/
ovsdb_entry.cc
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/
ovsdb_entry.cc
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/*
* Copyright (c) 2014 Juniper Networks, Inc. All rights reserved.
*/
extern "C" {
#include <ovsdb_wrapper.h>
}
#include <ovsdb_object.h>
#include <ovsdb_entry.h>
#include <ovsdb_types.h>
using OVSDB::OvsdbEntry;
using OVSDB::OvsdbDBEntry;
using OVSDB::OvsdbObject;
using OVSDB::OvsdbDBObject;
OvsdbEntry::OvsdbEntry(OvsdbObject *table) : KSyncEntry(), table_(table),
ovs_entry_(NULL) {
}
OvsdbEntry::OvsdbEntry(OvsdbObject *table, uint32_t index) : KSyncEntry(index),
table_(table), ovs_entry_(NULL) {
}
OvsdbEntry::~OvsdbEntry() {
}
bool OvsdbEntry::Add() {
return true;
}
bool OvsdbEntry::Change() {
return true;
}
bool OvsdbEntry::Delete() {
return true;
}
KSyncObject *OvsdbEntry::GetObject() {
return table_;
}
void OvsdbEntry::Ack(bool success) {
// TODO we don't handle failures for these entries
if (!success) {
OVSDB_TRACE(Error, "Transaction failed for " + ToString());
}
OvsdbObject *object = static_cast<OvsdbObject*>(GetObject());
object->SafeNotifyEvent(this, ack_event_);
}
OvsdbDBEntry::OvsdbDBEntry(OvsdbDBObject *table) : KSyncDBEntry(), table_(table),
ovs_entry_(NULL) {
}
OvsdbDBEntry::OvsdbDBEntry(OvsdbDBObject *table, struct ovsdb_idl_row *ovs_entry) : KSyncDBEntry(),
table_(table), ovs_entry_(ovs_entry) {
}
OvsdbDBEntry::~OvsdbDBEntry() {
}
bool OvsdbDBEntry::Add() {
OvsdbDBObject *object = static_cast<OvsdbDBObject*>(GetObject());
// trigger pre add/change only if idl is not marked deleted.
// we should not update KSync references as, these references eventually
// need to be released as part of delete trigger due to cleanup.
if (object->client_idl_ != NULL && !object->client_idl_->deleted()) {
PreAddChange();
}
if (IsNoTxnEntry()) {
// trigger AddMsg with NULL pointer and return true to complete
// KSync state
AddMsg(NULL);
return true;
}
struct ovsdb_idl_txn *txn;
if (UseBulkTxn()) {
txn = object->client_idl_->CreateBulkTxn(this, KSyncEntry::ADD_ACK);
} else {
txn = object->client_idl_->CreateTxn(this, KSyncEntry::ADD_ACK);
}
if (txn == NULL) {
// failed to create transaction because of idl marked for
// deletion return from here.
TxnDoneNoMessage();
return true;
}
AddMsg(txn);
return object->client_idl_->EncodeSendTxn(txn, this);
}
bool OvsdbDBEntry::Change() {
OvsdbDBObject *object = static_cast<OvsdbDBObject*>(GetObject());
// trigger pre add/change only if idl is not marked deleted.
// we should not update KSync references as, these references eventually
// need to be released as part of delete trigger due to cleanup.
if (object->client_idl_ != NULL && !object->client_idl_->deleted()) {
PreAddChange();
}
if (IsNoTxnEntry()) {
// trigger ChangeMsg with NULL pointer and return true to complete
// KSync state
ChangeMsg(NULL);
return true;
}
struct ovsdb_idl_txn *txn;
if (UseBulkTxn()) {
txn = object->client_idl_->CreateBulkTxn(this, KSyncEntry::CHANGE_ACK);
} else {
txn = object->client_idl_->CreateTxn(this, KSyncEntry::CHANGE_ACK);
}
if (txn == NULL) {
// failed to create transaction because of idl marked for
// deletion return from here.
