*
* Copyright(c) 2016 Intel Corporation. All rights reserved.
*
- * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ *of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
- * of the Software, and to permit persons to whom the Software is furnished to do
+ * of the Software, and to permit persons to whom the Software is furnished to
+ *do
* so, subject to the following conditions:
*
- * The above copyright notice and this permission notice shall be included in all
+ * The above copyright notice and this permission notice shall be included in
+ *all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* Volodymyr Mytnyk <volodymyrx.mytnyk@intel.com>
**/
-#include "common.h" /* auxiliary functions */
+#include "collectd.h"
-#include "utils_ovs.h" /* OVS helpers */
+#include "common.h" /* auxiliary functions */
+#include "utils_ovs.h" /* OVS helpers */
+
+#define OVS_EVENTS_IFACE_NAME_SIZE 128
+#define OVS_EVENTS_IFACE_UUID_SIZE 64
+#define OVS_EVENTS_EXT_IFACE_ID_SIZE 64
+#define OVS_EVENTS_EXT_VM_UUID_SIZE 64
#define OVS_EVENTS_PLUGIN "ovs_events"
-#define OVS_EVENTS_DEFAULT_OVS_DB_SERVER_URL "tcp:127.0.0.1:6640"
-#define OVS_EVENTS_CTX_LOCK for (int __i = ovs_events_ctx_lock(); __i != 0 ; \
- __i = ovs_events_ctx_unlock())
-#define OVS_EVENTS_CONFIG_ERROR(option) do { \
- ERROR(OVS_EVENTS_PLUGIN ": read '%s' config option failed", option); \
- goto failure; } while (0)
+#define OVS_EVENTS_CTX_LOCK \
+ for (int __i = ovs_events_ctx_lock(); __i != 0; __i = ovs_events_ctx_unlock())
/* Link status type */
-enum ovs_events_link_status_e {DOWN, UP, UNKNOWN};
+enum ovs_events_link_status_e { DOWN, UP };
typedef enum ovs_events_link_status_e ovs_events_link_status_t;
/* Interface info */
-struct ovs_events_interface_info_s {
- char *name; /* interface name */
- ovs_events_link_status_t link_status; /* link status */
- struct ovs_events_interface_info_s *next; /* next interface info */
+struct ovs_events_iface_info_s {
+ char name[OVS_EVENTS_IFACE_NAME_SIZE]; /* interface name */
+ char uuid[OVS_EVENTS_IFACE_UUID_SIZE]; /* interface UUID */
+ char ext_iface_id[OVS_EVENTS_EXT_IFACE_ID_SIZE]; /* external interface id */
+ char ext_vm_uuid[OVS_EVENTS_EXT_VM_UUID_SIZE]; /* external VM UUID */
+ ovs_events_link_status_t link_status; /* interface link status */
+ struct ovs_events_iface_info_s *next; /* next interface info */
+};
+typedef struct ovs_events_iface_info_s ovs_events_iface_info_t;
+
+/* Interface list */
+struct ovs_events_iface_list_s {
+ char name[OVS_EVENTS_IFACE_NAME_SIZE]; /* interface name */
+ struct ovs_events_iface_list_s *next; /* next interface info */
};
-typedef struct ovs_events_interface_info_s ovs_events_interface_info_t;
+typedef struct ovs_events_iface_list_s ovs_events_iface_list_t;
/* OVS events configuration data */
struct ovs_events_config_s {
- _Bool send_notification; /* sent notification to collectd? */
- char *ovs_db_server_url; /* OVS DB server URL */
+ _Bool send_notification; /* sent notification to collectd? */
+ char ovs_db_node[OVS_DB_ADDR_NODE_SIZE]; /* OVS DB node */
+ char ovs_db_serv[OVS_DB_ADDR_SERVICE_SIZE]; /* OVS DB service */
+ char ovs_db_unix[OVS_DB_ADDR_UNIX_SIZE]; /* OVS DB unix socket path */
+ ovs_events_iface_list_t *ifaces; /* interface info */
};
typedef struct ovs_events_config_s ovs_events_config_t;
/* OVS events context type */
struct ovs_events_ctx_s {
- pthread_mutex_t mutex; /* mutex to lock the context */
- pthread_mutexattr_t mutex_attr; /* context mutex attribute */
- ovs_db_t *ovs_db; /* pointer to OVS DB instance */
- ovs_events_config_t config; /* plugin config */
- ovs_events_interface_info_t *ifaces; /* interface info */
+ pthread_mutex_t mutex; /* mutex to lock the context */
+ ovs_db_t *ovs_db; /* pointer to OVS DB instance */
+ ovs_events_config_t config; /* plugin config */
+ char *ovs_db_select_params; /* OVS DB select parameter request */
+ _Bool is_db_available; /* specify whether OVS DB is available */
};
typedef struct ovs_events_ctx_s ovs_events_ctx_t;
* Private variables
*/
static ovs_events_ctx_t ovs_events_ctx = {
- .mutex = PTHREAD_MUTEX_INITIALIZER,
- .config = {
- .send_notification = 0, /* do not send notification */
- .ovs_db_server_url = NULL}, /* use default OVS DB URL */
- .ovs_db = NULL,
- .ifaces = NULL};
+ .mutex = PTHREAD_MUTEX_INITIALIZER,
+ .config = {.send_notification = 1, /* send notification by default */
+ .ovs_db_node = "localhost", /* use default OVS DB node */
+ .ovs_db_serv = "6640"} /* use default OVS DB service */
+};
+
+/* Forward declaration */
+static int ovs_events_plugin_read(user_data_t *u);
/* This function is used only by "OVS_EVENTS_CTX_LOCK" define (see above).
* It always returns 1 when context is locked.
*/
-static inline int
-ovs_events_ctx_lock()
-{
+static int ovs_events_ctx_lock() {
pthread_mutex_lock(&ovs_events_ctx.mutex);
- return (1);
+ return 1;
}
/* This function is used only by "OVS_EVENTS_CTX_LOCK" define (see above).
* It always returns 0 when context is unlocked.
*/
-static inline int
-ovs_events_ctx_unlock()
-{
+static int ovs_events_ctx_unlock() {
pthread_mutex_unlock(&ovs_events_ctx.mutex);
- return (0);
-}
-
-/* Update link status in OVS events context (cache) */
-static void
-ovs_events_link_status_update(const char *name,
- ovs_events_link_status_t status)
-{
- OVS_EVENTS_CTX_LOCK {
- for (ovs_events_interface_info_t *iface = ovs_events_ctx.ifaces; iface;
- iface = iface->next)
- if (strcmp(iface->name, name) == 0)
- iface->link_status = status;
- }
+ return 0;
}
/* Check if given interface name exists in configuration file. It
* returns 1 if exists otherwise 0. If no interfaces are configured,
- * 1 is returned
+ * -1 is returned
*/
-static int
-ovs_events_config_iface_exists(const char *ifname)
-{
- int rc = 0;
- OVS_EVENTS_CTX_LOCK {
- if (!(rc = (ovs_events_ctx.ifaces == NULL))) {
- for (ovs_events_interface_info_t *iface = ovs_events_ctx.ifaces; iface;
- iface = iface->next)
- if (rc = (strcmp(ifname, iface->name) == 0))
- break;
+static int ovs_events_config_iface_exists(const char *ifname) {
+ if (ovs_events_ctx.config.ifaces == NULL)
+ return -1;
+
+ /* check if given interface exists */
+ for (ovs_events_iface_list_t *iface = ovs_events_ctx.config.ifaces; iface;
+ iface = iface->next)
+ if (strcmp(ifname, iface->name) == 0)
+ return 1;
+
+ return 0;
+}
+
+/* Get OVS DB select parameter request based on rfc7047,
+ * "Transact" & "Select" section
+ */
+static char *ovs_events_get_select_params() {
+ size_t buff_size = 0;
+ size_t buff_off = 0;
+ char *opt_buff = NULL;
+ static const char params_fmt[] = "[\"Open_vSwitch\"%s]";
+ static const char option_fmt[] =
+ ",{\"op\":\"select\",\"table\":\"Interface\","
+ "\"where\":[[\"name\",\"==\",\"%s\"]],"
+ "\"columns\":[\"link_state\",\"external_ids\","
+ "\"name\",\"_uuid\"]}";
+ static const char default_opt[] =
+ ",{\"op\":\"select\",\"table\":\"Interface\","
+ "\"where\":[],\"columns\":[\"link_state\","
+ "\"external_ids\",\"name\",\"_uuid\"]}";
+ /* setup OVS DB interface condition */
+ for (ovs_events_iface_list_t *iface = ovs_events_ctx.config.ifaces; iface;
+ iface = iface->next) {
+ /* allocate new buffer (format size + ifname len is good enough) */
+ buff_size += sizeof(option_fmt) + strlen(iface->name);
+ char *new_buff = realloc(opt_buff, buff_size);
+ if (new_buff == NULL) {
+ sfree(opt_buff);
+ return NULL;
+ }
+ opt_buff = new_buff;
+ int ret = snprintf(opt_buff + buff_off, buff_size - buff_off, option_fmt,
+ iface->name);
+ if (ret < 0) {
+ sfree(opt_buff);
+ return NULL;
}
+ buff_off += ret;
}
- return rc;
+ /* if no interfaces are configured, use default params */
+ if (opt_buff == NULL)
+ if ((opt_buff = strdup(default_opt)) == NULL)
+ return NULL;
+
+ /* allocate memory for OVS DB select params */
+ size_t params_size = sizeof(params_fmt) + strlen(opt_buff);
+ char *params_buff = calloc(1, params_size);
+ if (params_buff == NULL) {
+ sfree(opt_buff);
+ return NULL;
+ }
+
+ /* create OVS DB select params */
+ if (snprintf(params_buff, params_size, params_fmt, opt_buff) < 0)
+ sfree(params_buff);
+
+ sfree(opt_buff);
+ return params_buff;
}
/* Release memory allocated for configuration data */
-static void
-ovs_events_config_free()
-{
- ovs_events_interface_info_t *del_iface = NULL;
- OVS_EVENTS_CTX_LOCK {
- sfree(ovs_events_ctx.config.ovs_db_server_url);
- while (ovs_events_ctx.ifaces) {
- del_iface = ovs_events_ctx.ifaces;
- ovs_events_ctx.ifaces = ovs_events_ctx.ifaces->next;
- free(del_iface->name);
- free(del_iface);
