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Various changes

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* Added preparing state to transaction_context to better distinguish
  between 1PC and 2PC processing
* Changed client_context m_local to denote local only client mode,
  added m_replicating for replicating mode
* Initial unfinished and untested fragment certification
This commit is contained in:
Teemu Ollakka
2018-04-17 11:21:11 +03:00
parent 3b428ff0b7
commit 5c3d5ce24d
11 changed files with 319 additions and 54 deletions
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90
src/server_context.cpp Normal file
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//
// Copyright (C) 2018 Codership Oy <info@codership.com>
//
#include "server_context.hpp"
#include "client_context.hpp"
#include <wsrep_api.h>
#define START_TRANSACTION(flags_) ((flags_) & WSREP_FLAG_TRX_START)
#define COMMIT_TRANSACTION(flags_) ((flags_) & WSREP_FLAG_TRX_END)
#define ROLLBACK_TRANSACTION(flags_) ((flags_) & WSREP_FLAG_ROLLBACK)
#if 0
namespace
{
static wsrep_cb_status_t apply_cb(void* ctx,
const wsrep_ws_handle_t* wsh,
uint32_t flags,
const wsrep_buf_t* buf,
const wsrep_trx_meta_t* meta,
wsrep_bool_t* exit_loop)
{
wsrep_cb_status_t ret(WSREP_CB_SUCCESS);
trrep::client_context* client_context(
reinterpret_cast<trrep::client_context*>(ctx));
assert(client_context);
assert(client_context.mode() == trrep::client_context::m_applier);
const trrep::server_context& server_context(
client_context->server_context());
trrep::data data(buf->ptr, buf->len);
if (START_TRANSACTION(flags) && COMMIT_TRANSACTION(flags))
{
trrep::transaction_context transasction_context(
server_context.provider()
*client_context);
assert(transaction_context->active() == false);
transaction_context->start_transaction(meta->stid.trx);
if (client_context.apply(transaction_context, data))
{
ret = WSREP_CB_FAILURE;
}
else if (client_context.commit(transaction_context))
{
ret = WSREP_CB_FAILURE;
}
}
else if (START_TRANSACTION(flags))
{
// First fragment of SR transaction
trrep::client_context* sr_client_context(
server_context.client_context(node_id, client_id, trx_id));
assert(sr_client_context->transaction_context().active() == false);
}
else if (COMMIT_TRANSACTION(flags))
{
// Final fragment of SR transaction
trrep::client_context* sr_client_context(
server_context.client_context(node_id, client_id, trx_id));
assert(sr_client_context->transaction_context().active());
if (data.size() > 0)
{
sr_client_context->apply(data);
}
sr_client_context->commit();
}
else
{
// Middle fragment of SR transaction
trrep::client_context* sr_client_context(
server_context.client_context(node_id, client_id, trx_id));
assert(sr_client_context->transaction_context().active());
sr_client_context->apply(data);
}
}
return ret;
}
#endif // 0
trrep::client_context* trrep::server_context::local_client_context()
{
return new trrep::client_context(*this, ++client_id_,
trrep::client_context::m_local);
}