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davsclaus pushed a commit to branch feature/CAMEL-23712-traceCustomIdOnly
in repository https://gitbox.apache.org/repos/asf/camel.git

commit a97b00b0687ddffb066099653610bce6357c7535
Author: Claus Ibsen <[email protected]>
AuthorDate: Mon Jun 8 16:43:34 2026 +0200

    CAMEL-23712: Add traceCustomIdOnly option to only trace processors with 
custom IDs
    
    Co-Authored-By: Claude Opus 4.6 <[email protected]>
    Signed-off-by: Claus Ibsen <[email protected]>
---
 .../MicrometerObservabilityTracerConfigurer.java   |   6 ++
 .../OpenTelemetryTracerConfigurer.java             |   6 ++
 .../src/main/docs/opentelemetry2.adoc              |   1 +
 .../telemetrydev/TelemetryDevTracerConfigurer.java |   6 ++
 .../TraceProcessorsInterceptStrategy.java          |   4 +
 .../java/org/apache/camel/telemetry/Tracer.java    |  10 ++
 .../camel/telemetry/TraceCustomIdOnlyTest.java     | 116 +++++++++++++++++++++
 .../src/main/java/org/apache/camel/NamedNode.java  |   9 ++
 8 files changed, 158 insertions(+)

diff --git 
a/components/camel-micrometer-observability/src/generated/java/org/apache/camel/micrometer/observability/MicrometerObservabilityTracerConfigurer.java
 
b/components/camel-micrometer-observability/src/generated/java/org/apache/camel/micrometer/observability/MicrometerObservabilityTracerConfigurer.java
index 24459132c651..aa5b235acc4c 100644
--- 
a/components/camel-micrometer-observability/src/generated/java/org/apache/camel/micrometer/observability/MicrometerObservabilityTracerConfigurer.java
+++ 
b/components/camel-micrometer-observability/src/generated/java/org/apache/camel/micrometer/observability/MicrometerObservabilityTracerConfigurer.java
@@ -36,6 +36,8 @@ public class MicrometerObservabilityTracerConfigurer extends 
org.apache.camel.su
         case "propagator": target.setPropagator(property(camelContext, 
io.micrometer.tracing.propagation.Propagator.class, value)); return true;
         case "spanlifecyclemanager":
         case "spanLifecycleManager": 
target.setSpanLifecycleManager(property(camelContext, 
org.apache.camel.telemetry.SpanLifecycleManager.class, value)); return true;
+        case "tracecustomidonly":
+        case "traceCustomIdOnly": 
target.setTraceCustomIdOnly(property(camelContext, boolean.class, value)); 
return true;
         case "traceheadersinclusion":
         case "traceHeadersInclusion": 
target.setTraceHeadersInclusion(property(camelContext, boolean.class, value)); 
return true;
         case "traceprocessors":
@@ -61,6 +63,8 @@ public class MicrometerObservabilityTracerConfigurer extends 
org.apache.camel.su
         case "propagator": return 
io.micrometer.tracing.propagation.Propagator.class;
         case "spanlifecyclemanager":
         case "spanLifecycleManager": return 
org.apache.camel.telemetry.SpanLifecycleManager.class;
+        case "tracecustomidonly":
+        case "traceCustomIdOnly": return boolean.class;
         case "traceheadersinclusion":
         case "traceHeadersInclusion": return boolean.class;
         case "traceprocessors":
@@ -87,6 +91,8 @@ public class MicrometerObservabilityTracerConfigurer extends 
org.apache.camel.su
         case "propagator": return target.getPropagator();
         case "spanlifecyclemanager":
         case "spanLifecycleManager": return target.getSpanLifecycleManager();
+        case "tracecustomidonly":
+        case "traceCustomIdOnly": return target.isTraceCustomIdOnly();
         case "traceheadersinclusion":
         case "traceHeadersInclusion": return target.isTraceHeadersInclusion();
         case "traceprocessors":
diff --git 
a/components/camel-opentelemetry2/src/generated/java/org/apache/camel/opentelemetry2/OpenTelemetryTracerConfigurer.java
 
