Merge pull request #3588 from VajiraPrabuddhaka/amqp-websocket

[choreo] Support AMQP over websockets for connecting ASB

adapter/config/default_config.go

@@ -361,9 +361,10 @@ var defaultConfig = &Config{
 		RetryInterval:       5,
 		SkipSSLVerification: false,
 		BrokerConnectionParameters: brokerConnectionParameters{
-			EventListeningEndpoints: []string{"amqp://admin:$env{cp_admin_pwd}@apim:5672?retries='10'&connectdelay='30'"},
-			ReconnectInterval:       5000, //in milli seconds
-			ReconnectRetryCount:     60,
+			EventListeningEndpoints:   []string{"amqp://admin:$env{cp_admin_pwd}@apim:5672?retries='10'&connectdelay='30'"},
+			AmqpOverWebsocketsEnabled: false,
+			ReconnectInterval:         5000, //in milli seconds
+			ReconnectRetryCount:       60,
 		},
 		SendRevisionUpdate: false,
 		HTTPClient: httpClient{

adapter/config/types.go

@@ -571,9 +571,10 @@ type globalAdapter struct {
 }
 
 type brokerConnectionParameters struct {
-	EventListeningEndpoints []string
-	ReconnectInterval       time.Duration
-	ReconnectRetryCount     int
+	EventListeningEndpoints   []string
+	AmqpOverWebsocketsEnabled bool
+	ReconnectInterval         time.Duration
+	ReconnectRetryCount       int
 }
 
 // Configuration for Enforcer admin rest api

adapter/go.mod

@@ -32,6 +32,7 @@ require (
 	google.golang.org/protobuf v1.34.1
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0
 	gopkg.in/yaml.v2 v2.4.0
+	nhooyr.io/websocket v1.8.7
 )
 
 require (
@@ -52,6 +53,7 @@ require (
 	github.com/go-openapi/jsonreference v0.19.3 // indirect
 	github.com/go-stack/stack v1.8.0 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/klauspost/compress v1.13.6 // indirect
 	github.com/lestrrat-go/backoff/v2 v2.0.8 // indirect
 	github.com/lestrrat-go/blackmagic v1.0.2 // indirect
 	github.com/lestrrat-go/httpcc v1.0.1 // indirect