+static void ovs_events_config_free() {
+ ovs_events_iface_list_t *del_iface = NULL;
+ sfree(ovs_events_ctx.ovs_db_select_params);
+ while (ovs_events_ctx.config.ifaces) {
+ del_iface = ovs_events_ctx.config.ifaces;
+ ovs_events_ctx.config.ifaces = ovs_events_ctx.config.ifaces->next;
+ sfree(del_iface);
+ }
+}
+
+/* Parse/process "Interfaces" configuration option. Returns 0 if success
+ * otherwise -1 (error)
+ */
+static int ovs_events_config_get_interfaces(const oconfig_item_t *ci) {
+ for (int j = 0; j < ci->values_num; j++) {
+ /* check interface name type */
+ if (ci->values[j].type != OCONFIG_TYPE_STRING) {
+ ERROR(OVS_EVENTS_PLUGIN ": given interface name is not a string [idx=%d]",
+ j);
+ return -1;
+ }
+ /* allocate memory for configured interface */
+ ovs_events_iface_list_t *new_iface = calloc(1, sizeof(*new_iface));
+ if (new_iface == NULL) {
+ ERROR(OVS_EVENTS_PLUGIN ": calloc () copy interface name fail");
+ return -1;
+ } else {
+ /* store interface name */
+ sstrncpy(new_iface->name, ci->values[j].value.string,
+ sizeof(new_iface->name));
+ new_iface->next = ovs_events_ctx.config.ifaces;
+ ovs_events_ctx.config.ifaces = new_iface;
+ DEBUG(OVS_EVENTS_PLUGIN ": found monitored interface \"%s\"",
+ new_iface->name);
}
}
+ return 0;
}
/* Parse plugin configuration file and store the config
* in allocated memory. Returns negative value in case of error.
*/
-static int
-ovs_events_plugin_config(oconfig_item_t *ci)
-{
- ovs_events_interface_info_t *new_iface;
- char *if_name;
-
+static int ovs_events_plugin_config(oconfig_item_t *ci) {
+ _Bool dispatch_values = 0;
for (int i = 0; i < ci->children_num; i++) {
oconfig_item_t *child = ci->children + i;
if (strcasecmp("SendNotification", child->key) == 0) {
if (cf_util_get_boolean(child,
- &ovs_events_ctx.config.send_notification) < 0)
- OVS_EVENTS_CONFIG_ERROR(child->key);
- } else if (strcasecmp("OvsDbServerUrl", child->key) == 0) {
- if (cf_util_get_string(child,
- &ovs_events_ctx.config.ovs_db_server_url) < 0)
- OVS_EVENTS_CONFIG_ERROR(child->key);
+ &ovs_events_ctx.config.send_notification) != 0) {
+ ovs_events_config_free();
+ return -1;
+ }
+ } else if (strcasecmp("Address", child->key) == 0) {
+ if (cf_util_get_string_buffer(
+ child, ovs_events_ctx.config.ovs_db_node,
+ sizeof(ovs_events_ctx.config.ovs_db_node)) != 0) {
+ ovs_events_config_free();
+ return -1;
+ }
+ } else if (strcasecmp("Port", child->key) == 0) {
+ char *service = NULL;
+ if (cf_util_get_service(child, &service) != 0) {
+ ovs_events_config_free();
+ return -1;
+ }
+ sstrncpy(ovs_events_ctx.config.ovs_db_serv, service,
+ sizeof(ovs_events_ctx.config.ovs_db_serv));
+ sfree(service);
+ } else if (strcasecmp("Socket", child->key) == 0) {
+ if (cf_util_get_string_buffer(
+ child, ovs_events_ctx.config.ovs_db_unix,
+ sizeof(ovs_events_ctx.config.ovs_db_unix)) != 0) {
+ ovs_events_config_free();
+ return -1;
+ }
} else if (strcasecmp("Interfaces", child->key) == 0) {
- for (int j = 0; j < child->values_num; j++) {
- /* check value type */
- if (child->values[j].type != OCONFIG_TYPE_STRING) {
- ERROR(OVS_EVENTS_PLUGIN
- ": given interface name is not a string [idx=%d]", j);
- goto failure;
- }
- /* get value */
- if ((if_name = strdup(child->values[j].value.string)) == NULL) {
- ERROR(OVS_EVENTS_PLUGIN " strdup() copy interface name fail");
- goto failure;
- }
- if ((new_iface = malloc(sizeof(*new_iface))) == NULL) {
- ERROR(OVS_EVENTS_PLUGIN ": malloc () copy interface name fail");
- goto failure;
- } else {
- /* store interface name */
- new_iface->name = if_name;
- new_iface->link_status = UNKNOWN;
- new_iface->next = ovs_events_ctx.ifaces;
- ovs_events_ctx.ifaces = new_iface;
- DEBUG(OVS_EVENTS_PLUGIN ": found monitored interface \"%s\"",
- if_name);
- }
+ if (ovs_events_config_get_interfaces(child) != 0) {
+ ovs_events_config_free();
