Add basic SASL and TLS support for Kafka cloud events

Signed-off-by: Jason Parraga <[email protected]>

charts/flyte-core/README.md

@@ -59,6 +59,20 @@ helm install gateway bitnami/contour -n flyte
 | cloud_events.enable | bool | `false` |  |
 | cloud_events.eventsPublisher.eventTypes[0] | string | `"all"` |  |
 | cloud_events.eventsPublisher.topicName | string | `"arn:aws:sns:us-east-2:123456:123-my-topic"` |  |
+| cloud_events.kafka | object | `{"brokers":["mybroker:443"],"saslConfig":{"enabled":false,"handshake":true,"mechanism":"PLAIN","password":"","user":"kafka"},"tlsConfig":{"certPath":"/etc/ssl/certs/kafka-client.crt","enabled":false,"keyPath":"/etc/ssl/certs/kafka-client.key"},"version":"3.7.0"}` | Configuration for sending cloud events to Kafka |
+| cloud_events.kafka.brokers | list | `["mybroker:443"]` | The kafka brokers to talk to |
+| cloud_events.kafka.saslConfig | object | `{"enabled":false,"handshake":true,"mechanism":"PLAIN","password":"","user":"kafka"}` | SASL based authentication |
+| cloud_events.kafka.saslConfig.enabled | bool | `false` | Whether to use SASL authentication |
+| cloud_events.kafka.saslConfig.handshake | bool | `true` | Whether the send the SASL handsahke first |
+| cloud_events.kafka.saslConfig.mechanism | string | `"PLAIN"` | Which SASL mechanism to use. Defaults to PLAIN |
+| cloud_events.kafka.saslConfig.password | string | `""` | The password for the kafka user |
+| cloud_events.kafka.saslConfig.user | string | `"kafka"` | The kafka user |
+| cloud_events.kafka.tlsConfig | object | `{"certPath":"/etc/ssl/certs/kafka-client.crt","enabled":false,"keyPath":"/etc/ssl/certs/kafka-client.key"}` | Certificate based authentication |
+| cloud_events.kafka.tlsConfig.certPath | string | `"/etc/ssl/certs/kafka-client.crt"` | Path to the client certificate |
+| cloud_events.kafka.tlsConfig.enabled | bool | `false` | Whether to use certificate based authentication or TLS |
+| cloud_events.kafka.tlsConfig.keyPath | string | `"/etc/ssl/certs/kafka-client.key"` | Path to the client private key |
+| cloud_events.kafka.version | string | `"3.7.0"` | The version of Kafka |
+| cloud_events.secretName | string | `""` | The name of the secret to use to alternatively load in cloud events configuration via a secret. Useful when the configuration contains secrets. |
 | cloud_events.type | string | `"aws"` |  |
 | cluster_resource_manager | object | `{"config":{"cluster_resources":{"customData":[{"production":[{"projectQuotaCpu":{"value":"5"}},{"projectQuotaMemory":{"value":"4000Mi"}}]},{"staging":[{"projectQuotaCpu":{"value":"2"}},{"projectQuotaMemory":{"value":"3000Mi"}}]},{"development":[{"projectQuotaCpu":{"value":"4"}},{"projectQuotaMemory":{"value":"3000Mi"}}]}],"refreshInterval":"5m","standaloneDeployment":false,"templatePath":"/etc/flyte/clusterresource/templates"}},"enabled":true,"nodeSelector":{},"podAnnotations":{},"podEnv":{},"podLabels":{},"prometheus":{"enabled":false,"path":"/metrics","port":10254},"resources":{},"service_account_name":"flyteadmin","standaloneDeployment":false,"templates":[{"key":"aa_namespace","value":"apiVersion: v1\nkind: Namespace\nmetadata:\n  name: {{ namespace }}\nspec:\n  finalizers:\n  - kubernetes\n"},{"key":"ab_project_resource_quota","value":"apiVersion: v1\nkind: ResourceQuota\nmetadata:\n  name: project-quota\n  namespace: {{ namespace }}\nspec:\n  hard:\n    limits.cpu: {{ projectQuotaCpu }}\n    limits.memory: {{ projectQuotaMemory }}\n"}]}` | Configuration for the Cluster resource manager component. This is an optional component, that enables automatic cluster configuration. This is useful to set default quotas, manage namespaces etc that map to a project/domain |
 | cluster_resource_manager.config | object | `{"cluster_resources":{"customData":[{"production":[{"projectQuotaCpu":{"value":"5"}},{"projectQuotaMemory":{"value":"4000Mi"}}]},{"staging":[{"projectQuotaCpu":{"value":"2"}},{"projectQuotaMemory":{"value":"3000Mi"}}]},{"development":[{"projectQuotaCpu":{"value":"4"}},{"projectQuotaMemory":{"value":"3000Mi"}}]}],"refreshInterval":"5m","standaloneDeployment":false,"templatePath":"/etc/flyte/clusterresource/templates"}}` | Configmap for ClusterResource parameters |