adapter/go.sum

@@ -59,6 +59,10 @@ github.com/getkin/kin-openapi v0.8.0 h1:a6TQjTqwkyscC4/hShJX7WhCVE+4bi9lzw61XHQW
 github.com/getkin/kin-openapi v0.8.0/go.mod h1:zZQMFkVgRHCdhgb6ihCTIo9dyDZFvX0k/xAKqw1FhPw=
 github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
+github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
+github.com/gin-gonic/gin v1.6.3 h1:ahKqKTFpO5KTPHxWZjEdPScmYaGtLo8Y4DMHoEsnp14=
+github.com/gin-gonic/gin v1.6.3/go.mod h1:75u5sXoLsGZoRN5Sgbi1eraJ4GU3++wFwWzhwvtwp4M=
 github.com/globalsign/mgo v0.0.0-20180905125535-1ca0a4f7cbcb/go.mod h1:xkRDCp4j0OGD1HRkm4kmhM+pmpv3AKq5SU7GMg4oO/Q=
 github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8/go.mod h1:xkRDCp4j0OGD1HRkm4kmhM+pmpv3AKq5SU7GMg4oO/Q=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
@@ -132,6 +136,13 @@ github.com/go-openapi/validate v0.19.3/go.mod h1:90Vh6jjkTn+OT1Eefm0ZixWNFjhtOH7
 github.com/go-openapi/validate v0.19.10/go.mod h1:RKEZTUWDkxKQxN2jDT7ZnZi2bhZlbNMAuKvKB+IaGx8=
 github.com/go-openapi/validate v0.19.11 h1:8lCr0b9lNWKjVjW/hSZZvltUy+bULl7vbnCTsOzlhPo=
 github.com/go-openapi/validate v0.19.11/go.mod h1:Rzou8hA/CBw8donlS6WNEUQupNvUZ0waH08tGe6kAQ4=
+github.com/go-playground/assert/v2 v2.0.1/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
+github.com/go-playground/locales v0.13.0 h1:HyWk6mgj5qFqCT5fjGBuRArbVDfE4hi8+e8ceBS/t7Q=
+github.com/go-playground/locales v0.13.0/go.mod h1:taPMhCMXrRLJO55olJkUXHZBHCxTMfnGwq/HNwmWNS8=
+github.com/go-playground/universal-translator v0.17.0 h1:icxd5fm+REJzpZx7ZfpaD876Lmtgy7VtROAbHHXk8no=
+github.com/go-playground/universal-translator v0.17.0/go.mod h1:UkSxE5sNxxRwHyU+Scu5vgOQjsIJAF8j9muTVoKLVtA=
+github.com/go-playground/validator/v10 v10.2.0 h1:KgJ0snyC2R9VXYN2rneOtQcw5aHQB1Vv0sFl1UcHBOY=
+github.com/go-playground/validator/v10 v10.2.0/go.mod h1:uOYAAleCW8F/7oMFd6aG0GOhaH6EGOAJShg8Id5JGkI=
 github.com/go-stack/stack v1.8.0 h1:5SgMzNM5HxrEjV0ww2lTmX6E2Izsfxas4+YHWRs3Lsk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/gobuffalo/attrs v0.0.0-20190224210810-a9411de4debd/go.mod h1:4duuawTqi2wkkpB4ePgWMaai6/Kc6WEz83bhFwpHzj0=
@@ -158,6 +169,12 @@ github.com/gobuffalo/packd v0.1.0/go.mod h1:M2Juc+hhDXf/PnmBANFCqx4DM3wRbgDvnVWe
 github.com/gobuffalo/packr/v2 v2.0.9/go.mod h1:emmyGweYTm6Kdper+iywB6YK5YzuKchGtJQZ0Odn4pQ=
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 github.com/gobuffalo/syncx v0.0.0-20190224160051-33c29581e754/go.mod h1:HhnNqWY95UYwwW3uSASeV7vtgYkT2t16hJgV3AEPUpw=
+github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee h1:s+21KNqlpePfkah2I+gwHF8xmJWRjooY+5248k6m4A0=
+github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee/go.mod h1:L0fX3K22YWvt/FAX9NnzrNzcI4wNYi9Yku4O0LKYflo=
+github.com/gobwas/pool v0.2.0 h1:QEmUOlnSjWtnpRGHF3SauEiOsy82Cup83Vf2LcMlnc8=
+github.com/gobwas/pool v0.2.0/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw=
+github.com/gobwas/ws v1.0.2 h1:CoAavW/wd/kulfZmSIBt6p24n4j7tHgNVCjsfHVNUbo=
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 github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
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@@ -170,33 +187,41 @@ github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+Licev
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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+github.com/golang/protobuf v1.3.5/go.mod h1:6O5/vntMXwX2lRkT1hjjk0nAC1IDOTvTlVgjlRvqsdk=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
 github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
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 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
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@@ -212,6 +237,8 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
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@@ -233,10 +260,16 @@ github.com/mailru/easyjson v0.7.1 h1:mdxE1MF9o53iCb2Ghj1VfWvh7ZOwHpnVG/xwXrV90U8
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@@ -288,6 +321,10 @@ github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsT
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@@ -372,6 +409,7 @@ golang.org/x/sys v0.0.0-20190531175056-4c3a928424d2/go.mod h1:h1NjWce9XRLGQEsW7w
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 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -400,6 +438,7 @@ golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/text v0.15.0 h1:h1V/4gjBv8v9cjcR6+AR5+/cIYK5N/WAgiv4xlsEtAk=
 golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20181030221726-6c7e314b6563/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=

adapter/internal/messaging/azure_listener.go

@@ -19,6 +19,10 @@
 package messaging
 
 import (
+	"context"
+	"github.com/Azure/azure-sdk-for-go/sdk/messaging/azservicebus"
+	"net"
+	"nhooyr.io/websocket"
 	"time"
 
