lib/message: catch exceptions in _n_m_add_term

Some code movement is needed to make sure the cache is only
invalidated when the Xapian operation succeeds.

diff --git a/lib/message.cc b/lib/message.cc
index 54609fcddd680c66c7087b21089e4e22ed996cbd..c331346f3f27d25ab3c2faad943cb6c28840d43c 100644 (file)
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -1490,24 +1490,30 @@ _notmuch_message_add_term (notmuch_message_t *message,
 {
 
     char *term;
+    notmuch_private_status_t status = NOTMUCH_PRIVATE_STATUS_SUCCESS;
 
     if (value == NULL)
        return NOTMUCH_PRIVATE_STATUS_NULL_POINTER;
 
     term = talloc_asprintf (message, "%s%s",
                            _find_prefix (prefix_name), value);
+    if (strlen (term) > NOTMUCH_TERM_MAX) {
+       status = NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG;
+       goto DONE;
+    }
 
-    if (strlen (term) > NOTMUCH_TERM_MAX)
-       return NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG;
-
-    message->doc.add_term (term, 0);
-    message->modified = true;
+    try {
+       message->doc.add_term (term, 0);
+       message->modified = true;
+       _notmuch_message_invalidate_metadata (message, prefix_name);
+    } catch (Xapian::Error &error) {
+       LOG_XAPIAN_EXCEPTION (message, error);
+       status = NOTMUCH_PRIVATE_STATUS_XAPIAN_EXCEPTION;
+    }
 
+  DONE:
     talloc_free (term);
-
-    _notmuch_message_invalidate_metadata (message, prefix_name);
-
-    return NOTMUCH_PRIVATE_STATUS_SUCCESS;
+    return status;
 }
 
 /* Parse 'text' and add a term to 'message' for each parsed word. Each
@@ -1571,11 +1577,12 @@ _notmuch_message_remove_term (notmuch_message_t *message,
     try {
        message->doc.remove_term (term);
        message->modified = true;
-    } catch (const Xapian::InvalidArgumentError) {
+    } catch (const Xapian::InvalidArgumentError &error) {
        /* We'll let the philosophers try to wrestle with the
         * question of whether failing to remove that which was not
         * there in the first place is failure. For us, we'll silently
         * consider it all good. */
+       LOG_XAPIAN_EXCEPTION (message, error);
     }
 
     talloc_free (term);

diff --git a/test/T566-lib-message.sh b/test/T566-lib-message.sh
index b6a9e53673c6978f93bd9409bb8b7232c5a019eb..bc9bfcb62fad36a513a62b186e03ccdcdaeb21f4 100755 (executable)
--- a/test/T566-lib-message.sh
+++ b/test/T566-lib-message.sh
@@ -307,6 +307,23 @@ cat <<EOF > EXPECTED
 EOF
 test_expect_equal_file EXPECTED OUTPUT
 
+test_begin_subtest "_notmuch_message_add_term catches exceptions"
+cat c_head0 - c_tail <<'EOF' | test_private_C ${MAIL_DIR}
+    {
+       notmuch_private_status_t status;
+       /* This relies on Xapian throwing an exception for adding empty terms */
+       status = _notmuch_message_add_term (message, "body", "");
+       printf("%d\n%d\n", message != NULL, status != NOTMUCH_STATUS_SUCCESS );
+    }
+EOF
+cat <<EOF > EXPECTED
+== stdout ==
+1
+1
+== stderr ==
+EOF
+test_expect_equal_file EXPECTED OUTPUT
+
 test_begin_subtest "Handle removing all tags with closed db"
 cat c_head - c_tail <<'EOF' | test_C ${MAIL_DIR}
     {