void
xdr_write_replica(as_remote_record *rr, bool is_delete, uint32_t set_id)
{
uint16_t generation = (uint16_t)rr->generation;
xdr_op_type op_type = XDR_OP_TYPE_WRITE;
// Note - in this code path, only durable deletes get here.
if (is_delete) {
generation = 0;
op_type = XDR_OP_TYPE_DURABLE_DELETE;
}
// Don't send an XDR delete if it's disallowed.
if (is_delete && ! is_xdr_delete_shipping_enabled()) {
// TODO - should we also not ship if there was no record here before?
return;
}
xdr_write(rr->rsv->ns, rr->keyd, generation, rr->src, op_type, set_id,
NULL);
}
int
delete_replica(as_partition_reservation* rsv, cf_digest* keyd, bool is_subrec,
bool is_nsup_delete, bool is_xdr_op, cf_node master)
{
// Shortcut pointers & flags.
as_namespace* ns = rsv->ns;
as_index_tree* tree = is_subrec ? rsv->sub_tree : rsv->tree;
as_index_ref r_ref;
r_ref.skip_lock = false;
if (as_record_get(tree, keyd, &r_ref, ns) != 0) {
return AS_PROTO_RESULT_FAIL_NOTFOUND;
}
as_record* r = r_ref.r;
if (ns->storage_data_in_memory) {
as_storage_rd rd;
as_storage_record_open(ns, r, &rd, keyd);
delete_adjust_sindex(&rd);
as_storage_record_close(r, &rd);
}
// Save the set-ID and generation for XDR.
uint16_t set_id = as_index_get_set_id(r);
uint16_t generation = r->generation;
as_index_delete(tree, keyd);
as_record_done(&r_ref, ns);
if (xdr_must_ship_delete(ns, is_nsup_delete, is_xdr_op)) {
xdr_write(ns, *keyd, generation, master, true, set_id, NULL);
}
return AS_PROTO_RESULT_OK;
}
/* Internal Function: Does the post processing for the UDF record after the
* UDF execution. Does the following:
* 1. Record is closed
* 2. urecord_op is updated to delete in case there is no bin left in it.
* 3. record->pickled_buf is populated before the record is close in case
* it was write operation
* 4. UDF updates cache is cleared
*
* Returns: Nothing
*
* Parameters: urecord - UDF record to operate on
* urecord_op (out) - Populated with the optype
*/
void
udf_rw_post_processing(udf_record *urecord, udf_optype *urecord_op, uint16_t set_id)
{
as_storage_rd *rd = urecord->rd;
as_transaction *tr = urecord->tr;
as_index_ref *r_ref = urecord->r_ref;
// INIT
urecord->pickled_buf = NULL;
urecord->pickled_sz = 0;
urecord->pickled_void_time = 0;
as_rec_props_clear(&urecord->pickled_rec_props);
bool udf_xdr_ship_op = false;
// TODO: optimize not to allocate buffer if it is single
// node cluster. No remote to send data to
// Check if UDF has updates.
if (urecord->flag & UDF_RECORD_FLAG_HAS_UPDATES) {
// Check if the record is not deleted after an update
if ( urecord->flag & UDF_RECORD_FLAG_OPEN) {
*urecord_op = UDF_OPTYPE_WRITE;
udf_xdr_ship_op = true;
}
else {
// If the record has updates and it is not open,
// and if it pre-existed it's an update followed by a delete.
if ( urecord->flag & UDF_RECORD_FLAG_PREEXISTS) {
*urecord_op = UDF_OPTYPE_DELETE;
udf_xdr_ship_op = true;
}
// If the record did not pre-exist and is updated
// and it is not open, then it is create followed by
// delete essentially no_op.
else {
*urecord_op = UDF_OPTYPE_NONE;
}
}
} else if ((urecord->flag & UDF_RECORD_FLAG_PREEXISTS)
&& !(urecord->flag & UDF_RECORD_FLAG_OPEN)) {
*urecord_op = UDF_OPTYPE_DELETE;
udf_xdr_ship_op = true;
} else {
*urecord_op = UDF_OPTYPE_READ;
}
cf_detail(AS_UDF, "FINISH working with LDT Record %p %p %p %p %d", &urecord,
urecord->tr, urecord->r_ref, urecord->rd,
(urecord->flag & UDF_RECORD_FLAG_STORAGE_OPEN));
// If there exists a record reference but no bin of the record is in use,
// delete the record. remove from the tree. Only LDT_RECORD here not needed
// for LDT_SUBRECORD (only do it if requested by UDF). All the SUBRECORD of
// removed LDT_RECORD will be lazily cleaned up by defrag.