charts/flyte-core/templates/admin/configmap.yaml

@@ -79,7 +79,7 @@ data:
     externalEvents: {{ tpl (toYaml .) $ | nindent 6 }}
 {{- end }}
 {{- end }}
-{{- if .Values.cloud_events.enable }}
+{{- if and .Values.cloud_events.enable (not .Values.cloud_events.secretName) }}
 {{- with .Values.cloud_events }}
   cloud_events.yaml: |
     cloudEvents: {{ tpl (toYaml .) $ | nindent 6 }}

charts/flyte-core/templates/admin/deployment.yaml

@@ -196,6 +196,10 @@ spec:
                 name: flyte-admin-base-config
             - configMap:
                 name: flyte-admin-clusters-config
+            {{- if .Values.cloud_events.secretName }}
+            - secret:
+                name: {{ .Values.cloud_events.secretName }}
+            {{- end }}
         name: clusters-config-volume
       {{- if .Values.cluster_resource_manager.enabled }}
       - configMap:

charts/flyte-core/values.yaml

@@ -943,6 +943,9 @@ external_events:
 # Cloud events are used to send events (unprocessed, as Admin see them) in cloud event format to
 # an SNS topic (or gcp equivalent)
 cloud_events:
+  # -- The name of the secret to use to alternatively load in cloud events configuration via a secret. Useful when the
+  # configuration contains secrets.
+  secretName: ""
   enable: false
   type: aws
   aws:
@@ -953,6 +956,33 @@ cloud_events:
     topicName: "arn:aws:sns:us-east-2:123456:123-my-topic"
     eventTypes:
       - all  # Or workflow, node, task. Or "*"
+  # -- Configuration for sending cloud events to Kafka
+  kafka:
+    # -- The version of Kafka
+    version: "3.7.0"
+    # -- The kafka brokers to talk to
+    brokers:
+      - mybroker:443
+    # -- SASL based authentication
+    saslConfig:
+      # -- Whether to use SASL authentication
+      enabled: false
+      # -- The kafka user
+      user: kafka
+      # -- The password for the kafka user
+      password: ""
+      # -- Whether the send the SASL handsahke first
+      handshake: true
+      # -- Which SASL mechanism to use. Defaults to PLAIN
+      mechanism: PLAIN
+    # -- Certificate based authentication
+    tlsConfig:
+      # -- Whether to use certificate based authentication or TLS
+      enabled: false
+      # -- Path to the client certificate
+      certPath: /etc/ssl/certs/kafka-client.crt
+      # -- Path to the client private key
+      keyPath: /etc/ssl/certs/kafka-client.key
 
 # -- Configuration for the Cluster resource manager component. This is an optional component, that enables automatic
 # cluster configuration. This is useful to set default quotas, manage namespaces etc that map to a project/domain

docker/sandbox-bundled/manifests/complete-agent.yaml

@@ -816,7 +816,7 @@ type: Opaque
 ---
 apiVersion: v1
 data:
-  haSharedSecret: cmRzbzQ4N3RQaWhuMk00OA==
+  haSharedSecret: RFBFbkg4ZHQ4WEx3YlF5cQ==
   proxyPassword: ""
   proxyUsername: ""
 kind: Secret
@@ -1413,7 +1413,7 @@ spec:
     metadata:
       annotations:
         checksum/config: 8f50e768255a87f078ba8b9879a0c174c3e045ffb46ac8723d2eedbe293c8d81
-        checksum/secret: 51528951e92c2bf712bbde990941593aae1fcf72144a1fe944c312ddad86e161
+        checksum/secret: 298357119cf08686c6a9cdaef9c94114dd0f6500b379a247b434573ce51b0ffe
       labels:
         app: docker-registry
         release: flyte-sandbox

docker/sandbox-bundled/manifests/complete.yaml

@@ -798,7 +798,7 @@ type: Opaque
 ---
 apiVersion: v1
 data:
-  haSharedSecret: T1I2Q2tTcmREVG15MldGUQ==
+  haSharedSecret: dWRjaWtia3YyRDgzSlN3RA==
   proxyPassword: ""
   proxyUsername: ""
 kind: Secret
@@ -1362,7 +1362,7 @@ spec:
     metadata:
       annotations:
         checksum/config: 8f50e768255a87f078ba8b9879a0c174c3e045ffb46ac8723d2eedbe293c8d81
-        checksum/secret: d723e395edc0fd2f221b9088efffe0d1f4dfabdef9892065fdabe12233362cf5
+        checksum/secret: 3720b7dbfd4a13228a83cec5a65ef7a90c6a4e8b315f02133fcb6c21c6ee4e7f
       labels:
         app: docker-registry
         release: flyte-sandbox