b/components/camel-opentelemetry2/src/generated/java/org/apache/camel/opentelemetry2/OpenTelemetryTracerConfigurer.java
index 98722d317372..16a6995a0166 100644
--- 
a/components/camel-opentelemetry2/src/generated/java/org/apache/camel/opentelemetry2/OpenTelemetryTracerConfigurer.java
+++ 
b/components/camel-opentelemetry2/src/generated/java/org/apache/camel/opentelemetry2/OpenTelemetryTracerConfigurer.java
@@ -33,6 +33,8 @@ public class OpenTelemetryTracerConfigurer extends 
org.apache.camel.support.comp
         case "includePatterns": 
target.setIncludePatterns(property(camelContext, java.lang.String.class, 
value)); return true;
         case "spanlifecyclemanager":
         case "spanLifecycleManager": 
target.setSpanLifecycleManager(property(camelContext, 
org.apache.camel.telemetry.SpanLifecycleManager.class, value)); return true;
+        case "tracecustomidonly":
+        case "traceCustomIdOnly": 
target.setTraceCustomIdOnly(property(camelContext, boolean.class, value)); 
return true;
         case "traceheadersinclusion":
         case "traceHeadersInclusion": 
target.setTraceHeadersInclusion(property(camelContext, boolean.class, value)); 
return true;
         case "traceprocessors":
@@ -54,6 +56,8 @@ public class OpenTelemetryTracerConfigurer extends 
org.apache.camel.support.comp
         case "includePatterns": return java.lang.String.class;
         case "spanlifecyclemanager":
         case "spanLifecycleManager": return 
org.apache.camel.telemetry.SpanLifecycleManager.class;
+        case "tracecustomidonly":
+        case "traceCustomIdOnly": return boolean.class;
         case "traceheadersinclusion":
         case "traceHeadersInclusion": return boolean.class;
         case "traceprocessors":
@@ -76,6 +80,8 @@ public class OpenTelemetryTracerConfigurer extends 
org.apache.camel.support.comp
         case "includePatterns": return target.getIncludePatterns();
         case "spanlifecyclemanager":
         case "spanLifecycleManager": return target.getSpanLifecycleManager();
+        case "tracecustomidonly":
+        case "traceCustomIdOnly": return target.isTraceCustomIdOnly();
         case "traceheadersinclusion":
         case "traceHeadersInclusion": return target.isTraceHeadersInclusion();
         case "traceprocessors":
diff --git a/components/camel-opentelemetry2/src/main/docs/opentelemetry2.adoc 
b/components/camel-opentelemetry2/src/main/docs/opentelemetry2.adoc
index 9179c7bb1547..36112d5975fd 100644
--- a/components/camel-opentelemetry2/src/main/docs/opentelemetry2.adoc
+++ b/components/camel-opentelemetry2/src/main/docs/opentelemetry2.adoc
@@ -27,6 +27,7 @@ The configuration properties for the OpenTelemetry2 tracer 
are:
 |`enabled`| false | Turn the tracing on/off.
 |`traceProcessors`| false | Trace inner custom processors (i.e., any `process` 
configured in the route). When disabled, custom processors are not visible from 
the OpenTelemetry perspective and have no active span or context.
 |`disableCoreProcessors`| false | Disable any inner core processors (any core 
DSL processor provided in the route, for example `bean`, `log`, ...).
+|`traceCustomIdOnly`| false | When enabled, only trace processors and 
endpoints where the route author explicitly assigned a custom `.id()`. 
Processors without a custom id (auto-generated ids like `log1`, `setHeader2`) 
are skipped. This provides intent-based filtering — assign ids to steps that 
have business meaning, and only those produce spans.
 | `excludePatterns` | | A comma-separated list of patterns (e.g., 
`log*,direct*,setBody*`) to exclude from tracing. Spans matching these patterns 
will be disabled. If nothing is specified, no processors are excluded by 
default.
 | `includePatterns` | | A comma-separated list of patterns (e.g., 
`log*,direct*,setBody*`) to explicitly include in a trace. Spans matching these 
patterns will be enabled. If nothing is specified, all processors are included 
by default.
 | `traceHeadersInclusion`| `false` | If set to `true`, adds the generated 
telemetry `CAMEL_TRACE_ID` and `CAMEL_SPAN_ID` Exchange headers.
diff --git 
a/components/camel-telemetry-dev/src/generated/java/org/apache/camel/telemetrydev/TelemetryDevTracerConfigurer.java
 
