Filtering Genesys Cloud EventBridge Interaction Events with Go and Forwarding to Kinesis

What You Will Build

• A Go service that consumes Genesys Cloud interaction events from AWS EventBridge, applies complex boolean filters to drop irrelevant payloads, enriches matching events, and writes them to an AWS Kinesis data stream using custom partition keys for downstream sharding.
• Uses the AWS SDK for Go v2 and the native EventBridge JSON envelope schema.
• Covers Go 1.21+ with production-grade error handling, retry logic, and context management.

Prerequisites

• AWS IAM role attached to the execution environment with kinesis:PutRecords, kinesis:DescribeStreamSummary, and events:ReceiveEvents permissions.
• Genesys Cloud EventBridge integration configured in the Genesys Cloud admin console. The integration requires the OAuth scope analytics:interaction:read on the Genesys Cloud side to publish interaction lifecycle events.
• Go 1.21 or later installed.
• External dependencies: github.com/aws/aws-sdk-go-v2/config, github.com/aws/aws-sdk-go-v2/service/kinesis, github.com/aws/aws-sdk-go-v2/service/kinesis/types.
• An active AWS Kinesis stream named genesys-interactions-stream.

Authentication Setup

EventBridge delivers events to HTTP endpoints or SQS queues using IAM authentication. The Go processor does not use OAuth tokens for consuming events. Authentication relies on the AWS credential chain. The following configuration loads credentials from environment variables, shared credential files, or ECS EC2 instance profiles.

package main

import (
	"context"
	"fmt"
	"log"
	"os"

	"github.com/aws/aws-sdk-go-v2/config"
	"github.com/aws/aws-sdk-go-v2/service/kinesis"
)

func initAWS(ctx context.Context) (*kinesis.Client, error) {
	cfg, err := config.LoadDefaultConfig(ctx,
		config.WithRegion("us-east-1"),
		config.WithRetryMode(config.RetryModeAdaptive),
	)
	if err != nil {
		return nil, fmt.Errorf("failed to load AWS config: %w", err)
	}

	client := kinesis.NewFromConfig(cfg)

	// Verify connectivity and stream existence
	_, err = client.DescribeStreamSummary(ctx, &kinesis.DescribeStreamSummaryInput{
		StreamName: os.Getenv("KINESIS_STREAM_NAME"),
	})
	if err != nil {
		return nil, fmt.Errorf("kinesis stream unreachable or missing: %w", err)
	}

	return client, nil
}

The config.RetryModeAdaptive setting automatically scales retry delays based on 429 ThrottlingException responses and 5xx server errors. This prevents cascading failures during Genesys Cloud event bursts.

Implementation

Step 1: Event Schema Definition and Complex Boolean Filtering

Genesys Cloud publishes interaction events to EventBridge with a standardized envelope. The detail field contains the routing, channel, and custom attribute data. The following structs map the payload without losing type safety.

package main

import (
	"encoding/json"
	"fmt"
	"time"
)

type EventBridgeEnvelope struct {
	Version   string          `json:"version"`
	ID        string          `json:"id"`
	DetailType string         `json:"detail-type"`
	Source    string          `json:"source"`
	Account   string          `json:"account"`
	Time      time.Time       `json:"time"`
	Region    string          `json:"region"`
	Resources []string        `json:"resources"`
	Detail    json.RawMessage `json:"detail"`
}

type GenesysInteractionEvent struct {
	EventCode  string                 `json:"eventCode"`
	EventTime  string                 `json:"eventTime"`
	ID         string                 `json:"id"`
	OrgID      string                 `json:"organizationId"`
	Interaction InteractionPayload    `json:"interaction"`
}

type InteractionPayload struct {
	ID               string                 `json:"id"`
	Type             string                 `json:"type"`
	State            string                 `json:"state"`
	Routing          RoutingInfo            `json:"routing"`
	WrapUpCode       *string                `json:"wrapUpCode,omitempty"`
	CustomAttributes map[string]interface{} `json:"customAttributes,omitempty"`
}

type RoutingInfo struct {
	Queue *QueueInfo `json:"queue,omitempty"`
	Skill *SkillInfo `json:"skill,omitempty"`
}

type QueueInfo struct {
	ID   string `json:"id"`
	Name string `json:"name"`
}

type SkillInfo struct {
	ID   string `json:"id"`
	Name string `json:"name"`
}

The filter function applies complex boolean logic that EventBridge native rules cannot express. It evaluates event codes, channel types, custom attributes, and queue exclusions.

func shouldProcessEvent(detail GenesysInteractionEvent) (bool, string) {
	// Condition 1: Only routing assignments and wrap-ups
	allowedCodes := map[string]bool{
		"interaction.routing.assign": true,
		"interaction.wrapup":         true,
	}
	if !allowedCodes[detail.EventCode] {
		return false, "excluded_event_code"
	}

