+var apps service.Apps
+var appName, version = service.AppName()
+
+func main() {
+	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, os.Kill)
+	go func() {
+		<-ctx.Done()
+		defer cancel() // restore interrupt function
+	}()
+	if err := run(ctx); err != nil {
+		log.Fatal(err)
+		os.Exit(1)
+	}
+}
+func run(ctx context.Context) error {
+	svc := &service.Harness{}
+	os.Setenv("TRACE_ENDPOINT", "atombox:4318")
+	os.Setenv("EV_TRACE_SAMPLE", "always")
+	ctx, stop := lg.Init(ctx, appName+"-mercury")
+	svc.OnStop(stop)
+	
+	svc.Add(lg.NewHTTP(ctx))
+	svc.Setup(ctx, apps.Apps()...)
+
+	// Run application
+	if err := svc.Run(ctx, appName+"-mercury", version); err != nil && !errors.Is(err, http.ErrServerClosed) {
+		return err
+	}
+	return nil
+}

cmd/mercury/svc.http.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+	"context"
+	"log"
+	"net/http"
+	"strings"
+
+	"github.com/rs/cors"
+
+	"go.sour.is/pkg/env"
+	"go.sour.is/pkg/lg"
+	"go.sour.is/pkg/mux"
+	"go.sour.is/pkg/service"
+	"go.sour.is/pkg/slice"
+)
+
+var _ = apps.Register(20, func(ctx context.Context, svc *service.Harness) error {
+	s := &http.Server{}
+	svc.Add(s)
+
+	mux := mux.New()
+	s.Handler = cors.AllowAll().Handler(mux)
+
+	// s.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	// 	log.Println(r.URL.Path)
+	// 	mux.ServeHTTP(w, r)
+	// })
+
+	s.Addr = env.Default("EV_HTTP", ":4088")
+	if strings.HasPrefix(s.Addr, ":") {
+		s.Addr = "[::]" + s.Addr
+	}
+	svc.OnStart(func(ctx context.Context) error {
+		_, span := lg.Span(ctx)
+		defer span.End()
+
+		log.Print("Listen on ", s.Addr)
+		span.AddEvent("begin listen and serve on " + s.Addr)
+
+		mux.Add(slice.FilterType[interface{ RegisterHTTP(*http.ServeMux) }](svc.Services...)...)
+		return s.ListenAndServe()
+	})
+	svc.OnStop(s.Shutdown)
+
+	return nil
+})