[1.18] 6748-spawn-upstream-span-backport (#10566)

Author: EItanya

changelog/v1.18.4/6748-spawn-upstream-span-backport.yaml

@@ -0,0 +1,10 @@
+
+changelog:
+- type: FIX
+  issueLink: https://github.com/solo-io/solo-projects/issues/6748
+  resolvesIssue: true
+  description: > 
+    Expose spawn_upstream_span on the tracing API. This setting tells
+    envoy to spawn a new span for each upstream request.
+
+

docs/content/reference/api/github.com/solo-io/gloo/projects/gloo/api/v1/options/tracing/tracing.proto.sk.md

@@ -1143,6 +1143,8 @@ spec:
                                   nullable: true
                                   type: string
                                 type: array
+                              spawnUpstreamSpan:
+                                type: boolean
                               tracePercentages:
                                 properties:
                                   clientSamplePercentage:
@@ -1821,6 +1823,8 @@ spec:
                                   nullable: true
                                   type: string
                                 type: array
+                              spawnUpstreamSpan:
+                                type: boolean
                               tracePercentages:
                                 properties:
                                   clientSamplePercentage:
@@ -3165,6 +3169,8 @@ spec:
                                             nullable: true
                                             type: string
                                           type: array
+                                        spawnUpstreamSpan:
+                                          type: boolean
                                         tracePercentages:
                                           properties:
                                             clientSamplePercentage:

install/helm/gloo/crds/gateway.solo.io_v1_Gateway.yaml

@@ -1134,6 +1134,8 @@ spec:
                               nullable: true
                               type: string
                             type: array
+                          spawnUpstreamSpan:
+                            type: boolean
                           tracePercentages:
                             properties:
                               clientSamplePercentage:

install/helm/gloo/crds/gateway.solo.io_v1_HttpListenerOption.yaml

@@ -1137,6 +1137,8 @@ spec:
                                   nullable: true
                                   type: string
                                 type: array
+                              spawnUpstreamSpan:
+                                type: boolean
                               tracePercentages:
                                 properties:
                                   clientSamplePercentage:

install/helm/gloo/crds/gateway.solo.io_v1_MatchableHttpGateway.yaml

@@ -43,6 +43,11 @@ message ListenerTracingSettings {
     repeated TracingTagEnvironmentVariable environment_variables_for_tags = 6;
     // Optional. If specified, Envoy will include the literals with the given tag as tracing tags.
     repeated TracingTagLiteral literals_for_tags = 7;
+    
+    // Optional
+    // Create separate tracing span for each upstream request if true. And if this flag is set to true, the tracing provider will assume that Envoy 
+    // will be independent hop in the trace chain and may set span type to client or server based on this flag. 
+    bool spawn_upstream_span = 10;
 }
 
 // Contains settings for configuring Envoy's tracing capabilities at the route level.