update the examples for 0.16.0 (#2780)

examples/build.gradle

@@ -15,8 +15,8 @@ subprojects {
     version = "0.1.0-SNAPSHOT"
 
     ext {
-        openTelemetryVersion = "0.15.0"
+        openTelemetryVersion = "0.16.0"
-        openTelemetryAlphaVersion = "0.15.0-alpha"
+        openTelemetryAlphaVersion = "0.16.0-alpha"
         grpcVersion = '1.34.1'
         protobufVersion = '3.11.4'
         protocVersion = protobufVersion

examples/grpc/src/main/java/io/opentelemetry/example/grpc/HelloWorldClient.java

@@ -18,6 +18,7 @@ import io.grpc.MethodDescriptor;
 import io.grpc.StatusRuntimeException;
 import io.opentelemetry.api.OpenTelemetry;
 import io.opentelemetry.api.trace.Span;
+import io.opentelemetry.api.trace.SpanKind;
 import io.opentelemetry.api.trace.StatusCode;
 import io.opentelemetry.api.trace.Tracer;
 import io.opentelemetry.context.Context;
@@ -75,7 +76,7 @@ public class HelloWorldClient {
 
     // Start a span
     Span span =
-        tracer.spanBuilder("helloworld.Greeter/SayHello").setSpanKind(Span.Kind.CLIENT).startSpan();
+        tracer.spanBuilder("helloworld.Greeter/SayHello").setSpanKind(SpanKind.CLIENT).startSpan();
     span.setAttribute("component", "grpc");
     span.setAttribute("rpc.service", "Greeter");
     span.setAttribute("net.peer.ip", this.serverHostname);

examples/grpc/src/main/java/io/opentelemetry/example/grpc/HelloWorldClientStream.java

@@ -19,6 +19,7 @@ import io.grpc.StatusRuntimeException;
 import io.grpc.stub.StreamObserver;
 import io.opentelemetry.api.OpenTelemetry;
 import io.opentelemetry.api.trace.Span;
+import io.opentelemetry.api.trace.SpanKind;
 import io.opentelemetry.api.trace.StatusCode;
 import io.opentelemetry.api.trace.Tracer;
 import io.opentelemetry.api.trace.propagation.W3CTraceContextPropagator;
@@ -85,7 +86,7 @@ public class HelloWorldClientStream {
 
     // Start a span
     Span span =
-        tracer.spanBuilder("helloworld.Greeter/SayHello").setSpanKind(Span.Kind.CLIENT).startSpan();
+        tracer.spanBuilder("helloworld.Greeter/SayHello").setSpanKind(SpanKind.CLIENT).startSpan();
     span.setAttribute("component", "grpc");
     span.setAttribute(SemanticAttributes.RPC_SERVICE, "Greeter");
     span.setAttribute(SemanticAttributes.NET_HOST_IP, this.serverHostname);

examples/grpc/src/main/java/io/opentelemetry/example/grpc/HelloWorldServer.java

@@ -16,6 +16,7 @@ import io.grpc.ServerCallHandler;
 import io.grpc.stub.StreamObserver;
 import io.opentelemetry.api.OpenTelemetry;
 import io.opentelemetry.api.trace.Span;
+import io.opentelemetry.api.trace.SpanKind;
 import io.opentelemetry.api.trace.Tracer;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.Scope;
@@ -143,7 +144,7 @@ public class HelloWorldServer {
           tracer
               .spanBuilder("helloworld.Greeter/SayHello")
               .setParent(extractedContext)
-              .setSpanKind(Span.Kind.SERVER)
+              .setSpanKind(SpanKind.SERVER)
               .startSpan();
       try (Scope innerScope = span.makeCurrent()) {
         span.setAttribute("component", "grpc");

examples/http/src/main/java/io/opentelemetry/example/http/HttpClient.java

@@ -7,6 +7,7 @@ package io.opentelemetry.example.http;
 
 import io.opentelemetry.api.OpenTelemetry;
 import io.opentelemetry.api.trace.Span;
+import io.opentelemetry.api.trace.SpanKind;
 import io.opentelemetry.api.trace.StatusCode;
 import io.opentelemetry.api.trace.Tracer;
 import io.opentelemetry.context.Context;
@@ -47,7 +48,7 @@ public class HttpClient {
 
