plugin: Record all loaded plugins and use that for improved error messages.

diff --git a/src/core/plugin.c b/src/core/plugin.c
index 8200338a9d8fbb0804869b96f9267ed7b776e683..46976d01f7435c580e088f3aebd7836ad14ebbf4 100644 (file)
--- a/src/core/plugin.c
+++ b/src/core/plugin.c
@@ -117,6 +117,9 @@ static sdb_plugin_info_t plugin_default_info = SDB_PLUGIN_INFO_INIT;
 static pthread_key_t     plugin_ctx_key;
 static _Bool             plugin_ctx_key_initialized = 0;
 
+/* a list of the plugin contexts of all registered plugins */
+static sdb_llist_t      *all_plugins = NULL;
+
 static sdb_llist_t      *config_list = NULL;
 static sdb_llist_t      *init_list = NULL;
 static sdb_llist_t      *collector_list = NULL;
@@ -257,11 +260,11 @@ static sdb_type_t ctx_type = {
 };
 
 static ctx_t *
-ctx_create(void)
+ctx_create(const char *name)
 {
        ctx_t *ctx;
 
-       ctx = CTX(sdb_object_create("plugin-context", ctx_type));
+       ctx = CTX(sdb_object_create(name, ctx_type));
        if (! ctx)
                return NULL;
 
@@ -433,7 +436,7 @@ sdb_plugin_load(const char *name, const sdb_plugin_ctx_t *plugin_ctx)
        if (ctx_get())
                sdb_log(SDB_LOG_WARNING, "core: Discarding old plugin context");
 
-       ctx = ctx_create();
+       ctx = ctx_create(real_name);
        if (! ctx) {
                sdb_log(SDB_LOG_ERR, "core: Failed to initialize plugin context");
                return -1;
@@ -471,6 +474,18 @@ sdb_plugin_load(const char *name, const sdb_plugin_ctx_t *plugin_ctx)
                                name, SDB_VERSION_DECODE(ctx->info.version),
                                SDB_VERSION_DECODE(SDB_VERSION));
 
+       if (! all_plugins) {
+               if (! (all_plugins = sdb_llist_create())) {
+                       sdb_log(SDB_LOG_ERR, "core: Failed to load plugin '%s': "
+                                       "internal error while creating linked list", name);
+                       plugin_unregister_by_name(ctx->info.plugin_name);
+                       sdb_object_deref(SDB_OBJ(ctx));
+                       return -1;
+               }
+       }
+
+       sdb_llist_append(all_plugins, SDB_OBJ(ctx));
+
        sdb_log(SDB_LOG_INFO, "core: Successfully loaded "
                        "plugin '%s' v%i (%s)\n\t%s\n\tLicense: %s",
                        INFO_GET(&ctx->info, name), ctx->info.plugin_version,
@@ -695,8 +710,12 @@ sdb_plugin_configure(const char *name, oconfig_item_t *ci)
        plugin = SDB_PLUGIN_CB(sdb_llist_search_by_name(config_list, name));
        if (! plugin) {
                /* XXX: check if any such plugin has been loaded */
-               sdb_log(SDB_LOG_ERR, "core: Plugin '%s' did not register "
-                               "a config callback.", name);
+               ctx_t *ctx = CTX(sdb_llist_search_by_name(all_plugins, name));
+               if (! ctx)
+                       sdb_log(SDB_LOG_ERR, "core: Plugin '%s' not loaded.", name);
+               else
+                       sdb_log(SDB_LOG_ERR, "core: Plugin '%s' did not register "
+                                       "a config callback.", name);
                errno = ENOENT;
                return -1;
        }