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Merge "res_pjsip_pubsub: Add ability to persist generator state information." into 13

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13.31
Kevin Harwell 5 years ago committed by Gerrit Code Review
parent 4cefb2f3cb 9720b29d8e
commit fa700acf39
3 changed files with 138 additions and 47 deletions
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23
include/asterisk/res_pjsip_pubsub.h
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@ -517,6 +517,29 @@ struct ast_datastore *ast_sip_subscription_get_datastore(struct ast_sip_subscrip
*/
void ast_sip_subscription_remove_datastore(struct ast_sip_subscription *subscription, const char *name);
/*!
* \since 13.31.0
* \since 16.8.0
* \since 17.2.0
* \brief Set persistence data for a subscription
*
* \param subscription The subscription to set persistence data on
* \param persistence_data The persistence data to set
*
* \note This steals the reference to persistence_data
*/
void ast_sip_subscription_set_persistence_data(struct ast_sip_subscription *subscription, struct ast_json *persistence_data);
/*!
* \since 13.31.0
* \since 16.8.0
* \since 17.2.0
* \brief Retrieve persistence data for a subscription
*
* \param subscription The subscription to retrieve persistence data from
*/
const struct ast_json *ast_sip_subscription_get_persistence_data(const struct ast_sip_subscription *subscription);
/*!
* \brief Register a subscription handler
*

75
res/res_pjsip_dialog_info_body_generator.c
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@ -61,51 +61,15 @@ static void *dialog_info_allocate_body(void *data)
return ast_sip_presence_xml_create_node(state_data->pool, NULL, "dialog-info");
}
static struct ast_datastore *dialog_info_xml_state_find_or_create(struct ast_sip_subscription *sub)
{
struct ast_datastore *datastore = ast_sip_subscription_get_datastore(sub, "dialog-info+xml");
if (datastore) {
return datastore;
}
datastore = ast_sip_subscription_alloc_datastore(&dialog_info_xml_datastore, "dialog-info+xml");
if (!datastore) {
return NULL;
}
datastore->data = ast_calloc(1, sizeof(struct dialog_info_xml_state));
if (!datastore->data || ast_sip_subscription_add_datastore(sub, datastore)) {
ao2_ref(datastore, -1);
return NULL;
}
return datastore;
}
static unsigned int dialog_info_xml_get_version(struct ast_sip_subscription *sub, unsigned int *version)
{
struct ast_datastore *datastore = dialog_info_xml_state_find_or_create(sub);
struct dialog_info_xml_state *state;
if (!datastore) {
return -1;
}
state = datastore->data;
*version = state->version++;
ao2_ref(datastore, -1);
return 0;
}
static int dialog_info_generate_body_content(void *body, void *data)
{
pj_xml_node *dialog_info = body, *dialog, *state;
struct ast_datastore *datastore;
struct dialog_info_xml_state *datastore_state;
struct ast_sip_exten_state_data *state_data = data;
char *local = ast_strdupa(state_data->local), *stripped, *statestring = NULL;
char *pidfstate = NULL, *pidfnote = NULL;
enum ast_sip_pidf_state local_state;
unsigned int version;
char version_str[32], sanitized[PJSIP_MAX_URL_SIZE];
struct ast_sip_endpoint *endpoint = NULL;
unsigned int notify_early_inuse_ringing = 0;
@ -114,9 +78,32 @@ static int dialog_info_generate_body_content(void *body, void *data)
return -1;
}
if (dialog_info_xml_get_version(state_data->sub, &version)) {
ast_log(LOG_WARNING, "dialog-info+xml version could not be retrieved from datastore\n");
return -1;
datastore = ast_sip_subscription_get_datastore(state_data->sub, "state_data->dialog-info+xml");
if (!datastore) {
const struct ast_json *version_json;
datastore = ast_sip_subscription_alloc_datastore(&dialog_info_xml_datastore, "dialog-info+xml");
if (!datastore) {
return -1;
}
datastore->data = ast_calloc(1, sizeof(struct dialog_info_xml_state));
if (!datastore->data || ast_sip_subscription_add_datastore(state_data->sub, datastore)) {
ao2_ref(datastore, -1);
return -1;
}
datastore_state = datastore->data;
version_json = ast_sip_subscription_get_persistence_data(state_data->sub);
if (version_json) {
datastore_state->version = ast_json_integer_get(version_json);
datastore_state->version++;
} else {
datastore_state->version = 0;
}
} else {
datastore_state = datastore->data;
datastore_state->version++;
}
stripped = ast_strip_quoted(local, "<", ">");
@ -131,9 +118,11 @@ static int dialog_info_generate_body_content(void *body, void *data)
ast_sip_presence_xml_create_attr(state_data->pool, dialog_info, "xmlns", "urn:ietf:params:xml:ns:dialog-info");
snprintf(version_str, sizeof(version_str), "%u", version);
snprintf(version_str, sizeof(version_str), "%u", datastore_state->version);
ast_sip_presence_xml_create_attr(state_data->pool, dialog_info, "version", version_str);
ast_sip_subscription_set_persistence_data(state_data->sub, ast_json_integer_create(datastore_state->version));
ast_sip_presence_xml_create_attr(state_data->pool, dialog_info, "state", "full");
ast_sip_presence_xml_create_attr(state_data->pool, dialog_info, "entity", sanitized);
@ -157,6 +146,8 @@ static int dialog_info_generate_body_content(void *body, void *data)
ast_sip_presence_xml_create_attr(state_data->pool, param, "pvalue", "no");
}
ao2_ref(datastore, -1);
return 0;
}