b/components/camel-telemetry-dev/src/generated/java/org/apache/camel/telemetrydev/TelemetryDevTracerConfigurer.java
index 47fb2d5a9040..da78a684e0e8 100644
--- 
a/components/camel-telemetry-dev/src/generated/java/org/apache/camel/telemetrydev/TelemetryDevTracerConfigurer.java
+++ 
b/components/camel-telemetry-dev/src/generated/java/org/apache/camel/telemetrydev/TelemetryDevTracerConfigurer.java
@@ -33,6 +33,8 @@ public class TelemetryDevTracerConfigurer extends 
org.apache.camel.support.compo
         case "includePatterns": 
target.setIncludePatterns(property(camelContext, java.lang.String.class, 
value)); return true;
         case "spanlifecyclemanager":
         case "spanLifecycleManager": 
target.setSpanLifecycleManager(property(camelContext, 
org.apache.camel.telemetry.SpanLifecycleManager.class, value)); return true;
+        case "tracecustomidonly":
+        case "traceCustomIdOnly": 
target.setTraceCustomIdOnly(property(camelContext, boolean.class, value)); 
return true;
         case "traceformat":
         case "traceFormat": target.setTraceFormat(property(camelContext, 
java.lang.String.class, value)); return true;
         case "traceheadersinclusion":
@@ -56,6 +58,8 @@ public class TelemetryDevTracerConfigurer extends 
org.apache.camel.support.compo
         case "includePatterns": return java.lang.String.class;
         case "spanlifecyclemanager":
         case "spanLifecycleManager": return 
org.apache.camel.telemetry.SpanLifecycleManager.class;
+        case "tracecustomidonly":
+        case "traceCustomIdOnly": return boolean.class;
         case "traceformat":
         case "traceFormat": return java.lang.String.class;
         case "traceheadersinclusion":
@@ -80,6 +84,8 @@ public class TelemetryDevTracerConfigurer extends 
org.apache.camel.support.compo
         case "includePatterns": return target.getIncludePatterns();
         case "spanlifecyclemanager":
         case "spanLifecycleManager": return target.getSpanLifecycleManager();
+        case "tracecustomidonly":
+        case "traceCustomIdOnly": return target.isTraceCustomIdOnly();
         case "traceformat":
         case "traceFormat": return target.getTraceFormat();
         case "traceheadersinclusion":
diff --git 
a/components/camel-telemetry/src/main/java/org/apache/camel/telemetry/TraceProcessorsInterceptStrategy.java
 
b/components/camel-telemetry/src/main/java/org/apache/camel/telemetry/TraceProcessorsInterceptStrategy.java
index 2185881e7077..4ba143cf20d3 100644
--- 
a/components/camel-telemetry/src/main/java/org/apache/camel/telemetry/TraceProcessorsInterceptStrategy.java
+++ 
b/components/camel-telemetry/src/main/java/org/apache/camel/telemetry/TraceProcessorsInterceptStrategy.java
@@ -111,6 +111,10 @@ public class TraceProcessorsInterceptStrategy implements 
InterceptStrategy {
             if (isEndpointSending(processor)) {
                 return false;
             }
+            // when traceCustomIdOnly is enabled, only trace processors with 
an explicit .id()
+            if (tracer.isTraceCustomIdOnly() && 
!processorDefinition.hasCustomIdAssigned()) {
+                return false;
+            }
             String shortName = processorDefinition.getShortName();
             boolean enabled = isCoreProcessEnabled(shortName) || 
isCustomProcessEnabled(shortName);
             return enabled && tracer.match(processorName, 
exchange.getContext());
diff --git 
a/components/camel-telemetry/src/main/java/org/apache/camel/telemetry/Tracer.java
 
b/components/camel-telemetry/src/main/java/org/apache/camel/telemetry/Tracer.java
index f3bf066d0bcb..95c26be5dd54 100644
--- 
a/components/camel-telemetry/src/main/java/org/apache/camel/telemetry/Tracer.java
+++ 
b/components/camel-telemetry/src/main/java/org/apache/camel/telemetry/Tracer.java
@@ -59,6 +59,7 @@ public abstract class Tracer extends ServiceSupport 
implements CamelTracingServi
     private String includePatterns;
     private boolean traceProcessors;
     private boolean disableCoreProcessors;
+    private boolean traceCustomIdOnly;
     private boolean traceHeadersInclusion;
 
     private final TracingEventNotifier eventNotifier = new 
TracingEventNotifier();
@@ -127,6 +128,15 @@ public abstract class Tracer extends ServiceSupport 
implements CamelTracingServi
         this.disableCoreProcessors = disableCoreProcessors;
     }
 
+    @ManagedAttribute
+    public boolean isTraceCustomIdOnly() {
+        return traceCustomIdOnly;
+    }
+
+    public void setTraceCustomIdOnly(boolean traceCustomIdOnly) {
+        this.traceCustomIdOnly = traceCustomIdOnly;
+    }
+
     public SpanLifecycleManager getSpanLifecycleManager() {
         return this.spanLifecycleManager;
     }
diff --git 
a/components/camel-telemetry/src/test/java/org/apache/camel/telemetry/TraceCustomIdOnlyTest.java
 
