Validate Version (#32)

and product. Version should be >= 4.0 and product should be RabbitMQ.
closes: https://github.com/rabbitmq/rabbitmq-amqp-go-client/issues/26

Signed-off-by: Gabriele Santomaggio <G.santomaggio@gmail.com>

pkg/rabbitmqamqp/amqp_connection.go

@@ -56,6 +56,9 @@ type AmqpConnOptions struct {
 }
 
 type AmqpConnection struct {
+	properties        map[string]any
+	featuresAvailable *featuresAvailable
+
 	azureConnection *amqp.Conn
 	id              string
 	management      *AmqpManagement
@@ -66,6 +69,11 @@ type AmqpConnection struct {
 	entitiesTracker *entitiesTracker
 }
 
+func (a *AmqpConnection) Properties() map[string]any {
+	return a.properties
+
+}
+
 // NewPublisher creates a new Publisher that sends messages to the provided destination.
 // The destination is a TargetAddress that can be a Queue or an Exchange with a routing key.
 // See QueueAddress and ExchangeAddress for more information.
@@ -133,6 +141,7 @@ func Dial(ctx context.Context, addresses []string, connOptions *AmqpConnOptions,
 		lifeCycle:         NewLifeCycle(),
 		amqpConnOptions:   connOptions,
 		entitiesTracker:   newEntitiesTracker(),
+		featuresAvailable: newFeaturesAvailable(),
 	}
 	tmp := make([]string, len(addresses))
 	copy(tmp, addresses)
@@ -188,6 +197,20 @@ func (a *AmqpConnection) open(ctx context.Context, addresses []string, connOptio
 			Error("Failed to open connection", ExtractWithoutPassword(addr), err)
 			continue
 		}
+		a.properties = azureConnection.Properties()
+		err = a.featuresAvailable.ParseProperties(a.properties)
+		if err != nil {
+			Warn("Validate properties Error.", ExtractWithoutPassword(addr), err)
+		}
+
+		if !a.featuresAvailable.is4OrMore {
+			Warn("The server version is less than 4.0.0", ExtractWithoutPassword(addr))
+		}
+
+		if !a.featuresAvailable.isRabbitMQ {
+			Warn("The server is not RabbitMQ", ExtractWithoutPassword(addr))
+		}
+
 		Debug("Connected to", ExtractWithoutPassword(addr))
 		break
 	}

pkg/rabbitmqamqp/amqp_connection_test.go

@@ -24,6 +24,8 @@ var _ = Describe("AMQP connection Test", func() {
 			SASLType: amqp.SASLTypePlain("guest", "guest")})
 
 		Expect(err).To(BeNil())
+		Expect(connection.Properties()["product"]).To(Equal("RabbitMQ"))
+
 		err = connection.Close(context.Background())
 		Expect(err).To(BeNil())
 	})

pkg/rabbitmqamqp/features_available.go

@@ -0,0 +1,98 @@
+package rabbitmqamqp
+
+import (
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+type Version struct {
+	Major int
+	Minor int
+	Patch int
+}
+
+func (v Version) Compare(other Version) int {
+	if v.Major != other.Major {
+		return v.Major - other.Major
+	}
+	if v.Minor != other.Minor {
+		return v.Minor - other.Minor
+	}
+	return v.Patch - other.Patch
+}
+
+type featuresAvailable struct {
+	is4OrMore  bool
+	is41OrMore bool
+	isRabbitMQ bool
+}
+
+func newFeaturesAvailable() *featuresAvailable {
+	return &featuresAvailable{}
+}
+
+func (f *featuresAvailable) ParseProperties(properties map[string]any) error {
+	if properties["version"] == nil {
+		return fmt.Errorf("missing version property")
+	}
+
+	version := extractVersion(properties["version"].(string))
+	if version == "" {
+		return fmt.Errorf("invalid version format: %s", version)
+	}
+
+	f.is4OrMore = isVersionGreaterOrEqual(version, "4.0.0")
+	f.is41OrMore = isVersionGreaterOrEqual(version, "4.1.0")
+	f.isRabbitMQ = strings.EqualFold(properties["product"].(string), "RabbitMQ")
+	return nil
+}
+
+func extractVersion(fullVersion string) string {
+	pattern := `(\d+\.\d+\.\d+)`
+	regex := regexp.MustCompile(pattern)
+	match := regex.FindStringSubmatch(fullVersion)
+
+	if len(match) > 1 {
+		return match[1]
+	}
+	return ""
+}
+
+func parseVersion(version string) (Version, error) {
+	parts := strings.Split(version, ".")
+	if len(parts) != 3 {
+		return Version{}, fmt.Errorf("invalid version format: %s", version)
+	}
+
+	major, err := strconv.Atoi(parts[0])
+	if err != nil {
+		return Version{}, fmt.Errorf("invalid major version: %s", parts[0])
+	}
+
+	minor, err := strconv.Atoi(parts[1])
+	if err != nil {
+		return Version{}, fmt.Errorf("invalid minor version: %s", parts[1])
+	}
+
+	patch, err := strconv.Atoi(parts[2])
+	if err != nil {
+		return Version{}, fmt.Errorf("invalid patch version: %s", parts[2])
+	}
+
+	return Version{Major: major, Minor: minor, Patch: patch}, nil
+}
+
+func isVersionGreaterOrEqual(version, target string) bool {
+	v1, err := parseVersion(version)
+	if err != nil {
+		return false
+	}
+
+	v2, err := parseVersion(target)
+	if err != nil {
+		return false
+	}
+	return v1.Compare(v2) >= 0
+}

