From 8d8792fdf57faf99e6f21e9b46b95894d4ef4797 Mon Sep 17 00:00:00 2001
From: samugi <samuele@konghq.com>
Date: Wed, 27 Mar 2024 17:40:54 +0100
Subject: [PATCH] fix(plugins): compatibility with older data planes

added compatibility with older data planes for the new tracing headers
propagation configuration options
---
 kong/clustering/compat/removed_fields.lua              | 10 ++++++++++
 .../09-hybrid_mode/09-config-compat_spec.lua           |  4 ++++
 2 files changed, 14 insertions(+)

diff --git a/kong/clustering/compat/removed_fields.lua b/kong/clustering/compat/removed_fields.lua
index e0083de8a9b1..9c20b5d93ca5 100644
--- a/kong/clustering/compat/removed_fields.lua
+++ b/kong/clustering/compat/removed_fields.lua
@@ -116,4 +116,14 @@ return {
       "sampling_rate",
     },
   },
+
+  -- Any dataplane older than 3.7.0
+  [3007000000] = {
+    opentelemetry = {
+      "propagation",
+    },
+    zipkin = {
+      "propagation",
+    },
+  },
 }
diff --git a/spec/02-integration/09-hybrid_mode/09-config-compat_spec.lua b/spec/02-integration/09-hybrid_mode/09-config-compat_spec.lua
index f1180b6884a5..b64af4cf5c6f 100644
--- a/spec/02-integration/09-hybrid_mode/09-config-compat_spec.lua
+++ b/spec/02-integration/09-hybrid_mode/09-config-compat_spec.lua
@@ -251,6 +251,7 @@ describe("CP/DP config compat transformations #" .. strategy, function()
         local expected_otel_prior_35 = utils.cycle_aware_deep_copy(opentelemetry)
         expected_otel_prior_35.config.header_type = "preserve"
         expected_otel_prior_35.config.sampling_rate = nil
+        expected_otel_prior_35.config.propagation = nil
         do_assert(utils.uuid(), "3.4.0", expected_otel_prior_35)
 
         -- cleanup
@@ -271,6 +272,7 @@ describe("CP/DP config compat transformations #" .. strategy, function()
         local expected_otel_prior_34 = utils.cycle_aware_deep_copy(opentelemetry)
         expected_otel_prior_34.config.header_type = "preserve"
         expected_otel_prior_34.config.sampling_rate = nil
+        expected_otel_prior_34.config.propagation = nil
         do_assert(utils.uuid(), "3.3.0", expected_otel_prior_34)
 
         -- cleanup
@@ -296,6 +298,7 @@ describe("CP/DP config compat transformations #" .. strategy, function()
         local expected_zipkin_prior_35 = utils.cycle_aware_deep_copy(zipkin)
         expected_zipkin_prior_35.config.header_type = "preserve"
         expected_zipkin_prior_35.config.default_header_type = "b3"
+        expected_zipkin_prior_35.config.propagation = nil
         do_assert(utils.uuid(), "3.4.0", expected_zipkin_prior_35)
 
         -- cleanup
@@ -316,6 +319,7 @@ describe("CP/DP config compat transformations #" .. strategy, function()
         local expected_zipkin_prior_34 = utils.cycle_aware_deep_copy(zipkin)
         expected_zipkin_prior_34.config.header_type = "preserve"
         expected_zipkin_prior_34.config.default_header_type = "b3"
+        expected_zipkin_prior_34.config.propagation = nil
         do_assert(utils.uuid(), "3.3.0", expected_zipkin_prior_34)
 
         -- cleanup