/* execute the specified type of actions on the specified "multi" node (i.e.,
* multi-value leaf node) during commit. act is one of "delete_act",
* "update_act", and "syntax_act", representing the different processing
* passes.
*
* see comment for _exec_node_actions() above about clist.
*/
static bool
_exec_multi_node_actions(Cstore& cs, const CfgNode& node, vtw_act_type act,
CommittedPathListT *clist = NULL)
{
if (!node.isMulti()) {
// fail if this is called with a non-multi node
OUTPUT_USER("_exec_multi_node_actions() called with non-multi[%s]\n",
node.getCommitPath().to_string().c_str());
return false;
}
const vtw_def *def = node.getDef();
Cpath pcomps(node.getCommitPath());
if (clist) {
CommitState s = node.getCommitState();
if (s == COMMIT_STATE_ADDED || s == COMMIT_STATE_DELETED) {
/* for multi-value leaf node, add the node itself to the
* "committed list" if it is added/deleted.
*/
tr1::shared_ptr<Cpath> ppdisp(new Cpath(pcomps));
clist->push_back(CommittedPathT(s, ppdisp));
}
}
for (size_t i = 0; i < _get_num_commit_multi_values(node); i++) {
CommitState s = _get_commit_multi_state_at(node, i);
if (s == COMMIT_STATE_UNCHANGED) {
// nop for unchanged value
continue;
}
string v = _get_commit_multi_value_at(node, i);
auto_ptr<char> at_str(strdup(v.c_str()));
tr1::shared_ptr<Cpath> pdisp(new Cpath(pcomps));
pdisp->push(v);
if (clist) {
// add the value to the committed list
clist->push_back(CommittedPathT(s, pdisp));
continue;
}
if (act == syntax_act) {
// syntax pass
if (s != COMMIT_STATE_ADDED) {
continue;
}
if (!_exec_tmpl_actions(cs, s, at_str.get(), pcomps, *(pdisp.get()),
node, syntax_act, def)) {
return false;
}
} else {
//// delete or update pass
// begin
if (!_exec_tmpl_actions(cs, s, at_str.get(), pcomps, *(pdisp.get()),
node, begin_act, def)) {
return false;
}
/* note that for CHANGED value we need to do BOTH a delete AND a
* create. this is the fix for bug 5460. more information in later
* comment about bug 5460.
*/
if (act == delete_act) {
// delete pass
if (s == COMMIT_STATE_DELETED || s == COMMIT_STATE_CHANGED) {
if (!_exec_tmpl_actions(cs, s, at_str.get(), pcomps, *(pdisp.get()),
node, delete_act, def)) {
return false;
}
}
} else {
// update pass
if (s == COMMIT_STATE_ADDED || s == COMMIT_STATE_CHANGED) {
if (!_exec_tmpl_actions(cs, s, at_str.get(), pcomps, *(pdisp.get()),
node, create_act, def)) {
return false;
}
}
}
// end
if (!_exec_tmpl_actions(cs, s, at_str.get(), pcomps, *(pdisp.get()),
node, end_act, def)) {
return false;
}
}
}
return true;
}
/* execute the specified type of actions on the specified node.
*
* note that if the "committed list" clist is specified, no action will be
* performed except adding the node to the committed list (if needed).
*/
static bool
_exec_node_actions(Cstore& cs, CfgNode& node, vtw_act_type act,
CommittedPathListT *clist = NULL)
{
if (node.isMulti()) {
// fail if this is called with a multi node
OUTPUT_USER("_exec_node_actions() called with multi[%s]\n",
node.getCommitPath().to_string().c_str());
return false;
}
CommitState s = node.getCommitState();
if (s == COMMIT_STATE_DELETED && node.commitChildDeleteFailed()) {
return false;
}
bool nop = false;
if (!node.getActions(act)) {
// no actions => success
nop = true;
}
auto_ptr<char> at_str;
Cpath pcomps(node.getCommitPath());
tr1::shared_ptr<Cpath> pdisp(new Cpath(pcomps));
bool add_parent_to_committed = false;
if (node.isLeaf()) {
// single-value node
if (s == COMMIT_STATE_CHANGED) {
if (node.commitValueBefore() == node.commitValueAfter()) {
// value didn't change (only "default" status), so nop
nop = true;
}
at_str.reset(strdup(node.commitValueAfter().c_str()));
} else {
if (s == COMMIT_STATE_ADDED || s == COMMIT_STATE_DELETED) {
// add parent to "committed list" if it's added/deleted
add_parent_to_committed = true;
}
at_str.reset(strdup(node.getValue().c_str()));
}
pdisp->push(at_str.get());
} else if (node.isValue()) {
// tag value
at_str.reset(strdup(node.getValue().c_str()));
pcomps.pop(); // paths need to be at the "node" level
} else {
// typeless node
at_str.reset(strdup(node.getName().c_str()));
}
if (clist) {
/* note that even though every "tag value" will be added to the
* "committed list" here, simply adding the corresponding "tag node"
* here does not work.
*
* basically there are three scenarios for a tag node:
* (1) in both active and working
* i.e., tag node itself is unchanged => doesn't need to be added
* to committed list since "committed query" will check for this
* condition first.
* (2) only in working
* i.e., all tag values are being added so tag node itself is also
* being added. in this case, tag node must be considered
* "committed" after the first tag value has been processed
* successfully.
* (3) only in active
* i.e., all tag values are being deleted so is tag node itself.
* in this case, tag node must be considered "committed" only
* after all tag values have been processed successfully.
*
* cases (2) and (3) cannot be handled here since they depend on the
* processing order and outcome of siblings of tag values. therefore,
* tag node will never be added to the committed list, and the
* "committed query" function will need to handle tag nodes as special
* case.
*/
if (add_parent_to_committed) {
tr1::shared_ptr<Cpath> ppdisp(new Cpath(pcomps));
clist->push_back(CommittedPathT(s, ppdisp));
}
clist->push_back(CommittedPathT(s, pdisp));
return true;
}
if (nop) {
// nothing to do
return true;
}
if (!_exec_tmpl_actions(cs, s, at_str.get(), pcomps, *(pdisp.get()),
node, act, node.getDef())) {
if (act == create_act) {
_set_node_commit_create_failed(node);
}
return false;
}
return true;
}