apr_dbm error

[Marco Spinetti <m....@pisa.iol.it>]

Hi all,
as Nick suggested me I tried to use apr_dbm for my purpose.
My target is to use apr_dbm to record some information and then get it 
for serving to my clients.
I'm using two apr_dbm_t which I'm opening as

apr_dbm_open_ex(&db_timeout, dbtype, DBM_FILE_TIMEOUT, APR_DBM_RWCREATE, 
APR_OS_DEFAULT, context);
apr_dbm_open_ex(&db, dbtype, DBM_FILE, APR_DBM_RWCREATE, APR_OS_DEFAULT, 
context);

In the first I'd like to record couples (url, timeout).
In the second, (url, XML).

When a client send me an url, I'd like to get, if exists, its XML, if it 
doesn't fall in timeout.
But when I try to write my xml:

...............

rv = apr_dbm_store(db, key, val);
 if (rv != APR_SUCCESS) {
        apr_size_t length;
        char errbuf[200];      
        apr_strerror(rv, errbuf, sizeof(errbuf));
        fprintf(stderr,"[ERRORE] Errore %d - %s\n", rv, errbuf);
         if (db) {
                apr_dbm_geterror(db, &rv, errbuf, sizeof(errbuf));
                fprintf(stderr, "[ERRORE] APR_DB Error %d - %s\n", rv, 
errbuf);
         }
         if (apr_dbm_exists(db_timeout, key))
             apr_dbm_delete(db_timeout, key);
        goto FINE;
 }

I get this error:

[ERRORE] Errore 20014 - Internal error
[ERRORE] APR_DB Error 22 - I/O error occurred.

What does it mean?
Can I write a XML as content?

My content (key, val) is written using a subpool which is destroyed at 
the end.

Thanks for the support

--Marco

Re: apr_dbm error

[Marco Spinetti <m....@pisa.iol.it>]

Can someone tell me something please?
I have seen inside the source code and I find these lines in sdbm_private.h:

#if 0
/* if the block/page size is increased, it breaks perl apr_sdbm_t 
compatibility */
#define DBLKSIZ 16384
#define PBLKSIZ 8192
#define PAIRMAX 8008            /* arbitrary on PBLKSIZ-N */
#else
#define DBLKSIZ 4096
#define PBLKSIZ 1024
#define PAIRMAX 1008            /* arbitrary on PBLKSIZ-N */
#endif

Meanwhile in apr_sdbm_store there is:

 need = key.dsize + val.dsize;
    /*
     * is the pair too big (or too small) for this database ??
     */
    if (need < 0 || need > PAIRMAX)
        return APR_EINVAL;

The len of my key + xml is > 1008 bytes!
I open my dbm files with the default type: what is the default for the 
default DBM type?
My system have in apr_apu.h:
#define APU_HAVE_SDBM   1
#define APU_HAVE_GDBM   1
#define APU_HAVE_NDBM   0
#define APU_HAVE_DB     1

Thanks

--Marco



Marco Spinetti wrote:

> Hi all,
> as Nick suggested me I tried to use apr_dbm for my purpose.
> My target is to use apr_dbm to record some information and then get it 
> for serving to my clients.
> I'm using two apr_dbm_t which I'm opening as
>
> apr_dbm_open_ex(&db_timeout, dbtype, DBM_FILE_TIMEOUT, 
> APR_DBM_RWCREATE, APR_OS_DEFAULT, context);
> apr_dbm_open_ex(&db, dbtype, DBM_FILE, APR_DBM_RWCREATE, 
> APR_OS_DEFAULT, context);
>
> In the first I'd like to record couples (url, timeout).
> In the second, (url, XML).
>
> When a client send me an url, I'd like to get, if exists, its XML, if 
> it doesn't fall in timeout.
> But when I try to write my xml:
>
> ...............
>
> rv = apr_dbm_store(db, key, val);
> if (rv != APR_SUCCESS) {
>        apr_size_t length;
>        char errbuf[200];             apr_strerror(rv, errbuf, 
> sizeof(errbuf));
>        fprintf(stderr,"[ERRORE] Errore %d - %s\n", rv, errbuf);
>         if (db) {
>                apr_dbm_geterror(db, &rv, errbuf, sizeof(errbuf));
>                fprintf(stderr, "[ERRORE] APR_DB Error %d - %s\n", rv, 
> errbuf);
>         }
>         if (apr_dbm_exists(db_timeout, key))
>             apr_dbm_delete(db_timeout, key);
>        goto FINE;
> }
>
> I get this error:
>
> [ERRORE] Errore 20014 - Internal error
> [ERRORE] APR_DB Error 22 - I/O error occurred.
>
> What does it mean?
> Can I write a XML as content?
>
> My content (key, val) is written using a subpool which is destroyed at 
> the end.
>
> Thanks for the support
>
> --Marco
>
>
>