Fix serverless task (#937)

GODRIVER-2389 Forbid serverless on unified change streams tests.
GODRIVER-2214 Update serverless testing for load balancer fronting single proxy.

Author: benjirewis

.evergreen/config.yml

@@ -530,12 +530,10 @@ functions:
           export GOFLAGS=-mod=vendor
           AUTH="auth" \
           SSL="ssl" \
-          MONGODB_URI="${SINGLE_ATLASPROXY_SERVERLESS_URI}" \
+          MONGODB_URI="${SERVERLESS_URI}" \
           SERVERLESS="serverless" \
           SERVERLESS_ATLAS_USER="${SERVERLESS_ATLAS_USER}" \
           SERVERLESS_ATLAS_PASSWORD="${SERVERLESS_ATLAS_PASSWORD}" \
-          SINGLE_MONGOS_LB_URI="${SINGLE_ATLASPROXY_SERVERLESS_URI}" \
-          MULTI_MONGOS_LB_URI="${MULTI_ATLASPROXY_SERVERLESS_URI}" \
           MONGO_GO_DRIVER_COMPRESSOR=${MONGO_GO_DRIVER_COMPRESSOR} \
           make evg-test-serverless
 

data/change-streams/unified/change-streams-pre_and_post_images.json

@@ -1,14 +1,15 @@
 {
   "description": "change-streams-pre_and_post_images",
-  "schemaVersion": "1.0",
+  "schemaVersion": "1.4",
   "runOnRequirements": [
     {
       "minServerVersion": "6.0.0",
       "topologies": [
         "replicaset",
         "sharded-replicaset",
         "load-balanced"
-      ]
+      ],
+      "serverless": "forbid"
     }
   ],
   "createEntities": [

data/change-streams/unified/change-streams-pre_and_post_images.yml

@@ -1,10 +1,11 @@
 description: "change-streams-pre_and_post_images"
 
-schemaVersion: "1.3"
+schemaVersion: "1.4"
 
 runOnRequirements:
   - minServerVersion: "6.0.0"
     topologies: [ replicaset, sharded-replicaset, load-balanced ]
+    serverless: forbid
 
 createEntities:
   - client:

data/change-streams/unified/change-streams.json

@@ -1,12 +1,14 @@
 {
   "description": "change-streams",
-  "schemaVersion": "1.0",
+  "schemaVersion": "1.4",
   "runOnRequirements": [
     {
+      "minServerVersion": "3.6",
       "topologies": [
         "replicaset",
         "sharded-replicaset"
-      ]
+      ],
+      "serverless": "forbid"
     }
   ],
   "createEntities": [

data/change-streams/unified/change-streams.yml

@@ -1,7 +1,12 @@
 description: "change-streams"
-schemaVersion: "1.0"
+
+schemaVersion: "1.4"
+
 runOnRequirements:
-  - topologies: [ replicaset, sharded-replicaset ]
+  - minServerVersion: "3.6"
+    topologies: [ replicaset, sharded-replicaset ]
+    serverless: forbid
+
 createEntities:
   - client:
       id: &client0 client0

data/unified-test-format/valid-pass/poc-change-streams.json

@@ -1,6 +1,11 @@
 {
   "description": "poc-change-streams",
-  "schemaVersion": "1.0",
+  "schemaVersion": "1.4",
+  "runOnRequirements": [
+    {
+      "serverless": "forbid"
+    }
+  ],
   "createEntities": [
     {
       "client": {

data/unified-test-format/valid-pass/poc-change-streams.yml

@@ -1,6 +1,9 @@
 description: "poc-change-streams"
 
-schemaVersion: "1.0"
+schemaVersion: "1.4"
+
+runOnRequirements:
+  - serverless: forbid
 
 createEntities:
   # Entities for creating changeStreams

mongo/integration/mtest/global_state.go

@@ -36,6 +36,11 @@ func ClusterURI() string {
 	return testContext.connString.Original
 }
 
+// Serverless returns whether the test is running against a serverless instance.
+func Serverless() bool {
+	return testContext.serverless
+}
+
 // SingleMongosLoadBalancerURI returns the URI for a load balancer fronting a single mongos. This will only be set
 // if the cluster is load balanced.
 func SingleMongosLoadBalancerURI() string {

mongo/integration/mtest/setup.go

@@ -179,9 +179,10 @@ func Setup(setupOpts ...*SetupOptions) error {
 		}
 	}
 
-	// For load balanced clusters, retrieve the required LB URIs and add additional information (e.g. TLS options) to
+	// For non-serverless, load balanced clusters, retrieve the required LB URIs and add additional information (e.g. TLS options) to
 	// them if necessary.
-	if testContext.topoKind == LoadBalanced {
+	testContext.serverless = os.Getenv("SERVERLESS") == "serverless"
+	if !testContext.serverless && testContext.topoKind == LoadBalanced {
 		singleMongosURI := os.Getenv("SINGLE_MONGOS_LB_URI")
 		if singleMongosURI == "" {
 			return errors.New("SINGLE_MONGOS_LB_URI must be set when running against load balanced clusters")
@@ -203,7 +204,6 @@ func Setup(setupOpts ...*SetupOptions) error {
 
 	testContext.authEnabled = os.Getenv("AUTH") == "auth"
 	testContext.sslEnabled = os.Getenv("SSL") == "ssl"
-	testContext.serverless = os.Getenv("SERVERLESS") == "serverless"
 	biRes, err := testContext.client.Database("admin").RunCommand(context.Background(), bson.D{{"buildInfo", 1}}).DecodeBytes()
 	if err != nil {
 		return fmt.Errorf("buildInfo error: %v", err)

mongo/integration/unified/client_entity.go

@@ -142,11 +142,11 @@ func newClientEntity(ctx context.Context, em *EntityMap, entityOptions *entityOp
 }
 
 func getURIForClient(opts *entityOptions) string {
-	if mtest.ClusterTopologyKind() != mtest.LoadBalanced {
+	if mtest.Serverless() || mtest.ClusterTopologyKind() != mtest.LoadBalanced {
 		return mtest.ClusterURI()
 	}
 
-	// For load-balanced deployments, UseMultipleMongoses is used to determine the load balancer URI. If set to false,
+	// For non-serverless load-balanced deployments, UseMultipleMongoses is used to determine the load balancer URI. If set to false,
 	// the LB fronts a single server. If unset or explicitly true, the LB fronts multiple mongos servers.
 	switch {
 	case opts.UseMultipleMongoses != nil && !*opts.UseMultipleMongoses: