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-rw-r--r--lib/northbound_sysrepo.c769
1 files changed, 769 insertions, 0 deletions
diff --git a/lib/northbound_sysrepo.c b/lib/northbound_sysrepo.c
new file mode 100644
index 0000000..f035ac8
--- /dev/null
+++ b/lib/northbound_sysrepo.c
@@ -0,0 +1,769 @@
+/*
+ * Copyright (C) 2018 NetDEF, Inc.
+ * Renato Westphal
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <zebra.h>
+
+#include "log.h"
+#include "lib_errors.h"
+#include "command.h"
+#include "debug.h"
+#include "memory.h"
+#include "libfrr.h"
+#include "lib/version.h"
+#include "northbound.h"
+
+#include <sysrepo.h>
+#include <sysrepo/values.h>
+#include <sysrepo/xpath.h>
+
+DEFINE_MTYPE_STATIC(LIB, SYSREPO, "Sysrepo module");
+
+static struct debug nb_dbg_client_sysrepo = {0, "Northbound client: Sysrepo"};
+
+static struct thread_master *master;
+static sr_session_ctx_t *session;
+static sr_conn_ctx_t *connection;
+static struct nb_transaction *transaction;
+
+static void frr_sr_read_cb(struct thread *thread);
+static int frr_sr_finish(void);
+
+/* Convert FRR YANG data value to sysrepo YANG data value. */
+static int yang_data_frr2sr(struct yang_data *frr_data, sr_val_t *sr_data)
+{
+ struct nb_node *nb_node;
+ const struct lysc_node *snode;
+ struct lysc_node_container *scontainer;
+ struct lysc_node_leaf *sleaf;
+ struct lysc_node_leaflist *sleaflist;
+ LY_DATA_TYPE type;
+
+ sr_val_set_xpath(sr_data, frr_data->xpath);
+
+ nb_node = nb_node_find(frr_data->xpath);
+ if (!nb_node) {
+ flog_warn(EC_LIB_YANG_UNKNOWN_DATA_PATH,
+ "%s: unknown data path: %s", __func__,
+ frr_data->xpath);
+ return -1;
+ }
+
+ snode = nb_node->snode;
+ switch (snode->nodetype) {
+ case LYS_CONTAINER:
+ scontainer = (struct lysc_node_container *)snode;
+ if (!CHECK_FLAG(scontainer->flags, LYS_PRESENCE))
+ return -1;
+ sr_data->type = SR_CONTAINER_PRESENCE_T;
+ return 0;
+ case LYS_LIST:
+ sr_data->type = SR_LIST_T;
+ return 0;
+ case LYS_LEAF:
+ sleaf = (struct lysc_node_leaf *)snode;
+ type = sleaf->type->basetype;
+ break;
+ case LYS_LEAFLIST:
+ sleaflist = (struct lysc_node_leaflist *)snode;
+ type = sleaflist->type->basetype;
+ break;
+ default:
+ return -1;
+ }
+
+ switch (type) {
+ case LY_TYPE_BINARY:
+ sr_val_set_str_data(sr_data, SR_BINARY_T, frr_data->value);
+ break;
+ case LY_TYPE_BITS:
+ sr_val_set_str_data(sr_data, SR_BITS_T, frr_data->value);
+ break;
+ case LY_TYPE_BOOL:
+ sr_data->type = SR_BOOL_T;
+ sr_data->data.bool_val = yang_str2bool(frr_data->value);
+ break;
+ case LY_TYPE_DEC64:
+ sr_data->type = SR_DECIMAL64_T;
+ sr_data->data.decimal64_val =
+ yang_str2dec64(frr_data->xpath, frr_data->value);
+ break;
+ case LY_TYPE_EMPTY:
+ sr_data->type = SR_LEAF_EMPTY_T;
+ break;
+ case LY_TYPE_ENUM:
+ sr_val_set_str_data(sr_data, SR_ENUM_T, frr_data->value);
+ break;
+ case LY_TYPE_IDENT:
+ sr_val_set_str_data(sr_data, SR_IDENTITYREF_T, frr_data->value);
+ break;
+ case LY_TYPE_INST:
+ sr_val_set_str_data(sr_data, SR_INSTANCEID_T, frr_data->value);
+ break;
+ case LY_TYPE_INT8:
+ sr_data->type = SR_INT8_T;
+ sr_data->data.int8_val = yang_str2int8(frr_data->value);
+ break;
+ case LY_TYPE_INT16:
+ sr_data->type = SR_INT16_T;
+ sr_data->data.int16_val = yang_str2int16(frr_data->value);
+ break;
+ case LY_TYPE_INT32:
+ sr_data->type = SR_INT32_T;
+ sr_data->data.int32_val = yang_str2int32(frr_data->value);
+ break;
+ case LY_TYPE_INT64:
+ sr_data->type = SR_INT64_T;
+ sr_data->data.int64_val = yang_str2int64(frr_data->value);
+ break;
+ case LY_TYPE_STRING:
+ sr_val_set_str_data(sr_data, SR_STRING_T, frr_data->value);
+ break;
+ case LY_TYPE_UINT8:
+ sr_data->type = SR_UINT8_T;
+ sr_data->data.uint8_val = yang_str2uint8(frr_data->value);
+ break;
+ case LY_TYPE_UINT16:
+ sr_data->type = SR_UINT16_T;
+ sr_data->data.uint16_val = yang_str2uint16(frr_data->value);
+ break;
+ case LY_TYPE_UINT32:
+ sr_data->type = SR_UINT32_T;
+ sr_data->data.uint32_val = yang_str2uint32(frr_data->value);
+ break;
+ case LY_TYPE_UINT64:
+ sr_data->type = SR_UINT64_T;
+ sr_data->data.uint64_val = yang_str2uint64(frr_data->value);
+ break;
+ default:
+ return -1;
+ }
+
+ return 0;
+}
+
+static int frr_sr_process_change(struct nb_config *candidate,
+ sr_change_oper_t sr_op, sr_val_t *sr_old_val,
+ sr_val_t *sr_new_val)
+{
+ struct nb_node *nb_node;
+ enum nb_operation nb_op;
+ sr_val_t *sr_data;
+ const char *xpath;
+ char value_str[YANG_VALUE_MAXLEN];
+ struct yang_data *data;
+ int ret;
+
+ sr_data = sr_new_val ? sr_new_val : sr_old_val;
+ assert(sr_data);
+
+ xpath = sr_data->xpath;
+
+ DEBUGD(&nb_dbg_client_sysrepo, "sysrepo: processing change [xpath %s]",
+ xpath);
+
+ /* Non-presence container - nothing to do. */
+ if (sr_data->type == SR_CONTAINER_T)
+ return NB_OK;
+
+ nb_node = nb_node_find(xpath);
+ if (!nb_node) {
+ flog_warn(EC_LIB_YANG_UNKNOWN_DATA_PATH,
+ "%s: unknown data path: %s", __func__, xpath);
+ return NB_ERR;
+ }
+
+ /* Map operation values. */
+ switch (sr_op) {
+ case SR_OP_CREATED:
+ case SR_OP_MODIFIED:
+ if (nb_operation_is_valid(NB_OP_CREATE, nb_node->snode))
+ nb_op = NB_OP_CREATE;
+ else if (nb_operation_is_valid(NB_OP_MODIFY, nb_node->snode)) {
+ nb_op = NB_OP_MODIFY;
+ } else
+ /* Ignore list keys modifications. */
+ return NB_OK;
+ break;
+ case SR_OP_DELETED:
+ /*
+ * When a list is deleted or one of its keys is changed, we are
+ * notified about the removal of all of its leafs, even the ones
+ * that are non-optional. We need to ignore these notifications.
+ */
+ if (!nb_operation_is_valid(NB_OP_DESTROY, nb_node->snode))
+ return NB_OK;
+
+ nb_op = NB_OP_DESTROY;
+ break;
+ case SR_OP_MOVED:
+ nb_op = NB_OP_MOVE;
+ break;
+ default:
+ flog_err(EC_LIB_DEVELOPMENT,
+ "%s: unexpected operation %u [xpath %s]", __func__,
+ sr_op, xpath);
+ return NB_ERR;
+ }
+
+ sr_val_to_buff(sr_data, value_str, sizeof(value_str));
+ data = yang_data_new(xpath, value_str);
+
+ ret = nb_candidate_edit(candidate, nb_node, nb_op, xpath, NULL, data);
+ yang_data_free(data);
+ if (ret != NB_OK && ret != NB_ERR_NOT_FOUND) {
+ flog_warn(
+ EC_LIB_NB_CANDIDATE_EDIT_ERROR,
+ "%s: failed to edit candidate configuration: operation [%s] xpath [%s]",
+ __func__, nb_operation_name(nb_op), xpath);
+ return NB_ERR;
+ }
+
+ return NB_OK;
+}
+
+static int frr_sr_config_change_cb_prepare(sr_session_ctx_t *session,
+ const char *module_name)
+{
+ sr_change_iter_t *it;
+ int ret;
+ sr_change_oper_t sr_op;
+ sr_val_t *sr_old_val, *sr_new_val;
+ struct nb_context context = {};
+ struct nb_config *candidate;
+ char errmsg[BUFSIZ] = {0};
+
+ ret = sr_get_changes_iter(session, "//*", &it);
+ if (ret != SR_ERR_OK) {
+ flog_err(EC_LIB_LIBSYSREPO,
+ "%s: sr_get_changes_iter() failed for \"%s\"",
+ __func__, module_name);
+ return ret;
+ }
+
+ candidate = nb_config_dup(running_config);
+
+ while ((ret = sr_get_change_next(session, it, &sr_op, &sr_old_val,
+ &sr_new_val))
+ == SR_ERR_OK) {
+ ret = frr_sr_process_change(candidate, sr_op, sr_old_val,
+ sr_new_val);
+ sr_free_val(sr_old_val);
+ sr_free_val(sr_new_val);
+ if (ret != NB_OK)
+ break;
+ }
+
+ sr_free_change_iter(it);
+ if (ret != NB_OK && ret != SR_ERR_NOT_FOUND) {
+ nb_config_free(candidate);
+ return SR_ERR_INTERNAL;
+ }
+
+ transaction = NULL;
+ context.client = NB_CLIENT_SYSREPO;
+ /*
+ * Validate the configuration changes and allocate all resources
+ * required to apply them.
+ */
+ ret = nb_candidate_commit_prepare(&context, candidate, NULL,
+ &transaction, errmsg, sizeof(errmsg));
+ if (ret != NB_OK && ret != NB_ERR_NO_CHANGES)
+ flog_warn(
+ EC_LIB_LIBSYSREPO,
+ "%s: failed to prepare configuration transaction: %s (%s)",
+ __func__, nb_err_name(ret), errmsg);
+
+ if (!transaction)
+ nb_config_free(candidate);
+
+ /* Map northbound return code to sysrepo return code. */
+ switch (ret) {
+ case NB_OK:
+ return SR_ERR_OK;
+ case NB_ERR_NO_CHANGES:
+ return SR_ERR_OK;
+ case NB_ERR_LOCKED:
+ return SR_ERR_LOCKED;
+ case NB_ERR_RESOURCE:
+ return SR_ERR_NO_MEMORY;
+ default:
+ return SR_ERR_VALIDATION_FAILED;
+ }
+}
+
+static int frr_sr_config_change_cb_apply(sr_session_ctx_t *session,
+ const char *module_name)
+{
+ /* Apply the transaction. */
+ if (transaction) {
+ struct nb_config *candidate = transaction->config;
+ char errmsg[BUFSIZ] = {0};
+
+ nb_candidate_commit_apply(transaction, true, NULL, errmsg,
+ sizeof(errmsg));
+ nb_config_free(candidate);
+ }
+
+ return SR_ERR_OK;
+}
+
+static int frr_sr_config_change_cb_abort(sr_session_ctx_t *session,
+ const char *module_name)
+{
+ /* Abort the transaction. */
+ if (transaction) {
+ struct nb_config *candidate = transaction->config;
+ char errmsg[BUFSIZ] = {0};
+
+ nb_candidate_commit_abort(transaction, errmsg, sizeof(errmsg));
+ nb_config_free(candidate);
+ }
+
+ return SR_ERR_OK;
+}
+
+/* Callback for changes in the running configuration. */
+static int frr_sr_config_change_cb(sr_session_ctx_t *session, uint32_t sub_id,
+ const char *module_name, const char *xpath,
+ sr_event_t sr_ev, uint32_t request_id,
+ void *private_data)
+{
+ switch (sr_ev) {
+ case SR_EV_ENABLED:
+ case SR_EV_CHANGE:
+ return frr_sr_config_change_cb_prepare(session, module_name);
+ case SR_EV_DONE:
+ return frr_sr_config_change_cb_apply(session, module_name);
+ case SR_EV_ABORT:
+ return frr_sr_config_change_cb_abort(session, module_name);
+ default:
+ flog_err(EC_LIB_LIBSYSREPO, "%s: unexpected sysrepo event: %u",
+ __func__, sr_ev);
+ return SR_ERR_INTERNAL;
+ }
+}
+
+static int frr_sr_state_data_iter_cb(const struct lysc_node *snode,
+ struct yang_translator *translator,
+ struct yang_data *data, void *arg)
+{
+ struct lyd_node *dnode = arg;
+ LY_ERR ly_errno;
+
+ ly_errno = 0;
+ ly_errno = lyd_new_path(NULL, ly_native_ctx, data->xpath, data->value,
+ 0, &dnode);
+ if (!dnode && ly_errno) {
+ flog_warn(EC_LIB_LIBYANG, "%s: lyd_new_path() failed",
+ __func__);
+ yang_data_free(data);
+ return NB_ERR;
+ }
+
+ yang_data_free(data);
+ return NB_OK;
+}
+
+/* Callback for state retrieval. */
+static int frr_sr_state_cb(sr_session_ctx_t *session, uint32_t sub_id,
+ const char *module_name, const char *xpath,
+ const char *request_xpath, uint32_t request_id,
+ struct lyd_node **parent, void *private_ctx)
+{
+ struct lyd_node *dnode;
+
+ dnode = *parent;
+ if (nb_oper_data_iterate(request_xpath, NULL, 0,
+ frr_sr_state_data_iter_cb, dnode)
+ != NB_OK) {
+ flog_warn(EC_LIB_NB_OPERATIONAL_DATA,
+ "%s: failed to obtain operational data [xpath %s]",
+ __func__, xpath);
+ return SR_ERR_INTERNAL;
+ }
+
+ *parent = dnode;
+
+ return SR_ERR_OK;
+}
+static int frr_sr_config_rpc_cb(sr_session_ctx_t *session, uint32_t sub_id,
+ const char *xpath, const sr_val_t *sr_input,
+ const size_t input_cnt, sr_event_t sr_ev,
+ uint32_t request_id, sr_val_t **sr_output,
+ size_t *sr_output_cnt, void *private_ctx)
+{
+ struct nb_node *nb_node;
+ struct list *input;
+ struct list *output;
+ struct yang_data *data;
+ size_t cb_output_cnt;
+ int ret = SR_ERR_OK;
+ char errmsg[BUFSIZ] = {0};
+
+ nb_node = nb_node_find(xpath);
+ if (!nb_node) {
+ flog_warn(EC_LIB_YANG_UNKNOWN_DATA_PATH,
+ "%s: unknown data path: %s", __func__, xpath);
+ return SR_ERR_INTERNAL;
