ApplicationInsights：如何查询包含错误的Azure函数执行的完整跟踪？

Question

我想使用Application Insights分析我的Azure Functions的日志记录输出。如果一个函数执行的日志输出至少包含一个错误，那么我想查看该执行的整个日志输出。

起点：

traces 
| where severityLevel == 3
| where operation_Name == "MyFunctionName" 
| project timestamp, operation_Name, message

但这仅提供错误本身，而不提供函数执行的其他输出。

Answer 1

对于Azure Functions V1：

traces 
| where severityLevel == 3
| where operation_Id != ""
| where operation_Name == "MyFunctionName" 
| project operation_Name , operation_Id, severityLevel    
| join (traces | project timestamp, operation_Id,  message ) on operation_Id 
| project timestamp, operation_Name, operation_Id, message

所有具有相同operation_Id的行都属于一个函数执行。

对于Azure Functions V2：

traces 
| extend invocationId = tostring(customDimensions.InvocationId)
| where severityLevel == 3
| where invocationId != ""
| where operation_Name == "MyFunctionName" 
| project operation_Name, severityLevel, invocationId    
| join (traces |extend invocationId = tostring(customDimensions.InvocationId)| project timestamp, invocationId,  message ) on invocationId  
| project timestamp, operation_Name, message, invocationId

所有具有相同invocationId的行都属于一个函数执行。