Move host log alerts to host alerts. Fix syslog alerts.

scripts/lua/modules/alert_definitions/host/host_alert_host_log.lua

@@ -0,0 +1,61 @@
+--
+-- (C) 2019-21 - ntop.org
+--
+
+-- ##############################################
+
+local host_alert_keys = require "host_alert_keys"
+local alert_creators = require "alert_creators"
+-- Import the classes library.
+local classes = require "classes"
+-- Make sure to import the Superclass!
+local alert = require "alert"
+
+-- ##############################################
+
+local host_alert_host_log = classes.class(alert)
+
+-- ##############################################
+
+host_alert_host_log.meta = {
+  alert_key = host_alert_keys.host_alert_host_log,
+  i18n_title = "alerts_dashboard.host_log",
+  icon = "fa fa-file-text-o",
+}
+
+-- ##############################################
+-- @brief Prepare an alert table used to generate the alert
+-- @param host The string with the name or ip address of the host
+-- @return A table with the alert built
+function host_alert_host_log:init(host, level, facility, message)
+   -- Call the parent constructor
+   self.super:init()
+
+   self.alert_type_params = {
+      host = host,
+      facility = facility,
+      message = message,
+   }
+end
+
+-- #######################################################
+
+-- @brief Format an alert into a human-readable string
+-- @param ifid The integer interface id of the generated alert
+-- @param alert The alert description table, including alert data such as the generating entity, timestamp, granularity, type
+-- @param alert_type_params Table `alert_type_params` as built in the `:init` method
+-- @return A human-readable string
+function host_alert_host_log.format(ifid, alert, alert_type_params)
+  local hostinfo = hostkey2hostinfo(alert.entity_val)
+
+  return(i18n("alert_messages.host_log", {
+    host = alert_type_params.host,
+    url = getHostUrl(hostinfo["host"], hostinfo["vlan"]),
+    facility = alert_type_params.facility,
+    line = alert_type_params.message,
+  }))
+end
+
+-- #######################################################
+
+return host_alert_host_log