+ }
+
+ input = yang_data_list_new();
+ output = yang_data_list_new();
+
+ /* Process input. */
+ for (size_t i = 0; i < input_cnt; i++) {
+ char value_str[YANG_VALUE_MAXLEN];
+
+ sr_val_to_buff(&sr_input[i], value_str, sizeof(value_str));
+
+ data = yang_data_new(xpath, value_str);
+ listnode_add(input, data);
+ }
+
+ /* Execute callback registered for this XPath. */
+ if (nb_callback_rpc(nb_node, xpath, input, output, errmsg,
+ sizeof(errmsg))
+ != NB_OK) {
+ flog_warn(EC_LIB_NB_CB_RPC, "%s: rpc callback failed: %s",
+ __func__, xpath);
+ ret = SR_ERR_OPERATION_FAILED;
+ goto exit;
+ }
+
+ /* Process output. */
+ if (listcount(output) > 0) {
+ sr_val_t *values = NULL;
+ struct listnode *node;
+ int i = 0;
+
+ cb_output_cnt = listcount(output);
+ ret = sr_new_values(cb_output_cnt, &values);
+ if (ret != SR_ERR_OK) {
+ flog_err(EC_LIB_LIBSYSREPO, "%s: sr_new_values(): %s",
+ __func__, sr_strerror(ret));
+ goto exit;
+ }
+
+ for (ALL_LIST_ELEMENTS_RO(output, node, data)) {
+ if (yang_data_frr2sr(data, &values[i++]) != 0) {
+ flog_err(
+ EC_LIB_SYSREPO_DATA_CONVERT,
+ "%s: failed to convert data to Sysrepo format",
+ __func__);
+ ret = SR_ERR_INTERNAL;
+ sr_free_values(values, cb_output_cnt);
+ goto exit;
+ }
+ }
+
+ *sr_output = values;
+ *sr_output_cnt = cb_output_cnt;
+ }
+
+exit:
+ /* Release memory. */
+ list_delete(&input);
+ list_delete(&output);
+
+ return ret;
+}
+
+static int frr_sr_notification_send(const char *xpath, struct list *arguments)
+{
+ sr_val_t *values = NULL;
+ size_t values_cnt = 0;
+ int ret;
+
+ if (arguments && listcount(arguments) > 0) {
+ struct yang_data *data;
+ struct listnode *node;
+ int i = 0;
+
+ values_cnt = listcount(arguments);
+ ret = sr_new_values(values_cnt, &values);
+ if (ret != SR_ERR_OK) {
+ flog_err(EC_LIB_LIBSYSREPO, "%s: sr_new_values(): %s",
+ __func__, sr_strerror(ret));
+ return NB_ERR;
+ }
+
+ for (ALL_LIST_ELEMENTS_RO(arguments, node, data)) {
+ if (yang_data_frr2sr(data, &values[i++]) != 0) {
+ flog_err(
+ EC_LIB_SYSREPO_DATA_CONVERT,
+ "%s: failed to convert data to sysrepo format",
+ __func__);
+ sr_free_values(values, values_cnt);
+ return NB_ERR;
+ }
+ }
+ }
+
+ ret = sr_notif_send(session, xpath, values, values_cnt, 0, 0);
+ if (ret != SR_ERR_OK) {
+ flog_err(EC_LIB_LIBSYSREPO,
+ "%s: sr_event_notif_send() failed for xpath %s",
+ __func__, xpath);
+ return NB_ERR;
+ }
+
+ return NB_OK;
+}
+
+static void frr_sr_read_cb(struct thread *thread)
+{
+ struct yang_module *module = THREAD_ARG(thread);
+ int fd = THREAD_FD(thread);
+ int ret;
+
+ ret = sr_subscription_process_events(module->sr_subscription, session,
+ NULL);
+ if (ret != SR_ERR_OK) {
+ flog_err(EC_LIB_LIBSYSREPO, "%s: sr_fd_event_process(): %s",
+ __func__, sr_strerror(ret));
+ return;
+ }
+
+ thread_add_read(master, frr_sr_read_cb, module, fd, &module->sr_thread);
