int
mvc_init(int debug, store_type store, int ro, int su, backend_stack stk)
{
int first = 0;
logger_settings *log_settings = (struct logger_settings *) GDKmalloc(sizeof(struct logger_settings));
/* Set the default WAL directory. "sql_logs" by default */
log_settings->logdir = "sql_logs";
/* Get and pass on the WAL directory location, if set */
if (GDKgetenv("gdk_logdir") != NULL) {
log_settings->logdir = GDKgetenv("gdk_logdir");
}
/* Get and pass on the shared WAL directory location, if set */
log_settings->shared_logdir = GDKgetenv("gdk_shared_logdir");
/* Get and pass on the shared WAL drift threshold, if set.
* -1 by default, meaning it should be ignored, since it is not set */
log_settings->shared_drift_threshold = GDKgetenv_int("gdk_shared_drift_threshold", -1);
/* Get and pass on the flag how many WAL files should be preserved.
* 0 by default - keeps only the current WAL file. */
log_settings->keep_persisted_log_files = GDKgetenv_int("gdk_keep_persisted_log_files", 0);
mvc_debug = debug&4;
if (mvc_debug) {
fprintf(stderr, "#mvc_init logdir %s\n", log_settings->logdir);
fprintf(stderr, "#mvc_init keep_persisted_log_files %d\n", log_settings->keep_persisted_log_files);
if (log_settings->shared_logdir != NULL) {
fprintf(stderr, "#mvc_init shared_logdir %s\n", log_settings->shared_logdir);
}
fprintf(stderr, "#mvc_init shared_drift_threshold %d\n", log_settings->shared_drift_threshold);
}
keyword_init();
scanner_init_keywords();
if ((first = store_init(debug, store, ro, su, log_settings, stk)) < 0) {
fprintf(stderr, "!mvc_init: unable to create system tables\n");
return -1;
}
if (first || catalog_version) {
sql_schema *s;
sql_table *t;
mvc *m = mvc_create(0, stk, 0, NULL, NULL);
m->sa = sa_create();
/* disable caching */
m->caching = 0;
/* disable history */
m->history = 0;
/* disable size header */
m->sizeheader = 0;
mvc_trans(m);
s = m->session->schema = mvc_bind_schema(m, "sys");
assert(m->session->schema != NULL);
if (!first) {
t = mvc_bind_table(m, s, "tables");
mvc_drop_table(m, s, t, 0);
t = mvc_bind_table(m, s, "columns");
mvc_drop_table(m, s, t, 0);
}
t = mvc_create_view(m, s, "tables", SQL_PERSIST, "SELECT \"id\", \"name\", \"schema_id\", \"query\", CAST(CASE WHEN \"system\" THEN \"type\" + 10 /* system table/view */ ELSE (CASE WHEN \"commit_action\" = 0 THEN \"type\" /* table/view */ ELSE \"type\" + 20 /* global temp table */ END) END AS SMALLINT) AS \"type\", \"system\", \"commit_action\", \"access\", CASE WHEN (NOT \"system\" AND \"commit_action\" > 0) THEN 1 ELSE 0 END AS \"temporary\" FROM \"sys\".\"_tables\" WHERE \"type\" <> 2 UNION ALL SELECT \"id\", \"name\", \"schema_id\", \"query\", CAST(\"type\" + 30 /* local temp table */ AS SMALLINT) AS \"type\", \"system\", \"commit_action\", \"access\", 1 AS \"temporary\" FROM \"tmp\".\"_tables\";", 1);
mvc_create_column_(m, t, "id", "int", 32);
mvc_create_column_(m, t, "name", "varchar", 1024);
mvc_create_column_(m, t, "schema_id", "int", 32);
mvc_create_column_(m, t, "query", "varchar", 2048);
mvc_create_column_(m, t, "type", "smallint", 16);
mvc_create_column_(m, t, "system", "boolean", 1);
mvc_create_column_(m, t, "commit_action", "smallint", 16);
mvc_create_column_(m, t, "access", "smallint", 16);
mvc_create_column_(m, t, "temporary", "smallint", 16);
if (!first) {
int pub = ROLE_PUBLIC;
int p = PRIV_SELECT;
int zero = 0;
sql_table *privs = find_sql_table(s, "privileges");
table_funcs.table_insert(m->session->tr, privs, &t->base.id, &pub, &p, &zero, &zero);
}
t = mvc_create_view(m, s, "columns", SQL_PERSIST, "SELECT * FROM (SELECT p.* FROM \"sys\".\"_columns\" AS p UNION ALL SELECT t.* FROM \"tmp\".\"_columns\" AS t) AS columns;", 1);
mvc_create_column_(m, t, "id", "int", 32);
mvc_create_column_(m, t, "name", "varchar", 1024);
mvc_create_column_(m, t, "type", "varchar", 1024);
mvc_create_column_(m, t, "type_digits", "int", 32);
mvc_create_column_(m, t, "type_scale", "int", 32);