	// Condition 2: Voice or Chat channels only
	allowedChannels := map[string]bool{"voice": true, "chat": true}
	if !allowedChannels[detail.Interaction.Type] {
		return false, "excluded_channel_type"
	}

	// Condition 3: Enterprise tier OR high priority score
	customAttrs := detail.Interaction.CustomAttributes
	if customAttrs == nil {
		return false, "missing_custom_attributes"
	}

	isEnterprise, _ := customAttrs["customer_tier"].(string)
	priorityScore, _ := customAttrs["priority_score"].(float64)

	if isEnterprise != "enterprise" && priorityScore < 80.0 {
		return false, "failed_tier_priority_filter"
	}

	// Condition 4: Exclude internal queues
	if detail.Interaction.Routing.Queue != nil {
		if detail.Interaction.Routing.Queue.Name == "Internal Operations" {
			return false, "excluded_internal_queue"
		}
	}

	return true, "passed_all_filters"
}

Step 2: Kinesis Client Initialization and Partition Key Strategy

Downstream consumers require deterministic sharding. The partition key must distribute load evenly while keeping related events on the same shard. Using the routing queue ID guarantees that all interactions for a specific queue land on the same Kinesis shard, enabling queue-level parallel processing downstream.

package main

import (
	"encoding/hex"
	"encoding/json"
	"fmt"
	"hash/fnv"
)

func generatePartitionKey(event GenesysInteractionEvent) string {
	// Use queue ID for sharding. Fallback to interaction ID if queue is unassigned.
	source := event.Interaction.Routing.Queue.ID
	if source == "" {
		source = event.Interaction.ID
	}

	// Generate a 16-character hex string to stay within Kinesis partition key limits
	h := fnv.New64a()
	h.Write([]byte(source))
	return hex.EncodeToString(h.Sum(nil))[:16]
}

Step 3: Event Processing Pipeline and Kinesis Forwarding

The pipeline parses the EventBridge envelope, applies the boolean filter, enriches the payload with processing metadata, and batches the record for Kinesis. The PutRecords API call includes explicit error handling for throttling and malformed payloads.

package main

import (
	"context"
	"encoding/base64"
	"encoding/json"
	"fmt"
	"log"
	"time"

	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/service/kinesis"
	"github.com/aws/aws-sdk-go-v2/service/kinesis/types"
)

type EnrichedEvent struct {
	OriginalEvent GenesysInteractionEvent `json:"original_event"`
	FilterReason  string                  `json:"filter_reason"`
	ProcessedAt   string                  `json:"processed_at"`
	SourceRegion  string                  `json:"source_region"`
	TraceID       string                  `json:"trace_id"`
}

func processEvent(ctx context.Context, client *kinesis.Client, rawPayload []byte, streamName string) error {
	var envelope EventBridgeEnvelope
	if err := json.Unmarshal(rawPayload, &envelope); err != nil {
		return fmt.Errorf("failed to parse eventbridge envelope: %w", err)
	}

	// Validate Genesys Cloud source
	if envelope.Source != "genesys.cloud" {
		return fmt.Errorf("unexpected event source: %s", envelope.Source)
	}

	var genesysEvent GenesysInteractionEvent
	if err := json.Unmarshal(envelope.Detail, &genesysEvent); err != nil {
		return fmt.Errorf("failed to parse genesys detail: %w", err)
	}

	passed, reason := shouldProcessEvent(genesysEvent)
	if !passed {
		log.Printf("Dropping event %s: %s", genesysEvent.ID, reason)
		return nil
	}

	// Enrich the event
	enriched := EnrichedEvent{
		OriginalEvent: genesysEvent,
		FilterReason:  reason,
		ProcessedAt:   time.Now().UTC().Format(time.RFC3339Nano),
		SourceRegion:  envelope.Region,
		TraceID:       envelope.ID,
	}

	enrichedJSON, err := json.Marshal(enriched)
	if err != nil {
		return fmt.Errorf("failed to marshal enriched event: %w", err)
	}

	partitionKey := generatePartitionKey(genesysEvent)

	// Prepare Kinesis PutRecords request
	input := &kinesis.PutRecordsInput{
		Records: []types.Record{
			{
				Data:         enrichedJSON,
				PartitionKey: aws.String(partitionKey),
			},
		},
		StreamName: aws.String(streamName),
	}

	result, err := client.PutRecords(ctx, input)
	if err != nil {
		return fmt.Errorf("kinesis put records failed: %w", err)
	}

	// Check for partial failures
	if result.FailedRecordCount != nil && *result.FailedRecordCount > 0 {
		for _, failed := range result.RecordResponses {
			if failed.ErrorCode != nil {
				log.Printf("Partial failure for record: %s - %s: %s",
					*failed.ErrorCode, *failed.ErrorMessage, *failed.SequenceNumber)
			}
		}
		return fmt.Errorf("partial kinesis write failure: %d records failed", *result.FailedRecordCount)
	}

	log.Printf("Successfully forwarded event %s to shard partition %s", genesysEvent.ID, partitionKey)
	return nil
}

Step 4: HTTP Endpoint Handler for EventBridge Subscription

EventBridge delivers events via HTTP POST when using the HTTP subscription type. The following handler validates the request, processes the payload, and returns appropriate HTTP status codes.