87
res/res_pjsip_pubsub.c
Unescape View File

@ -132,6 +132,11 @@
and therefore the subscription must be deleted after an asterisk restart.
</synopsis>
</configOption>
<configOption name="generator_data">
<synopsis>If set, contains persistence data for all generators of content
for the subscription.
</synopsis>
</configOption>
</configObject>
<configObject name="resource_list">
<synopsis>Resource list configuration parameters.</synopsis>
@ -389,6 +394,8 @@ struct subscription_persistence {
char contact_uri[PJSIP_MAX_URL_SIZE];
/*! Prune subscription on restart */
int prune_on_boot;
/*! Body generator specific persistence data */
struct ast_json *generator_data;
};
/*!
@ -490,6 +497,8 @@ struct ast_sip_subscription {
unsigned int full_state;
/*! URI associated with the subscription */
pjsip_sip_uri *uri;
/*! Data to be persisted with the subscription */
struct ast_json *persistence_data;
/*! Name of resource being subscribed to */
char resource[0];
};
@ -615,6 +624,7 @@ static void subscription_persistence_destroy(void *obj)
ast_free(persistence->endpoint);
ast_free(persistence->tag);
ast_json_unref(persistence->generator_data);
}
/*! \brief Allocator for subscription persistence */
@ -1220,6 +1230,7 @@ static void destroy_subscription(struct ast_sip_subscription *sub)
AST_VECTOR_FREE(&sub->children);
ao2_cleanup(sub->datastores);
ast_json_unref(sub->persistence_data);
ast_free(sub);
}
@ -1271,6 +1282,14 @@ static struct ast_sip_subscription *allocate_subscription(const struct ast_sip_s
pjsip_sip_uri_assign(tree->dlg->pool, sub->uri, contact_uri);
pj_strdup2(tree->dlg->pool, &sub->uri->user, resource);
/* If there is any persistence information available for this subscription that was persisted
* then make it available so that the NOTIFY has the correct state.
*/
if (tree->persistence && tree->persistence->generator_data) {
sub->persistence_data = ast_json_object_get(tree->persistence->generator_data, resource);
}
sub->handler = handler;
sub->subscription_state = PJSIP_EVSUB_STATE_ACTIVE;
sub->tree = ao2_bump(tree);
@ -1469,11 +1488,10 @@ static struct sip_subscription_tree *allocate_subscription_tree(struct ast_sip_e
static struct sip_subscription_tree *create_subscription_tree(const struct ast_sip_subscription_handler *handler,
struct ast_sip_endpoint *endpoint, pjsip_rx_data *rdata, const char *resource,
struct ast_sip_pubsub_body_generator *generator, struct resource_tree *tree,
pj_status_t *dlg_status)
pj_status_t *dlg_status, struct subscription_persistence *persistence)
{
struct sip_subscription_tree *sub_tree;
pjsip_dialog *dlg;
struct subscription_persistence *persistence;
sub_tree = allocate_subscription_tree(endpoint, rdata);
if (!sub_tree) {
@ -1514,6 +1532,9 @@ static struct sip_subscription_tree *create_subscription_tree(const struct ast_s
sub_tree->notification_batch_interval = tree->notification_batch_interval;
/* Persistence information needs to be available for all the subscriptions */
sub_tree->persistence = ao2_bump(persistence);
sub_tree->root = create_virtual_subscriptions(handler, resource, generator, sub_tree, tree->root);
if (AST_VECTOR_SIZE(&sub_tree->root->children) > 0) {
sub_tree->is_list = 1;
@ -1635,7 +1656,7 @@ static int sub_persistence_recreate(void *obj)
pj_status_t dlg_status;
sub_tree = create_subscription_tree(handler, endpoint, rdata, resource, generator,
&tree, &dlg_status);
&tree, &dlg_status, persistence);
if (!sub_tree) {
if (dlg_status != PJ_EEXISTS) {
ast_log(LOG_WARNING, "Failed recreating '%s' subscription: Could not create subscription tree.\n",
