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Improve node metadata and upstream connecting mechanism

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To handle cascaded replication we're going to have to keep track
of each node's upstream node. Also enumerate the node type
("primary", "standby" or "witness") and mark if active.
This commit is contained in:
Ian Barwick
2015-01-16 10:27:44 +09:00
parent 4b6c097a3e
commit a82d37e48a
4 changed files with 117 additions and 58 deletions
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4
dbutils.h
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@@ -31,6 +31,7 @@ bool check_cluster_schema(PGconn *conn);
int is_standby(PGconn *conn);
int is_witness(PGconn *conn,char *cluster, int node_id);
bool is_pgup(PGconn *conn, int timeout);
int get_primary_node_id(PGconn *conn, char *cluster);
int get_server_version(PGconn *conn, char *server_version);
bool get_cluster_size(PGconn *conn, char *size);
bool get_pg_setting(PGconn *conn, const char *setting, char *output);
@@ -42,7 +43,8 @@ int guc_set_typed(PGconn *conn, const char *parameter, const char *op,
PGconn *get_upstream_connection(PGconn *standby_conn, char *cluster,
int *upstream_node_id,
int node_id,
int *upstream_node_id_ptr,
char *upstream_conninfo_out);
PGconn *get_master_connection(PGconn *standby_conn, char *cluster,
int *master_id, char *master_conninfo_out);