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Monitoring Azure Web PubSub data reference

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This article provides a reference of log and metric data collected to analyze the performance and availability of Azure Web PubSub. See the Monitor Azure Web PubSub article for details on collecting and analyzing monitoring data for Azure Web PubSub.

Metrics

Metrics provide insights into the operational state of the service. The available metrics are:

Metric Unit Recommended Aggregation Type Description Dimensions
Connection Close Count Count Sum The count of connections closed by various reasons. ConnectionCloseCategory
Connection Count Count Max / Avg The number of connections to the service. No Dimensions
Connection Open Count Count Sum The count of new connections opened. No Dimensions
Connection Quota Utilization Percent Max / Avg The percentage of connections relative to connection quota. No Dimensions
Inbound Traffic Bytes Sum The inbound traffic to the service. No Dimensions
Outbound Traffic Bytes Sum The outbound traffic from the service. No Dimensions
Server Load Percent Max / Avg The percentage of server load. No Dimensions

For more information, see Metrics.

Resource Logs

Archive to a storage account

Archive log JSON strings include elements listed in the following tables:

Format

Name Description
time Log event time
level Log event level
resourceId Resource ID of your Azure SignalR Service
location Location of your Azure SignalR Service
category Category of the log event
operationName Operation name of the event
callerIpAddress IP address of your server or client
properties Detailed properties related to this log event. For more detail, see the properties table below

Properties Table

Name Description
collection Collection of the log event. Allowed values are: Connection, Authorization and Throttling
connectionId Identity of the connection
userId Identity of the user
message Detailed message of log event
hub User-defined Hub Name
routeTemplate The route template of the API
httpMethod The Http method (POST/GET/PUT/DELETE)
url The uniform resource locator
traceId The unique identifier to the invocation
statusCode The Http response code
duration The duration between the request is received and processed
headers The additional information passed by the client and the server with an HTTP request or response

The following code is an example of an archive log JSON string:

{
  "properties": {
    "message": "Connection started",
    "collection": "Connection",
    "connectionId": "LW61bMG2VQLIMYIVBMmyXgb3c418200",
    "userId": null
  },
  "operationName": "ConnectionStarted",
  "category": "ConnectivityLogs",
  "level": "Informational",
  "callerIpAddress": "167.220.255.79",
  "resourceId": "/SUBSCRIPTIONS/XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX/RESOURCEGROUPS/MYGROUP/PROVIDERS/MICROSOFT.SIGNALRSERVICE/WEBPUBSUB/MYWEBPUBSUB",
  "time": "2021-09-17T05:25:05Z",
  "location": "westus"
}

Archive logs schema for Log Analytics

Archive log columns include elements listed in the following table.

Name Description
TimeGenerated Log event time
Collection Collection of the log event. Allowed values are: Connection, Authorization and Throttling
OperationName Operation name of the event
Location Location of your Azure SignalR Service
Level Log event level
CallerIpAddress IP address of your server/client
Message Detailed message of log event
UserId Identity of the user
ConnectionId Identity of the connection
ConnectionType Type of the connection. Allowed values are: Server | Client. Server: connection from server side; Client: connection from client side
TransportType Transport type of the connection. Allowed values are: Websockets | ServerSentEvents | LongPolling

Azure Monitor Logs tables

Azure Web PubSub uses Kusto tables from Azure Monitor Logs. You can query these tables with Log analytics.

See also