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--- current_alerts [2021/11/03 10:41] – emozolyak
+++ current_alerts [2022/07/04 12:35] (current) – [GetCurrentAlerts()] emozolyak
@@ Line 9: / Line 9: @@
 ^Key ^Description	                                                      ^Data type^
-|alertId|Alert id key in the project |	Number|
+|alertId|Alert id key in the project |Number |
-|title	|Alert name	|String|
+|title	|Alert name	|String |
-|startTime	|Alert trigger time |	Number, UnixTime|
+|startTime	|Alert trigger time |Number, UnixTime |
-|alertLevel	|The flag indicates the alert can be confirmed.	| [1,2,3] Info, Warn, Alert|
+|alertLevel	|The flag indicates the alert can be confirmed.	|[1,2,3] Info, Warn, Alert |
-|acknowledgedBy|	User name, who confirmed the alert. If the alert is not confirmed - empty string.|String|
+|acknowledgedBy|	User name, who confirmed the alert. If the alert is not confirmed - empty string.|String |
-|acknowledgedTime	|Time, when the alert was confiremed. If the alert is not confirmed - 0.|Number, UnixTime|
+|acknowledgedTime	|Time, when the alert was confiremed. If the alert is not confirmed - 0.|Number, UnixTime |
-|canBeAcknowledged	|The flag indicates the alert can be confirmed.	|Boolean|
+|canBeAcknowledged	|The flag indicates the alert can be confirmed.	|Boolean |
-|groupId|The id key of the group the alert resides in|Number |
+|groupId|The id key of the group the alert belongs to|Number |
 Using this structure, it is possible to implement, for example, various notification scenarios about unconfirmed accidents.
@@ Line 22: / Line 22: @@
 An example of such program:
 <code lua>
-local notificationsSent = {};
 function main (userId)
-    local alerts = GetCurrentAlerts();
-    if (#alerts > 0) then
+  local ACK_DELAY_TOLERANCE = 30
-        for num,alert in pairs(alerts) do
+  local now = os.time()
-            local now = os.time();
-            local canBeAcknowledged = alert['canBeAcknowledged'];
+  local alerts = GetCurrentAlerts()
-            local acknowledgedTime = alert['acknowledgedTime'];
-            local startTime = alert['startTime'];
+  for a_num, a in ipairs(alerts) do
-            local waitSecondsBeforeEscalate = 300; -- notify about alerts that are not confirmed for more than 5 minutes
+      INFO("Processing alert #" .. a_num)
-            local regId = alert['regId'];
+    --   tprint(a)
-            local bit = alert['bit'];
+      INFO(tostring(a.canBeAcknowledged) .. ' ' .. a.startTime)
-            if (canBeAcknowledged and acknowledgedTime == 0) then
+      local time_diff = (now - a.startTime)
-                if (now - startTime > waitSecondsBeforeEscalate) then
+        if (a.canBeAcknowledged and (time_diff > ACK_DELAY_TOLERANCE)) then
-                    if (notificationsSent[regId] == nil or notificationsSent[regId][bit] ~= startTime) then
+            ERROR("The alert " .. a.title .. " exceeded ack time!")
-                        --ERROR("Alert" .. alert['title'] .. " was not acknowledged!");
+        end
-                        SendSMS("380501234567", "The alert is not confirmed: " .. alert['title']);
+   end
-                        if (notificationsSent[regId] == nil) then
-                            notificationsSent[regId] = {};
+end
-                        end
-                        notificationsSent[regId][bit] = startTime;
+function tprint(t, indent)
-                    end
+    if not indent then indent = 0 end
-                end
+    for k, v in pairs(t) do
-            end
+        local formatting = string.rep(' ', indent) .. k .. ': '
-        end
+        if type(v) == "table" then
-    end
+            ERROR(formatting)
+            tprint(v, indent + 1) -- recursive call
+        else
+            if type(v) == "boolean" then
+                v = v and "TRUE" or "FALSE"
+            end
+            ERROR(formatting .. v)
+        end
+    end -- for
+end -- tprint
+</code>
+=== Example of sending Telegram messages upon new alerts ===
+Below is the example of how to send Telegram messages when the alert count has increased:
+<code lua>
+--[[
+    Checks if number of alerts has increased and then sends message via
+    Telegram
+--]]
+TELEGRAM_BOT_ID = "229345xxxxx"                -- your telegram chat bot id
+active_alerts = 0                              -- global counter for current alerts
+function main (userId)
+  local alerts = GetCurrentAlerts()
+  if (#alerts > active_alerts) then            -- number has increased, # - means count table elements
+      local a_names = {}                       DEBUG("Alert count has increased!")
+      for a_num, a in ipairs(alerts) do
+          INFO("Processing alert #" .. a_num)
+          table.insert(a_names, a.title)
+      end
+      SendTelegramMessage(TELEGRAM_BOT_ID,
+                          "Current alerts are: " .. table.concat(a_names, ', '))
+  end
+  active_alerts = #alerts
 end
 </code>