if (!(urecord->flag & UDF_RECORD_FLAG_IS_SUBRECORD)
&& urecord->flag & UDF_RECORD_FLAG_OPEN
&& !as_bin_inuse_has(rd)) {
as_index_delete(tr->rsv.tree, &tr->keyd);
urecord->starting_memory_bytes = 0;
*urecord_op = UDF_OPTYPE_DELETE;
udf_xdr_ship_op = true;
} else if (*urecord_op == UDF_OPTYPE_WRITE) {
cf_detail(AS_UDF, "Committing Changes %"PRIx64" n_bins %d", rd->keyd, as_bin_get_n_bins(r_ref->r, rd));
size_t rec_props_data_size = as_storage_record_rec_props_size(rd);
uint8_t rec_props_data[rec_props_data_size];
if (rec_props_data_size > 0) {
as_storage_record_set_rec_props(rd, rec_props_data);
}
write_local_post_processing(tr, tr->rsv.ns, NULL, &urecord->pickled_buf,
&urecord->pickled_sz, &urecord->pickled_void_time,
&urecord->pickled_rec_props, true/*increment_generation*/,
NULL, r_ref->r, rd, urecord->starting_memory_bytes);
// Now ok to accommodate a new stored key...
if (! as_index_is_flag_set(r_ref->r, AS_INDEX_FLAG_KEY_STORED) && rd->key) {
if (rd->ns->storage_data_in_memory) {
as_record_allocate_key(r_ref->r, rd->key, rd->key_size);
}
as_index_set_flags(r_ref->r, AS_INDEX_FLAG_KEY_STORED);
}
// ... or drop a stored key.
else if (as_index_is_flag_set(r_ref->r, AS_INDEX_FLAG_KEY_STORED) && ! rd->key) {
if (rd->ns->storage_data_in_memory) {
as_record_remove_key(r_ref->r);
}
as_index_clear_flags(r_ref->r, AS_INDEX_FLAG_KEY_STORED);
}
}
// Collect the record information (for XDR) before closing the record
as_generation generation = 0;
if (urecord->flag & UDF_RECORD_FLAG_OPEN) {
generation = r_ref->r->generation;
set_id = as_index_get_set_id(r_ref->r);
}
// Close the record for all the cases
udf_record_close(urecord, false);
// Write to XDR pipe after closing the record, in order to release the record lock as
// early as possible.
if (udf_xdr_ship_op == true) {
if (UDF_OP_IS_WRITE(*urecord_op)) {
cf_detail(AS_UDF, "UDF write shipping for key %" PRIx64, tr->keyd);
xdr_write(tr->rsv.ns, tr->keyd, generation, 0, false, set_id);
} else if (UDF_OP_IS_DELETE(*urecord_op)) {
cf_detail(AS_UDF, "UDF delete shipping for key %" PRIx64, tr->keyd);
xdr_write(tr->rsv.ns, tr->keyd, generation, 0, true, set_id);
}
}
// Replication happens when the main record replicates
if (urecord->particle_data) {
cf_free(urecord->particle_data);
urecord->particle_data = 0;
}
udf_record_cache_free(urecord);
}
int
write_replica(as_partition_reservation* rsv, cf_digest* keyd,
uint8_t* pickled_buf, size_t pickled_sz,
const as_rec_props* p_rec_props, as_generation generation,
uint32_t void_time, uint64_t last_update_time, cf_node master,
uint32_t info, ldt_prole_info* linfo)
{
as_namespace* ns = rsv->ns;
if (! as_storage_has_space(rsv->ns)) {
cf_warning(AS_RW, "{%s} write_replica: drives full", ns->name);
return AS_PROTO_RESULT_FAIL_PARTITION_OUT_OF_SPACE;
}
as_index_tree* tree = rsv->tree;
bool is_subrec = false;
bool is_ldt_parent = false;
if (ns->ldt_enabled) {
if ((info & RW_INFO_LDT_SUBREC) != 0 || (info & RW_INFO_LDT_ESR) != 0) {
tree = rsv->sub_tree;
is_subrec = true;
}
else if ((info & RW_INFO_LDT_PARENTREC) != 0) {
is_ldt_parent = true;
}
}
as_index_ref r_ref;
r_ref.skip_lock = false;
int rv = as_record_get_create(tree, keyd, &r_ref, ns, is_subrec);
if (rv < 0) {
cf_warning_digest(AS_RW, keyd, "{%s} write_replica: fail as_record_get_create() ", ns->name);
return AS_PROTO_RESULT_FAIL_UNKNOWN;
}
as_record* r = r_ref.r;
as_storage_rd rd;
bool is_create = false;
if (rv == 1) {
as_storage_record_create(ns, r, &rd, keyd);
is_create = true;
}
else {
as_storage_record_open(ns, r, &rd, keyd);
}
bool has_sindex = (info & RW_INFO_SINDEX_TOUCHED) != 0;
rd.ignore_record_on_device = ! has_sindex && ! is_ldt_parent;
rd.n_bins = as_bin_get_n_bins(r, &rd);
// TODO - we really need an inline utility for this!
