int backup_phase2_client_burp2(struct asfd *asfd, struct conf *conf, int resume)
{
int ret=-1;
int sigs_end=0;
int backup_end=0;
int requests_end=0;
int blk_requests_end=0;
struct win *win=NULL; // Rabin sliding window.
struct slist *slist=NULL;
struct blist *blist=NULL;
struct iobuf *rbuf=NULL;
struct iobuf *wbuf=NULL;
logp("Phase 2 begin (send backup data)\n");
if(!(slist=slist_alloc())
|| !(blist=blist_alloc())
|| !(wbuf=iobuf_alloc())
|| blks_generate_init(conf)
|| !(win=win_alloc(&conf->rconf)))
goto end;
rbuf=asfd->rbuf;
if(!resume)
{
// Only do this bit if the server did not tell us to resume.
if(asfd->write_str(asfd, CMD_GEN, "backupphase2")
|| asfd->read_expect(asfd, CMD_GEN, "ok"))
goto end;
}
else if(conf->send_client_cntr)
{
// On resume, the server might update the client with the
// counters.
if(cntr_recv(asfd, conf))
goto end;
}
while(!backup_end)
{
if(!wbuf->len)
{
get_wbuf_from_data(conf, wbuf, slist, blist,
blk_requests_end);
if(!wbuf->len)
{
get_wbuf_from_blks(wbuf, slist,
requests_end, &sigs_end);
}
}
if(wbuf->len)
asfd->append_all_to_write_buffer(asfd, wbuf);
if(asfd->as->read_write(asfd->as))
{
logp("error in %s\n", __func__);
goto end;
}
if(rbuf->buf && deal_with_read(rbuf, slist, blist,
conf, &backup_end, &requests_end, &blk_requests_end))
goto end;
if(slist->head
// Need to limit how many blocks are allocated at once.
&& (!blist->head
|| blist->tail->index - blist->head->index<BLKS_MAX_IN_MEM)
)
{
if(add_to_blks_list(asfd, conf, slist, blist, win))
goto end;
}
if(blk_requests_end)
{
// If got to the end of the file request list
// and the last block of the last file, and
// the write buffer is empty, we got to the end.
if(slist->head==slist->tail)
{
if(!slist->tail
|| blist->last_sent==slist->tail->burp2->bend)
{
if(!wbuf->len)
break;
}
}
}
}
if(asfd->write_str(asfd, CMD_GEN, "backup_end"))
goto end;
ret=0;
end:
blk_print_alloc_stats();
//sbuf_print_alloc_stats();
win_free(win);
slist_free(&slist);
blist_free(&blist);
// Write buffer did not allocate 'buf'.
wbuf->buf=NULL;
iobuf_free(&wbuf);
cntr_print_end(conf->cntr);
cntr_print(conf->cntr, ACTION_BACKUP);
if(ret) logp("Error in backup\n");
logp("End backup\n");
return ret;
}
int backup_phase2_client_protocol2(struct asfd *asfd,
struct conf **confs, int resume)
{
int ret=-1;
uint8_t end_flags=0;
struct slist *slist=NULL;
struct iobuf *rbuf=NULL;
struct iobuf *wbuf=NULL;
struct cntr *cntr=NULL;
if(confs) cntr=get_cntr(confs);
if(!asfd || !asfd->as)
{
logp("%s() called without async structs!\n", __func__);
goto end;
}
logp("Phase 2 begin (send backup data)\n");
logfmt("\n");
if(!(slist=slist_alloc())
|| !(wbuf=iobuf_alloc())
|| blks_generate_init())
goto end;
rbuf=asfd->rbuf;
if(!resume)
{
// Only do this bit if the server did not tell us to resume.
if(asfd->write_str(asfd, CMD_GEN, "backupphase2")
|| asfd_read_expect(asfd, CMD_GEN, "ok"))
goto end;
}
else
{
// On resume, the server might update the client with cntr.
if(cntr_recv(asfd, confs))
goto end;
}
while(!(end_flags&END_BACKUP))
{
if(!wbuf->len)
{
get_wbuf_from_data(confs, wbuf, slist,
end_flags);
if(!wbuf->len)
{
if(get_wbuf_from_blks(wbuf, slist,
&end_flags)) goto end;
}
}
if(wbuf->len)
{
if(asfd->append_all_to_write_buffer(asfd, wbuf)
==APPEND_ERROR)
goto end;
}
if(asfd->as->read_write(asfd->as))
{
logp("error in %s\n", __func__);
goto end;
}
if(rbuf->buf && deal_with_read(rbuf, slist, cntr, &end_flags))
goto end;
if(slist->head
// Need to limit how many blocks are allocated at once.
