Renaming some stuff and starting on ch. 4 rpc example implemented in Go

sylvilagus/go/Makefile

@@ -1,8 +1,9 @@
 REPO_BASE := github.com/meatballhat/box-o-sand/sylvilagus/go
 PACKAGES := \
 	$(REPO_BASE)/sylvilagus-conntest \
-	$(REPO_BASE)/sylvilagus-chapter02-hello-world-consumer \
-	$(REPO_BASE)/sylvilagus-chapter02-hello-world-producer
+	$(REPO_BASE)/sylvilagus-ch02-hello-world-consumer \
+	$(REPO_BASE)/sylvilagus-ch02-hello-world-producer \
+	$(REPO_BASE)/sylvilagus-ch04-rpc-server
 
 test: build
 	go test -x -v $(PACKAGES)

sylvilagus/go/sylvilagus-ch04-rpc-server/main.go

@@ -0,0 +1,14 @@
+package main
+
+import (
+	"log"
+)
+
+import (
+	"github.com/meatballhat/box-o-sand/sylvilagus/go/sylvilagus"
+)
+
+func main() {
+	log.Println("Would be using AMQP_URI =", sylvilagus.AMQP_URI)
+	log.Println("OH HAI RPC")
+}

sylvilagus/go/sylvilagus/hello.go

@@ -2,21 +2,12 @@ package sylvilagus
 
 import (
 	"log"
-	"os"
 )
 
 import (
 	"github.com/streadway/amqp"
 )
 
-var AMQP_URI = os.Getenv("SYLVILAGUS_AMQP_URI")
-
-func init() {
-	if len(AMQP_URI) < 1 {
-		log.Fatal("SYLVILAGUS_AMQP_URI is not defined!")
-	}
-}
-
 func CreateHelloTopology(connection *amqp.Connection) (*amqp.Channel, error) {
 	channel, err := connection.Channel()
 	if err != nil {

sylvilagus/go/sylvilagus/rpc.go

@@ -0,0 +1,33 @@
+package sylvilagus
+
+import (
+	"log"
+)
+
+import (
+	"github.com/streadway/amqp"
+)
+
+func CreateRPCTopology(connection *amqp.Connection) (channel *amqp.Channel, err error) {
+	if channel, err = connection.Channel(); err != nil {
+		log.Println("Failed to get channel!: ", err)
+		return nil, err
+	}
+
+	if err = channel.ExchangeDeclare("rpc", "direct", true, false, false, false, nil); err != nil {
+		log.Println("Failed to declare exchange!: ", err)
+		return nil, err
+	}
+
+	if _, err = channel.QueueDeclare("ping", false, false, false, false, nil); err != nil {
+		log.Println("Failed to declare queue!: ", err)
+		return nil, err
+	}
+
+	if err = channel.QueueBind("ping", "ping", "rpc", false, nil); err != nil {
+		log.Println("Failed to bind to queue!: ", err)
+		return nil, err
+	}
+
+	return channel, nil
+}

sylvilagus/go/sylvilagus/uri.go

@@ -0,0 +1,14 @@
+package sylvilagus
+
+import (
+	"log"
+	"os"
+)
+
+var AMQP_URI = os.Getenv("SYLVILAGUS_AMQP_URI")
+
+func init() {
+	if len(AMQP_URI) < 1 {
+		log.Fatal("SYLVILAGUS_AMQP_URI is not defined!")
+	}
+}