+}
+
+static void frr_sr_subscribe_config(struct yang_module *module)
+{
+ int ret;
+
+ DEBUGD(&nb_dbg_client_sysrepo,
+ "sysrepo: subscribing for configuration changes made in the '%s' module",
+ module->name);
+
+ ret = sr_module_change_subscribe(
+ session, module->name, NULL, frr_sr_config_change_cb, NULL, 0,
+ SR_SUBSCR_DEFAULT | SR_SUBSCR_ENABLED | SR_SUBSCR_NO_THREAD,
+ &module->sr_subscription);
+ if (ret != SR_ERR_OK)
+ flog_err(EC_LIB_LIBSYSREPO, "sr_module_change_subscribe(): %s",
+ sr_strerror(ret));
+}
+
+static int frr_sr_subscribe_state(const struct lysc_node *snode, void *arg)
+{
+ struct yang_module *module = arg;
+ struct nb_node *nb_node;
+ int ret;
+
+ if (!CHECK_FLAG(snode->flags, LYS_CONFIG_R))
+ return YANG_ITER_CONTINUE;
+ /* We only need to subscribe to the root of the state subtrees. */
+ if (snode->parent && CHECK_FLAG(snode->parent->flags, LYS_CONFIG_R))
+ return YANG_ITER_CONTINUE;
+
+ nb_node = snode->priv;
+ if (!nb_node)
+ return YANG_ITER_CONTINUE;
+
+ DEBUGD(&nb_dbg_client_sysrepo, "sysrepo: providing data to '%s'",
+ nb_node->xpath);
+
+ ret = sr_oper_get_subscribe(session, snode->module->name,
+ nb_node->xpath, frr_sr_state_cb, NULL, 0,
+ &module->sr_subscription);
+ if (ret != SR_ERR_OK)
+ flog_err(EC_LIB_LIBSYSREPO, "sr_oper_get_items_subscribe(): %s",
+ sr_strerror(ret));
+
+ return YANG_ITER_CONTINUE;
+}
+
+static int frr_sr_subscribe_rpc(const struct lysc_node *snode, void *arg)
+{
+ struct yang_module *module = arg;
+ struct nb_node *nb_node;
+ int ret;
+
+ if (snode->nodetype != LYS_RPC)
+ return YANG_ITER_CONTINUE;
+
+ nb_node = snode->priv;
+ if (!nb_node)
+ return YANG_ITER_CONTINUE;
+
+ DEBUGD(&nb_dbg_client_sysrepo, "sysrepo: providing RPC to '%s'",
+ nb_node->xpath);
+
+ ret = sr_rpc_subscribe(session, nb_node->xpath, frr_sr_config_rpc_cb,
+ NULL, 0, 0, &module->sr_subscription);
+ if (ret != SR_ERR_OK)
+ flog_err(EC_LIB_LIBSYSREPO, "sr_rpc_subscribe(): %s",
+ sr_strerror(ret));
+
+ return YANG_ITER_CONTINUE;
+}
+
+/* CLI commands. */
+DEFUN (debug_nb_sr,
+ debug_nb_sr_cmd,
+ "[no] debug northbound client sysrepo",
+ NO_STR
+ DEBUG_STR
+ "Northbound debugging\n"
+ "Northbound client\n"
+ "Sysrepo\n")
+{
+ uint32_t mode = DEBUG_NODE2MODE(vty->node);
+ bool no = strmatch(argv[0]->text, "no");
+
+ DEBUG_MODE_SET(&nb_dbg_client_sysrepo, mode, !no);
+
+ return CMD_SUCCESS;
+}
+
+static int frr_sr_debug_config_write(struct vty *vty)
+{
+ if (DEBUG_MODE_CHECK(&nb_dbg_client_sysrepo, DEBUG_MODE_CONF))
+ vty_out(vty, "debug northbound client sysrepo\n");
+
+ return 0;
+}
+
+static int frr_sr_debug_set_all(uint32_t flags, bool set)
+{
+ DEBUG_FLAGS_SET(&nb_dbg_client_sysrepo, flags, set);
+
+ /* If all modes have been turned off, don't preserve options. */
