python: Fixed crash bug in case the plugin had more than one configuration block.

diff --git a/src/python.c b/src/python.c
index d5c2d461576730cab20c7508bf87a8a185774ded..cfc07f6197d2d55a156b83d9ebac016f6ba19153 100644 (file)
--- a/src/python.c
+++ b/src/python.c
@@ -217,7 +217,7 @@ static int do_interactive = 0;
 
 static PyThreadState *state;
 
-static PyObject *cpy_format_exception;
+static PyObject *sys_path, *cpy_format_exception;
 
 static cpy_callback_t *cpy_config_callbacks;
 static cpy_callback_t *cpy_init_callbacks;
@@ -976,19 +976,10 @@ PyMODINIT_FUNC PyInit_collectd(void) {
 }
 #endif
 
-static int cpy_config(oconfig_item_t *ci) {
-       int i;
+static int cpy_init_python() {
        char *argv = "";
-       PyObject *sys, *tb;
-       PyObject *sys_path;
+       PyObject *sys;
        PyObject *module;
-       
-       /* Ok in theory we shouldn't do initialization at this point
-        * but we have to. In order to give python scripts a chance
-        * to register a config callback we need to be able to execute
-        * python code during the config callback so we have to start
-        * the interpreter here. */
-       /* Do *not* use the python "thread" module at this point! */
 
 #ifdef IS_PY3K
        /* Add a builtin module, before Py_Initialize */
@@ -1039,6 +1030,22 @@ static int cpy_config(oconfig_item_t *ci) {
        PyModule_AddIntConstant(module, "NOTIF_FAILURE", NOTIF_FAILURE);
        PyModule_AddIntConstant(module, "NOTIF_WARNING", NOTIF_WARNING);
        PyModule_AddIntConstant(module, "NOTIF_OKAY", NOTIF_OKAY);
+       return 0;
+}
+
+static int cpy_config(oconfig_item_t *ci) {
+       int i;
+       PyObject *tb;
+
+       /* Ok in theory we shouldn't do initialization at this point
+        * but we have to. In order to give python scripts a chance
+        * to register a config callback we need to be able to execute
+        * python code during the config callback so we have to start
+        * the interpreter here. */
+       /* Do *not* use the python "thread" module at this point! */
+
+       if (!Py_IsInitialized() && cpy_init_python()) return 1;
+
        for (i = 0; i < ci->children_num; ++i) {
                oconfig_item_t *item = ci->children + i;
                
@@ -1138,7 +1145,6 @@ static int cpy_config(oconfig_item_t *ci) {
                        WARNING("python plugin: Ignoring unknown config key \"%s\".", item->key);
                }
        }
-       Py_DECREF(sys_path);
        return 0;
 }