Merge branch 'julius-dev' of Software_Engineering_I/greenvironment-server into develop

src/lib/QueryHelper.ts

@@ -79,6 +79,15 @@ export class QueryHelper {
         this.pool = pgPool;
     }
 
+    /**
+     * Async init function
+     */
+    public async init() {
+        await this.pool.connect();
+        await this.createTables();
+        await this.updateTableDefinitions();
+    }
+
     /**
      * creates all tables needed if a filepath was given with the constructor
      */
@@ -86,7 +95,18 @@ export class QueryHelper {
         if (this.tableCreationFile) {
             logger.info("Creating nonexistent tables...");
             const tableSql = await fsx.readFile(this.tableCreationFile, "utf-8");
-            await this.query({text: tableSql});
+            const trans = await this.createTransaction();
+            await trans.begin();
+            try {
+                await trans.query({text: tableSql});
+                await trans.commit();
+            } catch (err) {
+                globals.logger.error(`Error on table creation ${err.message}`);
+                globals.logger.debug(err.stack);
+                await trans.rollback();
+            } finally {
+                trans.release();
+            }
         }
     }
 
@@ -97,7 +117,18 @@ export class QueryHelper {
         if (this.tableUpdateFile) {
             logger.info("Updating table definitions...");
             const tableSql = await fsx.readFile(this.tableUpdateFile, "utf-8");
-            await this.query({text: tableSql});
+            const trans = await this.createTransaction();
+            await trans.begin();
+            try {
+                await trans.query({text: tableSql});
+                await trans.commit();
+            } catch (err) {
+                globals.logger.error(`Error on table update ${err.message}`);
+                globals.logger.debug(err.stack);
+                await trans.rollback();
+            } finally {
+                trans.release();
+            }
         }
     }
 

src/lib/dataaccess/index.ts

@@ -42,8 +42,12 @@ namespace dataaccess {
      * Initializes everything that needs to be initialized asynchronous.
      */
     export async function init() {
-        await queryHelper.createTables();
-        await queryHelper.updateTableDefinitions();
+        try {
+            await queryHelper.init();
+        } catch (err) {
+            globals.logger.error(err.message);
+            globals.logger.debug(err.stack);
+        }
     }
 
     /**

src/sql/create-tables.sql

@@ -15,20 +15,6 @@ DO $$BEGIN
         END $BODY$;
     END IF;
 
-    IF NOT function_exists('cast_to_votetype') THEN
-        CREATE FUNCTION cast_to_votetype(text) RETURNS votetype LANGUAGE plpgsql AS $BODY$
-        BEGIN
-            RETURN CASE WHEN $1::votetype IS NULL THEN 'UPVOTE' ELSE $1::votetype END;
-        END $BODY$;
-    END IF;
-
-    IF NOT function_exists('cast_to_posttype') THEN
-        CREATE FUNCTION cast_to_posttype(text) RETURNS posttype LANGUAGE plpgsql AS $BODY$
-        BEGIN
-            RETURN CASE WHEN $1::posttype IS NULL THEN 'MISC' ELSE $1::posttype END;
-        END $BODY$;
-    END IF;
-
 END$$;
 
 --create types
@@ -48,7 +34,28 @@ DO $$ BEGIN
 
 END$$;
 
+-- create functions relying on types
+
+DO $$ BEGIN
+
+    IF NOT function_exists('cast_to_votetype') THEN
+        CREATE FUNCTION cast_to_votetype(text) RETURNS votetype LANGUAGE plpgsql AS $BODY$
+        BEGIN
+            RETURN CASE WHEN $1::votetype IS NULL THEN 'UPVOTE' ELSE $1::votetype END;
+        END $BODY$;
+    END IF;
+
+    IF NOT function_exists('cast_to_posttype') THEN
+        CREATE FUNCTION cast_to_posttype(text) RETURNS posttype LANGUAGE plpgsql AS $BODY$
+        BEGIN
+            RETURN CASE WHEN $1::posttype IS NULL THEN 'MISC' ELSE $1::posttype END;
+        END $BODY$;
+    END IF;
+
+END$$;
+
 -- create tables
+DO $$ BEGIN
 
     CREATE TABLE IF NOT EXISTS "user_sessions" (
         "sid" varchar NOT NULL,
@@ -126,3 +133,5 @@ CREATE TABLE IF NOT EXISTS requests (
         type requesttype DEFAULT 'FRIENDREQUEST',
         PRIMARY KEY (sender, receiver, type)
     );
+
+END $$;