Azure Monitor + @distributed_trace

📦 Azure Monitor integration with OpenTelemetry via @distributed_trace annotation 🔍

Configuration

Create a .env file in the project root — see .env.sample for reference.

Kusto Queries

1. Retrieve traces from the last hour

traces
| where timestamp > ago(1h)
| where message contains "Sample"
| project timestamp, message, customDimensions
| order by timestamp desc

2. Logs sent by AzureMonitorLogExporter

traces
| where timestamp > ago(1h)
| where message contains "Processing" or message contains "Processed"
| project timestamp, message, severityLevel, customDimensions
| order by timestamp desc

3. Spans sent by AzureMonitorTraceExporter

SpanKind	Azure Monitor Table	Description
INTERNAL	traces	Background operations or internal logic
SERVER	requests	Incoming HTTP or RPC requests
CLIENT	dependencies	Outgoing calls to external services
PRODUCER	dependencies	Messages sent to queues/topics
CONSUMER	dependencies	Messages received from queues/topics

Combined logs and spans

union traces, dependencies, requests, exceptions
| where timestamp > ago(1h)
| where message contains "Processing" or message contains "Processed"
| project timestamp, itemType, message, operation_Name, severityLevel, customDimensions
| order by timestamp desc

Aggregate logs by severity

traces
| where timestamp > ago(1h)
| summarize Count = count() by severityLevel
| order by severityLevel

Aggregate spans by operation name

traces
| where timestamp > ago(1h)
| summarize Count = count() by operation_Name
| order by Count desc

Span extraction (dependencies, requests, traces)

union dependencies, requests, traces
| where timestamp > ago(1h)
| project timestamp, itemType, operation_Name, id, duration, customDimensions
| order by timestamp desc

View INTERNAL span

traces
| where timestamp > ago(1h)
| where message contains "Internal operation span"
| project timestamp, message, customDimensions

View SERVER span

requests
| where timestamp > ago(1h)
| where name == "server_span"
| project timestamp, name, operation_Name, customDimensions

View CLIENT span

dependencies
| where timestamp > ago(1h)
| where name == "client_span"
| project timestamp, name, target, operation_Name

View PRODUCER & CONSUMER spans

dependencies
| where timestamp > ago(1h)
| where name in ("producer_span", "consumer_span")
| project timestamp, name, operation_Name, target