Does Netty Support http.route in Metrics or do only those marked with "Provides http.route [2]" have them?

[scprek]

edit: we do have micronaut open telemetry and micrometer percentile metrics enabled but we have lots of apps not on a new enough version and so we’re hoping for a quick win with the agent for all apps without a forced upgrade.

Setup:

• Micronaut 3.9.4
• OTEL agent version = v1.31.0

I'm struggling to figure out specifically if Netty 4.1+ supports http.route in http.server.request.durationHttp Server Metrics. The spans have http.target not templated, but at least they are there.

We are using micronaut if that complicates the netty instrumentation.

Background

I was reading through this and wanted to confirm what it meant

[2] Provides http.route: Provides route-based span name for existing SERVER span. If applicable, provides http.route span and metric attribute on existing SERVER span and metrics.

reference

For each row, You either see
HTTP Client Spans, HTTP Client Metrics, HTTP Server Spans, HTTP Server Metrics

or, when the http.route is called out, looks like

Provides http.route [2], Controller Spans [3]

Output of OTEL Collector Logs of Netty Metrics

Metric #1
Descriptor:
     -> Name: http.server.duration
     -> Description: The duration of the inbound HTTP request
     -> Unit: ms
     -> DataType: Histogram
     -> AggregationTemporality: Cumulative
HistogramDataPoints #0
Data point attributes:
     -> http.method: Str(POST)
     -> http.scheme: Str(http)
     -> http.status_code: Int(400)
     -> net.host.name: Str(localhost)
     -> net.host.port: Int(8080)
     -> net.protocol.name: Str(http)
     -> net.protocol.version: Str(1.1)
StartTimestamp: 2023-11-06 19:20:42.079289 +0000 UTC
Timestamp: 2023-11-06 19:25:42.091006 +0000 UTC
Count: 2
Sum: 463.631500
Min: 72.785375
Max: 390.846125
ExplicitBounds #0: 0.000000
ExplicitBounds #1: 5.000000
ExplicitBounds #2: 10.000000
ExplicitBounds #3: 25.000000
ExplicitBounds #4: 50.000000
ExplicitBounds #5: 75.000000
ExplicitBounds #6: 100.000000
ExplicitBounds #7: 250.000000
ExplicitBounds #8: 500.000000
ExplicitBounds #9: 750.000000
ExplicitBounds #10: 1000.000000
ExplicitBounds #11: 2500.000000
ExplicitBounds #12: 5000.000000
ExplicitBounds #13: 7500.000000
ExplicitBounds #14: 10000.000000
Buckets #0, Count: 0
Buckets #1, Count: 0
Buckets #2, Count: 0
Buckets #3, Count: 0
Buckets #4, Count: 0
Buckets #5, Count: 1
Buckets #6, Count: 0
Buckets #7, Count: 0
Buckets #8, Count: 1
Buckets #9, Count: 0
Buckets #10, Count: 0
Buckets #11, Count: 0
Buckets #12, Count: 0
Buckets #13, Count: 0
Buckets #14, Count: 0
Buckets #15, Count: 0
HistogramDataPoints #1
Data point attributes:
     -> http.method: Str(POST)
     -> http.scheme: Str(http)
     -> http.status_code: Int(200)
     -> net.host.name: Str(localhost)
     -> net.host.port: Int(8080)
     -> net.protocol.name: Str(http)
     -> net.protocol.version: Str(1.1)
StartTimestamp: 2023-11-06 19:20:42.079289 +0000 UTC
Timestamp: 2023-11-06 19:25:42.091006 +0000 UTC
Count: 6
Sum: 15935.737082
Min: 484.485583
Max: 8839.640125
ExplicitBounds #0: 0.000000
ExplicitBounds #1: 5.000000
