Catalli's threaded switch

[sliver-openvswitch.git] / ovsdb / ovsdb.c

diff --git a/ovsdb/ovsdb.c b/ovsdb/ovsdb.c
index e95d23c..4568376 100644 (file)
--- a/ovsdb/ovsdb.c
+++ b/ovsdb/ovsdb.c
@@ -17,35 +17,55 @@
 
 #include "ovsdb.h"
 
+#include "column.h"
 #include "json.h"
 #include "ovsdb-error.h"
 #include "ovsdb-parser.h"
+#include "ovsdb-types.h"
 #include "table.h"
 #include "transaction.h"
 
 struct ovsdb_schema *
-ovsdb_schema_create(const char *name, const char *comment)
+ovsdb_schema_create(const char *name)
 {
     struct ovsdb_schema *schema;
 
     schema = xzalloc(sizeof *schema);
     schema->name = xstrdup(name);
-    schema->comment = comment ? xstrdup(comment) : NULL;
     shash_init(&schema->tables);
 
     return schema;
 }
 
+struct ovsdb_schema *
+ovsdb_schema_clone(const struct ovsdb_schema *old)
+{
+    struct ovsdb_schema *new;
+    struct shash_node *node;
+
+    new = ovsdb_schema_create(old->name);
+    SHASH_FOR_EACH (node, &old->tables) {
+        const struct ovsdb_table_schema *ts = node->data;
+
+        shash_add(&new->tables, node->name, ovsdb_table_schema_clone(ts));
+    }
+    return new;
+}
+
+
 void
 ovsdb_schema_destroy(struct ovsdb_schema *schema)
 {
     struct shash_node *node;
 
+    if (!schema) {
+        return;
+    }
+
     SHASH_FOR_EACH (node, &schema->tables) {
         ovsdb_table_schema_destroy(node->data);
     }
     shash_destroy(&schema->tables);
-    free(schema->comment);
     free(schema->name);
     free(schema);
 }
@@ -79,11 +99,28 @@ ovsdb_schema_from_file(const char *file_name, struct ovsdb_schema **schemap)
     return NULL;
 }
 
+static struct ovsdb_error * WARN_UNUSED_RESULT
+ovsdb_schema_check_ref_table(const struct ovsdb_column *column,
+                             const struct shash *tables,
+                             const struct ovsdb_base_type *base,
+                             const char *base_name)
+{
+    if (base->type == OVSDB_TYPE_UUID && base->u.uuid.refTableName
+        && !shash_find(tables, base->u.uuid.refTableName)) {
+        return ovsdb_syntax_error(NULL, NULL,
+                                  "column %s %s refers to undefined table %s",
+                                  column->name, base_name,
+                                  base->u.uuid.refTableName);
+    } else {
+        return NULL;
+    }
+}
+
 struct ovsdb_error *
 ovsdb_schema_from_json(struct json *json, struct ovsdb_schema **schemap)
 {
     struct ovsdb_schema *schema;
-    const struct json *name, *comment, *tables;
+    const struct json *name, *tables;
     struct ovsdb_error *error;
     struct shash_node *node;
     struct ovsdb_parser parser;
@@ -92,15 +129,13 @@ ovsdb_schema_from_json(struct json *json, struct ovsdb_schema **schemap)
 
     ovsdb_parser_init(&parser, json, "database schema");
     name = ovsdb_parser_member(&parser, "name", OP_ID);
-    comment = ovsdb_parser_member(&parser, "comment", OP_STRING | OP_OPTIONAL);
     tables = ovsdb_parser_member(&parser, "tables", OP_OBJECT);
     error = ovsdb_parser_finish(&parser);
     if (error) {
         return error;
     }
 
-    schema = ovsdb_schema_create(json_string(name),
-                                 comment ? json_string(comment) : NULL);
+    schema = ovsdb_schema_create(json_string(name));
     SHASH_FOR_EACH (node, json_object(tables)) {
         struct ovsdb_table_schema *table;
 
@@ -120,6 +155,29 @@ ovsdb_schema_from_json(struct json *json, struct ovsdb_schema **schemap)
 
         shash_add(&schema->tables, table->name, table);
     }
+
+    /* Validate that all refTables refer to the names of tables that exist. */
+    SHASH_FOR_EACH (node, &schema->tables) {
+        struct ovsdb_table_schema *table = node->data;
+        struct shash_node *node2;
+
+        SHASH_FOR_EACH (node2, &table->columns) {
+            struct ovsdb_column *column = node2->data;
+
+            error = ovsdb_schema_check_ref_table(column, &schema->tables,
+                                                 &column->type.key, "key");
+            if (!error) {
+                error = ovsdb_schema_check_ref_table(column, &schema->tables,
+                                                     &column->type.value,
+                                                     "value");
+            }
+            if (error) {
+                ovsdb_schema_destroy(schema);
+                return error;
+            }
+        }
+    }
+
     *schemap = schema;
     return 0;
 }
@@ -132,9 +190,6 @@ ovsdb_schema_to_json(const struct ovsdb_schema *schema)
 
     json = json_object_create();
     json_object_put_string(json, "name", schema->name);
-    if (schema->comment) {
-        json_object_put_string(json, "comment", schema->comment);
-    }
 
     tables = json_object_create();
 
@@ -148,6 +203,18 @@ ovsdb_schema_to_json(const struct ovsdb_schema *schema)
     return json;
 }
 \f
+static void
+ovsdb_set_ref_table(const struct shash *tables,
+                    struct ovsdb_base_type *base)
+{
+    if (base->type == OVSDB_TYPE_UUID && base->u.uuid.refTableName) {
+        struct ovsdb_table *table;
+
+        table = shash_find_data(tables, base->u.uuid.refTableName);
+        base->u.uuid.refTable = table;
+    }
+}
+
 struct ovsdb *
 ovsdb_create(struct ovsdb_schema *schema)
 {
@@ -166,6 +233,19 @@ ovsdb_create(struct ovsdb_schema *schema)
         shash_add(&db->tables, node->name, ovsdb_table_create(ts));
     }
 
+    /* Set all the refTables. */
+    SHASH_FOR_EACH (node, &schema->tables) {
+        struct ovsdb_table_schema *table = node->data;
+        struct shash_node *node2;
+
+        SHASH_FOR_EACH (node2, &table->columns) {
+            struct ovsdb_column *column = node2->data;
+
+            ovsdb_set_ref_table(&db->tables, &column->type.key);
+            ovsdb_set_ref_table(&db->tables, &column->type.value);
+        }
+    }
+
     return db;
 }
 
@@ -220,7 +300,7 @@ ovsdb_add_replica(struct ovsdb *db, struct ovsdb_replica *r)
 }
 
 void
-ovsdb_remove_replica(struct ovsdb *db UNUSED, struct ovsdb_replica *r)
+ovsdb_remove_replica(struct ovsdb *db OVS_UNUSED, struct ovsdb_replica *r)
 {
     list_remove(&r->node);
     (r->class->destroy)(r);