From 5ccf2327415637730d96d7520bc680301ba96e52 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Wed, 21 Apr 2010 08:41:22 +0000
Subject: Make extensive error handling in libartefact interface.

---
 server/src/queryhandlerpentominos.cc | 56 ++++++++++++++++++++++--------------
 1 file changed, 35 insertions(+), 21 deletions(-)

(limited to 'server')

diff --git a/server/src/queryhandlerpentominos.cc b/server/src/queryhandlerpentominos.cc
index a8d6c07..c5450b3 100644
--- a/server/src/queryhandlerpentominos.cc
+++ b/server/src/queryhandlerpentominos.cc
@@ -72,36 +72,50 @@ static QueryResult node2result(atf_result_node_t *node, time_t timestamp)
 
 QueryResult QueryHandlerPentominos::exec(Query &query)
 {
-  atf_transaction_t* atft = atf_new_transaction(atfc, cpr.c_str());
+  atf_transaction_t* atft = NULL;
+  atf_reply_t *reply = NULL;
+  atf_result_t *result = NULL;
+  atf_result_node_t *root = NULL;
+  atf_status_t status;
+  time_t timestamp;
+  atf_id id;
 
-  atf_id id = atf_add_query(atft, query.attributes["class"].c_str(),
-                            FILTER_LATEST, USE_NONE, 0, 0);
+  QueryResult rroot;
+  rroot.timestamp = timestamp;
+  rroot.source = "pentominos";
 
-  atf_reply_t *reply = atf_commit(atft);
+  atft = atf_new_transaction(atfc, cpr.c_str());
+  if(!atft) goto aaarg;
 
-  if(atf_get_num_results(reply, id) != 1) {
-    // ... error ...
-  } 
+  id = atf_add_query(atft, query.attributes["class"].c_str(),
+                     FILTER_LATEST, USE_NONE, 0, 0);
+  if(!atft) goto aaarg;
 
-  atf_result_t *result = atf_get_result(reply, id, 0);
+  reply = atf_commit(atft);
+  if(!reply) goto aaarg;
 
-  atf_status_t status = atf_get_result_status(result, NULL, 0);
-  if(status != ATF_STATUS_OK) { return QueryResult(); }
- 
-  time_t timestamp = atf_get_result_timestamp(result);
+  if(atf_get_num_results(reply, id) != 1) goto aaarg;
 
-  atf_result_node_t *root = atf_get_result_node(result);
+  result = atf_get_result(reply, id, 0);
+  if(!result) goto aaarg;
 
-  QueryResult rroot;
-  rroot.timestamp = timestamp;
-  rroot.source = "pentominos";
+  status = atf_get_result_status(result, NULL, 0);
+  if(status != ATF_STATUS_OK) goto aaarg;
+ 
+  timestamp = atf_get_result_timestamp(result);
 
-  QueryResult qresult = node2result(root, timestamp);
-  if(root) rroot.groups[query.attributes["class"]] = qresult;
+  root = atf_get_result_node(result);
+  if(!root) goto aaarg;
+
+  {
+    QueryResult qresult = node2result(root, timestamp);
+    rroot.groups[query.attributes["class"]] = qresult;
+  }
 
-  atf_free_result_node(root);
-  atf_free_reply(reply);
-  atf_free_transaction(atft);
+ aaarg:
+  if(root) atf_free_result_node(root);
+  if(reply) atf_free_reply(reply);
+  if(atft) atf_free_transaction(atft);
 
   return rroot;
 }
-- 
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