broker: swap default broker from eats to http (#1524)

* broker: swap default broker from eats to http

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

broker/http/http.go

@@ -0,0 +1,11 @@
+// Package http provides a http based message broker
+package http
+
+import (
+	"github.com/micro/go-micro/v2/broker"
+)
+
+// NewBroker returns a new http broker
+func NewBroker(opts ...broker.Option) broker.Broker {
+	return broker.NewBroker(opts...)
+}

broker/http/options.go

@@ -0,0 +1,23 @@
+package http
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/micro/go-micro/v2/broker"
+)
+
+// Handle registers the handler for the given pattern.
+func Handle(pattern string, handler http.Handler) broker.Option {
+	return func(o *broker.Options) {
+		if o.Context == nil {
+			o.Context = context.Background()
+		}
+		handlers, ok := o.Context.Value("http_handlers").(map[string]http.Handler)
+		if !ok {
+			handlers = make(map[string]http.Handler)
+		}
+		handlers[pattern] = handler
+		o.Context = context.WithValue(o.Context, "http_handlers", handlers)
+	}
+}