+ return -1;
+ }
+ } else if (strcasecmp("DispatchValues", child->key) == 0) {
+ if (cf_util_get_boolean(child, &dispatch_values) != 0) {
+ ovs_events_config_free();
+ return -1;
}
} else {
- ERROR(OVS_EVENTS_PLUGIN ": option '%s' is not allowed here",
- child->key);
- goto failure;
+ ERROR(OVS_EVENTS_PLUGIN ": option '%s' is not allowed here", child->key);
+ ovs_events_config_free();
+ return -1;
}
}
- return (0);
+ /* Check and warn about invalid configuration */
+ if (!ovs_events_ctx.config.send_notification && !dispatch_values) {
+ WARNING(OVS_EVENTS_PLUGIN
+ ": send notification and dispatch values "
+ "options are disabled. No information will be dispatched by the "
+ "plugin. Please check your configuration");
+ }
+ /* Dispatch link status values if configured */
+ if (dispatch_values)
+ return plugin_register_complex_read(NULL, OVS_EVENTS_PLUGIN,
+ ovs_events_plugin_read, 0, NULL);
-failure:
- ovs_events_config_free();
- return (-1);
+ return 0;
}
/* Dispatch OVS interface link status event to collectd */
-static int
-ovs_events_dispatch_notification(const char *link_name,
- ovs_events_link_status_t link_status)
-{
+static void
+ovs_events_dispatch_notification(const ovs_events_iface_info_t *ifinfo) {
const char *msg_link_status = NULL;
- notification_t n = {NOTIF_FAILURE, cdtime(), "", "", OVS_EVENTS_PLUGIN,
- "", "", "", NULL};
+ notification_t n = {
+ NOTIF_FAILURE, cdtime(), "", "", OVS_EVENTS_PLUGIN, "", "", "", NULL};
/* convert link status to message string */
- switch (link_status) {
+ switch (ifinfo->link_status) {
case UP:
msg_link_status = "UP";
n.severity = NOTIF_OKAY;
n.severity = NOTIF_WARNING;
break;
default:
- msg_link_status = "UNKNOWN";;
- break;
+ ERROR(OVS_EVENTS_PLUGIN ": unknown interface link status");
+ return;
+ }
+
+ /* add interface metadata to the notification */
+ if (plugin_notification_meta_add_string(&n, "uuid", ifinfo->uuid) < 0) {
+ ERROR(OVS_EVENTS_PLUGIN ": add interface uuid meta data failed");
+ return;
+ }
+
+ if (strlen(ifinfo->ext_vm_uuid) > 0) {
+ if (plugin_notification_meta_add_string(&n, "vm-uuid",
+ ifinfo->ext_vm_uuid) < 0) {
+ ERROR(OVS_EVENTS_PLUGIN ": add interface vm-uuid meta data failed");
+ return;
+ }
+ }
+
+ if (strlen(ifinfo->ext_iface_id) > 0) {
+ if (plugin_notification_meta_add_string(&n, "iface-id",
+ ifinfo->ext_iface_id) < 0) {
+ ERROR(OVS_EVENTS_PLUGIN ": add interface iface-id meta data failed");
+ return;
+ }
}
/* fill the notification data */
- ssnprintf(n.message, sizeof(n.message),
- "link state of \"%s\" interface has been changed to \"%s\"",
- link_name, msg_link_status);
+ snprintf(n.message, sizeof(n.message),
+ "link state of \"%s\" interface has been changed to \"%s\"",
+ ifinfo->name, msg_link_status);
sstrncpy(n.host, hostname_g, sizeof(n.host));
- sstrncpy(n.plugin_instance, link_name, sizeof(n.plugin_instance));
+ sstrncpy(n.plugin_instance, ifinfo->name, sizeof(n.plugin_instance));
sstrncpy(n.type, "gauge", sizeof(n.type));
sstrncpy(n.type_instance, "link_status", sizeof(n.type_instance));
- return plugin_dispatch_notification(&n);
+ plugin_dispatch_notification(&n);
}
/* Dispatch OVS interface link status value to collectd */
static void
-ovs_events_link_status_submit(const char *link_name,
- ovs_events_link_status_t link_status)
-{
- value_t values[1];
+ovs_events_link_status_submit(const ovs_events_iface_info_t *ifinfo) {
value_list_t vl = VALUE_LIST_INIT;
+ meta_data_t *meta = NULL;
+
+ /* add interface metadata to the submit value */
+ if ((meta = meta_data_create()) != NULL) {
+ if (meta_data_add_string(meta, "uuid", ifinfo->uuid) < 0)
+ ERROR(OVS_EVENTS_PLUGIN ": add interface uuid meta data failed");
+
+ if (strlen(ifinfo->ext_vm_uuid) > 0)
+ if (meta_data_add_string(meta, "vm-uuid", ifinfo->ext_vm_uuid) < 0)
+ ERROR(OVS_EVENTS_PLUGIN ": add interface vm-uuid meta data failed");
