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Recover current view from state after SST.

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When member joins the group and needs to receive an SST it won't
receive the corresponding menbership view event because the SST
happens after the event and will already include the effects of
all events ordered before it. The view then must be recovered from
the received state.

Minor renames and cleanups.

References codership/wsrep-lib#18
This commit is contained in:
Alexey Yurchenko
2018-11-11 21:59:24 +02:00
parent c7e8bfbdb5
commit fb14883547
12 changed files with 198 additions and 27 deletions
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40
src/view.cpp
View File

@ -18,13 +18,45 @@
*/
#include "wsrep/view.hpp"
#include "wsrep/provider.hpp"
int wsrep::view::member_index(const wsrep::id& member_id) const
{
// first, quick guess
if (own_index_ >= 0 && members_[own_index_].id() == member_id)
{
return own_index_;
}
// guesing didn't work, scan the list
for (unsigned int i(0); i < members_.size(); ++i)
{
if (i != own_index_ && members_[i].id() == member_id) return i;
}
return -1;
}
static const char* view_status_str(enum wsrep::view::status s)
{
switch(s)
{
case wsrep::view::primary: return "PRIMARY";
case wsrep::view::non_primary: return "NON-PRIMARY";
case wsrep::view::disconnected: return "DISCONNECTED";
}
assert(0);
return "invalid status";
}
void wsrep::view::print(std::ostream& os) const
{
os << " id: " << state_id() << "\n"
<< " status: " << status() << "\n"
<< " status: " << view_status_str(status()) << "\n"
<< " prococol_version: " << protocol_version() << "\n"
<< " final: " << final() << "\n"
<< " capabilities: " << provider::capability::str(capabilities())<<"\n"
<< " final: " << (final() ? "yes" : "no") << "\n"
<< " own_index: " << own_index() << "\n"
<< " members(" << members().size() << "):\n";
@ -32,7 +64,7 @@ void wsrep::view::print(std::ostream& os) const
i != members().end(); ++i)
{
os << "\t" << (i - members().begin()) /* ordinal index */
<< ") id: " << i->id()
<< ", name: " << i->name() << "\n";
<< ": " << i->id()
<< ", " << i->name() << "\n";
}
}