str mnstr_open_rastreamwrap(Stream *S, str *filename)
{
stream *s;
if ((s = open_rastream(*filename)) == NULL || mnstr_errnr(s)) {
int errnr = mnstr_errnr(s);
if (s)
mnstr_destroy(s);
throw(IO, "streams.open", "could not open file '%s': %s",
*filename, strerror(errnr));
} else {
*(stream**)S = s;
}
return MAL_SUCCEED;
}
/*
* Locate a file with SQL commands and execute it. For the time being a 1MB
* file limit is implicitly imposed. If the file can not be located in the
* script library, we assume it is sufficiently self descriptive.
* (Respecting the file system context where the call is executed )
*/
str
SQLinclude(Client cntxt, MalBlkPtr mb, MalStkPtr stk, InstrPtr pci)
{
stream *fd;
bstream *bfd;
str *name = getArgReference_str(stk, pci, 1);
str msg = MAL_SUCCEED, fullname;
str *expr;
mvc *m;
size_t sz;
fullname = MSP_locate_sqlscript(*name, 0);
if (fullname == NULL)
fullname = *name;
fd = open_rastream(fullname);
if (mnstr_errnr(fd) == MNSTR_OPEN_ERROR) {
mnstr_destroy(fd);
throw(MAL, "sql.include", "could not open file: %s\n", *name);
}
sz = getFileSize(fd);
if (sz > (size_t) 1 << 29) {
mnstr_destroy(fd);
throw(MAL, "sql.include", "file %s too large to process", fullname);
}
bfd = bstream_create(fd, sz == 0 ? (size_t) (128 * BLOCK) : sz);
if (bstream_next(bfd) < 0) {
bstream_destroy(bfd);
throw(MAL, "sql.include", "could not read %s\n", *name);
}
expr = &bfd->buf;
msg = SQLstatementIntern(cntxt, expr, "sql.include", TRUE, FALSE, NULL);
bstream_destroy(bfd);
m = ((backend *) cntxt->sqlcontext)->mvc;
if (m->sa)
sa_destroy(m->sa);
m->sa = NULL;
(void) mb;
return msg;
}
str
SQLinitClient(Client c)
{
mvc *m;
str schema;
str msg = MAL_SUCCEED;
backend *be;
bstream *bfd = NULL;
stream *fd = NULL;
static int maybeupgrade = 1;
#ifdef _SQL_SCENARIO_DEBUG
mnstr_printf(GDKout, "#SQLinitClient\n");
#endif
if (SQLinitialized == 0 && (msg = SQLprelude(NULL)) != MAL_SUCCEED)
return msg;
MT_lock_set(&sql_contextLock);
/*
* Based on the initialization return value we can prepare a SQLinit
* string with all information needed to initialize the catalog
* based on the mandatory scripts to be executed.
*/
if (sqlinit) { /* add sqlinit to the fdin stack */
buffer *b = (buffer *) GDKmalloc(sizeof(buffer));
size_t len = strlen(sqlinit);
bstream *fdin;
buffer_init(b, _STRDUP(sqlinit), len);
fdin = bstream_create(buffer_rastream(b, "si"), b->len);
bstream_next(fdin);
MCpushClientInput(c, fdin, 0, "");
}
if (c->sqlcontext == 0) {
m = mvc_create(c->idx, 0, SQLdebug, c->fdin, c->fdout);
global_variables(m, "monetdb", "sys");
if (isAdministrator(c) || strcmp(c->scenario, "msql") == 0) /* console should return everything */
m->reply_size = -1;
be = (void *) backend_create(m, c);
} else {
be = c->sqlcontext;
m = be->mvc;
mvc_reset(m, c->fdin, c->fdout, SQLdebug, NR_GLOBAL_VARS);
backend_reset(be);
}
if (m->session->tr)
reset_functions(m->session->tr);
/* pass through credentials of the user if not console */
schema = monet5_user_set_def_schema(m, c->user);
if (!schema) {
_DELETE(schema);
throw(PERMD, "SQLinitClient", "08004!schema authorization error");
}
_DELETE(schema);
/*expect SQL text first */
be->language = 'S';
/* Set state, this indicates an initialized client scenario */
c->state[MAL_SCENARIO_READER] = c;
c->state[MAL_SCENARIO_PARSER] = c;
c->state[MAL_SCENARIO_OPTIMIZE] = c;
c->sqlcontext = be;
initSQLreferences();
/* initialize the database with predefined SQL functions */
if (SQLnewcatalog == 0) {
/* check whether table sys.systemfunctions exists: if
* it doesn't, this is probably a restart of the
* server after an incomplete initialization */
sql_schema *s = mvc_bind_schema(m, "sys");
sql_table *t = s ? mvc_bind_table(m, s, "systemfunctions") : NULL;
if (t == NULL)
SQLnewcatalog = 1;
}
if (SQLnewcatalog > 0) {
char path[PATHLENGTH];
str fullname;
SQLnewcatalog = 0;
maybeupgrade = 0;
snprintf(path, PATHLENGTH, "createdb");
slash_2_dir_sep(path);
fullname = MSP_locate_sqlscript(path, 1);
if (fullname) {
str filename = fullname;
str p, n;
fprintf(stdout, "# SQL catalog created, loading sql scripts once\n");
do {
p = strchr(filename, PATH_SEP);
if (p)
*p = '\0';
if ((n = strrchr(filename, DIR_SEP)) == NULL) {
n = filename;
} else {
n++;
}
fprintf(stdout, "# loading sql script: %s\n", n);
fd = open_rastream(filename);
if (p)
filename = p + 1;
if (fd) {
size_t sz;
sz = getFileSize(fd);
if (sz > (size_t) 1 << 29) {
mnstr_destroy(fd);
msg = createException(MAL, "createdb", "file %s too large to process", filename);
} else {
bfd = bstream_create(fd, sz == 0 ? (size_t) (128 * BLOCK) : sz);
if (bfd && bstream_next(bfd) >= 0)
msg = SQLstatementIntern(c, &bfd->buf, "sql.init", TRUE, FALSE, NULL);
bstream_destroy(bfd);
}
if (m->sa)
sa_destroy(m->sa);
m->sa = NULL;
if (msg)
p = NULL;
}
} while (p);
GDKfree(fullname);
} else
fprintf(stderr, "!could not read createdb.sql\n");
} else { /* handle upgrades */
if (!m->sa)
m->sa = sa_create();
if (maybeupgrade)
SQLupgrades(c,m);
maybeupgrade = 0;
}
MT_lock_unset(&sql_contextLock);
fflush(stdout);
fflush(stderr);
/* send error from create scripts back to the first client */
if (msg) {
error(c->fdout, msg);
handle_error(m, c->fdout, 0);
sqlcleanup(m, mvc_status(m));
}
return msg;
}
