Merge branch 'enhance-api-key-handling-logging' into 'main'

fix: enhance API key handling and logging in middleware

See merge request unboundsoftware/schemas!623

Dockerfile

@@ -24,9 +24,17 @@ RUN GOOS=linux GOARCH=amd64 go build \
 FROM scratch as export
 COPY --from=build /build/coverage.txt /
 
-FROM scratch
+FROM node:22-alpine
 ENV TZ Europe/Stockholm
+
+# Install wgc CLI globally for Cosmo Router composition
+RUN npm install -g wgc@latest
+
+# Copy timezone data and certificates
 COPY --from=build /usr/share/zoneinfo /usr/share/zoneinfo
 COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+
+# Copy the service binary
 COPY --from=build /release/service /
+
 CMD ["/service"]

cmd/service/service.go

@@ -30,6 +30,7 @@ import (
 	"gitlab.com/unboundsoftware/schemas/domain"
 	"gitlab.com/unboundsoftware/schemas/graph"
 	"gitlab.com/unboundsoftware/schemas/graph/generated"
+	"gitlab.com/unboundsoftware/schemas/hash"
 	"gitlab.com/unboundsoftware/schemas/logging"
 	"gitlab.com/unboundsoftware/schemas/middleware"
 	"gitlab.com/unboundsoftware/schemas/monitoring"
@@ -210,6 +211,24 @@ func start(closeEvents chan error, logger *slog.Logger, connectToAmqpFunc func(u
 
 		srv.AddTransport(transport.Websocket{
 			KeepAlivePingInterval: 10 * time.Second,
+			InitFunc: func(ctx context.Context, initPayload transport.InitPayload) (context.Context, *transport.InitPayload, error) {
+				// Extract API key from WebSocket connection_init payload
+				if apiKey, ok := initPayload["X-Api-Key"].(string); ok && apiKey != "" {
+					logger.Info("WebSocket connection with API key", "has_key", true)
+					ctx = context.WithValue(ctx, middleware.ApiKey, apiKey)
+
+					// Look up organization by API key (same logic as auth middleware)
+					if organization := serviceCache.OrganizationByAPIKey(hash.String(apiKey)); organization != nil {
+						logger.Info("WebSocket: Organization found for API key", "org_id", organization.ID.String())
+						ctx = context.WithValue(ctx, middleware.OrganizationKey, *organization)
+					} else {
+						logger.Warn("WebSocket: No organization found for API key")
+					}
+				} else {
+					logger.Info("WebSocket connection without API key")
+				}
+				return ctx, &initPayload, nil
+			},
 		})
 		srv.AddTransport(transport.Options{})
 		srv.AddTransport(transport.GET{})