docker/sandbox-bundled/manifests/dev.yaml

@@ -499,7 +499,7 @@ metadata:
 ---
 apiVersion: v1
 data:
-  haSharedSecret: ZnltNHNiZ01NRFNkb1RlMA==
+  haSharedSecret: ZXRkMjhyTGV4M1FPbXJNTA==
   proxyPassword: ""
   proxyUsername: ""
 kind: Secret
@@ -934,7 +934,7 @@ spec:
     metadata:
       annotations:
         checksum/config: 8f50e768255a87f078ba8b9879a0c174c3e045ffb46ac8723d2eedbe293c8d81
-        checksum/secret: eeab364c20a0e8ad5a1526ccd7ddbd1d5a442087e7267c4d761279102b81be21
+        checksum/secret: 25478efd95bcb669b5320d1b479d1d794f60d8579748f9fea8a5b0fc2a80eb04
       labels:
         app: docker-registry
         release: flyte-sandbox

flyteadmin/.golangci.yml

@@ -39,3 +39,5 @@ issues:
   exclude-rules:
     - path: pkg/workflowengine/impl/prepare_execution.go
       text: "copies lock"
+    - path: pkg/runtime/interfaces/application_configuration.go
+      text: "G402: TLS InsecureSkipVerify may be true."

flyteadmin/pkg/async/cloudevent/factory.go

@@ -73,12 +73,7 @@ func NewCloudEventsPublisher(ctx context.Context, db repositoryInterfaces.Reposi
 
 	case cloudEventImplementations.Kafka:
 		saramaConfig := sarama.NewConfig()
-		var err error
-		saramaConfig.Version, err = sarama.ParseKafkaVersion(cloudEventsConfig.KafkaConfig.Version)
-		if err != nil {
-			logger.Fatalf(ctx, "failed to parse kafka version, %v", err)
-			panic(err)
-		}
+		cloudEventsConfig.KafkaConfig.UpdateSaramaConfig(ctx, saramaConfig)
 		kafkaSender, err := kafka_sarama.NewSender(cloudEventsConfig.KafkaConfig.Brokers, saramaConfig, cloudEventsConfig.EventsPublisherConfig.TopicName)
 		if err != nil {
 			panic(err)

flyteadmin/pkg/runtime/interfaces/application_configuration.go

@@ -1,6 +1,10 @@
 package interfaces
 
 import (
+	"context"
+	"crypto/tls"
+
+	"github.com/Shopify/sarama"
 	"github.com/golang/protobuf/ptypes/wrappers"
 	"golang.org/x/time/rate"
 
@@ -231,11 +235,75 @@ type GCPConfig struct {
 	ProjectID string `json:"projectId"`
 }
 
+// This section holds SASL config for Kafka
+type SASLConfig struct {
+	// Whether to use SASL
+	Enabled bool `json:"enabled"`
+	// The username
+	User string `json:"user"`
+	// The password
+	Password  string `json:"password"`
+	Handshake bool   `json:"handshake"`
+	// Which SASL Mechanism to use. Defaults to PLAIN
+	Mechanism sarama.SASLMechanism `json:"mechanism"`
+}
+
+// This section holds TLS config for Kafka clients
+type TLSConfig struct {
+	// Whether to use TLS
+	Enabled bool `json:"enabled"`
+	// Whether to skip certificate verification
+	InsecureSkipVerify bool `json:"insecureSkipVerify"`
+	// The location of the client certificate
+	CertPath string `json:"certPath"`
+	// The location of the client private key
+	KeyPath string `json:"keyPath"`
+}
+
+// This section holds configs for Kafka clients
 type KafkaConfig struct {
 	// The version of Kafka, e.g. 2.1.0, 0.8.2.0
 	Version string `json:"version"`
 	// kafka broker addresses
 	Brokers []string `json:"brokers"`
+	// sasl config
+	SASLConfig SASLConfig `json:"saslConfig"`
+	// tls config
+	TLSConfig TLSConfig `json:"tlsConfig"`
+}
+
+func (k KafkaConfig) UpdateSaramaConfig(ctx context.Context, s *sarama.Config) {
+	var err error
+	s.Version, err = sarama.ParseKafkaVersion(k.Version)
+	if err != nil {
+		panic(err)
+	}
+
+	if k.SASLConfig.Enabled {
+		s.Net.SASL.Enable = true
+		s.Net.SASL.User = k.SASLConfig.User
+		s.Net.SASL.Password = k.SASLConfig.Password
+		s.Net.SASL.Handshake = k.SASLConfig.Handshake
+
+		if k.SASLConfig.Mechanism == "" {
+			k.SASLConfig.Mechanism = sarama.SASLTypePlaintext
+		}
+		s.Net.SASL.Mechanism = k.SASLConfig.Mechanism
+	}
+
+	if k.TLSConfig.Enabled {
+		s.Net.TLS.Enable = true
+		s.Net.TLS.Config = &tls.Config{
+			InsecureSkipVerify: k.TLSConfig.InsecureSkipVerify,
+		}
+		if k.TLSConfig.KeyPath != "" && k.TLSConfig.CertPath != "" {
+			cert, err := tls.LoadX509KeyPair(k.TLSConfig.CertPath, k.TLSConfig.KeyPath)
+			if err != nil {
+				panic(err)
+			}
+			s.Net.TLS.Config.Certificates = []tls.Certificate{cert}
+		}
+	}
 }
 
 // This section holds configuration for the event scheduler used to schedule workflow executions.