Expected property 'targetProperty' is missing from event metadata

I have got a sample/simple repo at https://github.com/ysmoradi/AppInsightsSdkWithoutAzureAccount/tree/elastic

HealthCheck:

2020-05-11 20:12:36Z,Microsoft.Diagnostics.EventFlow.Output,Error,ElasticSearchOutput: Expected property 'targetProperty' is missing from event metadata

StdOutput is working fine, but the elastic output is not working properly.

[karolz-ms]

ApplicationInsights input version 1.5.1 has been published to nuget.org. Thanks @ysmoradi for bringing this to our attention and for a great repro.

[karolz-ms]

@ysmoradi just a couple of remarks while I am working on the fix

You can work around the issue by setting the target on the dependency telemetry. i.e. after this line add something like

exportExcelOperation.Telemetry.Target = "Excel";

Also, just FYI, you can also filter events before they get to any output, for example (eventFlowConfig.json file):

{
  "inputs": [
    {
      "type": "ApplicationInsights"
    }
  ],
  "filters": [
    {
      "type": "drop",
      "Include":  "Target == localhost:9200"
    }
  ],
  "outputs": [
    {
      "type": "StdOutput"
    },
    {
      "type": "ElasticSearch",
      "serviceUri": "http://localhost:9200"
    }
  ],
  "schemaVersion": "2016-08-11"
}