+
+ if (strlen(ifinfo->ext_iface_id) > 0)
+ if (meta_data_add_string(meta, "iface-id", ifinfo->ext_iface_id) < 0)
+ ERROR(OVS_EVENTS_PLUGIN ": add interface iface-id meta data failed");
+ vl.meta = meta;
+ } else
+ ERROR(OVS_EVENTS_PLUGIN ": create metadata failed");
- values[0].gauge = (gauge_t) link_status;
vl.time = cdtime();
- vl.values = values;
- vl.values_len = STATIC_ARRAY_SIZE(values);
- sstrncpy(vl.host, hostname_g, sizeof(vl.host));
+ vl.values = &(value_t){.gauge = (gauge_t)ifinfo->link_status};
+ vl.values_len = 1;
sstrncpy(vl.plugin, OVS_EVENTS_PLUGIN, sizeof(vl.plugin));
- sstrncpy(vl.plugin_instance, link_name, sizeof(vl.plugin_instance));
+ sstrncpy(vl.plugin_instance, ifinfo->name, sizeof(vl.plugin_instance));
sstrncpy(vl.type, "gauge", sizeof(vl.type));
sstrncpy(vl.type_instance, "link_status", sizeof(vl.type_instance));
plugin_dispatch_values(&vl);
+ meta_data_destroy(meta);
}
/* Dispatch OVS DB terminate connection event to collectd */
-static void
-ovs_events_dispatch_terminate_notification(const char *msg)
-{
- notification_t n = {NOTIF_FAILURE, cdtime(), "", "", OVS_EVENTS_PLUGIN,
- "", "", "", NULL};
- ssnprintf(n.message, sizeof(n.message), msg);
+static void ovs_events_dispatch_terminate_notification(const char *msg) {
+ notification_t n = {
+ NOTIF_FAILURE, cdtime(), "", "", OVS_EVENTS_PLUGIN, "", "", "", NULL};
+ sstrncpy(n.message, msg, sizeof(n.message));
sstrncpy(n.host, hostname_g, sizeof(n.host));
plugin_dispatch_notification(&n);
}
+/* Get OVS DB interface information and stores it into
+ * ovs_events_iface_info_t structure */
+static int ovs_events_get_iface_info(yajl_val jobject,
+ ovs_events_iface_info_t *ifinfo) {
+ yajl_val jexternal_ids = NULL;
+ yajl_val jvalue = NULL;
+ yajl_val juuid = NULL;
+ const char *state = NULL;
+
+ /* check YAJL type */
+ if (!YAJL_IS_OBJECT(jobject))
+ return -1;
+
+ /* zero the interface info structure */
+ memset(ifinfo, 0, sizeof(*ifinfo));
+
+ /* try to find external_ids, name and link_state fields */
+ jexternal_ids = ovs_utils_get_value_by_key(jobject, "external_ids");
+ if (jexternal_ids == NULL || ifinfo == NULL)
+ return -1;
+
+ /* get iface-id from external_ids field */
+ jvalue = ovs_utils_get_map_value(jexternal_ids, "iface-id");
+ if (jvalue != NULL && YAJL_IS_STRING(jvalue))
+ sstrncpy(ifinfo->ext_iface_id, YAJL_GET_STRING(jvalue),
+ sizeof(ifinfo->ext_iface_id));
+
+ /* get vm-uuid from external_ids field */
+ jvalue = ovs_utils_get_map_value(jexternal_ids, "vm-uuid");
+ if (jvalue != NULL && YAJL_IS_STRING(jvalue))
+ sstrncpy(ifinfo->ext_vm_uuid, YAJL_GET_STRING(jvalue),
+ sizeof(ifinfo->ext_vm_uuid));
+
+ /* get interface uuid */
+ jvalue = ovs_utils_get_value_by_key(jobject, "_uuid");
+ if (jvalue == NULL || !YAJL_IS_ARRAY(jvalue) ||
+ YAJL_GET_ARRAY(jvalue)->len != 2)
+ return -1;
+ juuid = YAJL_GET_ARRAY(jvalue)->values[1];
+ if (juuid == NULL || !YAJL_IS_STRING(juuid))
+ return -1;
+ sstrncpy(ifinfo->uuid, YAJL_GET_STRING(juuid), sizeof(ifinfo->uuid));
+
+ /* get interface name */
+ jvalue = ovs_utils_get_value_by_key(jobject, "name");
+ if (jvalue == NULL || !YAJL_IS_STRING(jvalue))
+ return -1;
+ sstrncpy(ifinfo->name, YAJL_GET_STRING(jvalue), sizeof(ifinfo->name));
+
+ /* get OVS DB interface link status */
+ jvalue = ovs_utils_get_value_by_key(jobject, "link_state");
+ if (jvalue != NULL && ((state = YAJL_GET_STRING(jvalue)) != NULL)) {
+ /* convert OVS table link state to link status */
+ if (strcmp(state, "up") == 0)
+ ifinfo->link_status = UP;
+ else if (strcmp(state, "down") == 0)
+ ifinfo->link_status = DOWN;
+ }
+ return 0;
+}
+
/* Process OVS DB update table event. It handles link status update event(s)
* and dispatches the value(s) to collectd if interface name matches one of
* interfaces specified in configuration file.
