Rename `http.*.duration` to `http.*.request.duration` (#9089)

instrumentation-api-semconv/src/main/java/io/opentelemetry/instrumentation/api/instrumenter/http/HttpClientMetrics.java

@@ -44,9 +44,13 @@ public final class HttpClientMetrics implements OperationListener {
   private final DoubleHistogram duration;
 
   private HttpClientMetrics(Meter meter) {
+    String durationInstrumentName =
+        HttpMetricsUtil.emitNewSemconvMetrics
+            ? "http.client.request.duration"
+            : "http.client.duration";
     duration =
         createDurationHistogram(
-            meter, "http.client.duration", "The duration of the outbound HTTP request");
+            meter, durationInstrumentName, "The duration of the outbound HTTP request");
   }
 
   @Override

instrumentation-api-semconv/src/main/java/io/opentelemetry/instrumentation/api/instrumenter/http/HttpMetricsUtil.java

@@ -19,7 +19,7 @@ import java.util.concurrent.TimeUnit;
 final class HttpMetricsUtil {
 
   // we'll use the old unit if the old semconv is in use
-  private static final boolean useSeconds =
+  static final boolean emitNewSemconvMetrics =
       SemconvStability.emitStableHttpSemconv() && !SemconvStability.emitOldHttpSemconv();
 
   static final List<Double> DURATION_SECONDS_BUCKETS =
@@ -33,9 +33,12 @@ final class HttpMetricsUtil {
 
   static DoubleHistogram createDurationHistogram(Meter meter, String name, String description) {
     DoubleHistogramBuilder durationBuilder =
-        meter.histogramBuilder(name).setUnit(useSeconds ? "s" : "ms").setDescription(description);
+        meter
+            .histogramBuilder(name)
+            .setUnit(emitNewSemconvMetrics ? "s" : "ms")
+            .setDescription(description);
     // don't set custom buckets if milliseconds are still used
-    if (useSeconds && durationBuilder instanceof ExtendedDoubleHistogramBuilder) {
+    if (emitNewSemconvMetrics && durationBuilder instanceof ExtendedDoubleHistogramBuilder) {
       ((ExtendedDoubleHistogramBuilder) durationBuilder)
           .setAdvice(advice -> advice.setExplicitBucketBoundaries(DURATION_SECONDS_BUCKETS));
     }
@@ -43,7 +46,7 @@ final class HttpMetricsUtil {
   }
 
   static double nanosToUnit(long durationNanos) {
-    return durationNanos / (useSeconds ? NANOS_PER_S : NANOS_PER_MS);
+    return durationNanos / (emitNewSemconvMetrics ? NANOS_PER_S : NANOS_PER_MS);
   }
 
   private HttpMetricsUtil() {}

instrumentation-api-semconv/src/main/java/io/opentelemetry/instrumentation/api/instrumenter/http/HttpServerMetrics.java

@@ -58,9 +58,13 @@ public final class HttpServerMetrics implements OperationListener {
             .setUnit("{requests}")
             .setDescription("The number of concurrent HTTP requests that are currently in-flight")
             .build();
+    String durationInstrumentName =
+        HttpMetricsUtil.emitNewSemconvMetrics
+            ? "http.server.request.duration"
+            : "http.server.duration";
     duration =
         createDurationHistogram(
-            meter, "http.server.duration", "The duration of the inbound HTTP request");
+            meter, durationInstrumentName, "The duration of the inbound HTTP request");
     requestSize =
         meter
             .histogramBuilder("http.server.request.size")

instrumentation-api-semconv/src/testStableHttpSemconv/java/io/opentelemetry/instrumentation/api/instrumenter/http/HttpClientMetricsStableSemconvTest.java

@@ -82,7 +82,7 @@ class HttpClientMetricsStableSemconvTest {
         .satisfiesExactlyInAnyOrder(
             metric ->
                 assertThat(metric)
-                    .hasName("http.client.duration")
+                    .hasName("http.client.request.duration")
                     .hasUnit("s")
                     .hasHistogramSatisfying(
                         histogram ->
@@ -114,7 +114,7 @@ class HttpClientMetricsStableSemconvTest {
         .satisfiesExactlyInAnyOrder(
             metric ->
                 assertThat(metric)
-                    .hasName("http.client.duration")
+                    .hasName("http.client.request.duration")
                     .hasHistogramSatisfying(
                         histogram ->
                             histogram.hasPointsSatisfying(

instrumentation-api-semconv/src/testStableHttpSemconv/java/io/opentelemetry/instrumentation/api/instrumenter/http/HttpServerMetricsStableSemconvTest.java

@@ -146,7 +146,7 @@ class HttpServerMetricsStableSemconvTest {
                                                     .hasSpanId(spanContext1.getSpanId())))),
             metric ->
                 assertThat(metric)
-                    .hasName("http.server.duration")
+                    .hasName("http.server.request.duration")
                     .hasUnit("s")
                     .hasHistogramSatisfying(
                         histogram ->
@@ -235,7 +235,7 @@ class HttpServerMetricsStableSemconvTest {
                                                     .hasSpanId(spanContext2.getSpanId())))),
             metric ->
                 assertThat(metric)
-                    .hasName("http.server.duration")
+                    .hasName("http.server.request.duration")
                     .hasHistogramSatisfying(
                         histogram ->
                             histogram.hasPointsSatisfying(
@@ -306,7 +306,7 @@ class HttpServerMetricsStableSemconvTest {
         .anySatisfy(
             metric ->
                 assertThat(metric)
-                    .hasName("http.server.duration")
+                    .hasName("http.server.request.duration")
                     .hasUnit("s")
                     .hasHistogramSatisfying(
                         histogram ->