uint16_t newbins = ntohs(*(uint16_t*)pickled_buf);
if (! rd.ns->storage_data_in_memory && ! rd.ns->single_bin &&
newbins > rd.n_bins) {
rd.n_bins = newbins;
}
as_bin stack_bins[rd.ns->storage_data_in_memory ? 0 : rd.n_bins];
rd.bins = as_bin_get_all(r, &rd, stack_bins);
uint32_t stack_particles_sz = rd.ns->storage_data_in_memory ?
0 : as_record_buf_get_stack_particles_sz(pickled_buf);
uint8_t stack_particles[stack_particles_sz + 256];
uint8_t* p_stack_particles = stack_particles;
// + 256 for LDT control bin, to hold version.
if (! ldt_get_prole_version(rsv, keyd, linfo, info, &rd, is_create)) {
if (is_create) {
as_index_delete(tree, keyd);
}
as_storage_record_close(r, &rd);
as_record_done(&r_ref, ns);
return AS_PROTO_RESULT_FAIL_UNKNOWN;
}
uint64_t memory_bytes = 0;
if (! is_create) {
memory_bytes = as_storage_record_get_n_bytes_memory(&rd);
}
as_record_set_properties(&rd, p_rec_props);
if (as_record_unpickle_replace(r, &rd, pickled_buf, pickled_sz,
&p_stack_particles, has_sindex) != 0) {
if (is_create) {
as_index_delete(tree, keyd);
}
as_storage_record_close(r, &rd);
as_record_done(&r_ref, ns);
return AS_PROTO_RESULT_FAIL_UNKNOWN; // TODO - better granularity?
}
r->generation = generation;
r->void_time = void_time;
r->last_update_time = last_update_time;
as_storage_record_adjust_mem_stats(&rd, memory_bytes);
uint64_t version_to_set = 0;
bool set_version = false;
if (is_ldt_parent) {
if (linfo->replication_partition_version_match &&
linfo->ldt_prole_version_set) {
version_to_set = linfo->ldt_prole_version;
set_version = true;
}
else if (! linfo->replication_partition_version_match) {
version_to_set = linfo->ldt_source_version;
set_version = true;
}
}
if (set_version) {
int ldt_rv = as_ldt_parent_storage_set_version(&rd, version_to_set,
p_stack_particles, __FILE__, __LINE__);
if (ldt_rv < 0) {
cf_warning(AS_LDT, "write_replica: LDT parent storage version set failed %d", ldt_rv);
// TODO - roll back.
}
}
bool is_delete = false;
if (! as_bin_inuse_has(&rd)) {
// A master write that deletes a record by deleting (all) bins sends a
// binless pickle that ends up here.
is_delete = true;
as_index_delete(tree, keyd);
}
as_storage_record_write(r, &rd);
as_storage_record_close(r, &rd);
uint16_t set_id = as_index_get_set_id(r);
as_record_done(&r_ref, ns);
// Don't send an XDR delete if it's disallowed.
if (is_delete && ! is_xdr_delete_shipping_enabled()) {
// TODO - should we also not ship if there was no record here before?
return AS_PROTO_RESULT_OK;
}
// Do XDR write if the write is a non-XDR write or forwarding is enabled.
if ((info & RW_INFO_XDR) == 0 ||
is_xdr_forwarding_enabled() || ns->ns_forward_xdr_writes) {
xdr_write(ns, *keyd, generation, master, is_delete, set_id, NULL);
}
return AS_PROTO_RESULT_OK;
}
/* Internal Function: Does the post processing for the UDF record after the
* UDF execution. Does the following:
* 1. Record is closed
* 2. urecord_op is updated to delete in case there is no bin left in it.