cmd/service/service_test.go

@@ -0,0 +1,336 @@
+package main
+
+import (
+	"context"
+	"testing"
+
+	"github.com/99designs/gqlgen/graphql/handler/transport"
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"gitlab.com/unboundsoftware/eventsourced/eventsourced"
+
+	"gitlab.com/unboundsoftware/schemas/domain"
+	"gitlab.com/unboundsoftware/schemas/hash"
+	"gitlab.com/unboundsoftware/schemas/middleware"
+)
+
+// MockCache is a mock implementation for testing
+type MockCache struct {
+	organizations map[string]*domain.Organization
+}
+
+func (m *MockCache) OrganizationByAPIKey(apiKey string) *domain.Organization {
+	return m.organizations[apiKey]
+}
+
+func TestWebSocketInitFunc_WithValidAPIKey(t *testing.T) {
+	// Setup
+	orgID := uuid.New()
+	org := &domain.Organization{
+		BaseAggregate: eventsourced.BaseAggregate{
+			ID: eventsourced.IdFromString(orgID.String()),
+		},
+		Name: "Test Organization",
+	}
+
+	apiKey := "test-api-key-123"
+	hashedKey := hash.String(apiKey)
+
+	mockCache := &MockCache{
+		organizations: map[string]*domain.Organization{
+			hashedKey: org,
+		},
+	}
+
+	// Create InitFunc (simulating the WebSocket InitFunc logic)
+	initFunc := func(ctx context.Context, initPayload transport.InitPayload) (context.Context, *transport.InitPayload, error) {
+		// Extract API key from WebSocket connection_init payload
+		if apiKey, ok := initPayload["X-Api-Key"].(string); ok && apiKey != "" {
+			ctx = context.WithValue(ctx, middleware.ApiKey, apiKey)
+
+			// Look up organization by API key
+			if organization := mockCache.OrganizationByAPIKey(hash.String(apiKey)); organization != nil {
+				ctx = context.WithValue(ctx, middleware.OrganizationKey, *organization)
+			}
+		}
+		return ctx, &initPayload, nil
+	}
+
+	// Test
+	ctx := context.Background()
+	initPayload := transport.InitPayload{
+		"X-Api-Key": apiKey,
+	}
+
+	resultCtx, resultPayload, err := initFunc(ctx, initPayload)
+
+	// Assert
+	require.NoError(t, err)
+	require.NotNil(t, resultPayload)
+
+	// Check API key is in context
+	if value := resultCtx.Value(middleware.ApiKey); value != nil {
+		assert.Equal(t, apiKey, value.(string))
+	} else {
+		t.Fatal("API key not found in context")
+	}
+
+	// Check organization is in context
+	if value := resultCtx.Value(middleware.OrganizationKey); value != nil {
+		capturedOrg, ok := value.(domain.Organization)
+		require.True(t, ok, "Organization should be of correct type")
+		assert.Equal(t, org.Name, capturedOrg.Name)
+		assert.Equal(t, org.ID.String(), capturedOrg.ID.String())
+	} else {
+		t.Fatal("Organization not found in context")
+	}
+}
+
+func TestWebSocketInitFunc_WithInvalidAPIKey(t *testing.T) {
+	// Setup
+	mockCache := &MockCache{
+		organizations: map[string]*domain.Organization{},
+	}
+
+	apiKey := "invalid-api-key"
+
+	// Create InitFunc
+	initFunc := func(ctx context.Context, initPayload transport.InitPayload) (context.Context, *transport.InitPayload, error) {
+		// Extract API key from WebSocket connection_init payload
+		if apiKey, ok := initPayload["X-Api-Key"].(string); ok && apiKey != "" {
+			ctx = context.WithValue(ctx, middleware.ApiKey, apiKey)
+
+			// Look up organization by API key
+			if organization := mockCache.OrganizationByAPIKey(hash.String(apiKey)); organization != nil {
+				ctx = context.WithValue(ctx, middleware.OrganizationKey, *organization)
+			}
+		}
+		return ctx, &initPayload, nil
+	}
+
+	// Test
+	ctx := context.Background()
+	initPayload := transport.InitPayload{
+		"X-Api-Key": apiKey,
+	}
+
+	resultCtx, resultPayload, err := initFunc(ctx, initPayload)
+
+	// Assert
+	require.NoError(t, err)
+	require.NotNil(t, resultPayload)
+
+	// Check API key is in context
+	if value := resultCtx.Value(middleware.ApiKey); value != nil {
+		assert.Equal(t, apiKey, value.(string))
+	} else {
+		t.Fatal("API key not found in context")
+	}
+
+	// Check organization is NOT in context (since API key is invalid)
+	value := resultCtx.Value(middleware.OrganizationKey)
+	assert.Nil(t, value, "Organization should not be set for invalid API key")
+}
+
+func TestWebSocketInitFunc_WithoutAPIKey(t *testing.T) {
+	// Setup
+	mockCache := &MockCache{
+		organizations: map[string]*domain.Organization{},
+	}
+
+	// Create InitFunc
+	initFunc := func(ctx context.Context, initPayload transport.InitPayload) (context.Context, *transport.InitPayload, error) {
+		// Extract API key from WebSocket connection_init payload
+		if apiKey, ok := initPayload["X-Api-Key"].(string); ok && apiKey != "" {
+			ctx = context.WithValue(ctx, middleware.ApiKey, apiKey)
+
+			// Look up organization by API key
+			if organization := mockCache.OrganizationByAPIKey(hash.String(apiKey)); organization != nil {
+				ctx = context.WithValue(ctx, middleware.OrganizationKey, *organization)
+			}
+		}
+		return ctx, &initPayload, nil
+	}
+
+	// Test
+	ctx := context.Background()
+	initPayload := transport.InitPayload{}
+
+	resultCtx, resultPayload, err := initFunc(ctx, initPayload)
+
+	// Assert
+	require.NoError(t, err)
+	require.NotNil(t, resultPayload)
+
+	// Check API key is NOT in context
+	value := resultCtx.Value(middleware.ApiKey)
+	assert.Nil(t, value, "API key should not be set when not provided")
+
+	// Check organization is NOT in context
+	value = resultCtx.Value(middleware.OrganizationKey)
+	assert.Nil(t, value, "Organization should not be set when API key is not provided")
+}
+
+func TestWebSocketInitFunc_WithEmptyAPIKey(t *testing.T) {
+	// Setup
+	mockCache := &MockCache{
+		organizations: map[string]*domain.Organization{},
+	}
+
+	// Create InitFunc
+	initFunc := func(ctx context.Context, initPayload transport.InitPayload) (context.Context, *transport.InitPayload, error) {
+		// Extract API key from WebSocket connection_init payload
+		if apiKey, ok := initPayload["X-Api-Key"].(string); ok && apiKey != "" {
+			ctx = context.WithValue(ctx, middleware.ApiKey, apiKey)
+
+			// Look up organization by API key
+			if organization := mockCache.OrganizationByAPIKey(hash.String(apiKey)); organization != nil {
+				ctx = context.WithValue(ctx, middleware.OrganizationKey, *organization)
+			}
+		}
+		return ctx, &initPayload, nil
+	}
+
+	// Test
+	ctx := context.Background()
+	initPayload := transport.InitPayload{
+		"X-Api-Key": "", // Empty string
+	}
+
+	resultCtx, resultPayload, err := initFunc(ctx, initPayload)
+
+	// Assert
+	require.NoError(t, err)
+	require.NotNil(t, resultPayload)
+
+	// Check API key is NOT in context (because empty string fails the condition)
+	value := resultCtx.Value(middleware.ApiKey)
+	assert.Nil(t, value, "API key should not be set when empty")
+
+	// Check organization is NOT in context
+	value = resultCtx.Value(middleware.OrganizationKey)
+	assert.Nil(t, value, "Organization should not be set when API key is empty")
+}
+
+func TestWebSocketInitFunc_WithWrongTypeAPIKey(t *testing.T) {
+	// Setup
+	mockCache := &MockCache{
+		organizations: map[string]*domain.Organization{},
+	}
+
+	// Create InitFunc
+	initFunc := func(ctx context.Context, initPayload transport.InitPayload) (context.Context, *transport.InitPayload, error) {
+		// Extract API key from WebSocket connection_init payload
+		if apiKey, ok := initPayload["X-Api-Key"].(string); ok && apiKey != "" {
+			ctx = context.WithValue(ctx, middleware.ApiKey, apiKey)
+
+			// Look up organization by API key
+			if organization := mockCache.OrganizationByAPIKey(hash.String(apiKey)); organization != nil {
+				ctx = context.WithValue(ctx, middleware.OrganizationKey, *organization)
+			}
+		}
+		return ctx, &initPayload, nil
+	}
+
+	// Test
+	ctx := context.Background()
+	initPayload := transport.InitPayload{
+		"X-Api-Key": 12345, // Wrong type (int instead of string)
+	}
+
+	resultCtx, resultPayload, err := initFunc(ctx, initPayload)
+
+	// Assert
+	require.NoError(t, err)
+	require.NotNil(t, resultPayload)
+
+	// Check API key is NOT in context (type assertion fails)
+	value := resultCtx.Value(middleware.ApiKey)
+	assert.Nil(t, value, "API key should not be set when wrong type")
+
+	// Check organization is NOT in context
+	value = resultCtx.Value(middleware.OrganizationKey)
+	assert.Nil(t, value, "Organization should not be set when API key has wrong type")
+}
+
+func TestWebSocketInitFunc_WithMultipleOrganizations(t *testing.T) {
+	// Setup - create multiple organizations
+	org1ID := uuid.New()
+	org1 := &domain.Organization{
+		BaseAggregate: eventsourced.BaseAggregate{
+			ID: eventsourced.IdFromString(org1ID.String()),
+		},
+		Name: "Organization 1",
+	}
+
+	org2ID := uuid.New()
+	org2 := &domain.Organization{
+		BaseAggregate: eventsourced.BaseAggregate{
+			ID: eventsourced.IdFromString(org2ID.String()),
+		},
+		Name: "Organization 2",
+	}
+
+	apiKey1 := "api-key-org-1"
+	apiKey2 := "api-key-org-2"
+	hashedKey1 := hash.String(apiKey1)
+	hashedKey2 := hash.String(apiKey2)
+
+	mockCache := &MockCache{
+		organizations: map[string]*domain.Organization{
+			hashedKey1: org1,
+			hashedKey2: org2,
+		},
+	}
+
+	// Create InitFunc
+	initFunc := func(ctx context.Context, initPayload transport.InitPayload) (context.Context, *transport.InitPayload, error) {
+		// Extract API key from WebSocket connection_init payload
+		if apiKey, ok := initPayload["X-Api-Key"].(string); ok && apiKey != "" {
+			ctx = context.WithValue(ctx, middleware.ApiKey, apiKey)
+
+			// Look up organization by API key
+			if organization := mockCache.OrganizationByAPIKey(hash.String(apiKey)); organization != nil {
+				ctx = context.WithValue(ctx, middleware.OrganizationKey, *organization)
+			}
+		}
+		return ctx, &initPayload, nil
+	}
+
+	// Test with first API key
+	ctx1 := context.Background()
+	initPayload1 := transport.InitPayload{
+		"X-Api-Key": apiKey1,
+	}
+
+	resultCtx1, _, err := initFunc(ctx1, initPayload1)
+	require.NoError(t, err)
+
+	if value := resultCtx1.Value(middleware.OrganizationKey); value != nil {
+		capturedOrg, ok := value.(domain.Organization)
+		require.True(t, ok)
+		assert.Equal(t, org1.Name, capturedOrg.Name)
+		assert.Equal(t, org1.ID.String(), capturedOrg.ID.String())
+	} else {
+		t.Fatal("Organization 1 not found in context")
+	}
+
+	// Test with second API key
+	ctx2 := context.Background()
+	initPayload2 := transport.InitPayload{
+		"X-Api-Key": apiKey2,
+	}
+
+	resultCtx2, _, err := initFunc(ctx2, initPayload2)
+	require.NoError(t, err)
+
+	if value := resultCtx2.Value(middleware.OrganizationKey); value != nil {
+		capturedOrg, ok := value.(domain.Organization)
+		require.True(t, ok)
+		assert.Equal(t, org2.Name, capturedOrg.Name)
+		assert.Equal(t, org2.ID.String(), capturedOrg.ID.String())
+	} else {
+		t.Fatal("Organization 2 not found in context")
+	}
+}

go.mod

@@ -9,6 +9,7 @@ require (
 	github.com/apex/log v1.9.0
 	github.com/auth0/go-jwt-middleware/v2 v2.3.0
 	github.com/golang-jwt/jwt/v5 v5.3.0
+	github.com/google/uuid v1.6.0
 	github.com/jmoiron/sqlx v1.4.0
 	github.com/pkg/errors v0.9.1
 	github.com/pressly/goose/v3 v3.26.0
@@ -30,6 +31,7 @@ require (
 	go.opentelemetry.io/otel/sdk/log v0.14.0
 	go.opentelemetry.io/otel/sdk/metric v1.38.0
 	go.opentelemetry.io/otel/trace v1.38.0
+	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
@@ -41,7 +43,6 @@ require (
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
-	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/websocket v1.5.1 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.2 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
@@ -51,6 +52,7 @@ require (
 	github.com/rabbitmq/amqp091-go v1.10.0 // indirect
 	github.com/sethvargo/go-retry v0.3.0 // indirect
 	github.com/sosodev/duration v1.3.1 // indirect
+	github.com/stretchr/objx v0.5.2 // indirect
 	github.com/tidwall/gjson v1.17.0 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.1 // indirect
@@ -72,5 +74,4 @@ require (
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20250825161204-c5933d9347a5 // indirect
 	google.golang.org/grpc v1.75.0 // indirect
 	google.golang.org/protobuf v1.36.10 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -141,6 +141,8 @@ github.com/sosodev/duration v1.3.1/go.mod h1:RQIBBX0+fMLc/D9+Jb/fwvVmo0eZvDDEERA
 github.com/sparetimecoders/goamqp v0.3.3 h1:z/nfTPmrjeU/rIVuNOgsVLCimp3WFoNFvS3ZzXRJ6HE=
 github.com/sparetimecoders/goamqp v0.3.3/go.mod h1:W9NRCpWLE+Vruv2dcRSbszNil2O826d2Nv6kAkETW5o=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=

graph/cosmo.go

@@ -1,54 +1,125 @@
 package graph
 
 import (
-	"encoding/json"
 	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+
+	"gopkg.in/yaml.v3"
 
 	"gitlab.com/unboundsoftware/schemas/graph/model"
 )
 
