# I want to know how to input instance-identifier **URL:** \ **Category:** CDB and CDB API\ **Created:** [November 29, 2017, 5:26am UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666 "2017-11-29T05:26:49Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![jeongmin.na](https://avatars.discourse-cdn.com/v4/letter/j/ce7236/32.png) [@jeongmin.na](https://dmap-community.ductus.global/u/jeongmin.na)\ **Post date:** [November 29, 2017, 5:26am UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666/1 "2017-11-29T05:26:50Z")
1. There is a yang model as below. ```auto container managed-element { container enb-function { list active-queue-management{ key aqm-index; leaf aqm-index{ type uint16{ range "0..7"; } } leaf qci{ type uint16 { range "0..7"; } } } } } ``` 1. Based on the above yang, I want to send a notification as below. ```xml "<"notification xmlns="urn:ietf:params:xml:ns:netconf:notification:1.0"> "<"eventTime>2017-11-28T12:26:14-00:00"<"/eventTime> "<"data-changed-notification xmlns="http://www.samsung.com"> " <"data-change-event> " <"noti-path>"managed-element/enb-function/active-queue-management[aqm-index=0]""<"/noti-path> " <"noti-store>config"<"/noti-store> "<"noti-operation>updated"<"/noti-operation> "<"noti-data> "<"qci>5"<"/qci> "<"/noti-data> "<"/data-change-event> "<"/data-changed-notification> "<"/notification> ``` 1. I was coding as below to send it as above. ```auto confd_tag_value_t val[MAX_NOTI_INSERT_COUNT +1]; confd_hkeypath_t key, *pKey = &key; pkey_path->len = 4; pKey->v[3][0].type = C_XMLTAG; pKey->v[3][0].val.xmltag.tag = venb_c_managed_element; pKey->v[3][0].val.xmltag.ns = venb_c__ns; pKey->v[2][0].type = C_XMLTAG; pKey->v[2][0].val.xmltag.tag = venb_c_enb_function; pKey->v[2][0].val.xmltag.ns = venb_c__ns; pKey->v[1][0].type = C_XMLTAG; pKey->v[1][0].val.xmltag.tag = venb_c_active_queue_management; pKey->v[1][0].val.xmltag.ns = venb_c__ns; pKey->v[0][0].type = C_UINT16; pKey->v[0][0].val.u16 = 0; CONFD_SET_TAG_XMLBEGIN(&val[insert_cnt], venb_c_data_changed_notification, venb_c__ns); insert_cnt++; CONFD_SET_TAG_XMLBEGIN(&val[insert_cnt], venb_c_data_change_event, venb_c__ns); insert_cnt++; CONFD_SET_TAG_OBJECTREF(& val[insert_cnt], venb_c_noti_path, pKey); insert_cnt++; CONFD_SET_TAG_ENUM_VALUE(&val[insert_cnt], venb_c_noti_store, 0); insert_cnt++; CONFD_SET_TAG_ENUM_VALUE(&val[insert_cnt], venb_c_noti_operation, 1); insert_cnt++; CONFD_SET_TAG_STR(& val[insert_cnt], venb_c_noti_data, (const char *) noti_data.c_str()); insert_cnt++; CONFD_SET_TAG_XMLEND(&val[insert_cnt], venb_c_data_change_event, venb_c__ns); insert_cnt++; CONFD_SET_TAG_XMLEND(&val[insert_cnt], venb_c_data_changed_notification, venb_c__ns); insert_cnt++; confd_notification_send( p_nctx, p_time, val, insert_cnt); ``` 1. If I code as avove, an error occurs in the following areas ```auto -> CONFD_SET_TAG_OBJECTREF(& val[insert_cnt], venb_c_noti_path, pKey); insert_cnt++; ``` 1. When configuring the key path, if i enter only path without list, it works normally. However, if i add the list key, an error occurs. I want to know how to make it as follows. ```auto "managed-element/enb-function/active-queue-management[aqm-index=0]" ``` ---
**Author:** ![cohult](https://yyz2.discourse-cdn.com/flex010/user_avatar/dmap-community.ductus.global/cohult/32/221_2.png) [@cohult](https://dmap-community.ductus.global/u/cohult)\ **Post date:** [November 29, 2017, 9:32am UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666/2 "2017-11-29T09:32:27Z")
Hi, I assume you are using maapi\_xpath2kpath() or similar to convert your path to a confd\_hkeypath\_t? If so, you are missing a “/” in front of “managed-element” in your path. The correct path to maapi\_xpath2kpath() should in your case be: `/managed-element/enb-function/active-queue-management[aqm-index=0]` ---