+ if (!DEBUG_MODE_CHECK(&nb_dbg_client_sysrepo, DEBUG_MODE_ALL))
+ DEBUG_CLEAR(&nb_dbg_client_sysrepo);
+
+ return 0;
+}
+
+static void frr_sr_cli_init(void)
+{
+ hook_register(nb_client_debug_config_write, frr_sr_debug_config_write);
+ hook_register(nb_client_debug_set_all, frr_sr_debug_set_all);
+
+ install_element(ENABLE_NODE, &debug_nb_sr_cmd);
+ install_element(CONFIG_NODE, &debug_nb_sr_cmd);
+}
+
+/* FRR's Sysrepo initialization. */
+static int frr_sr_init(void)
+{
+ struct yang_module *module;
+ int ret;
+
+ /* Connect to Sysrepo. */
+ ret = sr_connect(SR_CONN_DEFAULT, &connection);
+ if (ret != SR_ERR_OK) {
+ flog_err(EC_LIB_SYSREPO_INIT, "%s: sr_connect(): %s", __func__,
+ sr_strerror(ret));
+ goto cleanup;
+ }
+
+ /* Start session. */
+ ret = sr_session_start(connection, SR_DS_RUNNING, &session);
+ if (ret != SR_ERR_OK) {
+ flog_err(EC_LIB_SYSREPO_INIT, "%s: sr_session_start(): %s",
+ __func__, sr_strerror(ret));
+ goto cleanup;
+ }
+
+ /* Perform subscriptions. */
+ RB_FOREACH (module, yang_modules, &yang_modules) {
+ int event_pipe;
+
+ frr_sr_subscribe_config(module);
+ yang_snodes_iterate(module->info, frr_sr_subscribe_state, 0,
+ module);
+ yang_snodes_iterate(module->info, frr_sr_subscribe_rpc, 0,
+ module);
+
+ /* Watch subscriptions. */
+ ret = sr_get_event_pipe(module->sr_subscription, &event_pipe);
+ if (ret != SR_ERR_OK) {
+ flog_err(EC_LIB_SYSREPO_INIT,
+ "%s: sr_get_event_pipe(): %s", __func__,
+ sr_strerror(ret));
+ goto cleanup;
+ }
+ thread_add_read(master, frr_sr_read_cb, module,
+ event_pipe, &module->sr_thread);
+ }
+
+ hook_register(nb_notification_send, frr_sr_notification_send);
+
+ return 0;
+
+cleanup:
+ frr_sr_finish();
+
+ return -1;
+}
+
+static int frr_sr_finish(void)
+{
+ struct yang_module *module;
+
+ RB_FOREACH (module, yang_modules, &yang_modules) {
+ if (!module->sr_subscription)
+ continue;
+ sr_unsubscribe(module->sr_subscription);
+ THREAD_OFF(module->sr_thread);
+ }
+
+ if (session)
+ sr_session_stop(session);
+ if (connection)
+ sr_disconnect(connection);
+
+ return 0;
+}
+
+static int frr_sr_module_config_loaded(struct thread_master *tm)
+{
+ master = tm;
+
+ if (frr_sr_init() < 0) {
+ flog_err(EC_LIB_SYSREPO_INIT,
+ "failed to initialize the Sysrepo module");
+ return -1;
+ }
+
+ hook_register(frr_fini, frr_sr_finish);
+
+ return 0;
+}
+
+static int frr_sr_module_late_init(struct thread_master *tm)
+{
+ frr_sr_cli_init();
+
+ return 0;
+}
+
+static int frr_sr_module_init(void)
+{
+ hook_register(frr_late_init, frr_sr_module_late_init);
+ hook_register(frr_config_post, frr_sr_module_config_loaded);
+
+ return 0;
+}
+
+FRR_MODULE_SETUP(.name = "frr_sysrepo", .version = FRR_VERSION,
+ .description = "FRR sysrepo integration module",
+ .init = frr_sr_module_init,
+);
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-01 05:10:56 +0000