-// GenerateCosmoRouterConfig generates a Cosmo Router execution config from subgraphs
-func GenerateCosmoRouterConfig(subGraphs []*model.SubGraph) (string, error) {
-	// Build the Cosmo router config structure
-	// This is a simplified version - you may need to adjust based on actual Cosmo requirements
-	config := map[string]interface{}{
-		"version":   "1",
-		"subgraphs": convertSubGraphsToCosmo(subGraphs),
-		// Add other Cosmo-specific configuration as needed
-	}
-
-	// Marshal to JSON
-	configJSON, err := json.MarshalIndent(config, "", "  ")
-	if err != nil {
-		return "", fmt.Errorf("marshal cosmo config: %w", err)
-	}
-
-	return string(configJSON), nil
+// CommandExecutor is an interface for executing external commands
+// This allows for mocking in tests
+type CommandExecutor interface {
+	Execute(name string, args ...string) ([]byte, error)
 }
 
-func convertSubGraphsToCosmo(subGraphs []*model.SubGraph) []map[string]interface{} {
-	cosmoSubgraphs := make([]map[string]interface{}, 0, len(subGraphs))
+// DefaultCommandExecutor implements CommandExecutor using os/exec
+type DefaultCommandExecutor struct{}
+
+// Execute runs a command and returns its combined output
+func (e *DefaultCommandExecutor) Execute(name string, args ...string) ([]byte, error) {
+	cmd := exec.Command(name, args...)
+	return cmd.CombinedOutput()
+}
+
+// GenerateCosmoRouterConfig generates a Cosmo Router execution config from subgraphs
+// using the official wgc CLI tool via npx
+func GenerateCosmoRouterConfig(subGraphs []*model.SubGraph) (string, error) {
+	return GenerateCosmoRouterConfigWithExecutor(subGraphs, &DefaultCommandExecutor{})
+}
+
+// GenerateCosmoRouterConfigWithExecutor generates a Cosmo Router execution config from subgraphs
+// using the provided command executor (useful for testing)
+func GenerateCosmoRouterConfigWithExecutor(subGraphs []*model.SubGraph, executor CommandExecutor) (string, error) {
+	if len(subGraphs) == 0 {
+		return "", fmt.Errorf("no subgraphs provided")
+	}
+
+	// Create a temporary directory for composition
+	tmpDir, err := os.MkdirTemp("", "cosmo-compose-*")
+	if err != nil {
+		return "", fmt.Errorf("create temp dir: %w", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Write each subgraph SDL to a file
+	type SubgraphConfig struct {
+		Name         string                 `yaml:"name"`
+		RoutingURL   string                 `yaml:"routing_url,omitempty"`
+		Schema       map[string]string      `yaml:"schema"`
+		Subscription map[string]interface{} `yaml:"subscription,omitempty"`
+	}
+
+	type InputConfig struct {
+		Version   int              `yaml:"version"`
+		Subgraphs []SubgraphConfig `yaml:"subgraphs"`
+	}
+
+	inputConfig := InputConfig{
+		Version:   1,
+		Subgraphs: make([]SubgraphConfig, 0, len(subGraphs)),
+	}
 
 	for _, sg := range subGraphs {
-		cosmoSg := map[string]interface{}{
-			"name": sg.Service,
-			"sdl":  sg.Sdl,
+		// Write SDL to a temp file
+		schemaFile := filepath.Join(tmpDir, fmt.Sprintf("%s.graphql", sg.Service))
+		if err := os.WriteFile(schemaFile, []byte(sg.Sdl), 0o644); err != nil {
+			return "", fmt.Errorf("write schema file for %s: %w", sg.Service, err)
+		}
+
+		subgraphCfg := SubgraphConfig{
+			Name: sg.Service,
+			Schema: map[string]string{
+				"file": schemaFile,
+			},
 		}
 
 		if sg.URL != nil {
-			cosmoSg["routing_url"] = *sg.URL
+			subgraphCfg.RoutingURL = *sg.URL
 		}
 
 		if sg.WsURL != nil {
-			cosmoSg["subscription"] = map[string]interface{}{
+			subgraphCfg.Subscription = map[string]interface{}{
 				"url":                   *sg.WsURL,
 				"protocol":              "ws",
 				"websocket_subprotocol": "graphql-ws",
 			}
 		}
 
-		cosmoSubgraphs = append(cosmoSubgraphs, cosmoSg)
+		inputConfig.Subgraphs = append(inputConfig.Subgraphs, subgraphCfg)
 	}
 
-	return cosmoSubgraphs
+	// Write input config YAML
+	inputFile := filepath.Join(tmpDir, "input.yaml")
+	inputYAML, err := yaml.Marshal(inputConfig)
+	if err != nil {
+		return "", fmt.Errorf("marshal input config: %w", err)
+	}
+	if err := os.WriteFile(inputFile, inputYAML, 0o644); err != nil {
+		return "", fmt.Errorf("write input config: %w", err)
+	}
+
+	// Execute wgc router compose
+	// wgc is installed globally in the Docker image
+	outputFile := filepath.Join(tmpDir, "config.json")
+	output, err := executor.Execute("wgc", "router", "compose",
+		"--input", inputFile,
+		"--out", outputFile,
+		"--suppress-warnings",
+	)
+	if err != nil {
+		return "", fmt.Errorf("wgc router compose failed: %w\nOutput: %s", err, string(output))
+	}
+
+	// Read the generated config
+	configJSON, err := os.ReadFile(outputFile)
+	if err != nil {
+		return "", fmt.Errorf("read output config: %w", err)
+	}
+
+	return string(configJSON), nil
 }

graph/cosmo_test.go

@@ -2,14 +2,185 @@ package graph
 
 import (
 	"encoding/json"
+	"fmt"
+	"os"
+	"strings"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"gopkg.in/yaml.v3"
 
 	"gitlab.com/unboundsoftware/schemas/graph/model"
 )
 
+// MockCommandExecutor implements CommandExecutor for testing
+type MockCommandExecutor struct {
+	// CallCount tracks how many times Execute was called
+	CallCount int
+	// LastArgs stores the arguments from the last call
+	LastArgs []string
+	// Error can be set to simulate command failures
+	Error error
+}
+
+// Execute mocks the wgc command by generating a realistic config.json file
+func (m *MockCommandExecutor) Execute(name string, args ...string) ([]byte, error) {
+	m.CallCount++
+	m.LastArgs = append([]string{name}, args...)
+
+	if m.Error != nil {
+		return nil, m.Error
+	}
+
+	// Parse the input file to understand what subgraphs we're composing
+	var inputFile, outputFile string
+	for i, arg := range args {
+		if arg == "--input" && i+1 < len(args) {
+			inputFile = args[i+1]
+		}
+		if arg == "--out" && i+1 < len(args) {
+			outputFile = args[i+1]
+		}
+	}
+
+	if inputFile == "" || outputFile == "" {
+		return nil, fmt.Errorf("missing required arguments")
+	}
+
+	// Read the input YAML to get subgraph information
+	inputData, err := os.ReadFile(inputFile)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read input file: %w", err)
+	}
+
+	var input struct {
+		Version   int `yaml:"version"`
+		Subgraphs []struct {
+			Name         string                 `yaml:"name"`
+			RoutingURL   string                 `yaml:"routing_url,omitempty"`
+			Schema       map[string]string      `yaml:"schema"`
+			Subscription map[string]interface{} `yaml:"subscription,omitempty"`
+		} `yaml:"subgraphs"`
+	}
+
+	if err := yaml.Unmarshal(inputData, &input); err != nil {
+		return nil, fmt.Errorf("failed to parse input YAML: %w", err)
+	}
+
+	// Generate a realistic Cosmo Router config based on the input
+	config := map[string]interface{}{
+		"version": "mock-version-uuid",
+		"subgraphs": func() []map[string]interface{} {
+			subgraphs := make([]map[string]interface{}, len(input.Subgraphs))
+			for i, sg := range input.Subgraphs {
+				subgraph := map[string]interface{}{
+					"id":   fmt.Sprintf("mock-id-%d", i),
+					"name": sg.Name,
+				}
+				if sg.RoutingURL != "" {
+					subgraph["routingUrl"] = sg.RoutingURL
+				}
+				subgraphs[i] = subgraph
+			}
+			return subgraphs
+		}(),
+		"engineConfig": map[string]interface{}{
+			"graphqlSchema": generateMockSchema(input.Subgraphs),
+			"datasourceConfigurations": func() []map[string]interface{} {
+				dsConfigs := make([]map[string]interface{}, len(input.Subgraphs))
+				for i, sg := range input.Subgraphs {
+					// Read SDL from file
+					sdl := ""
+					if schemaFile, ok := sg.Schema["file"]; ok {
+						if sdlData, err := os.ReadFile(schemaFile); err == nil {
+							sdl = string(sdlData)
+						}
+					}
+
+					dsConfig := map[string]interface{}{
+						"id":   fmt.Sprintf("datasource-%d", i),
+						"kind": "GRAPHQL",
+						"customGraphql": map[string]interface{}{
+							"federation": map[string]interface{}{
+								"enabled":    true,
+								"serviceSdl": sdl,
+							},
+							"subscription": func() map[string]interface{} {
+								if len(sg.Subscription) > 0 {
+									return map[string]interface{}{
+										"enabled": true,
+										"url": map[string]interface{}{
+											"staticVariableContent": sg.Subscription["url"],
+										},
+										"protocol":             sg.Subscription["protocol"],
+										"websocketSubprotocol": sg.Subscription["websocket_subprotocol"],
+									}
+								}
+								return map[string]interface{}{
+									"enabled": false,
+								}
+							}(),
+						},
+					}
+					dsConfigs[i] = dsConfig
+				}
+				return dsConfigs
+			}(),
+		},
+	}
+
+	// Write the config to the output file
+	configJSON, err := json.Marshal(config)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal config: %w", err)
+	}
+
+	if err := os.WriteFile(outputFile, configJSON, 0o644); err != nil {
+		return nil, fmt.Errorf("failed to write output file: %w", err)
+	}
+
+	return []byte("Success"), nil
+}
+
+// generateMockSchema creates a simple merged schema from subgraphs
+func generateMockSchema(subgraphs []struct {
+	Name         string                 `yaml:"name"`
+	RoutingURL   string                 `yaml:"routing_url,omitempty"`
+	Schema       map[string]string      `yaml:"schema"`
+	Subscription map[string]interface{} `yaml:"subscription,omitempty"`
+},
+) string {
+	schema := strings.Builder{}
+	schema.WriteString("schema {\n  query: Query\n")
+
+	// Check if any subgraph has subscriptions
+	hasSubscriptions := false
+	for _, sg := range subgraphs {
+		if len(sg.Subscription) > 0 {
+			hasSubscriptions = true
+			break
+		}
+	}
+
+	if hasSubscriptions {
+		schema.WriteString("  subscription: Subscription\n")
+	}
+	schema.WriteString("}\n\n")
+
+	// Add types by reading SDL files
+	for _, sg := range subgraphs {
+		if schemaFile, ok := sg.Schema["file"]; ok {
+			if sdlData, err := os.ReadFile(schemaFile); err == nil {
+				schema.WriteString(string(sdlData))
+				schema.WriteString("\n")
+			}
+		}
+	}
+
+	return schema.String()
+}
+
 func TestGenerateCosmoRouterConfig(t *testing.T) {
 	tests := []struct {
 		name      string
@@ -33,7 +204,10 @@ func TestGenerateCosmoRouterConfig(t *testing.T) {
 				err := json.Unmarshal([]byte(config), &result)
 				require.NoError(t, err, "Config should be valid JSON")
 
