Fix invalid output when upstream re-resolved

Author: u5surf

src/ngx_http_vhost_traffic_status_display_json.c

@@ -607,6 +607,55 @@ ngx_http_vhost_traffic_status_display_set_upstream_group(ngx_http_request_t *r,
 
             zone = 1;
 
+#if nginx_version > 1027003
+            for (peers = uscf->peer.data; peers; peers = peers->next) {
+                ngx_http_upstream_rr_peers_rlock(peers);
+                for (peer = peers->peer; peer; peer = peer->next) {
+                    p = ngx_cpymem(p, uscf->host.data, uscf->host.len);
+                    *p++ = NGX_HTTP_VHOST_TRAFFIC_STATUS_KEY_SEPARATOR;
+                    p = ngx_cpymem(p, peer->name.data, peer->name.len);
+
+                    dst.len = uscf->host.len + sizeof("@") - 1 + peer->name.len;
+
+                    rc = ngx_http_vhost_traffic_status_node_generate_key(r->pool, &key, &dst, type);
+                    if (rc != NGX_OK) {
+                        ngx_http_upstream_rr_peers_unlock(peers);
+                        return buf;
+                    }
+
+                    hash = ngx_crc32_short(key.data, key.len);
+                    node = ngx_http_vhost_traffic_status_node_lookup(ctx->rbtree, &key, hash);
+
+                    usn.weight = peer->weight;
+                    usn.max_fails = peer->max_fails;
+                    usn.fail_timeout = peer->fail_timeout;
+                    usn.backup = 0;
+#if (NGX_HTTP_UPSTREAM_CHECK)
+                    if (ngx_http_upstream_check_peer_down(peer->check_index)) {
+                        usn.down = 1;
+
+                    } else {
+                        usn.down = 0;
+                    }
+#else
+                    usn.down = (peer->fails >= peer->max_fails || peer->down);
+#endif
+
+                    usn.name = peer->name;
+
+                    if (node != NULL) {
+                        vtsn = (ngx_http_vhost_traffic_status_node_t *) &node->color;
+                        buf = ngx_http_vhost_traffic_status_display_set_upstream_node(r, buf, &usn, vtsn);
+                    } else {
+                        buf = ngx_http_vhost_traffic_status_display_set_upstream_node(r, buf, &usn, NULL);
+                    }
+                    p = dst.data;
+                }
+                ngx_http_upstream_rr_peers_unlock(peers);
+            }
+            goto last;
+#endif
+
             peers = uscf->peer.data;
 
             ngx_http_upstream_rr_peers_rlock(peers);
@@ -718,6 +767,7 @@ ngx_http_vhost_traffic_status_display_set_upstream_group(ngx_http_request_t *r,
                 }
             }
 
+last:
             if (s == buf) {
                 buf = o;