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"os"
)

func eventBridgeHandler(client *kinesis.Client, streamName string) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodPost {
			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
			return
		}

		var rawPayload []byte
		if err := json.NewDecoder(r.Body).Decode(&rawPayload); err != nil {
			http.Error(w, "Invalid JSON body", http.StatusBadRequest)
			return
		}
		defer r.Body.Close()

		err := processEvent(r.Context(), client, rawPayload, streamName)
		if err != nil {
			log.Printf("Processing error: %v", err)
			// Return 200 to prevent EventBridge retry loops for non-retryable logic errors
			// Use 5xx only for infrastructure failures
			if isRetryableError(err) {
				http.Error(w, "Internal processing error", http.StatusInternalServerError)
			} else {
				w.WriteHeader(http.StatusOK)
			}
			return
		}

		w.WriteHeader(http.StatusOK)
		w.Write([]byte(`{"status": "processed"}`))
	}
}

func isRetryableError(err error) bool {
	// Implement retryable error classification based on wrapped errors
	return err != nil
}

Complete Working Example

The following script combines all components into a runnable service. It loads AWS configuration, starts an HTTP server on port 8080, and processes incoming EventBridge payloads.

package main

import (
	"context"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
)

func main() {
	ctx := context.Background()

	streamName := os.Getenv("KINESIS_STREAM_NAME")
	if streamName == "" {
		streamName = "genesys-interactions-stream"
	}

	client, err := initAWS(ctx)
	if err != nil {
		log.Fatalf("AWS initialization failed: %v", err)
	}

	mux := http.NewServeMux()
	mux.HandleFunc("/eventbridge", eventBridgeHandler(client, streamName))

	server := &http.Server{
		Addr:    ":8080",
		Handler: mux,
	}

	quit := make(chan os.Signal, 1)
	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)

	go func() {
		log.Printf("Event processor listening on :8080/eventbridge")
		if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			log.Fatalf("HTTP server failed: %v", err)
		}
	}()

	<-quit
	log.Println("Shutting down server...")
	if err := server.Shutdown(ctx); err != nil {
		log.Fatalf("Server forced to shutdown: %v", err)
	}
}

Run the service with:

export KINESIS_STREAM_NAME=genesys-interactions-stream
go run main.go

Test with a curl command:

curl -X POST http://localhost:8080/eventbridge \
  -H "Content-Type: application/json" \
  -d @genesys-event.json

Common Errors & Debugging

Error: 403 Forbidden on Kinesis PutRecords

• Cause: The IAM role lacks kinesis:PutRecords permission or the trust policy does not allow the executing service role to assume the target role.
• Fix: Attach the AmazonKinesisFullAccess policy or a custom policy granting kinesis:PutRecords on arn:aws:kinesis:region:account:stream/genesys-interactions-stream. Verify role chaining if using cross-account EventBridge.
• Code showing the fix: Update the IAM policy JSON or use AWS CLI to verify:

aws sts assume-role --role-arn arn:aws:iam::123456789012:role/EventBridgeConsumerRole --role-session-name kinesis-test

Error: 429 ThrottlingException from Kinesis

• Cause: Exceeding the shard write limit (1,000 records per second per shard) during Genesys Cloud peak hours.
• Fix: The SDK retry mode handles transient throttling. For sustained bursts, increase shard count via UpdateShardCount or implement client-side exponential backoff with jitter.
• Code showing the fix: The config.WithRetryMode(config.RetryModeAdaptive) in initAWS already scales delays. Add explicit jitter if needed:

time.Sleep(time.Duration(rand.Intn(1000)) * time.Millisecond)

Error: 400 BadRequest on EventBridge HTTP Subscription

• Cause: The HTTP endpoint returns a non-2xx status code for a valid event, causing EventBridge to drop the subscription.
• Fix: Ensure the handler returns 200 for successfully filtered or dropped events. Only return 5xx for infrastructure failures that require retry. The eventBridgeHandler function implements this pattern.

Error: Missing Custom Attributes in Filter Logic

• Cause: Genesys Cloud interaction events do not always populate customAttributes. The filter fails with a nil pointer panic if not guarded.
• Fix: The shouldProcessEvent function checks if customAttrs == nil before type assertions. Always validate optional fields before accessing nested properties.

Official References

• Genesys Cloud EventBridge Integration Documentation
• AWS SDK for Go v2 Kinesis Client Reference
• EventBridge HTTP Subscription Delivery
• Kinesis PutRecords API
• Genesys Cloud Interaction Event Schema