-				assert.Equal(t, "1", result["version"], "Version should be 1")
+				// Version is a UUID string from wgc
+				version, ok := result["version"].(string)
+				require.True(t, ok, "Version should be a string")
+				assert.NotEmpty(t, version, "Version should not be empty")
 
 				subgraphs, ok := result["subgraphs"].([]interface{})
 				require.True(t, ok, "subgraphs should be an array")
@@ -41,14 +215,26 @@ func TestGenerateCosmoRouterConfig(t *testing.T) {
 
 				sg := subgraphs[0].(map[string]interface{})
 				assert.Equal(t, "test-service", sg["name"])
-				assert.Equal(t, "http://localhost:4001/query", sg["routing_url"])
-				assert.Equal(t, "type Query { test: String }", sg["sdl"])
+				assert.Equal(t, "http://localhost:4001/query", sg["routingUrl"])
 
-				subscription, ok := sg["subscription"].(map[string]interface{})
+				// Check that datasource configurations include subscription settings
+				engineConfig, ok := result["engineConfig"].(map[string]interface{})
+				require.True(t, ok, "Should have engineConfig")
+
+				dsConfigs, ok := engineConfig["datasourceConfigurations"].([]interface{})
+				require.True(t, ok && len(dsConfigs) > 0, "Should have datasource configurations")
+
+				ds := dsConfigs[0].(map[string]interface{})
+				customGraphql, ok := ds["customGraphql"].(map[string]interface{})
+				require.True(t, ok, "Should have customGraphql config")
+
+				subscription, ok := customGraphql["subscription"].(map[string]interface{})
 				require.True(t, ok, "Should have subscription config")
-				assert.Equal(t, "ws://localhost:4001/query", subscription["url"])
-				assert.Equal(t, "ws", subscription["protocol"])
-				assert.Equal(t, "graphql-ws", subscription["websocket_subprotocol"])
+				assert.True(t, subscription["enabled"].(bool), "Subscription should be enabled")
+
+				subUrl, ok := subscription["url"].(map[string]interface{})
+				require.True(t, ok, "Should have subscription URL")
+				assert.Equal(t, "ws://localhost:4001/query", subUrl["staticVariableContent"])
 			},
 		},
 		{
@@ -80,18 +266,28 @@ func TestGenerateCosmoRouterConfig(t *testing.T) {
 				subgraphs := result["subgraphs"].([]interface{})
 				assert.Len(t, subgraphs, 3, "Should have 3 subgraphs")
 
-				// Check first service has no subscription
+				// Check service names
 				sg1 := subgraphs[0].(map[string]interface{})
 				assert.Equal(t, "service-1", sg1["name"])
-				_, hasSubscription := sg1["subscription"]
-				assert.False(t, hasSubscription, "service-1 should not have subscription config")
 
-				// Check third service has subscription
 				sg3 := subgraphs[2].(map[string]interface{})
 				assert.Equal(t, "service-3", sg3["name"])
-				subscription, hasSubscription := sg3["subscription"]
-				assert.True(t, hasSubscription, "service-3 should have subscription config")
-				assert.NotNil(t, subscription)
+
+				// Check that datasource configurations include subscription for service-3
+				engineConfig, ok := result["engineConfig"].(map[string]interface{})
+				require.True(t, ok, "Should have engineConfig")
+
+				dsConfigs, ok := engineConfig["datasourceConfigurations"].([]interface{})
+				require.True(t, ok && len(dsConfigs) == 3, "Should have 3 datasource configurations")
+
+				// Find service-3's datasource config (should have subscription enabled)
+				ds3 := dsConfigs[2].(map[string]interface{})
+				customGraphql, ok := ds3["customGraphql"].(map[string]interface{})
+				require.True(t, ok, "Service-3 should have customGraphql config")
+
+				subscription, ok := customGraphql["subscription"].(map[string]interface{})
+				require.True(t, ok, "Service-3 should have subscription config")
+				assert.True(t, subscription["enabled"].(bool), "Service-3 subscription should be enabled")
 			},
 		},
 		{
@@ -113,39 +309,43 @@ func TestGenerateCosmoRouterConfig(t *testing.T) {
 				subgraphs := result["subgraphs"].([]interface{})
 				sg := subgraphs[0].(map[string]interface{})
 
-				// Should not have routing_url or subscription fields if URLs are nil
-				_, hasRoutingURL := sg["routing_url"]
-				assert.False(t, hasRoutingURL, "Should not have routing_url when URL is nil")
+				// Should not have routing URL when URL is nil
+				_, hasRoutingURL := sg["routingUrl"]
+				assert.False(t, hasRoutingURL, "Should not have routingUrl when URL is nil")
 
-				_, hasSubscription := sg["subscription"]
-				assert.False(t, hasSubscription, "Should not have subscription when WsURL is nil")
+				// Check datasource configurations don't have subscription enabled
+				engineConfig, ok := result["engineConfig"].(map[string]interface{})
+				require.True(t, ok, "Should have engineConfig")
+
+				dsConfigs, ok := engineConfig["datasourceConfigurations"].([]interface{})
+				require.True(t, ok && len(dsConfigs) > 0, "Should have datasource configurations")
+
+				ds := dsConfigs[0].(map[string]interface{})
+				customGraphql, ok := ds["customGraphql"].(map[string]interface{})
+				require.True(t, ok, "Should have customGraphql config")
+
+				subscription, ok := customGraphql["subscription"].(map[string]interface{})
+				if ok {
+					// wgc always enables subscription but URL should be empty when WsURL is nil
+					subUrl, hasUrl := subscription["url"].(map[string]interface{})
+					if hasUrl {
+						_, hasStaticContent := subUrl["staticVariableContent"]
+						assert.False(t, hasStaticContent, "Subscription URL should be empty when WsURL is nil")
+					}
+				}
 			},
 		},
 		{
 			name:      "empty subgraphs",
 			subGraphs: []*model.SubGraph{},
-			wantErr:   false,
-			validate: func(t *testing.T, config string) {
-				var result map[string]interface{}
-				err := json.Unmarshal([]byte(config), &result)
-				require.NoError(t, err)
-
-				subgraphs := result["subgraphs"].([]interface{})
-				assert.Len(t, subgraphs, 0, "Should have empty subgraphs array")
-			},
+			wantErr:   true,
+			validate:  nil,
 		},
 		{
 			name:      "nil subgraphs",
 			subGraphs: nil,
-			wantErr:   false,
-			validate: func(t *testing.T, config string) {
-				var result map[string]interface{}
-				err := json.Unmarshal([]byte(config), &result)
-				require.NoError(t, err)
-
-				subgraphs := result["subgraphs"].([]interface{})
-				assert.Len(t, subgraphs, 0, "Should handle nil subgraphs as empty array")
-			},
+			wantErr:   true,
+			validate:  nil,
 		},
 		{
 			name: "complex SDL with multiple types",
@@ -173,29 +373,58 @@ func TestGenerateCosmoRouterConfig(t *testing.T) {
 				err := json.Unmarshal([]byte(config), &result)
 				require.NoError(t, err)
 