*/
-static void
-ovs_events_table_update_cb(yajl_val jupdates)
-{
+static void ovs_events_table_update_cb(yajl_val jupdates) {
yajl_val jnew_val = NULL;
yajl_val jupdate = NULL;
yajl_val jrow_update = NULL;
- yajl_val jlink_name = NULL;
- yajl_val jlink_state = NULL;
- const char *link_name = NULL;
- const char *link_state = NULL;
- ovs_events_link_status_t link_status = UNKNOWN;
+ ovs_events_iface_info_t ifinfo;
/* JSON "Interface" table update example:
* ---------------------------------
return;
}
/* go through all row updates */
- for (int row_index = 0; row_index < YAJL_GET_OBJECT(jupdate)->len;
+ for (size_t row_index = 0; row_index < YAJL_GET_OBJECT(jupdate)->len;
++row_index) {
jrow_update = YAJL_GET_OBJECT(jupdate)->values[row_index];
ERROR(OVS_EVENTS_PLUGIN ": unexpected row update received");
return;
}
- /* get link status update */
- jlink_name = ovs_utils_get_value_by_key(jnew_val, "name");
- jlink_state = ovs_utils_get_value_by_key(jnew_val, "link_state");
- if (jlink_name && jlink_state) {
- link_name = YAJL_GET_STRING(jlink_name);
- if (link_name && ovs_events_config_iface_exists(link_name)) {
- /* convert OVS table link state to link status */
- if (YAJL_IS_STRING(jlink_state)) {
- link_state = YAJL_GET_STRING(jlink_state);
- if (strcmp(link_state, "up") == 0)
- link_status = UP;
- else if (strcmp(link_state, "down") == 0)
- link_status = DOWN;
- }
- /* update link status in cache */
- ovs_events_link_status_update(link_name, link_status);
- if (ovs_events_ctx.config.send_notification)
- /* dispatch notification */
- ovs_events_dispatch_notification(link_name, link_status);
- }
+ /* get OVS DB interface information */
+ if (ovs_events_get_iface_info(jnew_val, &ifinfo) < 0) {
+ ERROR(OVS_EVENTS_PLUGIN
+ " :unexpected interface information data received");
+ return;
+ }
+ if (ovs_events_config_iface_exists(ifinfo.name) != 0) {
+ DEBUG("name=%s, uuid=%s, ext_iface_id=%s, ext_vm_uuid=%s", ifinfo.name,
+ ifinfo.uuid, ifinfo.ext_iface_id, ifinfo.ext_vm_uuid);
+ /* dispatch notification */
+ ovs_events_dispatch_notification(&ifinfo);
}
}
}
-/* Process OVS DB result table callback. It handles init link status value
- * and dispatches the value(s) to collectd. The logic to handle init status
- * is same as 'ovs_events_table_update_cb'.
