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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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33
include/wsrep/provider.hpp
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@ -56,6 +56,14 @@ namespace wsrep
wsrep::transaction_id transaction_id() const
{ return transaction_id_; }
wsrep::client_id client_id() const { return client_id_; }
bool operator==(const stid& other) const
{
return (
server_id_ == other.server_id_ &&
transaction_id_ == other.transaction_id_ &&
client_id_ == other.client_id_
);
}
private:
wsrep::id server_id_;
wsrep::transaction_id transaction_id_;
@ -84,6 +92,13 @@ namespace wsrep
void* opaque() const { return opaque_; }
bool operator==(const ws_handle& other) const
{
return (
transaction_id_ == other.transaction_id_ &&
opaque_ == other.opaque_
);
}
private:
wsrep::transaction_id transaction_id_;
void* opaque_;
@ -134,9 +149,21 @@ namespace wsrep
return stid_.transaction_id();
}
bool ordered() const { return !gtid_.is_undefined(); }
wsrep::seqno depends_on() const { return depends_on_; }
int flags() const { return flags_; }
bool operator==(const ws_meta& other) const
{
return (
gtid_ == other.gtid_ &&
stid_ == other.stid_ &&
depends_on_ == other.depends_on_ &&
flags_ == other.flags_
);
}
private:
wsrep::gtid gtid_;
wsrep::stid stid_;
@ -300,7 +327,8 @@ namespace wsrep
virtual enum status commit_order_enter(const wsrep::ws_handle&,
const wsrep::ws_meta&) = 0;
virtual int commit_order_leave(const wsrep::ws_handle&,
const wsrep::ws_meta&) = 0;
const wsrep::ws_meta&,
const wsrep::mutable_buffer& err) = 0;
virtual int release(wsrep::ws_handle&) = 0;
/**
@ -325,7 +353,8 @@ namespace wsrep
/**
* Leave total order isolation critical section
*/
virtual enum status leave_toi(wsrep::client_id) = 0;
virtual enum status leave_toi(wsrep::client_id,
const wsrep::mutable_buffer& err) = 0;
/**
* Perform a causal read on cluster.