-				subgraphs := result["subgraphs"].([]interface{})
-				sg := subgraphs[0].(map[string]interface{})
-				sdl := sg["sdl"].(string)
+				// Check the composed graphqlSchema contains the types
+				engineConfig, ok := result["engineConfig"].(map[string]interface{})
+				require.True(t, ok, "Should have engineConfig")
 
-				assert.Contains(t, sdl, "type Query")
-				assert.Contains(t, sdl, "type User")
-				assert.Contains(t, sdl, "email: String!")
+				graphqlSchema, ok := engineConfig["graphqlSchema"].(string)
+				require.True(t, ok, "Should have graphqlSchema")
+
+				assert.Contains(t, graphqlSchema, "Query", "Schema should contain Query type")
+				assert.Contains(t, graphqlSchema, "User", "Schema should contain User type")
+
+				// Check datasource has the original SDL
+				dsConfigs, ok := engineConfig["datasourceConfigurations"].([]interface{})
+				require.True(t, ok && len(dsConfigs) > 0, "Should have datasource configurations")
+
+				ds := dsConfigs[0].(map[string]interface{})
+				customGraphql, ok := ds["customGraphql"].(map[string]interface{})
+				require.True(t, ok, "Should have customGraphql config")
+
+				federation, ok := customGraphql["federation"].(map[string]interface{})
+				require.True(t, ok, "Should have federation config")
+
+				serviceSdl, ok := federation["serviceSdl"].(string)
+				require.True(t, ok, "Should have serviceSdl")
+				assert.Contains(t, serviceSdl, "email: String!", "SDL should contain email field")
 			},
 		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			config, err := GenerateCosmoRouterConfig(tt.subGraphs)
+			// Use mock executor for all tests
+			mockExecutor := &MockCommandExecutor{}
+			config, err := GenerateCosmoRouterConfigWithExecutor(tt.subGraphs, mockExecutor)
 
 			if tt.wantErr {
 				assert.Error(t, err)
+				// Verify executor was not called for error cases
+				if len(tt.subGraphs) == 0 {
+					assert.Equal(t, 0, mockExecutor.CallCount, "Should not call executor for empty subgraphs")
+				}
 				return
 			}
 
 			require.NoError(t, err)
 			assert.NotEmpty(t, config, "Config should not be empty")
 
+			// Verify executor was called correctly
+			assert.Equal(t, 1, mockExecutor.CallCount, "Should call executor once")
+			assert.Equal(t, "wgc", mockExecutor.LastArgs[0], "Should call wgc command")
+			assert.Contains(t, mockExecutor.LastArgs, "router", "Should include 'router' arg")
+			assert.Contains(t, mockExecutor.LastArgs, "compose", "Should include 'compose' arg")
+
 			if tt.validate != nil {
 				tt.validate(t, config)
 			}
@@ -203,53 +432,31 @@ func TestGenerateCosmoRouterConfig(t *testing.T) {
 	}
 }
 
-func TestConvertSubGraphsToCosmo(t *testing.T) {
-	tests := []struct {
-		name      string
-		subGraphs []*model.SubGraph
-		wantLen   int
-		validate  func(t *testing.T, result []map[string]interface{})
-	}{
+// TestGenerateCosmoRouterConfig_MockError tests error handling with mock executor
+func TestGenerateCosmoRouterConfig_MockError(t *testing.T) {
+	subGraphs := []*model.SubGraph{
 		{
-			name: "preserves subgraph order",
-			subGraphs: []*model.SubGraph{
-				{Service: "alpha", URL: stringPtr("http://a"), Sdl: "a"},
-				{Service: "beta", URL: stringPtr("http://b"), Sdl: "b"},
-				{Service: "gamma", URL: stringPtr("http://c"), Sdl: "c"},
-			},
-			wantLen: 3,
-			validate: func(t *testing.T, result []map[string]interface{}) {
-				assert.Equal(t, "alpha", result[0]["name"])
-				assert.Equal(t, "beta", result[1]["name"])
-				assert.Equal(t, "gamma", result[2]["name"])
-			},
-		},
-		{
-			name: "includes SDL exactly as provided",
-			subGraphs: []*model.SubGraph{
-				{
-					Service: "test",
-					URL:     stringPtr("http://test"),
-					Sdl:     "type Query { special: String! }",
-				},
-			},
-			wantLen: 1,
-			validate: func(t *testing.T, result []map[string]interface{}) {
-				assert.Equal(t, "type Query { special: String! }", result[0]["sdl"])
-			},
+			Service: "test-service",
+			URL:     stringPtr("http://localhost:4001/query"),
+			Sdl:     "type Query { test: String }",
 		},
 	}
 
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			result := convertSubGraphsToCosmo(tt.subGraphs)
-			assert.Len(t, result, tt.wantLen)
-
-			if tt.validate != nil {
-				tt.validate(t, result)
-			}
-		})
+	// Create a mock executor that returns an error
+	mockExecutor := &MockCommandExecutor{
+		Error: fmt.Errorf("simulated wgc failure"),
 	}
+
+	config, err := GenerateCosmoRouterConfigWithExecutor(subGraphs, mockExecutor)
+
+	// Verify error is propagated
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "wgc router compose failed")
+	assert.Contains(t, err.Error(), "simulated wgc failure")
+	assert.Empty(t, config)
+
+	// Verify executor was called
+	assert.Equal(t, 1, mockExecutor.CallCount, "Should have attempted to call executor")
 }
 
 // Helper function for tests

graph/generated/generated.go

@@ -74,6 +74,7 @@ type ComplexityRoot struct {
 	}
 
 	Query struct {
+		LatestSchema  func(childComplexity int, ref string) int
 		Organizations func(childComplexity int) int
 		Supergraph    func(childComplexity int, ref string, isAfter *string) int
 	}
@@ -124,6 +125,7 @@ type MutationResolver interface {
 type QueryResolver interface {
 	Organizations(ctx context.Context) ([]*model.Organization, error)
 	Supergraph(ctx context.Context, ref string, isAfter *string) (model.Supergraph, error)
+	LatestSchema(ctx context.Context, ref string) (*model.SchemaUpdate, error)
 }
 type SubscriptionResolver interface {
 	SchemaUpdates(ctx context.Context, ref string) (<-chan *model.SchemaUpdate, error)
@@ -250,6 +252,17 @@ func (e *executableSchema) Complexity(ctx context.Context, typeName, field strin
 
 		return e.complexity.Organization.Users(childComplexity), true
 
+	case "Query.latestSchema":
+		if e.complexity.Query.LatestSchema == nil {
+			break
+		}
+
+		args, err := ec.field_Query_latestSchema_args(ctx, rawArgs)
+		if err != nil {
+			return 0, false
+		}
+
+		return e.complexity.Query.LatestSchema(childComplexity, args["ref"].(string)), true
 	case "Query.organizations":
 		if e.complexity.Query.Organizations == nil {
 			break
@@ -520,6 +533,7 @@ var sources = []*ast.Source{
 	{Name: "../schema.graphqls", Input: `type Query {
   organizations: [Organization!]! @auth(user: true)
   supergraph(ref: String!, isAfter: String): Supergraph! @auth(organization: true)
+  latestSchema(ref: String!): SchemaUpdate! @auth(organization: true)
 }
 
 type Mutation {
@@ -671,6 +685,17 @@ func (ec *executionContext) field_Query___type_args(ctx context.Context, rawArgs
 	return args, nil
 }
 
+func (ec *executionContext) field_Query_latestSchema_args(ctx context.Context, rawArgs map[string]any) (map[string]any, error) {
+	var err error
+	args := map[string]any{}
+	arg0, err := graphql.ProcessArgField(ctx, rawArgs, "ref", ec.unmarshalNString2string)
+	if err != nil {
+		return nil, err
+	}
+	args["ref"] = arg0
+	return args, nil
+}
+
 func (ec *executionContext) field_Query_supergraph_args(ctx context.Context, rawArgs map[string]any) (map[string]any, error) {
 	var err error
 	args := map[string]any{}
@@ -1434,6 +1459,75 @@ func (ec *executionContext) fieldContext_Query_supergraph(ctx context.Context, f
 	return fc, nil
 }
 
