rgw: send Content-Length in response for GET on Swift account.

Fixes: #12158
Signed-off-by: Radoslaw Zarzynski <rzarzynski@mirantis.com>

diff --git a/src/common/config_opts.h b/src/common/config_opts.h
index 93bb608f7e33a1481889779c612ede30353ff6b4..f91baffea1150f22994a93ce5f07cd719ae7a6cb 100644 (file)
--- a/src/common/config_opts.h
+++ b/src/common/config_opts.h
@@ -972,6 +972,7 @@ OPTION(rgw_swift_url_prefix, OPT_STR, "swift") // entry point for which a url is
 OPTION(rgw_swift_auth_url, OPT_STR, "")        // default URL to go and verify tokens for v1 auth (if not using internal swift auth)
 OPTION(rgw_swift_auth_entry, OPT_STR, "auth")  // entry point for which a url is considered a swift auth url
 OPTION(rgw_swift_tenant_name, OPT_STR, "")  // tenant name to use for swift access
+OPTION(rgw_swift_enforce_content_length, OPT_BOOL, false)  // enforce generation of Content-Length even in cost of performance or scalability
 OPTION(rgw_keystone_url, OPT_STR, "")  // url for keystone server
 OPTION(rgw_keystone_admin_token, OPT_STR, "")  // keystone admin token (shared secret)
 OPTION(rgw_keystone_admin_user, OPT_STR, "")  // keystone admin user name

diff --git a/src/rgw/rgw_rest_swift.cc b/src/rgw/rgw_rest_swift.cc
index 242a7d9e992abe67f5cd857207ff002e377a1e78..2f9b44c5efb545b986a1d8f57c74355910cb8a08 100644 (file)
--- a/src/rgw/rgw_rest_swift.cc
+++ b/src/rgw/rgw_rest_swift.cc
@@ -105,10 +105,18 @@ void RGWListBuckets_ObjStore_SWIFT::send_response_begin(bool has_buckets)
     ret = STATUS_NO_CONTENT;
     set_req_state_err(s, ret);
   }
-  /* Adding account stats in the header to keep align with Swift API */
-  dump_account_metadata(s, buckets_count, buckets_objcount, buckets_size, buckets_size_rounded, attrs);
-  dump_errno(s);
-  end_header(s, NULL, NULL, NO_CONTENT_LENGTH, true);
+
+  if (!g_conf->rgw_swift_enforce_content_length) {
+    /* Adding account stats in the header to keep align with Swift API */
+    dump_account_metadata(s,
+            buckets_count,
+            buckets_objcount,
+            buckets_size,
+            buckets_size_rounded,
+            attrs);
+    dump_errno(s);
+    end_header(s, NULL, NULL, NO_CONTENT_LENGTH, true);
+  }
 
   if (!ret) {
     dump_start(s);
@@ -135,7 +143,9 @@ void RGWListBuckets_ObjStore_SWIFT::send_response_data(RGWUserBuckets& buckets)
       s->formatter->dump_int("bytes", obj.size);
     }
     s->formatter->close_section();
-    rgw_flush_formatter(s, s->formatter);
+    if (!g_conf->rgw_swift_enforce_content_length) {
+      rgw_flush_formatter(s, s->formatter);
+    }
   }
 }
 
@@ -143,6 +153,21 @@ void RGWListBuckets_ObjStore_SWIFT::send_response_end()
 {
   if (sent_data) {
     s->formatter->close_section();
+  }
+
+  if (g_conf->rgw_swift_enforce_content_length) {
+    /* Adding account stats in the header to keep align with Swift API */
+    dump_account_metadata(s,
+            buckets_count,
+            buckets_objcount,
+            buckets_size,
+            buckets_size_rounded,
+            attrs);
+    dump_errno(s);
+    end_header(s, NULL, NULL, s->formatter->get_len(), true);
+  }
+
+  if (sent_data || g_conf->rgw_swift_enforce_content_length) {
     rgw_flush_formatter_and_reset(s, s->formatter);
   }
 }