Adding Cassandra Requests

Author: SnehaGunda

articles/cosmos-db/cosmosdb-monitor-resource-logs.md

@@ -29,25 +29,31 @@ Platform metrics and the Activity logs are collected automatically, whereas you
 
  * **DataPlaneRequests**: Select this option to log back-end requests to all APIs, which include SQL, Graph, MongoDB, Cassandra, and Table API accounts in Azure Cosmos DB. Key properties to note are: `Requestcharge`, `statusCode`, `clientIPaddress`, and `partitionID`.
 
-    ```
+    ```json
     { "time": "2019-04-23T23:12:52.3814846Z", "resourceId": "/SUBSCRIPTIONS/<your_subscription_ID>/RESOURCEGROUPS/<your_resource_group>/PROVIDERS/MICROSOFT.DOCUMENTDB/DATABASEACCOUNTS/<your_database_account>", "category": "DataPlaneRequests", "operationName": "ReadFeed", "properties": {"activityId": "66a0c647-af38-4b8d-a92a-c48a805d6460","requestResourceType": "Database","requestResourceId": "","collectionRid": "","statusCode": "200","duration": "0","userAgent": "Microsoft.Azure.Documents.Common/2.2.0.0","clientIpAddress": "10.0.0.24","requestCharge": "1.000000","requestLength": "0","responseLength": "372","resourceTokenUserRid": "","region": "East US","partitionId": "062abe3e-de63-4aa5-b9de-4a77119c59f8","keyType": "PrimaryReadOnlyMasterKey","databaseName": "","collectionName": ""}}
     ```
 
-* **MongoRequests**: Select this option to log user-initiated requests from the front end to serve requests to Azure Cosmos DB's API for MongoDB, this log type is not available for other API accounts. MongoDB requests will appear in MongoRequests as well as DataPlaneRequests. Key properties to note are: `Requestcharge`, `opCode`.
+* **MongoRequests**: Select this option to log user-initiated requests from the front end to serve requests to Azure Cosmos DB's API for MongoDB. This log type is not available for other API accounts. Key properties to note are: `Requestcharge`, `opCode`. When you enable MongoRequests in diagnostics logs, make sure to turn off the DataPlaneRequests. You would see one log for every request made on the API.
 
-    ```
+    ```json
     { "time": "2019-04-10T15:10:46.7820998Z", "resourceId": "/SUBSCRIPTIONS/<your_subscription_ID>/RESOURCEGROUPS/<your_resource_group>/PROVIDERS/MICROSOFT.DOCUMENTDB/DATABASEACCOUNTS/<your_database_account>", "category": "MongoRequests", "operationName": "ping", "properties": {"activityId": "823cae64-0000-0000-0000-000000000000","opCode": "MongoOpCode_OP_QUERY","errorCode": "0","duration": "0","requestCharge": "0.000000","databaseName": "admin","collectionName": "$cmd","retryCount": "0"}}
     ```
 
+* **CassandraRequests**: Select this option to log user-initiated requests from the front end to serve requests to Azure Cosmos DB's API for Cassandra. This log type is not available for other API accounts. The key properties to note are `operationName`, `requestCharge`, `piiCommandText`. When you enable CassandraRequests in diagnostics logs, make sure to turn off the DataPlaneRequests. You would see one log for every request made on the API.
+
+   ```json
+   { "time": "2020-03-30T23:55:10.9579593Z", "resourceId": "/SUBSCRIPTIONS/<your_subscription_ID>/RESOURCEGROUPS/<your_resource_group>/PROVIDERS/MICROSOFT.DOCUMENTDB/DATABASEACCOUNTS/<your_database_account>", "category": "CassandraRequests", "operationName": "QuerySelect", "properties": {"activityId": "6b33771c-baec-408a-b305-3127c17465b6","opCode": "<empty>","errorCode": "-1","duration": "0.311900","requestCharge": "1.589237","databaseName": "system","collectionName": "local","retryCount": "<empty>","authorizationTokenType": "PrimaryMasterKey","address": "104.42.195.92","piiCommandText": "{"request":"SELECT key from system.local"}","userAgent": """"}}
+   ```
+
 * **QueryRuntimeStatistics**: Select this option to log the query text that was executed. This log type is available for SQL API accounts only.
 
-    ```
+    ```json
     { "time": "2019-04-14T19:08:11.6353239Z", "resourceId": "/SUBSCRIPTIONS/<your_subscription_ID>/RESOURCEGROUPS/<your_resource_group>/PROVIDERS/MICROSOFT.DOCUMENTDB/DATABASEACCOUNTS/<your_database_account>", "category": "QueryRuntimeStatistics", "properties": {"activityId": "278b0661-7452-4df3-b992-8aa0864142cf","databasename": "Tasks","collectionname": "Items","partitionkeyrangeid": "0","querytext": "{"query":"SELECT *\nFROM c\nWHERE (c.p1__10 != true)","parameters":[]}"}}
     ```
 
 * **PartitionKeyStatistics**: Select this option to log the statistics of the partition keys. This is currently represented with the storage size (KB) of the partition keys. See the [Troubleshooting issues by using Azure Diagnostic queries](#diagnostic-queries) section of this article. For example queries that use "PartitionKeyStatistics". The log is emitted against the first three partition keys that occupy most data storage. This log contains data such as subscription ID, region name, database name, collection name, partition key, and storage size in KB.
 
-    ```
+    ```json
     { "time": "2019-10-11T02:33:24.2018744Z", "resourceId": "/SUBSCRIPTIONS/<your_subscription_ID>/RESOURCEGROUPS/<your_resource_group>/PROVIDERS/MICROSOFT.DOCUMENTDB/DATABASEACCOUNTS/<your_database_account>", "category": "PartitionKeyStatistics", "properties": {"subscriptionId": "<your_subscription_ID>","regionName": "West US 2","databaseName": "KustoQueryResults","collectionname": "CapacityMetrics","partitionkey": "["CapacityMetricsPartition.136"]","sizeKb": "2048270"}}
     ```