+func (ec *executionContext) _Query_latestSchema(ctx context.Context, field graphql.CollectedField) (ret graphql.Marshaler) {
+	return graphql.ResolveField(
+		ctx,
+		ec.OperationContext,
+		field,
+		ec.fieldContext_Query_latestSchema,
+		func(ctx context.Context) (any, error) {
+			fc := graphql.GetFieldContext(ctx)
+			return ec.resolvers.Query().LatestSchema(ctx, fc.Args["ref"].(string))
+		},
+		func(ctx context.Context, next graphql.Resolver) graphql.Resolver {
+			directive0 := next
+
+			directive1 := func(ctx context.Context) (any, error) {
+				organization, err := ec.unmarshalOBoolean2ᚖbool(ctx, true)
+				if err != nil {
+					var zeroVal *model.SchemaUpdate
+					return zeroVal, err
+				}
+				if ec.directives.Auth == nil {
+					var zeroVal *model.SchemaUpdate
+					return zeroVal, errors.New("directive auth is not implemented")
+				}
+				return ec.directives.Auth(ctx, nil, directive0, nil, organization)
+			}
+
+			next = directive1
+			return next
+		},
+		ec.marshalNSchemaUpdate2ᚖgitlabᚗcomᚋunboundsoftwareᚋschemasᚋgraphᚋmodelᚐSchemaUpdate,
+		true,
+		true,
+	)
+}
+
+func (ec *executionContext) fieldContext_Query_latestSchema(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
+	fc = &graphql.FieldContext{
+		Object:     "Query",
+		Field:      field,
+		IsMethod:   true,
+		IsResolver: true,
+		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
+			switch field.Name {
+			case "ref":
+				return ec.fieldContext_SchemaUpdate_ref(ctx, field)
+			case "id":
+				return ec.fieldContext_SchemaUpdate_id(ctx, field)
+			case "subGraphs":
+				return ec.fieldContext_SchemaUpdate_subGraphs(ctx, field)
+			case "cosmoRouterConfig":
+				return ec.fieldContext_SchemaUpdate_cosmoRouterConfig(ctx, field)
+			}
+			return nil, fmt.Errorf("no field named %q was found under type SchemaUpdate", field.Name)
+		},
+	}
+	defer func() {
+		if r := recover(); r != nil {
+			err = ec.Recover(ctx, r)
+			ec.Error(ctx, err)
+		}
+	}()
+	ctx = graphql.WithFieldContext(ctx, fc)
+	if fc.Args, err = ec.field_Query_latestSchema_args(ctx, field.ArgumentMap(ec.Variables)); err != nil {
+		ec.Error(ctx, err)
+		return fc, err
+	}
+	return fc, nil
+}
+
 func (ec *executionContext) _Query___type(ctx context.Context, field graphql.CollectedField) (ret graphql.Marshaler) {
 	return graphql.ResolveField(
 		ctx,
@@ -3997,6 +4091,28 @@ func (ec *executionContext) _Query(ctx context.Context, sel ast.SelectionSet) gr
 					func(ctx context.Context) graphql.Marshaler { return innerFunc(ctx, out) })
 			}
 
+			out.Concurrently(i, func(ctx context.Context) graphql.Marshaler { return rrm(innerCtx) })
+		case "latestSchema":
+			field := field
+
+			innerFunc := func(ctx context.Context, fs *graphql.FieldSet) (res graphql.Marshaler) {
+				defer func() {
+					if r := recover(); r != nil {
+						ec.Error(ctx, ec.Recover(ctx, r))
+					}
+				}()
+				res = ec._Query_latestSchema(ctx, field)
+				if res == graphql.Null {
+					atomic.AddUint32(&fs.Invalids, 1)
+				}
+				return res
+			}
+
+			rrm := func(ctx context.Context) graphql.Marshaler {
+				return ec.OperationContext.RootResolverMiddleware(ctx,
+					func(ctx context.Context) graphql.Marshaler { return innerFunc(ctx, out) })
+			}
+
 			out.Concurrently(i, func(ctx context.Context) graphql.Marshaler { return rrm(innerCtx) })
 		case "__type":
 			out.Values[i] = ec.OperationContext.RootResolverMiddleware(innerCtx, func(ctx context.Context) (res graphql.Marshaler) {

graph/schema.graphqls

@@ -1,6 +1,7 @@
 type Query {
   organizations: [Organization!]! @auth(user: true)
   supergraph(ref: String!, isAfter: String): Supergraph! @auth(organization: true)
+  latestSchema(ref: String!): SchemaUpdate! @auth(organization: true)
 }
 
 type Mutation {

graph/schema.resolvers.go

@@ -123,6 +123,13 @@ func (r *mutationResolver) UpdateSubGraph(ctx context.Context, input model.Input
 	// Publish schema update to subscribers
 	go func() {
 		services, lastUpdate := r.Cache.Services(orgId, input.Ref, "")
+		r.Logger.Info("Publishing schema update after subgraph change",
+			"ref", input.Ref,
+			"orgId", orgId,
+			"lastUpdate", lastUpdate,
+			"servicesCount", len(services),
+		)
+
 		subGraphs := make([]*model.SubGraph, len(services))
 		for i, id := range services {
 			sg, err := r.fetchSubGraph(context.Background(), id)
@@ -149,12 +156,21 @@ func (r *mutationResolver) UpdateSubGraph(ctx context.Context, input model.Input
 		}
 
 		// Publish to all subscribers of this ref
-		r.PubSub.Publish(input.Ref, &model.SchemaUpdate{
+		update := &model.SchemaUpdate{
 			Ref:               input.Ref,
 			ID:                lastUpdate,
 			SubGraphs:         subGraphs,
 			CosmoRouterConfig: &cosmoConfig,
-		})
+		}
+
+		r.Logger.Info("Publishing schema update to subscribers",
+			"ref", update.Ref,
+			"id", update.ID,
+			"subGraphsCount", len(update.SubGraphs),
+			"cosmoConfigLength", len(cosmoConfig),
+		)
+
+		r.PubSub.Publish(input.Ref, update)
 	}()
 
 	return r.toGqlSubGraph(subGraph), nil
@@ -222,11 +238,84 @@ func (r *queryResolver) Supergraph(ctx context.Context, ref string, isAfter *str
 	}, nil
 }
 
+// LatestSchema is the resolver for the latestSchema field.
+func (r *queryResolver) LatestSchema(ctx context.Context, ref string) (*model.SchemaUpdate, error) {
+	orgId := middleware.OrganizationFromContext(ctx)
+
+	r.Logger.Info("LatestSchema query",
+		"ref", ref,
+		"orgId", orgId,
+	)
+
+	_, err := r.apiKeyCanAccessRef(ctx, ref, false)
+	if err != nil {
+		r.Logger.Error("API key cannot access ref", "error", err, "ref", ref)
+		return nil, err
+	}
+
+	// Get current services and schema
+	services, lastUpdate := r.Cache.Services(orgId, ref, "")
+	r.Logger.Info("Fetching latest schema",
+		"ref", ref,
+		"orgId", orgId,
+		"lastUpdate", lastUpdate,
+		"servicesCount", len(services),
+	)
+
+	subGraphs := make([]*model.SubGraph, len(services))
+	for i, id := range services {
+		sg, err := r.fetchSubGraph(ctx, id)
+		if err != nil {
+			r.Logger.Error("fetch subgraph", "error", err, "id", id)
+			return nil, err
+		}
+		subGraphs[i] = &model.SubGraph{
+			ID:        sg.ID.String(),
+			Service:   sg.Service,
+			URL:       sg.Url,
+			WsURL:     sg.WSUrl,
+			Sdl:       sg.Sdl,
+			ChangedBy: sg.ChangedBy,
+			ChangedAt: sg.ChangedAt,
+		}
+	}
+
+	// Generate Cosmo router config
+	cosmoConfig, err := GenerateCosmoRouterConfig(subGraphs)
+	if err != nil {
+		r.Logger.Error("generate cosmo config", "error", err)
+		cosmoConfig = "" // Return empty if generation fails
+	}
+
+	update := &model.SchemaUpdate{
+		Ref:               ref,
+		ID:                lastUpdate,
+		SubGraphs:         subGraphs,
+		CosmoRouterConfig: &cosmoConfig,
+	}
+
+	r.Logger.Info("Latest schema fetched",
+		"ref", update.Ref,
+		"id", update.ID,
+		"subGraphsCount", len(update.SubGraphs),
+		"cosmoConfigLength", len(cosmoConfig),
+	)
+
+	return update, nil
+}
+
 // SchemaUpdates is the resolver for the schemaUpdates field.
 func (r *subscriptionResolver) SchemaUpdates(ctx context.Context, ref string) (<-chan *model.SchemaUpdate, error) {
 	orgId := middleware.OrganizationFromContext(ctx)
+
+	r.Logger.Info("SchemaUpdates subscription started",
+		"ref", ref,
+		"orgId", orgId,
+	)
+
 	_, err := r.apiKeyCanAccessRef(ctx, ref, false)
 	if err != nil {
+		r.Logger.Error("API key cannot access ref", "error", err, "ref", ref)
 		return nil, err
 	}
 
