Migrate db connection code to new system

qa-include/qa-ajax.php

@@ -78,11 +78,11 @@ $routing = array(
 $operation = qa_post_text('qa_operation');
 
 if (isset($routing[$operation])) {
-	qa_db_connect('qa_ajax_db_fail_handler');
+	$qa_db->connect('qa_ajax_db_fail_handler');
 	qa_initialize_postdb_plugins();
 
 	qa_initialize_buffering();
 	require QA_INCLUDE_DIR . 'ajax/' . $routing[$operation];
 
-	qa_db_disconnect();
+	$qa_db->disconnect();
 }

qa-include/qa-base.php

@@ -69,12 +69,13 @@ qa_register_core_modules();
 
 qa_initialize_predb_plugins();
 require_once QA_INCLUDE_DIR . 'qa-db.php';
-qa_db_allow_connect();
+$qa_db = qa_service('database');
+$qa_db->allowConnect();
 
 // $qa_autoconnect defaults to true so that optional plugins will load for external code. Q2A core
 // code sets $qa_autoconnect to false so that we can use custom fail handlers.
 if (!isset($qa_autoconnect) || $qa_autoconnect !== false) {
-	qa_db_connect('qa_page_db_fail_handler');
+	$qa_db->connect('qa_page_db_fail_handler');
 	qa_initialize_postdb_plugins();
 }
 

qa-include/qa-blob.php

@@ -43,7 +43,7 @@ qa_report_process_stage('init_blob');
 
 require_once QA_INCLUDE_DIR . 'app/blobs.php';
 
-qa_db_connect('qa_blob_db_fail_handler');
+$qa_db->connect('qa_blob_db_fail_handler');
 qa_initialize_postdb_plugins();
 
 $blob = qa_read_blob(qa_get('qa_blobid'));
@@ -92,4 +92,4 @@ if (isset($blob) && isset($blob['content'])) {
 	header('HTTP/1.0 404 Not Found');
 }
 
-qa_db_disconnect();
+$qa_db->disconnect();

qa-include/qa-feed.php

@@ -102,7 +102,7 @@ function qa_feed_load_ifcategory($categoryslugs, $allkey, $catkey, &$title,
 
 // Connect to database and get the type of feed and category requested (in some cases these are overridden later)
 
-qa_db_connect('qa_feed_db_fail_handler');
+$qa_db->connect('qa_feed_db_fail_handler');
 qa_initialize_postdb_plugins();
 
 $requestlower = strtolower(qa_request());
@@ -422,7 +422,7 @@ $lines[] = '</rss>';
 
 // Disconnect here, once all output is ready to go
 
-qa_db_disconnect();
+$qa_db->disconnect();
 
 
 // Output the XML - and we're done!

qa-include/qa-image.php

@@ -43,7 +43,7 @@ qa_report_process_stage('init_image');
 
 require_once QA_INCLUDE_DIR . 'db/cache.php';
 
-qa_db_connect('qa_image_db_fail_handler');
+$qa_db->connect('qa_image_db_fail_handler');
 qa_initialize_postdb_plugins();
 
 $blobid = qa_get('qa_blobid');
@@ -89,4 +89,4 @@ if (isset($content)) {
 	}
 }
 
-qa_db_disconnect();
+$qa_db->disconnect();

qa-include/qa-page.php

@@ -32,7 +32,7 @@ require_once QA_INCLUDE_DIR . 'app/page.php';
 global $qa_usage;
 
 qa_report_process_stage('init_page');
-qa_db_connect('qa_page_db_fail_handler');
+$qa_db->connect('qa_page_db_fail_handler');
 qa_initialize_postdb_plugins();
 
 qa_page_queue_pending();
@@ -62,4 +62,4 @@ if (is_array($qa_content)) {
 		$qa_usage->output();
 }
 
-qa_db_disconnect();
+$qa_db->disconnect();