in mesh upstreams

changelog/v1.18.0-beta23/mesh-upstream.yaml

@@ -0,0 +1,3 @@
+changelog:
+  - type: NON_USER_FACING
+    description: Add `inMesh` to static upstreams. This isn't user facing for OSS Gloo.

install/helm/gloo/crds/gloo.solo.io_v1_Upstream.yaml

@@ -1658,6 +1658,8 @@ spec:
                           type: string
                       type: object
                     type: array
+                  inMesh:
+                    type: boolean
                   serviceSpec:
                     properties:
                       graphql:

projects/gloo/api/v1/options/static/static.proto

@@ -33,6 +33,11 @@ message UpstreamSpec {
     // If both this and host.sni_addr are set, host.sni_addr has priority.
     // defaults to "true".
     google.protobuf.BoolValue auto_sni_rewrite = 6;
+
+    // In mesh indicates that hosts references ServiceEntries, possibly the
+    // ServiceEntries derived from VirtualDestination, to route upstream
+    // traffic.
+    bool in_mesh = 7;
 }
 
 // Represents a single instance of an upstream
@@ -72,4 +77,4 @@ message Host {
     // - "envoy.transport_socket_match"
     // - "io.solo.health_checkers.advanced_http"
     map<string, google.protobuf.Struct> metadata = 6;
-}
+}

projects/gloo/pkg/plugins/static/plugin.go

@@ -57,6 +57,9 @@ func (p *plugin) Resolve(u *v1.Upstream) (*url.URL, error) {
 	if !ok {
 		return nil, nil
 	}
+	if staticSpec.Static.GetInMesh() {
+		return nil, nil
+	}
 	if len(staticSpec.Static.GetHosts()) == 0 {
 		return nil, errors.Errorf("must provide at least 1 host in static spec")
 	}
@@ -74,6 +77,9 @@ func (p *plugin) ProcessUpstream(params plugins.Params, in *v1.Upstream, out *en
 		// not ours
 		return nil
 	}
+	if staticSpec.Static.GetInMesh() {
+		return nil
+	}
 
 	spec := staticSpec.Static
 	var foundSslPort bool