TxnDoneNoMessage();
return true;
}
ChangeMsg(txn);
return object->client_idl_->EncodeSendTxn(txn, this);
}
bool OvsdbDBEntry::Delete() {
if (IsNoTxnEntry()) {
// trigger DeleteMsg with NULL pointer
DeleteMsg(NULL);
// trigger Post Delete, to allow post delete processing
PostDelete();
// return true to complete KSync State
return true;
}
OvsdbDBObject *object = static_cast<OvsdbDBObject*>(GetObject());
struct ovsdb_idl_txn *txn;
if (UseBulkTxn()) {
txn = object->client_idl_->CreateBulkTxn(this, KSyncEntry::DEL_ACK);
} else {
txn = object->client_idl_->CreateTxn(this, KSyncEntry::DEL_ACK);
}
if (txn == NULL) {
// failed to create transaction because of idl marked for
// deletion return from here.
TxnDoneNoMessage();
return true;
}
DeleteMsg(txn);
bool ret = object->client_idl_->EncodeSendTxn(txn, this);
// trigger post delete if we are not waiting for Ack
// otherwise trigger post delete on Ack
if (ret) {
// current transaction send completed trigger post delete
PostDelete();
}
return ret;
}
bool OvsdbDBEntry::IsDataResolved() {
return (ovs_entry_ == NULL) ? false : true;
}
bool OvsdbDBEntry::IsDelAckWaiting() {
KSyncState state = GetState();
return (state >= DEL_DEFER_DEL_ACK && state <= RENEW_WAIT);
}
bool OvsdbDBEntry::IsAddChangeAckWaiting() {
KSyncState state = GetState();
return (state == SYNC_WAIT || state == NEED_SYNC ||
state == DEL_DEFER_SYNC);
}
void OvsdbDBEntry::NotifyAdd(struct ovsdb_idl_row *row) {
if (ovs_entry_ == NULL) {
ovs_entry_ = row;
} else {
// ovs_entry should never change from Non-NULL value to
// another Non-NULL value.
assert(ovs_entry_ == row);
}
OvsdbChange();
}
void OvsdbDBEntry::NotifyDelete(struct ovsdb_idl_row *row) {
ovs_entry_ = NULL;
}
KSyncObject *OvsdbDBEntry::GetObject() {
return table_;
}
void OvsdbDBEntry::Ack(bool success) {
OvsdbDBObject *object = static_cast<OvsdbDBObject*>(GetObject());
// trigger post delete for Del Ack
if (ack_event_ == KSyncEntry::DEL_ACK) {
// current transaction send completed trigger post delete
PostDelete();
}
if (success) {
if (IsDelAckWaiting())
object->SafeNotifyEvent(this, KSyncEntry::DEL_ACK);
else if (IsAddChangeAckWaiting())
object->SafeNotifyEvent(this, KSyncEntry::ADD_ACK);
else
delete this;
} else {
bool trigger_ack = false;
// On Failure try again
if (IsDelAckWaiting()) {
OVSDB_TRACE(Error, "Delete Transaction failed for " + ToString());
// if we are waiting to renew, dont retry delete.
if (GetState() != RENEW_WAIT) {
// trigger ack when if no message to send, on calling delete
trigger_ack = Delete();
} else {
trigger_ack = true;
}
if (trigger_ack) {
object->SafeNotifyEvent(this, KSyncEntry::DEL_ACK);
}
} else if (IsAddChangeAckWaiting()) {
OVSDB_TRACE(Error, "Add Transaction failed for " + ToString());
// if we are waiting to delete, dont retry add.
if (GetState() != DEL_DEFER_SYNC) {
// Enqueue a change before generating an ADD_ACK to keep
// the entry in a not sync'd state.
object->Change(this);
}
object->SafeNotifyEvent(this, KSyncEntry::ADD_ACK);
} else {
// should never happen
assert(0);
}
}
}
void OvsdbDBEntry::TriggerDeleteAdd() {
if (IsDeleted() || stale()) {
// skip this operation for Deleted/stale Entry, After this operation
// Deleted/Stale entry would become active/non-stale which is not
// intended use of this API, caller must ensure the entry to be Active
// if this operation is required
return;
}
GetObject()->SafeNotifyEvent(this, KSyncEntry::DEL_ADD_REQ);
}