ExplicitBounds #2: 10.000000
ExplicitBounds #3: 25.000000
ExplicitBounds #4: 50.000000
ExplicitBounds #5: 75.000000
ExplicitBounds #6: 100.000000
ExplicitBounds #7: 250.000000
ExplicitBounds #8: 500.000000
ExplicitBounds #9: 750.000000
ExplicitBounds #10: 1000.000000
ExplicitBounds #11: 2500.000000
ExplicitBounds #12: 5000.000000
ExplicitBounds #13: 7500.000000
ExplicitBounds #14: 10000.000000
Buckets #0, Count: 0
Buckets #1, Count: 0
Buckets #2, Count: 0
Buckets #3, Count: 0
Buckets #4, Count: 0
Buckets #5, Count: 0
Buckets #6, Count: 0
Buckets #7, Count: 0
Buckets #8, Count: 1
Buckets #9, Count: 1
Buckets #10, Count: 0
Buckets #11, Count: 2
Buckets #12, Count: 1
Buckets #13, Count: 0
Buckets #14, Count: 1
Buckets #15, Count: 0
Exemplars:
Exemplar #0
     -> Trace ID: 8dfc8940a2db840653fd12ce86978e37
     -> Span ID: 9997cb3d0b973ab1
     -> Timestamp: 2023-11-06 19:24:55.351898 +0000 UTC
     -> Value: 2234.041000
     -> FilteredAttributes:
          -> http.request_content_length: Int(1955)
          -> http.response_content_length: Int(57)
          -> http.target: Str(/v1/test/quotes/[redacted-id]/accept)
          -> net.sock.family: Str(inet6)
          -> net.sock.host.addr: Str(0:0:0:0:0:0:0:1)
          -> net.sock.peer.addr: Str(0:0:0:0:0:0:0:1)
          -> net.sock.peer.port: Int(64241)
          -> net.transport: Str(ip_tcp)
          -> user_agent.original: Str(PostmanRuntime/7.34.0)
Exemplar #1
     -> Trace ID: 6003d6231e48142f16d4bef85cbc1ed6
     -> Span ID: 1295fe475a46b87e
     -> Timestamp: 2023-11-06 19:24:49.734379 +0000 UTC
     -> Value: 2593.219500
     -> FilteredAttributes:
          -> http.request_content_length: Int(1521)
          -> http.response_content_length: Int(210)
          -> http.target: Str(/v1/test/quotes)
          -> net.sock.family: Str(inet6)
          -> net.sock.host.addr: Str(0:0:0:0:0:0:0:1)
          -> net.sock.peer.addr: Str(0:0:0:0:0:0:0:1)
          -> net.sock.peer.port: Int(64241)
          -> net.transport: Str(ip_tcp)
          -> user_agent.original: Str(PostmanRuntime/7.34.0)
ScopeMetrics #4
ScopeMetrics SchemaURL: 
InstrumentationScope io.opentelemetry.sdk.logs 
Metric #0
Descriptor:
     -> Name: queueSize
     -> Description: The number of items queued
     -> Unit: 1
     -> DataType: Gauge
NumberDataPoints #0
Data point attributes:
     -> processorType: Str(BatchLogRecordProcessor)
StartTimestamp: 2023-11-06 19:20:42.079289 +0000 UTC
Timestamp: 2023-11-06 19:25:42.091006 +0000 UTC
Value: 0
ScopeMetrics #5
ScopeMetrics SchemaURL: 
InstrumentationScope io.opentelemetry.exporters.otlp-grpc 

[trask]

hi @scprek! netty is too low-level and doesn't itself have any concept of route. The Java agent doesn't have any micronaut-specific instrumentation (yet, at least). Can you see if the solution in #3424 works for you? thx

[scprek]

Thanks for the answer. I forgot I didn’t add that we do have micronaut open telemetry and micrometer percentile metrics enabled but we have lots of apps not on a new enough version and so we’re hoping for a quick win with the agent for all apps without a forced upgrade. I’ll edit the original question above so searches will see it