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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* MGMTD Transactions
*
* Copyright (C) 2021 Vmware, Inc.
* Pushpasis Sarkar <spushpasis@vmware.com>
*/
#ifndef _FRR_MGMTD_TXN_H_
#define _FRR_MGMTD_TXN_H_
#include "mgmtd/mgmt_be_adapter.h"
#include "mgmtd/mgmt.h"
#include "mgmtd/mgmt_ds.h"
#define MGMTD_TXN_PROC_DELAY_MSEC 5
#define MGMTD_TXN_PROC_DELAY_USEC 10
#define MGMTD_TXN_MAX_NUM_SETCFG_PROC 128
#define MGMTD_TXN_MAX_NUM_GETCFG_PROC 128
#define MGMTD_TXN_MAX_NUM_GETDATA_PROC 128
#define MGMTD_TXN_SEND_CFGVALIDATE_DELAY_MSEC 100
#define MGMTD_TXN_SEND_CFGAPPLY_DELAY_MSEC 100
#define MGMTD_TXN_CFG_COMMIT_MAX_DELAY_MSEC 30000 /* 30 seconds */
#define MGMTD_TXN_CLEANUP_DELAY_MSEC 100
#define MGMTD_TXN_CLEANUP_DELAY_USEC 10
#define MGMTD_TXN_ID_NONE 0
/*
* The following definition enables local validation of config
* on the MGMTD process by loading client-defined NB callbacks
* and calling them locally before sening CNFG_APPLY_REQ to
* backend for actual apply of configuration on internal state
* of the backend application.
*
* #define MGMTD_LOCAL_VALIDATIONS_ENABLED
*
* Note: Enabled by default in configure.ac, if this needs to be
* disabled then pass --enable-mgmtd-local-validations=no to
* the list of arguments passed to ./configure
*/
PREDECL_LIST(mgmt_txns);
struct mgmt_master;
enum mgmt_txn_type {
MGMTD_TXN_TYPE_NONE = 0,
MGMTD_TXN_TYPE_CONFIG,
MGMTD_TXN_TYPE_SHOW
};
static inline const char *mgmt_txn_type2str(enum mgmt_txn_type type)
{
switch (type) {
case MGMTD_TXN_TYPE_NONE:
return "None";
case MGMTD_TXN_TYPE_CONFIG:
return "CONFIG";
case MGMTD_TXN_TYPE_SHOW:
return "SHOW";
}
return "Unknown";
}
/* Initialise transaction module. */
extern int mgmt_txn_init(struct mgmt_master *cm, struct event_loop *tm);
/* Destroy the transaction module. */
extern void mgmt_txn_destroy(void);
/*
* Check if transaction is in progress.
*
* Returns:
* session ID if in-progress, MGMTD_SESSION_ID_NONE otherwise.
*/
extern uint64_t mgmt_config_txn_in_progress(void);
/*
* Create transaction.
*
* session_id
* Session ID.
*
* type
* Transaction type (CONFIG/SHOW/NONE)
*
* Returns:
* transaction ID.
*/
extern uint64_t mgmt_create_txn(uint64_t session_id, enum mgmt_txn_type type);
/*
* Destroy transaction.
*
* txn_id
* Unique transaction identifier.
*/
extern void mgmt_destroy_txn(uint64_t *txn_id);
/*
* Send set-config request to be processed later in transaction.
*
* txn_id
* Unique transaction identifier.
*
* req_id
* Unique transaction request identifier.
*
* ds_id
* Datastore ID.
*
* ds_hndl
* Datastore handle.
*
* cfg_req
* Config requests.
*
* num_req
* Number of config requests.
*
* implicit_commit
* TRUE if the commit is implicit, FALSE otherwise.
*
* dst_ds_id
* Destination datastore ID.
*
* dst_ds_handle
* Destination datastore handle.
*
* Returns:
* 0 on success, -1 on failures.
*/
extern int mgmt_txn_send_set_config_req(uint64_t txn_id, uint64_t req_id,
Mgmtd__DatastoreId ds_id,
struct mgmt_ds_ctx *ds_ctx,
Mgmtd__YangCfgDataReq **cfg_req,
size_t num_req, bool implicit_commit,
Mgmtd__DatastoreId dst_ds_id,
struct mgmt_ds_ctx *dst_ds_ctx);
/*
* Send commit-config request to be processed later in transaction.
*
* txn_id
* Unique transaction identifier.
*
* req_id
* Unique transaction request identifier.
*
* src_ds_id
* Source datastore ID.
*
* src_ds_hndl
* Source Datastore handle.
*
* validate_only
* TRUE if commit request needs to be validated only, FALSE otherwise.
*
* abort
* TRUE if need to restore Src DS back to Dest DS, FALSE otherwise.
*
* implicit
* TRUE if the commit is implicit, FALSE otherwise.
*
* Returns:
* 0 on success, -1 on failures.
*/
extern int mgmt_txn_send_commit_config_req(uint64_t txn_id, uint64_t req_id,
Mgmtd__DatastoreId src_ds_id,
struct mgmt_ds_ctx *dst_ds_ctx,
Mgmtd__DatastoreId dst_ds_id,
struct mgmt_ds_ctx *src_ds_ctx,
bool validate_only, bool abort,
bool implicit);
/*
* Send get-{cfg,data} request to be processed later in transaction.
*
* Is get-config if cfg_root is provided and the config is gathered locally,
* otherwise it's get-data and data is fetched from backedn clients.
*/
extern int mgmt_txn_send_get_req(uint64_t txn_id, uint64_t req_id,
Mgmtd__DatastoreId ds_id,
struct nb_config *cfg_root,
Mgmtd__YangGetDataReq **data_req,
size_t num_reqs);
/*
* Notifiy backend adapter on connection.
*/
extern int
mgmt_txn_notify_be_adapter_conn(struct mgmt_be_client_adapter *adapter,
bool connect);
/*
* Reply to backend adapter about transaction create/delete.
*/
extern int
mgmt_txn_notify_be_txn_reply(uint64_t txn_id, bool create, bool success,
struct mgmt_be_client_adapter *adapter);
/*
* Reply to backend adapater with config data create request.
*/
extern int
mgmt_txn_notify_be_cfgdata_reply(uint64_t txn_id, bool success,
char *error_if_any,
struct mgmt_be_client_adapter *adapter);
/*
* Reply to backend adapater with config data validate request.
*/
extern int mgmt_txn_notify_be_cfg_validate_reply(
uint64_t txn_id, bool success, uint64_t batch_ids[],
size_t num_batch_ids, char *error_if_any,
struct mgmt_be_client_adapter *adapter);
/*
* Reply to backend adapater with config data apply request.
*/
extern int
mgmt_txn_notify_be_cfg_apply_reply(uint64_t txn_id, bool success,
char *error_if_any,
struct mgmt_be_client_adapter *adapter);
/*
* Dump transaction status to vty.
*/
extern void mgmt_txn_status_write(struct vty *vty);
/*
* Trigger rollback config apply.
*
* Creates a new transaction and commit request for rollback.
*/
extern int
mgmt_txn_rollback_trigger_cfg_apply(struct mgmt_ds_ctx *src_ds_ctx,
struct mgmt_ds_ctx *dst_ds_ctx);
#endif /* _FRR_MGMTD_TXN_H_ */
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