+/* OVS DB reply callback. It parses reply, receives
+ * interface information and dispatches the info to
+ * collectd
*/
-static void
-ovs_events_table_result_cb(yajl_val jresult, yajl_val jerror)
-{
- (void)jerror;
- /* jerror is not used as it is the same all the time
- (rfc7047, "Monitor" section, return value) */
- ovs_events_table_update_cb(jresult);
+static void ovs_events_poll_result_cb(yajl_val jresult, yajl_val jerror) {
+ yajl_val *jvalues = NULL;
+ yajl_val jvalue = NULL;
+ ovs_events_iface_info_t ifinfo;
+
+ if (!YAJL_IS_NULL(jerror)) {
+ ERROR(OVS_EVENTS_PLUGIN "error received by OVS DB server");
+ return;
+ }
+
+ /* result should be an array */
+ if (!YAJL_IS_ARRAY(jresult)) {
+ ERROR(OVS_EVENTS_PLUGIN "invalid data (array is expected)");
+ return;
+ }
+
+ /* go through all rows and get interface info */
+ jvalues = YAJL_GET_ARRAY(jresult)->values;
+ for (size_t i = 0; i < YAJL_GET_ARRAY(jresult)->len; i++) {
+ jvalue = ovs_utils_get_value_by_key(jvalues[i], "rows");
+ if (jvalue == NULL || !YAJL_IS_ARRAY(jvalue)) {
+ ERROR(OVS_EVENTS_PLUGIN "invalid data (array of rows is expected)");
+ return;
+ }
+ /* get interfaces info */
+ for (size_t j = 0; j < YAJL_GET_ARRAY(jvalue)->len; j++) {
+ if (ovs_events_get_iface_info(YAJL_GET_ARRAY(jvalue)->values[j],
+ &ifinfo) < 0) {
+ ERROR(OVS_EVENTS_PLUGIN
+ "unexpected interface information data received");
+ return;
+ }
+ DEBUG("name=%s, uuid=%s, ext_iface_id=%s, ext_vm_uuid=%s", ifinfo.name,
+ ifinfo.uuid, ifinfo.ext_iface_id, ifinfo.ext_vm_uuid);
+ ovs_events_link_status_submit(&ifinfo);
+ }
+ }
}
/* Setup OVS DB table callback. It subscribes to OVS DB 'Interface' table
* to receive link status event(s).
*/
-static void
-ovs_events_conn_initialize(ovs_db_t *pdb)
-{
- int ret = 0;
+static void ovs_events_conn_initialize(ovs_db_t *pdb) {
const char tb_name[] = "Interface";
- const char *columns[] = {"name", "link_state", NULL};
-
- /* register the update callback */
- ret = ovs_db_table_cb_register(pdb, tb_name, columns,
- ovs_events_table_update_cb,
- ovs_events_table_result_cb,
- OVS_DB_TABLE_CB_FLAG_MODIFY |
- OVS_DB_TABLE_CB_FLAG_INITIAL);
- if (ret < 0) {
- ERROR(OVS_EVENTS_PLUGIN ": register OVS DB update callback failed");
- return;
+ const char *columns[] = {"_uuid", "external_ids", "name", "link_state", NULL};
+
+ /* register update link status event if needed */
+ if (ovs_events_ctx.config.send_notification) {
+ int ret = ovs_db_table_cb_register(pdb, tb_name, columns,
+ ovs_events_table_update_cb, NULL,
+ OVS_DB_TABLE_CB_FLAG_MODIFY);
+ if (ret < 0) {
+ ERROR(OVS_EVENTS_PLUGIN ": register OVS DB update callback failed");
+ return;
+ }
}
-
- DEBUG(OVS_EVENTS_PLUGIN ": OVS DB has been initialized");
+ OVS_EVENTS_CTX_LOCK { ovs_events_ctx.is_db_available = 1; }
+ DEBUG(OVS_EVENTS_PLUGIN ": OVS DB connection has been initialized");
}
/* OVS DB terminate connection notification callback */
-static void
-ovs_events_conn_terminate()
-{
+static void ovs_events_conn_terminate() {
const char msg[] = "OVS DB connection has been lost";
if (ovs_events_ctx.config.send_notification)
ovs_events_dispatch_terminate_notification(msg);
WARNING(OVS_EVENTS_PLUGIN ": %s", msg);
- OVS_EVENTS_CTX_LOCK {
- /* update link status to UNKNOWN */
- for (ovs_events_interface_info_t *iface = ovs_events_ctx.ifaces; iface;
- iface = iface->next)
- ovs_events_link_status_update(iface->name, UNKNOWN);
- }
+ OVS_EVENTS_CTX_LOCK { ovs_events_ctx.is_db_available = 0; }
}
/* Read OVS DB interface link status callback */
-static int
-ovs_events_plugin_read(user_data_t *ud)
-{
- (void)ud; /* unused argument */
- OVS_EVENTS_CTX_LOCK {
- for (ovs_events_interface_info_t *iface = ovs_events_ctx.ifaces; iface;
- iface = iface->next)
- /* submit link status value */
- ovs_events_link_status_submit(iface->name, iface->link_status);
- }
- return (0);