 	"github.com/wso2/product-microgateway/adapter/config"
@@ -37,13 +41,30 @@ func InitiateAndProcessEvents(config *config.Config) {
 	var err error
 	var reconnectRetryCount = config.ControlPlane.BrokerConnectionParameters.ReconnectRetryCount
 	var reconnectInterval = config.ControlPlane.BrokerConnectionParameters.ReconnectInterval
+
 	connectionString := config.ControlPlane.BrokerConnectionParameters.EventListeningEndpoints[0]
-	subscriptionMetaDataList, err := msg.InitiateBrokerConnectionAndValidate(connectionString, componentName,
+	var clientOpts *azservicebus.ClientOptions
+	if config.ControlPlane.BrokerConnectionParameters.AmqpOverWebsocketsEnabled {
+		logger.LoggerMgw.Info("AMQP over Websockets is enabled. Initiating brokers with AMQP over Websockets.")
+		newWebSocketConnFn := func(ctx context.Context, args azservicebus.NewWebSocketConnArgs) (net.Conn, error) {
+			opts := &websocket.DialOptions{Subprotocols: []string{"amqp"}}
+			wssConn, _, err := websocket.Dial(ctx, args.Host, opts)
+			if err != nil {
+				return nil, err
+			}
+			return websocket.NetConn(ctx, wssConn, websocket.MessageBinary), nil
+		}
+		clientOpts = &azservicebus.ClientOptions{
+			NewWebSocketConn: newWebSocketConnFn,
+		}
+	}
+
+	subscriptionMetaDataList, err := msg.InitiateBrokerConnectionAndValidate(connectionString, clientOpts, componentName,
 		reconnectRetryCount, reconnectInterval*time.Millisecond, subscriptionIdleTimeDuration)
 	health.SetControlPlaneBrokerStatus(err == nil)
 	if err == nil {
 		logger.LoggerMgw.Info("Service bus meta data successfully initialized.")
-		msg.InitiateConsumers(connectionString, subscriptionMetaDataList, reconnectInterval*time.Millisecond)
+		msg.InitiateConsumers(connectionString, clientOpts, subscriptionMetaDataList, reconnectInterval*time.Millisecond)
 		go handleAzureNotification()
 		go handleAzureTokenRevocation()
 		go handleAzureOrganizationPurge()

adapter/pkg/messaging/azure_connection.go

@@ -76,13 +76,13 @@ func init() {
 
 // InitiateBrokerConnectionAndValidate to initiate connection and validate azure service bus constructs to
 // further process
-func InitiateBrokerConnectionAndValidate(connectionString string, componentName string, reconnectRetryCount int,
+func InitiateBrokerConnectionAndValidate(connectionString string, clientOptions *asb.ClientOptions, componentName string, reconnectRetryCount int,
 	reconnectInterval time.Duration, subscriptionIdleTimeDuration string) ([]Subscription, error) {
 	subscriptionMetaDataList := make([]Subscription, 0)
 	subProps := &admin.SubscriptionProperties{
 		AutoDeleteOnIdle: &subscriptionIdleTimeDuration,
 	}
-	_, err := asb.NewClientFromConnectionString(connectionString, nil)
+	_, err := asb.NewClientFromConnectionString(connectionString, clientOptions)
 
 	if err == nil {
 		if logger.LoggerMsg.IsLevelEnabled(logrus.DebugLevel) {
@@ -115,10 +115,10 @@ func InitiateBrokerConnectionAndValidate(connectionString string, componentName
 }
 
 // InitiateConsumers to pass event consumption
-func InitiateConsumers(connectionString string, subscriptionMetaDataList []Subscription, reconnectInterval time.Duration) {
+func InitiateConsumers(connectionString string, clientOptions *asb.ClientOptions, subscriptionMetaDataList []Subscription, reconnectInterval time.Duration) {
 	for _, subscriptionMetaData := range subscriptionMetaDataList {
 		go func(subscriptionMetaData Subscription) {
-			startBrokerConsumer(connectionString, subscriptionMetaData, reconnectInterval)
+			startBrokerConsumer(connectionString, clientOptions, subscriptionMetaData, reconnectInterval)
 		}(subscriptionMetaData)
 	}
 }

adapter/pkg/messaging/azure_listener.go

@@ -27,7 +27,7 @@ import (
 	logger "github.com/wso2/product-microgateway/adapter/pkg/loggers"
 )
 
-func startBrokerConsumer(connectionString string, sub Subscription, reconnectInterval time.Duration) {
+func startBrokerConsumer(connectionString string, clientOptions *asb.ClientOptions, sub Subscription, reconnectInterval time.Duration) {
 	var topic = sub.topicName
 	var subName = sub.subscriptionName
 
@@ -47,7 +47,7 @@ func startBrokerConsumer(connectionString string, sub Subscription, reconnectInt
 
 	for {
 		// initializing the receiver client
-		subClient, err := asb.NewClientFromConnectionString(connectionString, nil)
+		subClient, err := asb.NewClientFromConnectionString(connectionString, clientOptions)
 		if err != nil {
 			logger.LoggerMsg.Errorf("Failed to create ASB client for %s , topic:  %s. error: %v.",
 				subName, topic, err)

resources/conf/config.toml.template

@@ -522,6 +522,7 @@ enabled = true
   # Message broker connection URL of the control plane
   [controlPlane.brokerConnectionParameters]
     eventListeningEndpoints = ["amqp://admin:$env{cp_admin_pwd}@apim:5672?retries='10'&connectdelay='30'"]
+    amqpOverWebsocketsEnabled = false
     reconnectInterval = 5000
     reconnectRetryCount = 60
   # Worker Pool for sending requests to API Manager to reduce the load if the adapter tries to reconnect.