     // Name convention for the Span is not yet defined.
     // See: https://github.com/open-telemetry/opentelemetry-specification/issues/270
-    Span span = tracer.spanBuilder("/").setSpanKind(Span.Kind.CLIENT).startSpan();
+    Span span = tracer.spanBuilder("/").setSpanKind(SpanKind.CLIENT).startSpan();
     try (Scope scope = span.makeCurrent()) {
       span.setAttribute(SemanticAttributes.HTTP_METHOD, "GET");
       span.setAttribute("component", "http");

examples/http/src/main/java/io/opentelemetry/example/http/HttpServer.java

@@ -12,6 +12,7 @@ import com.sun.net.httpserver.HttpHandler;
 import io.opentelemetry.api.OpenTelemetry;
 import io.opentelemetry.api.common.Attributes;
 import io.opentelemetry.api.trace.Span;
+import io.opentelemetry.api.trace.SpanKind;
 import io.opentelemetry.api.trace.Tracer;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.Scope;
@@ -71,7 +72,7 @@ public class HttpServer {
       Context context = TEXT_MAP_PROPAGATOR.extract(Context.current(), exchange, getter);
 
       Span span =
-          tracer.spanBuilder("GET /").setParent(context).setSpanKind(Span.Kind.SERVER).startSpan();
+          tracer.spanBuilder("GET /").setParent(context).setSpanKind(SpanKind.SERVER).startSpan();
 
       try (Scope scope = span.makeCurrent()) {
         // Set the Semantic Convention

examples/metrics/src/main/java/io/opentelemetry/example/metrics/DoubleCounterExample.java

@@ -1,13 +1,13 @@
 package io.opentelemetry.example.metrics;
 
-import io.opentelemetry.api.DefaultOpenTelemetry;
+import io.opentelemetry.api.GlobalOpenTelemetry;
 import io.opentelemetry.api.OpenTelemetry;
-import io.opentelemetry.api.common.Labels;
 import io.opentelemetry.api.metrics.DoubleCounter;
 import io.opentelemetry.api.metrics.GlobalMetricsProvider;
 import io.opentelemetry.api.metrics.Meter;
+import io.opentelemetry.api.metrics.common.Labels;
 import io.opentelemetry.api.trace.Span;
-import io.opentelemetry.api.trace.Span.Kind;
+import io.opentelemetry.api.trace.SpanKind;
 import io.opentelemetry.api.trace.StatusCode;
 import io.opentelemetry.api.trace.Tracer;
 import io.opentelemetry.context.Scope;
@@ -21,7 +21,7 @@ import javax.swing.filechooser.FileSystemView;
  * extensions.
  */
 public class DoubleCounterExample {
-  private static final OpenTelemetry openTelemetry = DefaultOpenTelemetry.builder().build();
+  private static final OpenTelemetry openTelemetry = GlobalOpenTelemetry.get();
   private static final Tracer tracer =
       openTelemetry.getTracer("io.opentelemetry.example.metrics", "0.13.1");
   private static final Meter sampleMeter =
@@ -36,7 +36,7 @@ public class DoubleCounterExample {
           .build();
 
   public static void main(String[] args) {
-    Span span = tracer.spanBuilder("calculate space").setSpanKind(Kind.INTERNAL).startSpan();
+    Span span = tracer.spanBuilder("calculate space").setSpanKind(SpanKind.INTERNAL).startSpan();
     DoubleCounterExample example = new DoubleCounterExample();
     try (Scope scope = span.makeCurrent()) {
       List<String> extensionsToFind = new ArrayList<>();

examples/metrics/src/main/java/io/opentelemetry/example/metrics/LongCounterExample.java

@@ -1,14 +1,14 @@
 package io.opentelemetry.example.metrics;
 
-import io.opentelemetry.api.DefaultOpenTelemetry;
+import io.opentelemetry.api.GlobalOpenTelemetry;
 import io.opentelemetry.api.OpenTelemetry;
-import io.opentelemetry.api.common.Labels;
 import io.opentelemetry.api.metrics.BoundLongCounter;
 import io.opentelemetry.api.metrics.GlobalMetricsProvider;
 import io.opentelemetry.api.metrics.LongCounter;
 import io.opentelemetry.api.metrics.Meter;
+import io.opentelemetry.api.metrics.common.Labels;
 import io.opentelemetry.api.trace.Span;
-import io.opentelemetry.api.trace.Span.Kind;
+import io.opentelemetry.api.trace.SpanKind;
 import io.opentelemetry.api.trace.StatusCode;
 import io.opentelemetry.api.trace.Tracer;
 import io.opentelemetry.context.Scope;
@@ -19,7 +19,7 @@ import javax.swing.filechooser.FileSystemView;
  * Example of using {@link LongCounter} and {@link BoundLongCounter} to count searched directories.
  */
 public class LongCounterExample {
-  private static final OpenTelemetry openTelemetry = DefaultOpenTelemetry.builder().build();
+  private static final OpenTelemetry openTelemetry = GlobalOpenTelemetry.get();
   private static final Tracer tracer =
       openTelemetry.getTracer("io.opentelemetry.example.metrics", "0.13.1");
 