+static int ovs_events_plugin_read(__attribute__((unused)) user_data_t *u) {
+ _Bool is_connected = 0;
+ OVS_EVENTS_CTX_LOCK { is_connected = ovs_events_ctx.is_db_available; }
+ if (is_connected)
+ if (ovs_db_send_request(ovs_events_ctx.ovs_db, "transact",
+ ovs_events_ctx.ovs_db_select_params,
+ ovs_events_poll_result_cb) < 0) {
+ ERROR(OVS_EVENTS_PLUGIN ": get interface info failed");
+ return -1;
+ }
+ return 0;
}
/* Initialize OVS plugin */
-static int
-ovs_events_plugin_init(void)
-{
+static int ovs_events_plugin_init(void) {
ovs_db_t *ovs_db = NULL;
ovs_db_callback_t cb = {.post_conn_init = ovs_events_conn_initialize,
.post_conn_terminate = ovs_events_conn_terminate};
- /* Initialize the context mutex */
- if (pthread_mutexattr_init(&ovs_events_ctx.mutex_attr) != 0) {
- ERROR(OVS_EVENTS_PLUGIN ": init context mutex attribute failed");
- return (-1);
- }
- pthread_mutexattr_settype(&ovs_events_ctx.mutex_attr,
- PTHREAD_MUTEX_RECURSIVE);
- if (pthread_mutex_init(&ovs_events_ctx.mutex, &ovs_events_ctx.mutex_attr) !=
- 0) {
- ERROR(OVS_EVENTS_PLUGIN ": init context mutex failed");
+ DEBUG(OVS_EVENTS_PLUGIN ": OVS DB address=%s, service=%s, unix=%s",
+ ovs_events_ctx.config.ovs_db_node, ovs_events_ctx.config.ovs_db_serv,
+ ovs_events_ctx.config.ovs_db_unix);
+
+ /* generate OVS DB select condition based on list on configured interfaces */
+ ovs_events_ctx.ovs_db_select_params = ovs_events_get_select_params();
+ if (ovs_events_ctx.ovs_db_select_params == NULL) {
+ ERROR(OVS_EVENTS_PLUGIN ": fail to get OVS DB select condition");
goto ovs_events_failure;
}
- /* set default OVS DB url */
- if (ovs_events_ctx.config.ovs_db_server_url == NULL)
- if ((ovs_events_ctx.config.ovs_db_server_url =
- strdup(OVS_EVENTS_DEFAULT_OVS_DB_SERVER_URL)) == NULL) {
- ERROR(OVS_EVENTS_PLUGIN ": fail to set default OVS DB URL");
- goto ovs_events_failure;
- }
- DEBUG(OVS_EVENTS_PLUGIN ": OVS DB url = %s",
- ovs_events_ctx.config.ovs_db_server_url);
-
/* initialize OVS DB */
- ovs_db = ovs_db_init(ovs_events_ctx.config.ovs_db_server_url, &cb);
+ ovs_db = ovs_db_init(ovs_events_ctx.config.ovs_db_node,
+ ovs_events_ctx.config.ovs_db_serv,
+ ovs_events_ctx.config.ovs_db_unix, &cb);
if (ovs_db == NULL) {
ERROR(OVS_EVENTS_PLUGIN ": fail to connect to OVS DB server");
goto ovs_events_failure;
}
/* store OVS DB handler */
- OVS_EVENTS_CTX_LOCK {
- ovs_events_ctx.ovs_db = ovs_db;
- }
+ OVS_EVENTS_CTX_LOCK { ovs_events_ctx.ovs_db = ovs_db; }
DEBUG(OVS_EVENTS_PLUGIN ": plugin has been initialized");
- return (0);
+ return 0;
ovs_events_failure:
ERROR(OVS_EVENTS_PLUGIN ": plugin initialize failed");
/* release allocated memory */
ovs_events_config_free();
- /* destroy context mutex */
- pthread_mutexattr_destroy(&ovs_events_ctx.mutex_attr);
- pthread_mutex_destroy(&ovs_events_ctx.mutex);
- return (-1);
+ return -1;
}
/* Shutdown OVS plugin */
-static int
-ovs_events_plugin_shutdown(void)
-{
- /* release memory allocated for config */
- ovs_events_config_free();
-
+static int ovs_events_plugin_shutdown(void) {
/* destroy OVS DB */
if (ovs_db_destroy(ovs_events_ctx.ovs_db))
ERROR(OVS_EVENTS_PLUGIN ": OVSDB object destroy failed");
- /* destroy context mutex */
- pthread_mutexattr_destroy(&ovs_events_ctx.mutex_attr);
- pthread_mutex_destroy(&ovs_events_ctx.mutex);
+ /* release memory allocated for config */
+ ovs_events_config_free();
DEBUG(OVS_EVENTS_PLUGIN ": plugin has been destroyed");
- return (0);
+ return 0;
}
/* Register OVS plugin callbacks */
-void
-module_register(void)
-{
+void module_register(void) {
plugin_register_complex_config(OVS_EVENTS_PLUGIN, ovs_events_plugin_config);
plugin_register_init(OVS_EVENTS_PLUGIN, ovs_events_plugin_init);
- plugin_register_complex_read(NULL, OVS_EVENTS_PLUGIN,
- ovs_events_plugin_read, 0, NULL);
plugin_register_shutdown(OVS_EVENTS_PLUGIN, ovs_events_plugin_shutdown);
}
projects / collectd.git / blobdiff