@@ -235,12 +324,22 @@ func (r *subscriptionResolver) SchemaUpdates(ctx context.Context, ref string) (<
 
 	// Send initial state immediately
 	go func() {
+		// Use background context for async operation
+		bgCtx := context.Background()
+
 		services, lastUpdate := r.Cache.Services(orgId, ref, "")
+		r.Logger.Info("Preparing initial schema update",
+			"ref", ref,
+			"orgId", orgId,
+			"lastUpdate", lastUpdate,
+			"servicesCount", len(services),
+		)
+
 		subGraphs := make([]*model.SubGraph, len(services))
 		for i, id := range services {
-			sg, err := r.fetchSubGraph(ctx, id)
+			sg, err := r.fetchSubGraph(bgCtx, id)
 			if err != nil {
-				r.Logger.Error("fetch subgraph for initial update", "error", err)
+				r.Logger.Error("fetch subgraph for initial update", "error", err, "id", id)
 				continue
 			}
 			subGraphs[i] = &model.SubGraph{
@@ -262,12 +361,21 @@ func (r *subscriptionResolver) SchemaUpdates(ctx context.Context, ref string) (<
 		}
 
 		// Send initial update
-		ch <- &model.SchemaUpdate{
+		update := &model.SchemaUpdate{
 			Ref:               ref,
 			ID:                lastUpdate,
 			SubGraphs:         subGraphs,
 			CosmoRouterConfig: &cosmoConfig,
 		}
+
+		r.Logger.Info("Sending initial schema update",
+			"ref", update.Ref,
+			"id", update.ID,
+			"subGraphsCount", len(update.SubGraphs),
+			"cosmoConfigLength", len(cosmoConfig),
+		)
+
+		ch <- update
 	}()
 
 	// Clean up subscription when context is done

middleware/auth.go

@@ -49,7 +49,9 @@ func (m *AuthMiddleware) Handler(next http.Handler) http.Handler {
 			_, _ = w.Write([]byte("Invalid API Key format"))
 			return
 		}
-		if organization := m.cache.OrganizationByAPIKey(hash.String(apiKey)); organization != nil {
+		hashedKey := hash.String(apiKey)
+		organization := m.cache.OrganizationByAPIKey(hashedKey)
+		if organization != nil {
 			ctx = context.WithValue(ctx, OrganizationKey, *organization)
 		}
 