**Author:** ![mnovak](https://yyz2.discourse-cdn.com/flex010/user_avatar/dmap-community.ductus.global/mnovak/32/183_2.png) [@mnovak](https://dmap-community.ductus.global/u/mnovak)\ **Post date:** [November 29, 2017, 10:07am UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666/3 "2017-11-29T10:07:14Z")
Can you also paste the `yang` representation of your notification and what is **the error** that you get. ---
**Author:** ![cohult](https://yyz2.discourse-cdn.com/flex010/user_avatar/dmap-community.ductus.global/cohult/32/221_2.png) [@cohult](https://dmap-community.ductus.global/u/cohult)\ **Post date:** [November 29, 2017, 10:07am UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666/4 "2017-11-29T10:07:41Z")
Quick example added to the examples.confd/netconf\_notifications example using the built in NETCONF stream instead of your proprietary one: ```auto $ diff -u notifier_builtin_replay_store.bak notifier_builtin_replay_store.c --- notifier_builtin_replay_store.bak 2017-11-29 11:01:50.000000000 +0100 +++ notifier_builtin_replay_store.c 2017-11-29 11:02:30.000000000 +0100 @@ -14,14 +14,16 @@ #include #include +#include #include "notif.h" +#include "ietf-netconf-notifications.h" #define OK(val) (assert((val) == CONFD_OK)) static int ctlsock, workersock; static struct confd_daemon_ctx *dctx; -static struct confd_notification_ctx *live_ctx; +static struct confd_notification_ctx *live_ctx, *netconf_ctx; static int get_ctlsock(struct addrinfo *addr) { @@ -73,6 +75,14 @@ datetime->min = tm.tm_min; } +static void send_netconf_notification(confd_tag_value_t *vals, int nvals) +{ + struct confd_datetime eventTime; + + getdatetime(&eventTime); + OK(confd_notification_send(netconf_ctx, &eventTime, vals, nvals)); +} + static void send_notification(confd_tag_value_t *vals, int nvals) { struct confd_datetime eventTime; @@ -81,6 +91,41 @@ OK(confd_notification_send(live_ctx, &eventTime, vals, nvals)); } +static void send_x(void) +{ + confd_tag_value_t vals[11]; + int i = 0; + + confd_hkeypath_t *kp; + struct sockaddr_in saddr; + struct in_addr an_addr = {0xa0a0a0a0}; + + int msock; + + saddr.sin_addr.s_addr = inet_addr("127.0.0.1"); + saddr.sin_family = AF_INET; + saddr.sin_port = htons(CONFD_PORT); + + msock = socket(PF_INET, SOCK_STREAM, 0); + maapi_connect(msock, (struct sockaddr *)&saddr, sizeof(saddr)); + maapi_xpath2kpath(msock, "/managed-element/enb-function/active-queue-management[aqm-index=0]", &kp); + maapi_close(msock); + + CONFD_SET_TAG_XMLBEGIN(&vals[i], ncn_netconf_config_change, ncn__ns); i++; + CONFD_SET_TAG_XMLBEGIN(&vals[i], ncn_changed_by, ncn__ns); i++; + CONFD_SET_TAG_STR(&vals[i], ncn_username, "admin"); i++; + CONFD_SET_TAG_UINT32(&vals[i], ncn_session_id, 0); i++; + CONFD_SET_TAG_IPV4(&vals[i], ncn_source_host, an_addr); i++; + CONFD_SET_TAG_XMLEND(&vals[i], ncn_changed_by, ncn__ns); i++; + CONFD_SET_TAG_ENUM_VALUE(&vals[i], ncn_datastore, ncn_running); i++; + CONFD_SET_TAG_XMLBEGIN(&vals[i], ncn_edit, ncn__ns); i++; + CONFD_SET_TAG_OBJECTREF(&vals[i], ncn_target, kp); i++; + CONFD_SET_TAG_XMLEND(&vals[i], ncn_edit, ncn__ns); i++; + CONFD_SET_TAG_XMLEND(&vals[i], ncn_netconf_config_change, ncn__ns); i++; + + send_netconf_notification(vals, i); + confd_free_hkeypath(kp); +} + static void send_notifup_1(int index, int flags1, int flags2) { confd_tag_value_t vals[9]; @@ -238,6 +283,16 @@ if (confd_register_notification_stream(dctx, &ncb, &live_ctx) != CONFD_OK) { confd_fatal("Couldn't register stream %s\n", ncb.streamname); } + + memset(&ncb, 0, sizeof(ncb)); + ncb.fd = workersock; + ncb.get_log_times = NULL; + ncb.replay = NULL; + strcpy(ncb.streamname, "NETCONF"); + ncb.cb_opaque = NULL; + if (confd_register_notification_stream(dctx, &ncb, &netconf_ctx) != CONFD_OK) { + confd_fatal("Couldn't register stream %s\n", ncb.streamname); + } if (confd_register_done(dctx) != CONFD_OK) { confd_fatal("Failed to complete registration \n"); } @@ -291,6 +346,9 @@ printf("sending linkDown notification\n"); send_notifdown(1); break; + case 'x': + send_x(); + break; case 'm': printf("sending 10000 random notifications\n"); int i; $ diff -u Makefile.bak Makefile --- Makefile.bak 2017-11-29 11:03:12.000000000 +0100 +++ Makefile 2017-11-29 11:10:10.000000000 +0100 @@ -43,15 +43,17 @@ all: notifier notifier_builtin_replay_store notif.fxs $(CDB_DIR) ssh-keydir @echo "Build complete" +ietf-netconf-notifications.h: + $(CONFDC) --emit-h ietf-netconf-notifications.h $(CONFD_DIR)/etc/confd/ietf-netconf-notifications.fxs notifier: notifier.o $(CC) notifier.o $(LIBS) $(CFLAGS) -ansi -pedantic -o $@ -notifier.o: notifier.c notif.h +notifier.o: notifier.c notif.h ietf-netconf-notifications.h notifier_builtin_replay_store: notifier_builtin_replay_store.o $(CC) notifier_builtin_replay_store.o $(LIBS) $(CFLAGS) -o $@ -notifier_builtin_replay_store.o: notifier_builtin_replay_store.c notif.h +notifier_builtin_replay_store.o: notifier_builtin_replay_store.c notif.h ietf-netconf-notifications.h $ diff -u notif.yang.bak notif.yang --- notif.yang.bak 2017-11-29 11:08:24.000000000 +0100 +++ notif.yang 2017-11-29 09:48:11.000000000 +0100 @@ -14,6 +14,24 @@ } } +container managed-element { + container enb-function { + list active-queue-management{ + key aqm-index; + leaf aqm-index{ + type uint16{ + range "0..7"; + } + } + leaf qci{ + type uint16 { + range "0..7"; + } + } + } + } +} + notification linkUp { leaf ifIndex { type leafref { ``` ---
**Author:** ![jeongmin.na](https://avatars.discourse-cdn.com/v4/letter/j/ce7236/32.png) [@jeongmin.na](https://dmap-community.ductus.global/u/jeongmin.na)\ **Post date:** [November 29, 2017, 11:11am UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666/5 "2017-11-29T11:11:50Z")
It’s as flows. ``` notification data-changed-notification { description "Data change notification."; list data-change-event { key noti-path; leaf noti-path { type instance-identifier; } leaf noti-store { type enumeration { enum config { tailf:code-name data-changed-config; } enum operation { tailf:code-name data-changed-operation; } } } leaf noti-operation { type enumeration { enum created { tailf:code-name data-changed-created; } enum updated { tailf:code-name data-changed-updated; } enum deleted { tailf:code-name data-changed-deleted; } } } anyxml noti-data{ description "DataObject "; } } } ``` ---
**Author:** ![jeongmin.na](https://avatars.discourse-cdn.com/v4/letter/j/ce7236/32.png) [@jeongmin.na](https://dmap-community.ductus.global/u/jeongmin.na)\ **Post date:** [November 29, 2017, 11:13am UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666/6 "2017-11-29T11:13:30Z")
error message is below. DEBUG Invalid confd\_vtype value: 0 ---
**Author:** ![jeongmin.na](https://avatars.discourse-cdn.com/v4/letter/j/ce7236/32.png) [@jeongmin.na](https://dmap-community.ductus.global/u/jeongmin.na)\ **Post date:** [November 29, 2017, 12:44pm UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666/7 "2017-11-29T12:44:13Z")
Hi cohult Thank you for your help. The following code is referenced by the above code. However, the following error occurs. Can you tell me what else to do? ``` int get_key_path(confd_hkeypath_t *kp) { int msock; struct sockaddr_in saddr; struct in_addr an_addr = {0xa0a0a0a0}; saddr.sin_addr.s_addr = inet_addr("127.0.0.1"); saddr.sin_family = AF_INET; saddr.sin_port = htons(CONFD_PORT); msock = socket(PF_INET, SOCK_STREAM, 0); maapi_connect(msock, (struct sockaddr *)&saddr, sizeof(saddr)); dal_load_schemas(); //confd_load_schemas((struct sockaddr*)&d_addr.addr, sizeof(struct sockaddr_in)); maapi_xpath2kpath(msock, "/managed-element/enb-function/active-queue-management[aqm-index=0]", &kp); maapi_close(msock); } ``` - ``` get_key_path(&key_path); CONFD_SET_TAG_OBJECTREF(& val[insert_count], noti_path, & key_path); insert_count++; ``` - =\> 29-Nov-2017::21:10:57.998 svcf-oam-1128-vlan-cmc-00 confd[5403]: devel-c Failed to send notification for stream NETCONF: /data-changed-notification/data-change-event/noti-path: {34,[]}: [] is not a valid value. ---
**Author:** ![jeongmin.na](https://avatars.discourse-cdn.com/v4/letter/j/ce7236/32.png) [@jeongmin.na](https://dmap-community.ductus.global/u/jeongmin.na)\ **Post date:** [November 29, 2017, 1:44pm UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666/8 "2017-11-29T13:44:13Z")
I’ve fixed the issue. I am very grateful for your help. 1. First, I entered the wrong index value. modify -\> [aqm-index=‘0’] 2. Second, The key\_path value is lost after calling get\_key\_path (& key\_path). I did not know that dynamic memory was allocated. Do I need to free memory dynamically allocated by maapi\_xpath2kpath? ---
**Author:** ![mnovak](https://yyz2.discourse-cdn.com/flex010/user_avatar/dmap-community.ductus.global/mnovak/32/183_2.png) [@mnovak](https://dmap-community.ductus.global/u/mnovak)\ **Post date:** [November 29, 2017, 2:03pm UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666/9 "2017-11-29T14:03:53Z")
Hello, I have made simple Netconf example based on your scenario (not using maapi\_xpath2keypath). [https://cisco.box.com/s/2jw6b7gi1zjsos6dr63tsgyaghi75cna](https://cisco.box.com/s/2jw6b7gi1zjsos6dr63tsgyaghi75cna) Steps are written in the README ```nohighlight First shell: make clean all start Second shell: netconf-console --create-subscription=data_stream First shell: press 'n' Second shell: see notification text ``` Main problem in your code was probably that you didn’t add C\_NOEXIST to mark end of keypath and keys in keypath. Also len of keypath was not filled (is commented in your code). ```auto pKey->len = 4; pKey->v[4][0].type = C_NOEXISTS; ... pKey->v[0][0].type = C_UINT16; pKey->v[0][0].val.u16 = 0; pKey->v[0][1].type = C_NOEXISTS; ``` Please, can you check if it works in your environment. ---
**Author:** ![cohult](https://yyz2.discourse-cdn.com/flex010/user_avatar/dmap-community.ductus.global/cohult/32/221_2.png) [@cohult](https://dmap-community.ductus.global/u/cohult)\ **Post date:** [November 29, 2017, 9:48pm UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666/10 "2017-11-29T21:48:42Z")
\*.[quote=“jeongmin.na, post:8, topic:1666”] 2) Second, The key\_path value is lost after calling get\_key\_path (& key\_path). I did not know that dynamic memory was allocated. Do I need to free memory dynamically allocated by maapi\_xpath2kpath? [/quote] From the confd\_lib\_maapi man page for maapi\_xpath2kpath(): > The returned keypath is dynamically allocated, and may further contain dynamically allocated elements. The caller must free the allocated memory, easiest done by calling confd\_free\_hkeypath(). ---
**Author:** ![rdpravin1895](https://avatars.discourse-cdn.com/v4/letter/r/4da419/32.png) [@rdpravin1895](https://dmap-community.ductus.global/u/rdpravin1895)\ **Post date:** [April 17, 2018, 10:42am UTC](https://dmap-community.ductus.global/t/i-want-to-know-how-to-input-instance-identifier/1666/11 "2018-04-17T10:42:09Z")
I am also trying to do the similar. can you share me the C code for notification that you have written?