mvc_create_column_(m, t, "table_id", "int", 32);
mvc_create_column_(m, t, "default", "varchar", 2048);
mvc_create_column_(m, t, "null", "boolean", 1);
mvc_create_column_(m, t, "number", "int", 32);
mvc_create_column_(m, t, "storage", "varchar", 2048);
if (!first) {
int pub = ROLE_PUBLIC;
int p = PRIV_SELECT;
int zero = 0;
sql_table *privs = find_sql_table(s, "privileges");
table_funcs.table_insert(m->session->tr, privs, &t->base.id, &pub, &p, &zero, &zero);
} else {
sql_create_env(m, s);
sql_create_privileges(m, s);
}
s = m->session->schema = mvc_bind_schema(m, "tmp");
assert(m->session->schema != NULL);
if (mvc_commit(m, 0, NULL) < 0) {
fprintf(stderr, "!mvc_init: unable to commit system tables\n");
return -1;
}
mvc_destroy(m);
}
return first;
}
int
mvc_init(int debug, store_type store, backend_stack stk)
{
int first = 0;
char *logdir = "sql_logs";
mvc_debug = debug;
if (mvc_debug)
fprintf(stderr, "#mvc_init logdir %s\n", logdir);
keyword_init();
scanner_init_keywords();
if ((first = store_init(debug, store, logdir, stk)) < 0) {
fprintf(stderr, "!mvc_init: unable to create system tables\n");
return -1;
}
if (first || catalog_version) {
sql_schema *s;
sql_table *t;
mvc *m = mvc_create(0, stk, 0, NULL, NULL);
/* disable caching */
m->caching = 0;
/* disable history */
m->history = 0;
/* disable size header */
m->sizeheader = 0;
mvc_trans(m);
s = m->session->schema = mvc_bind_schema(m, "sys");
assert(m->session->schema != NULL);
if (catalog_version) {
t = mvc_bind_table(m, s, "tables");
mvc_drop_table(m, s, t, 0);
t = mvc_bind_table(m, s, "columns");
mvc_drop_table(m, s, t, 0);
}
t = mvc_create_view(m, s, "tables", SQL_PERSIST, "SELECT * FROM (SELECT p.*, 0 AS \"temporary\" FROM \"sys\".\"_tables\" AS p UNION ALL SELECT t.*, 1 AS \"temporary\" FROM \"tmp\".\"_tables\" AS t) AS tables where tables.type <> 2;", 1);
mvc_create_column_(m, t, "id", "int", 32);
mvc_create_column_(m, t, "name", "varchar", 1024);
mvc_create_column_(m, t, "schema_id", "int", 32);
mvc_create_column_(m, t, "query", "varchar", 2048);
mvc_create_column_(m, t, "type", "smallint", 16);
mvc_create_column_(m, t, "system", "boolean", 1);
mvc_create_column_(m, t, "commit_action", "smallint", 16);
mvc_create_column_(m, t, "readonly", "boolean", 1);
mvc_create_column_(m, t, "temporary", "smallint", 16);
if (catalog_version) {
int pub = ROLE_PUBLIC;
int p = PRIV_SELECT;
int zero = 0;
sql_table *privs = find_sql_table(s, "privileges");
table_funcs.table_insert(m->session->tr, privs, &t->base.id, &pub, &p, &zero, &zero);
}
t = mvc_create_view(m, s, "columns", SQL_PERSIST, "SELECT * FROM (SELECT p.* FROM \"sys\".\"_columns\" AS p UNION ALL SELECT t.* FROM \"tmp\".\"_columns\" AS t) AS columns;", 1);
mvc_create_column_(m, t, "id", "int", 32);
mvc_create_column_(m, t, "name", "varchar", 1024);
mvc_create_column_(m, t, "type", "varchar", 1024);
mvc_create_column_(m, t, "type_digits", "int", 32);
mvc_create_column_(m, t, "type_scale", "int", 32);
mvc_create_column_(m, t, "table_id", "int", 32);
mvc_create_column_(m, t, "default", "varchar", 2048);
mvc_create_column_(m, t, "null", "boolean", 1);
mvc_create_column_(m, t, "number", "int", 32);
/* TODO: the code below is out-of-date. Should be changed into the
* following with the next major catalogue change:
* mvc_create_column(m, t, "storage", "varchar", 2048);
*/
mvc_create_column_(m, t, "storage_type", "int", 32);
if (catalog_version) {
int pub = ROLE_PUBLIC;
int p = PRIV_SELECT;
int zero = 0;
sql_table *privs = find_sql_table(s, "privileges");
table_funcs.table_insert(m->session->tr, privs, &t->base.id, &pub, &p, &zero, &zero);
}
if (!catalog_version) {
sql_create_env(m, s);
sql_create_privileges(m, s);
}
s = m->session->schema = mvc_bind_schema(m, "tmp");
assert(m->session->schema != NULL);
if (mvc_commit(m, 0, NULL) < 0) {
fprintf(stderr, "!mvc_init: unable to commit system tables\n");
return -1;
}
mvc_destroy(m);
}
return first;
}