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codership/wsrep-lib#104 Error voting support

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- populate and pass real error description buffer to provider in case
   of applying error
 - return 0 from server_state::on_apply() if error voting confirmed
   consistency
 - remove fragments and rollback after fragment applying failure
 - always release streaming applier on commit or rollback
This commit is contained in:
Alexey Yurchenko
2019-04-30 19:00:48 +03:00
parent fd66bdef0b
commit 0f676bd893
22 changed files with 470 additions and 187 deletions
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9
include/wsrep/transaction.hpp
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@ -27,6 +27,7 @@
#include "streaming_context.hpp"
#include "lock.hpp"
#include "sr_key_set.hpp"
#include "buffer.hpp"
#include <cassert>
#include <vector>
@ -198,6 +199,12 @@ namespace wsrep
{ return streaming_context_; }
wsrep::streaming_context& streaming_context()
{ return streaming_context_; }
void adopt_apply_error(wsrep::mutable_buffer& buf)
{
apply_error_buf_ = std::move(buf);
}
const wsrep::mutable_buffer& apply_error() const
{ return apply_error_buf_; }
private:
transaction(const transaction&);
transaction operator=(const transaction&);
@ -214,6 +221,7 @@ namespace wsrep
int certify_fragment(wsrep::unique_lock<wsrep::mutex>&);
int certify_commit(wsrep::unique_lock<wsrep::mutex>&);
int append_sr_keys_for_commit();
int release_commit_order(wsrep::unique_lock<wsrep::mutex>&);
void streaming_rollback(wsrep::unique_lock<wsrep::mutex>&);
void clear_fragments();
void cleanup();
@ -240,6 +248,7 @@ namespace wsrep
size_t fragments_certified_for_statement_;
wsrep::streaming_context streaming_context_;
wsrep::sr_key_set sr_keys_;
wsrep::mutable_buffer apply_error_buf_;
};
static inline const char* to_c_string(enum wsrep::transaction::state state)