lock the context while rendering json

2 files changed, 4 insertions, 0 deletions

diff --git a/aclk/aclk-schemas b/aclk/aclk-schemas
-Subproject 3252118bd547640251356629f0df05eaf952ac3
+Subproject 944fa9a4aa77129c2c429e1e59c3485c888ce76
diff --git a/database/rrdcontext.c b/database/rrdcontext.c
index c90b8ba004..bf9731e75b 100644
--- a/database/rrdcontext.c
+++ b/database/rrdcontext.c
@@ -2006,6 +2006,8 @@ static inline int rrdcontext_to_json_callback(const char *id, void *value, void
     else
         buffer_sprintf(wb, "\t\t\"%s\": {", id);
 
+    rrdcontext_lock(rc);
+
     buffer_sprintf(wb,
                    "\n\t\t\t\"version\":%lu"
                    ",\n\t\t\t\"hub_version\":%lu"
@@ -2052,6 +2054,8 @@ static inline int rrdcontext_to_json_callback(const char *id, void *value, void
                        );
     }
 
+    rrdcontext_unlock(rc);
+
     if(options & (RRDCONTEXT_OPTION_SHOW_INSTANCES|RRDCONTEXT_OPTION_SHOW_METRICS)) {
         buffer_sprintf(wb, ",\n\t\t\t\"charts\": {");
         struct rrdcontext_to_json tt = {