* 3. record->pickled_buf is populated before the record is close in case
* it was write operation
* 4. UDF updates cache is cleared
*
* Returns: Nothing
*
* Parameters: urecord - UDF record to operate on
* urecord_op (out) - Populated with the optype
*/
static void
post_processing(udf_record *urecord, udf_optype *urecord_op, uint16_t set_id)
{
as_storage_rd *rd = urecord->rd;
as_transaction *tr = urecord->tr;
as_index_ref *r_ref = urecord->r_ref;
// INIT
urecord->pickled_buf = NULL;
urecord->pickled_sz = 0;
as_rec_props_clear(&urecord->pickled_rec_props);
bool udf_xdr_ship_op = false;
getop(urecord, urecord_op);
if (UDF_OP_IS_DELETE(*urecord_op)
|| UDF_OP_IS_WRITE(*urecord_op)) {
udf_xdr_ship_op = true;
}
cf_detail(AS_UDF, "FINISH working with LDT Record %p %p %p %p %d", &urecord,
urecord->tr, urecord->r_ref, urecord->rd,
(urecord->flag & UDF_RECORD_FLAG_STORAGE_OPEN));
// If there exists a record reference but no bin of the record is in use,
// delete the record. remove from the tree. Only LDT_RECORD here not needed
// for LDT_SUBRECORD (only do it if requested by UDF). All the SUBRECORD of
// removed LDT_RECORD will be lazily cleaned up by defrag.
if (udf_zero_bins_left(urecord)) {
as_transaction *tr = urecord->tr;
as_index_delete(tr->rsv.tree, &tr->keyd);
urecord->starting_memory_bytes = 0;
*urecord_op = UDF_OPTYPE_DELETE;
}
else if (*urecord_op == UDF_OPTYPE_WRITE) {
cf_detail_digest(AS_UDF, &rd->keyd, "Committing Changes n_bins %d", as_bin_get_n_bins(r_ref->r, rd));
size_t rec_props_data_size = as_storage_record_rec_props_size(rd);
uint8_t rec_props_data[rec_props_data_size];
if (rec_props_data_size > 0) {
as_storage_record_set_rec_props(rd, rec_props_data);
}
write_udf_post_processing(tr, rd, &urecord->pickled_buf,
&urecord->pickled_sz, &urecord->pickled_rec_props,
urecord->starting_memory_bytes);
// Now ok to accommodate a new stored key...
if (! as_index_is_flag_set(r_ref->r, AS_INDEX_FLAG_KEY_STORED) && rd->key) {
if (rd->ns->storage_data_in_memory) {
as_record_allocate_key(r_ref->r, rd->key, rd->key_size);
}
as_index_set_flags(r_ref->r, AS_INDEX_FLAG_KEY_STORED);
}
// ... or drop a stored key.
else if (as_index_is_flag_set(r_ref->r, AS_INDEX_FLAG_KEY_STORED) && ! rd->key) {
if (rd->ns->storage_data_in_memory) {
as_record_remove_key(r_ref->r);
}
as_index_clear_flags(r_ref->r, AS_INDEX_FLAG_KEY_STORED);
}
}
// Collect the record information (for XDR) before closing the record
as_generation generation = 0;
if (urecord->flag & UDF_RECORD_FLAG_OPEN) {
generation = r_ref->r->generation;
set_id = as_index_get_set_id(r_ref->r);
}
urecord->op = *urecord_op;
// Close the record for all the cases
udf_record_close(urecord);
// Write to XDR pipe after closing the record, in order to release the record lock as
// early as possible.
if (udf_xdr_ship_op == true) {
if (UDF_OP_IS_WRITE(*urecord_op)) {
cf_detail(AS_UDF, "UDF write shipping for key %" PRIx64, tr->keyd);
xdr_write(tr->rsv.ns, tr->keyd, generation, 0, false, set_id);
} else if (UDF_OP_IS_DELETE(*urecord_op)) {
cf_detail(AS_UDF, "UDF delete shipping for key %" PRIx64, tr->keyd);
xdr_write(tr->rsv.ns, tr->keyd, generation, 0, true, set_id);
}
}
}