Logic App with azure monitor and conditions - notifications

Question

I create a workflow with logicAPP. The goal is to notify a team when patch is missing for VM. I use azure monitor in the logic app to set the query. I decided to put after the Azure Monitor , a condition to know if the query table is empty or have data. if the table is empty, the logix is true , so it does'nt send notification, and when its false , it sends notification.
When I run , I got a logic errors. Normally , the table has not data but after condition , the function empty([my_table]) returns false and sends me notification with the result ("The query yielded no data")
what is the problem ??
Thanks

Answer 1

Based on the above shared requirement we have created the logic app & tested it our local environment , it is working fine.
Below is the complete logic code :
{
"definition": {
"$schema": "https://schema.management.azure.com/providers/Microsoft.Logic/schemas/2016-06-01/workflowdefinition.json#",
"actions": {
"Condition_2": {
"actions": {
"Terminate_2": {
"inputs": {
"runStatus": "Cancelled"
},
"runAfter": {},
"type": "Terminate"
}
},
"else": {
"actions": {
"Send_an_email_(V2)_2": {
"inputs": {
"body": {
"Body": "<p>#{base64ToString(body('Run_query_and_visualize_results')?['body'])}</p>",
"Subject": "list of vm from update management ",
"To": "<UserEmailId>"
},
"host": {
"connection": {
"name": "#parameters('$connections')['office365']['connectionId']"
}
},
"method": "post",
"path": "/v2/Mail"
},
"runAfter": {},
"type": "ApiConnection"
}
}
},
"expression": {
"and": [
{
"equals": [
"#length(body('Run_query_and_visualize_results')?['body'])",
0
]
}
]
},
"runAfter": {
"Run_query_and_visualize_results": [
"Succeeded"
]
},
"type": "If"
},
"Run_query_and_visualize_results": {
"inputs": {
"body": "Update\n| where Classification == 'Security Updates' or Classification == 'Critical Updates'\n| where UpdateState == 'Needed'\n| summarize by Computer,ResourceGroup,Classification,UpdateState\n|sort by Computer",
"host": {
"connection": {
"name": "#parameters('$connections')['azuremonitorlogs']['connectionId']"
}
},
"method": "post",
"path": "/visualizeQuery",
"queries": {
"resourcegroups": "<Resource_group_Name",
"resourcename": "<log analytics workspacename",
"resourcetype": "Log Analytics Workspace",
"subscriptions": "<subcription_id>",
"timerange": "Last 12 hours",
"visType": "Html Table"
}
},
"runAfter": {},
"type": "ApiConnection"
}
},
"contentVersion": "1.0.0.0",
"outputs": {},
"parameters": {
"$connections": {
"defaultValue": {},
"type": "Object"
}
},
"triggers": {
"Recurrence": {
"evaluatedRecurrence": {
"frequency": "Hour",
"interval": 3
},
"recurrence": {
"frequency": "Hour",
"interval": 3
},
"type": "Recurrence"
}
}
},
"parameters": {
"$connections": {
"value": {
"azuremonitorlogs": {
"connectionId": "/subscriptions/<subcription-id>/resourceGroups/<resource-group>/providers/Microsoft.Web/connections/azuremonitorlogs",
"connectionName": "azuremonitorlogs",
"id": "/subscriptions/<subcription-id>/providers/Microsoft.Web/locations/northcentralus/managedApis/azuremonitorlogs"
},
"office365": {
"connectionId": "/subscriptions/<subcription-id>/resourceGroups/<resource-group>/providers/Microsoft.Web/connections/office365",
"connectionName": "office365",
"id": "/subscriptions/<subcription-id>/providers/Microsoft.Web/locations/northcentralus/managedApis/office365"
}
}
}
}
}
please find the reference output of the above logic sample run :