python plugin: return error on config failure

Return an error when something goes wrong during config.
We still loop through all specified modules so all errors are logged.

Fixes #926

diff --git a/src/python.c b/src/python.c
index f5b8b93..a14c06b 100644 (file)
--- a/src/python.c
+++ b/src/python.c
@@ -1104,6 +1104,7 @@ static int cpy_init_python(void) {
 
 static int cpy_config(oconfig_item_t *ci) {
        PyObject *tb;
+       int status = 0;
 
        /* Ok in theory we shouldn't do initialization at this point
         * but we have to. In order to give python scripts a chance
@@ -1144,12 +1145,15 @@ static int cpy_config(oconfig_item_t *ci) {
                        tb = PyImport_ImportModule("traceback"); /* New reference. */
                        if (tb == NULL) {
                                cpy_log_exception("python initialization");
+                               status = 1;
                                continue;
                        }
                        cpy_format_exception = PyObject_GetAttrString(tb, "format_exception"); /* New reference. */
                        Py_DECREF(tb);
-                       if (cpy_format_exception == NULL)
+                       if (cpy_format_exception == NULL) {
                                cpy_log_exception("python initialization");
+                               status = 1;
+                       }
                } else if (strcasecmp(item->key, "ModulePath") == 0) {
                        char *dir = NULL;
                        PyObject *dir_object;
@@ -1162,12 +1166,14 @@ static int cpy_config(oconfig_item_t *ci) {
                                      "a python object.", dir);
                                free(dir);
                                cpy_log_exception("python initialization");
+                               status = 1;
                                continue;
                        }
                        if (PyList_Insert(sys_path, 0, dir_object) != 0) {
                                ERROR("python plugin: Unable to prepend \"%s\" to "
                                      "python module path.", dir);
                                cpy_log_exception("python initialization");
+                               status = 1;
                        }
                        Py_DECREF(dir_object);
                        free(dir);
@@ -1181,6 +1187,7 @@ static int cpy_config(oconfig_item_t *ci) {
                        if (module == NULL) {
                                ERROR("python plugin: Error importing module \"%s\".", module_name);
                                cpy_log_exception("importing module");
+                               status = 1;
                        }
                        free(module_name);
                        Py_XDECREF(module);
@@ -1201,6 +1208,7 @@ static int cpy_config(oconfig_item_t *ci) {
                                        "a configuration callback.", name);
                                free(name);
                                continue;
+                               status = 1;
                        }
                        free(name);
                        if (c->data == NULL)
@@ -1209,15 +1217,16 @@ static int cpy_config(oconfig_item_t *ci) {
                        else
                                ret = PyObject_CallFunction(c->callback, "NO",
                                        cpy_oconfig_to_pyconfig(item, NULL), c->data); /* New reference. */
-                       if (ret == NULL)
+                       if (ret == NULL) {
                                cpy_log_exception("loading module");
-                       else
+                               status = 1;
+                       } else
                                Py_DECREF(ret);
                } else {
                        WARNING("python plugin: Ignoring unknown config key \"%s\".", item->key);
                }
        }
-       return 0;
+       return (status);
 }
 
 void module_register(void) {