component/trafficserver: fix TSHttpTxnCacheLookupStatusGet for cache existing POST case.

component/trafficserver/buildout.cfg

@@ -40,6 +40,11 @@ configure-options =
   --disable-hwloc
   --enable-experimental-plugins
   --disable-posix-cap
+patch-options = -p1
+# https://github.com/apache/trafficserver/pull/8545 + https://github.com/apache/trafficserver/pull/8617
+# (see https://github.com/apache/trafficserver/issues/8539 for the detail)
+patches =
+  ${:_profile_base_location_}/trafficserver-9.1.1-TSHttpTxnCacheLookupStatusGet-fix.patch#d8ed3db3a48e97eb72aaaf7d7598a2d2
 environment =
   PATH=${libtool:location}/bin:${make:location}/bin:${patch:location}/bin:${perl:location}/bin:${pkgconfig:location}/bin:%(PATH)s
   LDFLAGS =-L${openssl:location}/lib -Wl,-rpath=${openssl:location}/lib -L${tcl:location}/lib -Wl,-rpath=${tcl:location}/lib -L${zlib:location}/lib -Wl,-rpath=${zlib:location}/lib -Wl,-rpath=${luajit:location}/lib  -lm

component/trafficserver/trafficserver-9.1.1-TSHttpTxnCacheLookupStatusGet-fix.patch

+diff -ur trafficserver-9.1.1.orig/src/traffic_server/InkAPI.cc trafficserver-9.1.1/src/traffic_server/InkAPI.cc
+--- trafficserver-9.1.1.orig/src/traffic_server/InkAPI.cc	2021-10-29 15:38:50.000000000 +0000
++++ trafficserver-9.1.1/src/traffic_server/InkAPI.cc	2022-01-31 10:37:24.675347079 +0000
+@@ -5443,7 +5443,11 @@
+     break;
+   case HttpTransact::CACHE_LOOKUP_HIT_WARNING:
+   case HttpTransact::CACHE_LOOKUP_HIT_FRESH:
+-    *lookup_status = TS_CACHE_LOOKUP_HIT_FRESH;
++    if (HttpTransact::need_to_revalidate(&sm->t_state)) {
++      *lookup_status = TS_CACHE_LOOKUP_MISS;
++    } else {
++      *lookup_status = TS_CACHE_LOOKUP_HIT_FRESH;
++    }
+     break;
+   case HttpTransact::CACHE_LOOKUP_SKIPPED:
+     *lookup_status = TS_CACHE_LOOKUP_SKIPPED;