@ -1653,7 +1674,6 @@ static int sub_persistence_recreate(void *obj)
ind->sub_tree = ao2_bump(sub_tree);
ind->expires = expires_header->ivalue;
sub_tree->persistence = ao2_bump(persistence);
subscription_persistence_update(sub_tree, rdata, SUBSCRIPTION_PERSISTENCE_RECREATED);
if (ast_sip_push_task(sub_tree->serializer, initial_notify_task, ind)) {
/* Could not send initial subscribe NOTIFY */
@ -2710,6 +2730,28 @@ void ast_sip_publication_remove_datastore(struct ast_sip_publication *publicatio
ao2_callback(publication->datastores, OBJ_KEY | OBJ_UNLINK | OBJ_NODATA, NULL, (void *) name);
}
void ast_sip_subscription_set_persistence_data(struct ast_sip_subscription *subscription, struct ast_json *persistence_data)
{
ast_json_unref(subscription->persistence_data);
subscription->persistence_data = persistence_data;
if (subscription->tree->persistence) {
if (!subscription->tree->persistence->generator_data) {
subscription->tree->persistence->generator_data = ast_json_object_create();
if (!subscription->tree->persistence->generator_data) {
return;
}
}
ast_json_object_set(subscription->tree->persistence->generator_data, subscription->resource,
ast_json_ref(persistence_data));
}
}
const struct ast_json *ast_sip_subscription_get_persistence_data(const struct ast_sip_subscription *subscription)
{
return subscription->persistence_data;
}
AST_RWLIST_HEAD_STATIC(publish_handlers, ast_sip_publish_handler);
static int publication_hash_fn(const void *obj, const int flags)
@ -3076,7 +3118,7 @@ static pj_bool_t pubsub_on_rx_subscribe_request(pjsip_rx_data *rdata)
return PJ_TRUE;
}
sub_tree = create_subscription_tree(handler, endpoint, rdata, resource, generator, &tree, &dlg_status);
sub_tree = create_subscription_tree(handler, endpoint, rdata, resource, generator, &tree, &dlg_status, NULL);
if (!sub_tree) {
if (dlg_status != PJ_EEXISTS) {
pjsip_endpt_respond_stateless(ast_sip_get_pjsip_endpoint(), rdata, 500, NULL, NULL, NULL);
@ -4725,6 +4767,39 @@ static int persistence_tag_struct2str(const void *obj, const intptr_t *args, cha
return 0;
}
static int persistence_generator_data_str2struct(const struct aco_option *opt, struct ast_variable *var, void *obj)
{
struct subscription_persistence *persistence = obj;
struct ast_json_error error;
/* We tolerate a failure of the JSON to load and instead start fresh, since this field
* originates from the persistence code and not a user.
*/
persistence->generator_data = ast_json_load_string(var->value, &error);
return 0;
}
static int persistence_generator_data_struct2str(const void *obj, const intptr_t *args, char **buf)
{
const struct subscription_persistence *persistence = obj;
char *value;
if (!persistence->generator_data) {
return 0;
}
value = ast_json_dump_string(persistence->generator_data);
if (!value) {
return -1;
}
*buf = ast_strdup(value);
ast_json_free(value);
return 0;
}
static int persistence_expires_str2struct(const struct aco_option *opt, struct ast_variable *var, void *obj)
{
struct subscription_persistence *persistence = obj;
@ -5599,6 +5674,8 @@ static int load_module(void)
CHARFLDSET(struct subscription_persistence, contact_uri));
ast_sorcery_object_field_register(sorcery, "subscription_persistence", "prune_on_boot", "no", OPT_YESNO_T, 1,
FLDSET(struct subscription_persistence, prune_on_boot));
ast_sorcery_object_field_register_custom(sorcery, "subscription_persistence", "generator_data", "",
persistence_generator_data_str2struct, persistence_generator_data_struct2str, NULL, 0, 0);
if (apply_list_configuration(sorcery)) {
ast_sched_context_destroy(sched);

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