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Duplicate connections to the Backend class

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Creating duplicate connections using the Backend class allows the
connections and their handling to be tested at the same time that the old
system is in place. This should make it somewhat easier to grasp what
changes and where when the new implementation is taken into use.
This commit is contained in:
Markus Mäkelä
2017-06-15 12:16:17 +03:00
parent 1fcb62895e
commit 05fef4b23e
5 changed files with 100 additions and 8 deletions
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4
server/modules/routing/readwritesplit/rwsplit_route_stmt.cc
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@ -190,6 +190,7 @@ bool route_single_stmt(ROUTER_INSTANCE *inst, ROUTER_CLIENT_SES *rses,
{
/** Reset the forced node as we're in relaxed multi-statement mode */
rses->forced_node = NULL;
rses->target_node.reset();
}
}
@ -958,6 +959,7 @@ handle_multi_temp_and_load(ROUTER_CLIENT_SES *rses, GWBUF *querybuf,
if (rses->rses_master_ref)
{
rses->forced_node = rses->rses_master_ref;
rses->target_node = rses->current_master;
MXS_INFO("Multi-statement query, routing all future queries to master.");
}
else
@ -1289,6 +1291,7 @@ handle_got_target(ROUTER_INSTANCE *inst, ROUTER_CLIENT_SES *rses,
session_trx_is_read_only(rses->client_dcb->session))
{
rses->forced_node = bref;
rses->target_node = get_backend_from_bref(rses, bref);
MXS_DEBUG("Setting forced_node SLAVE to %s within an opened READ ONLY transaction\n",
target_dcb->server->unique_name);
}
@ -1356,6 +1359,7 @@ handle_got_target(ROUTER_INSTANCE *inst, ROUTER_CLIENT_SES *rses,
{
MXS_DEBUG("An opened READ ONLY transaction ends: forced_node is set to NULL");
rses->forced_node = NULL;
rses->target_node.reset();
}
return true;
}