&& (!slist->blist->head
|| slist->blist->tail->index
- slist->blist->head->index<BLKS_MAX_IN_MEM)
)
{
if(add_to_blks_list(asfd, confs, slist))
goto end;
}
if(end_flags&END_BLK_REQUESTS)
{
// If got to the end of the file request list
// and the last block of the last file, and
// the write buffer is empty, we got to the end.
if(slist->head==slist->tail)
{
if(!slist->tail
|| slist->blist->last_sent==
slist->tail->protocol2->bend)
{
if(!wbuf->len)
break;
}
}
}
}
if(asfd->write_str(asfd, CMD_GEN, "backup_end"))
goto end;
ret=0;
end:
slist_free(&slist);
blks_generate_free();
if(wbuf)
{
// Write buffer did not allocate 'buf'.
wbuf->buf=NULL;
iobuf_free(&wbuf);
}
cntr_print_end(cntr);
cntr_print(cntr, ACTION_BACKUP, asfd);
if(ret) logp("Error in backup\n");
logp("End backup\n");
return ret;
}
static
#endif
int do_backup_phase2_server_protocol2(struct async *as, struct asfd *chfd,
struct sdirs *sdirs, int resume, struct conf **confs)
{
int ret=-1;
uint8_t end_flags=0;
struct slist *slist=NULL;
struct iobuf wbuf;
struct dpth *dpth=NULL;
man_off_t *p1pos=NULL;
struct manios *manios=NULL;
// This is used to tell the client that a number of consecutive blocks
// have been found and can be freed.
struct asfd *asfd=NULL;
struct cntr *cntr=NULL;
struct sbuf *csb=NULL;
uint64_t file_no=1;
if(!as)
{
logp("async not provided to %s()\n", __func__);
goto end;
}
if(!sdirs)
{
logp("sdirs not provided to %s()\n", __func__);
goto end;
}
if(!confs)
{
logp("confs not provided to %s()\n", __func__);
goto end;
}
asfd=as->asfd;
if(!asfd)
{
logp("asfd not provided to %s()\n", __func__);
goto end;
}
if(!chfd)
{
logp("chfd not provided to %s()\n", __func__);
goto end;
}
cntr=get_cntr(confs);
if(get_int(confs[OPT_BREAKPOINT])>=2000
&& get_int(confs[OPT_BREAKPOINT])<3000)
{
breaking=get_int(confs[OPT_BREAKPOINT]);
breakcount=breaking-2000;
}
blks_generate_init();
logp("Phase 2 begin (recv backup data)\n");
if(!(dpth=dpth_alloc())
|| dpth_protocol2_init(dpth,
sdirs->data,
get_string(confs[OPT_CNAME]),
sdirs->cfiles,
get_int(confs[OPT_MAX_STORAGE_SUBDIRS])))
goto end;
if(resume)
{
if(!(p1pos=do_resume(sdirs, dpth, confs)))
goto end;
if(cntr_send_sdirs(asfd, sdirs, confs, CNTR_STATUS_BACKUP))
goto end;
}
if(!(manios=manios_open_phase2(sdirs, p1pos, PROTO_2))
|| !(slist=slist_alloc())
|| !(csb=sbuf_alloc(PROTO_2)))
goto end;
iobuf_free_content(asfd->rbuf);
memset(&wbuf, 0, sizeof(struct iobuf));
while(!(end_flags&END_BACKUP))
{
if(write_status(CNTR_STATUS_BACKUP,
csb && csb->path.buf?csb->path.buf:"", cntr))
goto end;
if(maybe_add_from_scan(manios, slist, chfd, &csb, cntr))
goto end;
if(!wbuf.len)
{
if(get_wbuf_from_sigs(&wbuf, slist, &end_flags))
goto end;
if(!wbuf.len)
{
get_wbuf_from_files(&wbuf, slist,
manios, &end_flags, &file_no);
}
}
if(wbuf.len
&& asfd->append_all_to_write_buffer(asfd, &wbuf)==APPEND_ERROR)
goto end;
if(append_for_champ_chooser(chfd, slist->blist, end_flags))
goto end;
if(as->read_write(as))
{
logp("error from as->read_write in %s\n", __func__);
goto end;
}
while(asfd->rbuf->buf)
{
if(deal_with_read(asfd->rbuf, slist, cntr,
&end_flags, dpth))
goto end;
// Get as much out of the readbuf as possible.
if(asfd->parse_readbuf(asfd))
goto end;
}
while(chfd->rbuf->buf)
{
if(deal_with_read_from_chfd(chfd,
slist->blist, dpth, cntr))
goto end;
// Get as much out of the readbuf as possible.
if(chfd->parse_readbuf(chfd))
goto end;
}
if(write_to_changed_file(asfd, chfd, manios,
slist, end_flags))
goto end;
}
// Hack: If there are some entries left after the last entry that
// contains block data, it will not be written to the changed file
// yet because the last entry of block data has not had
// sb->protocol2->bend set.
if(slist->head && slist->head->next)
{
struct sbuf *sb=NULL;
sb=slist->head;
slist->head=sb->next;
sbuf_free(&sb);
if(write_to_changed_file(asfd, chfd, manios,
slist, end_flags))
goto end;
}
if(manios_close(&manios))
goto end;
if(check_for_missing_work_in_slist(slist))
goto end;
// Need to release the last left. There should be one at most.
if(dpth->head && dpth->head->next)
{
logp("ERROR: More data locks remaining after: %s\n",
dpth->head->save_path);
goto end;
}
if(dpth_release_all(dpth)) goto end;
ret=0;
end:
if(ret)
{
if(slist && slist->head)
logp(" last tried file: %s\n",
iobuf_to_printable(&slist->head->path));
}
logp("End backup\n");
sbuf_free(&csb);
slist_free(&slist);
if(asfd) iobuf_free_content(asfd->rbuf);
if(chfd) iobuf_free_content(chfd->rbuf);
dpth_free(&dpth);
manios_close(&manios);
man_off_t_free(&p1pos);
blks_generate_free();
hash_delete_all();
return ret;
}