b/components/camel-telemetry/src/test/java/org/apache/camel/telemetry/TraceCustomIdOnlyTest.java
new file mode 100644
index 000000000000..ea7a40fff119
--- /dev/null
+++ 
b/components/camel-telemetry/src/test/java/org/apache/camel/telemetry/TraceCustomIdOnlyTest.java
@@ -0,0 +1,116 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.telemetry;
+
+import java.util.List;
+import java.util.Map;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.CamelContextAware;
+import org.apache.camel.Exchange;
+import org.apache.camel.Processor;
+import org.apache.camel.RoutesBuilder;
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.telemetry.mock.MockSpanAdapter;
+import org.apache.camel.telemetry.mock.MockTrace;
+import org.apache.camel.telemetry.mock.MockTracer;
+import org.apache.camel.test.junit6.ExchangeTestSupport;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+public class TraceCustomIdOnlyTest extends ExchangeTestSupport {
+
+    MockTracer mockTracer;
+
+    @Override
+    protected CamelContext createCamelContext() throws Exception {
+        CamelContext context = super.createCamelContext();
+        this.mockTracer = new MockTracer();
+        mockTracer.setTraceProcessors(true);
+        mockTracer.setTraceCustomIdOnly(true);
+        CamelContextAware.trySetCamelContext(mockTracer, context);
+        mockTracer.init(context);
+        return context;
+    }
+
+    @Test
+    void testOnlyCustomIdProcessorsTraced() {
+        template.sendBody("direct:start", "my-body");
+        Map<String, MockTrace> traces = mockTracer.traces();
+        assertEquals(1, traces.size());
+        checkTrace(traces.values().iterator().next());
+    }
+
+    private void checkTrace(MockTrace trace) {
+        List<Span> spans = trace.spans();
+        // Expected spans:
+        // 1. EVENT_SENT (direct:start) — event span from sending
+        // 2. EVENT_RECEIVED (direct:start) — event span from route policy
+        // 3. EVENT_PROCESS (myProcessor) — custom .id("myProcessor") processor
+        // 4. EVENT_SENT (log:info) — event span from to("log:info")
+        // Processors WITHOUT custom id (log, setHeader) should NOT produce 
spans
+        assertEquals(4, spans.size());
+
+        MockSpanAdapter testProducer = (MockSpanAdapter) spans.get(0);
+        MockSpanAdapter direct = (MockSpanAdapter) spans.get(1);
+        MockSpanAdapter customProcessor = (MockSpanAdapter) spans.get(2);
+        MockSpanAdapter log = (MockSpanAdapter) spans.get(3);
+
+        // Validate span completion
+        assertEquals("true", testProducer.getTag("isDone"));
+        assertEquals("true", direct.getTag("isDone"));
+        assertEquals("true", customProcessor.getTag("isDone"));
+        assertEquals("true", log.getTag("isDone"));
+
+        // Validate same trace
+        assertEquals(testProducer.getTag("traceid"), direct.getTag("traceid"));
+        assertEquals(testProducer.getTag("traceid"), 
customProcessor.getTag("traceid"));
+        assertEquals(testProducer.getTag("traceid"), log.getTag("traceid"));
+
+        // Validate op types
+        assertEquals(Op.EVENT_RECEIVED.toString(), direct.getTag("op"));
+        assertEquals(Op.EVENT_PROCESS.toString(), 
customProcessor.getTag("op"));
+
+        // Validate hierarchy
+        assertNull(testProducer.getTag("parentSpan"));
+        assertEquals(testProducer.getTag("spanid"), 
direct.getTag("parentSpan"));
+        assertEquals(direct.getTag("spanid"), 
customProcessor.getTag("parentSpan"));
+    }
+
+    @Override
+    protected RoutesBuilder createRouteBuilder() {
+        return new RouteBuilder() {
+            @Override
+            public void configure() {
+                from("direct:start")
+                        .routeId("start")
+                        .log("A message")
+                        .setHeader("foo", constant("bar"))
+                        .process(new Processor() {
+                            @Override
+                            public void process(Exchange exchange) throws 
Exception {
+                                exchange.getIn().setHeader("operation", 
"fake");
+                            }
+                        }).id("myProcessor")
+                        .to("log:info");
+            }
+        };
+    }
+
+}
diff --git a/core/camel-api/src/main/java/org/apache/camel/NamedNode.java 
b/core/camel-api/src/main/java/org/apache/camel/NamedNode.java
index 2716a839829d..87578be91ca7 100644
--- a/core/camel-api/src/main/java/org/apache/camel/NamedNode.java
+++ b/core/camel-api/src/main/java/org/apache/camel/NamedNode.java
@@ -116,6 +116,15 @@ public interface NamedNode extends LineNumberAware {
         return Collections.emptyList();
     }
 
+    /**
+     * Returns whether a custom id has been assigned (vs auto-generated by 
Camel).
+     *
+     * @since 4.21
+     */
+    default boolean hasCustomIdAssigned() {
+        return false;
+    }
+
     /**
      * Special methods for Choice EIP
      */

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