pkg/rabbitmqamqp/features_available_test.go

@@ -0,0 +1,113 @@
+package rabbitmqamqp
+
+import (
+	"fmt"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Available Features", func() {
+
+	It("Parse Version", func() {
+		v, err := parseVersion("1.2.3")
+		Expect(err).NotTo(HaveOccurred())
+		Expect(v).To(Equal(Version{Major: 1, Minor: 2, Patch: 3}))
+
+		_, err = parseVersion("1.2")
+		Expect(err).To(HaveOccurred())
+		Expect(fmt.Sprintf("%s", err)).To(ContainSubstring("invalid version format: 1.2"))
+
+		_, err = parseVersion("error.3.3")
+		Expect(err).To(HaveOccurred())
+		Expect(fmt.Sprintf("%s", err)).To(ContainSubstring("invalid major version: error"))
+
+		_, err = parseVersion("1.error.3")
+		Expect(err).To(HaveOccurred())
+		Expect(fmt.Sprintf("%s", err)).To(ContainSubstring("invalid minor version: error"))
+
+		_, err = parseVersion("1.2.error")
+		Expect(err).To(HaveOccurred())
+		Expect(fmt.Sprintf("%s", err)).To(ContainSubstring("invalid patch version: error"))
+
+		v, err = parseVersion(extractVersion("3.12.1-rc1"))
+		Expect(err).NotTo(HaveOccurred())
+		Expect(v).To(Equal(Version{Major: 3, Minor: 12, Patch: 1}))
+
+		v, err = parseVersion(extractVersion("3.13.1-alpha.234"))
+		Expect(err).NotTo(HaveOccurred())
+		Expect(v).To(Equal(Version{Major: 3, Minor: 13, Patch: 1}))
+	})
+
+	It("Is Version Greater Or Equal", func() {
+		Expect(isVersionGreaterOrEqual("1.2.3", "1.2.3")).To(BeTrue())
+		Expect(isVersionGreaterOrEqual("1.2.3", "1.2.2")).To(BeTrue())
+		Expect(isVersionGreaterOrEqual("1.2.3", "1.2.4")).To(BeFalse())
+		Expect(isVersionGreaterOrEqual("1.2.3", "1.3.3")).To(BeFalse())
+		Expect(isVersionGreaterOrEqual("1.2.3", "2.2.3")).To(BeFalse())
+		Expect(isVersionGreaterOrEqual("3.1.3-alpha.1", "2.2.3")).To(BeFalse())
+		Expect(isVersionGreaterOrEqual("3.3.3-rc.1", "2.2.3")).To(BeFalse())
+
+		Expect(isVersionGreaterOrEqual("error.3.2", "2.2.3")).To(BeFalse())
+		Expect(isVersionGreaterOrEqual("4.3.2", "2.error.3")).To(BeFalse())
+
+	})
+
+	It("Available Features check Version", func() {
+		var availableFeatures = newFeaturesAvailable()
+		Expect(availableFeatures).NotTo(BeNil())
+		Expect(availableFeatures.ParseProperties(map[string]any{})).NotTo(BeNil())
+
+		Expect(availableFeatures.ParseProperties(map[string]any{
+			"version": "3.9.0",
+			"product": "RabbitMQ",
+		})).To(BeNil())
+		Expect(availableFeatures.is4OrMore).To(BeFalse())
+		Expect(availableFeatures.is41OrMore).To(BeFalse())
+		Expect(availableFeatures.isRabbitMQ).To(BeTrue())
+
+		Expect(availableFeatures.ParseProperties(map[string]any{
+			"version": "3.11.0",
+			"product": "RabbitMQ",
+		})).To(BeNil())
+		Expect(availableFeatures.is4OrMore).To(BeFalse())
+		Expect(availableFeatures.is41OrMore).To(BeFalse())
+		Expect(availableFeatures.isRabbitMQ).To(BeTrue())
+
+		Expect(availableFeatures.ParseProperties(map[string]any{
+			"version": "4.0.6-rc.1",
+			"product": "RabbitMQ",
+		})).To(BeNil())
+
+		Expect(availableFeatures.is4OrMore).To(BeTrue())
+		Expect(availableFeatures.is41OrMore).To(BeFalse())
+		Expect(availableFeatures.isRabbitMQ).To(BeTrue())
+
+		Expect(availableFeatures.ParseProperties(map[string]any{
+			"version": "4.1.0",
+			"product": "RabbitMQ",
+		})).To(BeNil())
+
+		Expect(availableFeatures.is4OrMore).To(BeTrue())
+		Expect(availableFeatures.is41OrMore).To(BeTrue())
+		Expect(availableFeatures.isRabbitMQ).To(BeTrue())
+
+		Expect(availableFeatures.ParseProperties(map[string]any{
+			"version": "4.1.0-beta.1",
+			"product": "Boh",
+		})).To(BeNil())
+
+		Expect(availableFeatures.is4OrMore).To(BeTrue())
+		Expect(availableFeatures.is41OrMore).To(BeTrue())
+		Expect(availableFeatures.isRabbitMQ).To(BeFalse())
+
+		Expect(availableFeatures.ParseProperties(map[string]any{
+			"version": "4.1.0-rc.8",
+			"product": "rabbitmq",
+		})).To(BeNil())
+
+		Expect(availableFeatures.is4OrMore).To(BeTrue())
+		Expect(availableFeatures.is41OrMore).To(BeTrue())
+		Expect(availableFeatures.isRabbitMQ).To(BeTrue())
+
+	})
+})