middleware/auth_test.go

@@ -0,0 +1,467 @@
+package middleware
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	mw "github.com/auth0/go-jwt-middleware/v2"
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+	"gitlab.com/unboundsoftware/eventsourced/eventsourced"
+
+	"gitlab.com/unboundsoftware/schemas/domain"
+	"gitlab.com/unboundsoftware/schemas/hash"
+)
+
+// MockCache is a mock implementation of the Cache interface
+type MockCache struct {
+	mock.Mock
+}
+
+func (m *MockCache) OrganizationByAPIKey(apiKey string) *domain.Organization {
+	args := m.Called(apiKey)
+	if args.Get(0) == nil {
+		return nil
+	}
+	return args.Get(0).(*domain.Organization)
+}
+
+func TestAuthMiddleware_Handler_WithValidAPIKey(t *testing.T) {
+	// Setup
+	mockCache := new(MockCache)
+	authMiddleware := NewAuth(mockCache)
+
+	orgID := uuid.New()
+	expectedOrg := &domain.Organization{
+		BaseAggregate: eventsourced.BaseAggregate{
+			ID: eventsourced.IdFromString(orgID.String()),
+		},
+		Name: "Test Organization",
+	}
+
+	apiKey := "test-api-key-123"
+	hashedKey := hash.String(apiKey)
+
+	mockCache.On("OrganizationByAPIKey", hashedKey).Return(expectedOrg)
+
+	// Create a test handler that checks the context
+	var capturedOrg *domain.Organization
+	testHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if org := r.Context().Value(OrganizationKey); org != nil {
+			if o, ok := org.(domain.Organization); ok {
+				capturedOrg = &o
+			}
+		}
+		w.WriteHeader(http.StatusOK)
+	})
+
+	// Create request with API key in context
+	req := httptest.NewRequest(http.MethodGet, "/test", nil)
+	ctx := context.WithValue(req.Context(), ApiKey, apiKey)
+	req = req.WithContext(ctx)
+
+	rec := httptest.NewRecorder()
+
+	// Execute
+	authMiddleware.Handler(testHandler).ServeHTTP(rec, req)
+
+	// Assert
+	assert.Equal(t, http.StatusOK, rec.Code)
+	require.NotNil(t, capturedOrg)
+	assert.Equal(t, expectedOrg.Name, capturedOrg.Name)
+	assert.Equal(t, expectedOrg.ID.String(), capturedOrg.ID.String())
+	mockCache.AssertExpectations(t)
+}
+
+func TestAuthMiddleware_Handler_WithInvalidAPIKey(t *testing.T) {
+	// Setup
+	mockCache := new(MockCache)
+	authMiddleware := NewAuth(mockCache)
+
+	apiKey := "invalid-api-key"
+	hashedKey := hash.String(apiKey)
+
+	mockCache.On("OrganizationByAPIKey", hashedKey).Return(nil)
+
+	// Create a test handler that checks the context
+	var capturedOrg *domain.Organization
+	testHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if org := r.Context().Value(OrganizationKey); org != nil {
+			if o, ok := org.(domain.Organization); ok {
+				capturedOrg = &o
+			}
+		}
+		w.WriteHeader(http.StatusOK)
+	})
+
+	// Create request with API key in context
+	req := httptest.NewRequest(http.MethodGet, "/test", nil)
+	ctx := context.WithValue(req.Context(), ApiKey, apiKey)
+	req = req.WithContext(ctx)
+
+	rec := httptest.NewRecorder()
+
+	// Execute
+	authMiddleware.Handler(testHandler).ServeHTTP(rec, req)
+
+	// Assert
+	assert.Equal(t, http.StatusOK, rec.Code)
+	assert.Nil(t, capturedOrg, "Organization should not be set for invalid API key")
+	mockCache.AssertExpectations(t)
+}
+
+func TestAuthMiddleware_Handler_WithoutAPIKey(t *testing.T) {
+	// Setup
+	mockCache := new(MockCache)
+	authMiddleware := NewAuth(mockCache)
+
+	// The middleware always hashes the API key (even if empty) and calls the cache
+	emptyKeyHash := hash.String("")
+	mockCache.On("OrganizationByAPIKey", emptyKeyHash).Return(nil)
+
+	// Create a test handler that checks the context
+	var capturedOrg *domain.Organization
+	testHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if org := r.Context().Value(OrganizationKey); org != nil {
+			if o, ok := org.(domain.Organization); ok {
+				capturedOrg = &o
+			}
+		}
+		w.WriteHeader(http.StatusOK)
+	})
+
+	// Create request without API key
+	req := httptest.NewRequest(http.MethodGet, "/test", nil)
+	rec := httptest.NewRecorder()
+
+	// Execute
+	authMiddleware.Handler(testHandler).ServeHTTP(rec, req)
+
+	// Assert
+	assert.Equal(t, http.StatusOK, rec.Code)
+	assert.Nil(t, capturedOrg, "Organization should not be set without API key")
+	mockCache.AssertExpectations(t)
+}
+
+func TestAuthMiddleware_Handler_WithValidJWT(t *testing.T) {
+	// Setup
+	mockCache := new(MockCache)
+	authMiddleware := NewAuth(mockCache)
+
+	// The middleware always hashes the API key (even if empty) and calls the cache
+	emptyKeyHash := hash.String("")
+	mockCache.On("OrganizationByAPIKey", emptyKeyHash).Return(nil)
+
+	userID := "user-123"
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
+		"sub": userID,
+	})
+
+	// Create a test handler that checks the context
+	var capturedUser string
+	testHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if user := r.Context().Value(UserKey); user != nil {
+			if u, ok := user.(string); ok {
+				capturedUser = u
+			}
+		}
+		w.WriteHeader(http.StatusOK)
+	})
+
+	// Create request with JWT token in context
+	req := httptest.NewRequest(http.MethodGet, "/test", nil)
+	ctx := context.WithValue(req.Context(), mw.ContextKey{}, token)
+	req = req.WithContext(ctx)
+
+	rec := httptest.NewRecorder()
+
+	// Execute
+	authMiddleware.Handler(testHandler).ServeHTTP(rec, req)
+
+	// Assert
+	assert.Equal(t, http.StatusOK, rec.Code)
+	assert.Equal(t, userID, capturedUser)
+}
+
+func TestAuthMiddleware_Handler_APIKeyErrorHandling(t *testing.T) {
+	// Setup
+	mockCache := new(MockCache)
+	authMiddleware := NewAuth(mockCache)
+
+	testHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+	})
+
+	// Create request with invalid API key type in context
+	req := httptest.NewRequest(http.MethodGet, "/test", nil)
+	ctx := context.WithValue(req.Context(), ApiKey, 12345) // Invalid type
+	req = req.WithContext(ctx)
+
+	rec := httptest.NewRecorder()
+
+	// Execute
+	authMiddleware.Handler(testHandler).ServeHTTP(rec, req)
+
+	// Assert
+	assert.Equal(t, http.StatusInternalServerError, rec.Code)
+	assert.Contains(t, rec.Body.String(), "Invalid API Key format")
+}
+
+func TestAuthMiddleware_Handler_JWTErrorHandling(t *testing.T) {
+	// Setup
+	mockCache := new(MockCache)
+	authMiddleware := NewAuth(mockCache)
+
+	testHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+	})
+
+	// Create request with invalid JWT token type in context
+	req := httptest.NewRequest(http.MethodGet, "/test", nil)
+	ctx := context.WithValue(req.Context(), mw.ContextKey{}, "not-a-token") // Invalid type
+	req = req.WithContext(ctx)
+
+	rec := httptest.NewRecorder()
+
+	// Execute
+	authMiddleware.Handler(testHandler).ServeHTTP(rec, req)
+
+	// Assert
+	assert.Equal(t, http.StatusInternalServerError, rec.Code)
+	assert.Contains(t, rec.Body.String(), "Invalid JWT token format")
+}
+
+func TestAuthMiddleware_Handler_BothJWTAndAPIKey(t *testing.T) {
+	// Setup
+	mockCache := new(MockCache)
+	authMiddleware := NewAuth(mockCache)
+
+	orgID := uuid.New()
+	expectedOrg := &domain.Organization{
+		BaseAggregate: eventsourced.BaseAggregate{
+			ID: eventsourced.IdFromString(orgID.String()),
+		},
+		Name: "Test Organization",
+	}
+
+	userID := "user-123"
+	apiKey := "test-api-key-123"
+	hashedKey := hash.String(apiKey)
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
+		"sub": userID,
+	})
+
+	mockCache.On("OrganizationByAPIKey", hashedKey).Return(expectedOrg)
+
+	// Create a test handler that checks both user and organization in context
+	var capturedUser string
+	var capturedOrg *domain.Organization
+	testHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if user := r.Context().Value(UserKey); user != nil {
+			if u, ok := user.(string); ok {
+				capturedUser = u
+			}
+		}
+		if org := r.Context().Value(OrganizationKey); org != nil {
+			if o, ok := org.(domain.Organization); ok {
+				capturedOrg = &o
+			}
+		}
+		w.WriteHeader(http.StatusOK)
+	})
+
+	// Create request with both JWT and API key in context
+	req := httptest.NewRequest(http.MethodGet, "/test", nil)
+	ctx := context.WithValue(req.Context(), mw.ContextKey{}, token)
+	ctx = context.WithValue(ctx, ApiKey, apiKey)
+	req = req.WithContext(ctx)
+
+	rec := httptest.NewRecorder()
+
+	// Execute
+	authMiddleware.Handler(testHandler).ServeHTTP(rec, req)
+
+	// Assert
+	assert.Equal(t, http.StatusOK, rec.Code)
+	assert.Equal(t, userID, capturedUser)
+	require.NotNil(t, capturedOrg)
+	assert.Equal(t, expectedOrg.Name, capturedOrg.Name)
+	mockCache.AssertExpectations(t)
+}
+
+func TestUserFromContext(t *testing.T) {
+	tests := []struct {
+		name     string
+		ctx      context.Context
+		expected string
+	}{
+		{
+			name:     "with valid user",
+			ctx:      context.WithValue(context.Background(), UserKey, "user-123"),
+			expected: "user-123",
+		},
+		{
+			name:     "without user",
+			ctx:      context.Background(),
+			expected: "",
+		},
+		{
+			name:     "with invalid type",
+			ctx:      context.WithValue(context.Background(), UserKey, 123),
+			expected: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := UserFromContext(tt.ctx)
+			assert.Equal(t, tt.expected, result)
+		})
+	}
+}
+
+func TestOrganizationFromContext(t *testing.T) {
+	orgID := uuid.New()
+	org := domain.Organization{
+		BaseAggregate: eventsourced.BaseAggregate{
+			ID: eventsourced.IdFromString(orgID.String()),
+		},
+		Name: "Test Org",
+	}
+
+	tests := []struct {
+		name     string
+		ctx      context.Context
+		expected string
+	}{
+		{
+			name:     "with valid organization",
+			ctx:      context.WithValue(context.Background(), OrganizationKey, org),
+			expected: orgID.String(),
+		},
+		{
+			name:     "without organization",
+			ctx:      context.Background(),
+			expected: "",
+		},
+		{
+			name:     "with invalid type",
+			ctx:      context.WithValue(context.Background(), OrganizationKey, "not-an-org"),
+			expected: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := OrganizationFromContext(tt.ctx)
+			assert.Equal(t, tt.expected, result)
+		})
+	}
+}
+
+func TestAuthMiddleware_Directive_RequiresUser(t *testing.T) {
+	mockCache := new(MockCache)
+	authMiddleware := NewAuth(mockCache)
+
+	requireUser := true
+
+	// Test with user present
+	ctx := context.WithValue(context.Background(), UserKey, "user-123")
+	_, err := authMiddleware.Directive(ctx, nil, func(ctx context.Context) (interface{}, error) {
+		return "success", nil
+	}, &requireUser, nil)
+	assert.NoError(t, err)
+
+	// Test without user
+	ctx = context.Background()
+	_, err = authMiddleware.Directive(ctx, nil, func(ctx context.Context) (interface{}, error) {
+		return "success", nil
+	}, &requireUser, nil)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "no user available in request")
+}
+
+func TestAuthMiddleware_Directive_RequiresOrganization(t *testing.T) {
+	mockCache := new(MockCache)
+	authMiddleware := NewAuth(mockCache)
+
+	requireOrg := true
+	orgID := uuid.New()
+	org := domain.Organization{
+		BaseAggregate: eventsourced.BaseAggregate{
+			ID: eventsourced.IdFromString(orgID.String()),
+		},
+		Name: "Test Org",
+	}
+
+	// Test with organization present
+	ctx := context.WithValue(context.Background(), OrganizationKey, org)
+	_, err := authMiddleware.Directive(ctx, nil, func(ctx context.Context) (interface{}, error) {
+		return "success", nil
+	}, nil, &requireOrg)
+	assert.NoError(t, err)
+
+	// Test without organization
+	ctx = context.Background()
+	_, err = authMiddleware.Directive(ctx, nil, func(ctx context.Context) (interface{}, error) {
+		return "success", nil
+	}, nil, &requireOrg)
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "no organization available in request")
+}
+
+func TestAuthMiddleware_Directive_RequiresBoth(t *testing.T) {
+	mockCache := new(MockCache)
+	authMiddleware := NewAuth(mockCache)
+
+	requireUser := true
+	requireOrg := true
+	orgID := uuid.New()
+	org := domain.Organization{
+		BaseAggregate: eventsourced.BaseAggregate{
+			ID: eventsourced.IdFromString(orgID.String()),
+		},
+		Name: "Test Org",
+	}
+
+	// Test with both present
+	ctx := context.WithValue(context.Background(), UserKey, "user-123")
+	ctx = context.WithValue(ctx, OrganizationKey, org)
+	_, err := authMiddleware.Directive(ctx, nil, func(ctx context.Context) (interface{}, error) {
+		return "success", nil
+	}, &requireUser, &requireOrg)
+	assert.NoError(t, err)
+
+	// Test with only user
+	ctx = context.WithValue(context.Background(), UserKey, "user-123")
+	_, err = authMiddleware.Directive(ctx, nil, func(ctx context.Context) (interface{}, error) {
+		return "success", nil
+	}, &requireUser, &requireOrg)
+	assert.Error(t, err)
+
+	// Test with only organization
+	ctx = context.WithValue(context.Background(), OrganizationKey, org)
+	_, err = authMiddleware.Directive(ctx, nil, func(ctx context.Context) (interface{}, error) {
+		return "success", nil
+	}, &requireUser, &requireOrg)
+	assert.Error(t, err)
+}
+
+func TestAuthMiddleware_Directive_NoRequirements(t *testing.T) {
+	mockCache := new(MockCache)
+	authMiddleware := NewAuth(mockCache)
+
+	// Test with no requirements
+	ctx := context.Background()
+	result, err := authMiddleware.Directive(ctx, nil, func(ctx context.Context) (interface{}, error) {
+		return "success", nil
+	}, nil, nil)
+	assert.NoError(t, err)
+	assert.Equal(t, "success", result)
+}