@@ -37,7 +37,7 @@ public class LongCounterExample {
       directoryCounter.bind(Labels.of("root directory", homeDirectory.getName()));
 
   public static void main(String[] args) {
-    Span span = tracer.spanBuilder("workflow").setSpanKind(Kind.INTERNAL).startSpan();
+    Span span = tracer.spanBuilder("workflow").setSpanKind(SpanKind.INTERNAL).startSpan();
     LongCounterExample example = new LongCounterExample();
     try (Scope scope = span.makeCurrent()) {
       homeDirectoryCounter.add(1); // count root directory

examples/metrics/src/main/java/io/opentelemetry/example/metrics/LongValueObserverExample.java

@@ -1,9 +1,9 @@
 package io.opentelemetry.example.metrics;
 
-import io.opentelemetry.api.common.Labels;
 import io.opentelemetry.api.metrics.GlobalMetricsProvider;
 import io.opentelemetry.api.metrics.LongValueObserver;
 import io.opentelemetry.api.metrics.Meter;
+import io.opentelemetry.api.metrics.common.Labels;
 
 /**
  * Example of using {@link LongValueObserver} to measure execution time of method. Setting the

examples/prometheus/src/main/java/io/opentelemetry/example/prometheus/PrometheusExample.java

@@ -1,9 +1,9 @@
 package io.opentelemetry.example.prometheus;
 
-import io.opentelemetry.api.common.Labels;
 import io.opentelemetry.api.metrics.LongValueObserver;
 import io.opentelemetry.api.metrics.Meter;
 import io.opentelemetry.api.metrics.MeterProvider;
+import io.opentelemetry.api.metrics.common.Labels;
 import io.opentelemetry.exporter.prometheus.PrometheusCollector;
 import io.prometheus.client.exporter.HTTPServer;
 import java.io.IOException;

examples/sdk-usage/src/main/java/io/opentelemetry/sdk/example/ConfigureTraceExample.java

@@ -7,13 +7,13 @@ package io.opentelemetry.sdk.example;
 
 import io.opentelemetry.api.common.Attributes;
 import io.opentelemetry.api.trace.Span;
-import io.opentelemetry.api.trace.Span.Kind;
+import io.opentelemetry.api.trace.SpanKind;
 import io.opentelemetry.api.trace.Tracer;
 import io.opentelemetry.context.Context;
 import io.opentelemetry.exporter.logging.LoggingSpanExporter;
 import io.opentelemetry.sdk.OpenTelemetrySdk;
 import io.opentelemetry.sdk.trace.SdkTracerProvider;
-import io.opentelemetry.sdk.trace.config.TraceConfig;
+import io.opentelemetry.sdk.trace.SpanLimits;
 import io.opentelemetry.sdk.trace.data.LinkData;
 import io.opentelemetry.sdk.trace.export.SimpleSpanProcessor;
 import io.opentelemetry.sdk.trace.samplers.Sampler;
@@ -22,13 +22,13 @@ import io.opentelemetry.sdk.trace.samplers.SamplingResult;
 import java.util.List;
 
 /**
- * This example demonstrates various {@link TraceConfig} options and how to configure them into an
+ * This example demonstrates various {@link SpanLimits} options and how to configure them into an
  * SDK.
  */
 class ConfigureTraceExample {
 
   public static void main(String[] args) {
-    // TraceConfig handles the tracing configuration
+    // SpanLimits handles the tracing configuration
 
     OpenTelemetrySdk openTelemetrySdk =
         OpenTelemetrySdk.builder()
@@ -38,7 +38,7 @@ class ConfigureTraceExample {
                     .build())
             .build();
 
-    printTraceConfig(openTelemetrySdk);
+    printSpanLimits(openTelemetrySdk);
     Tracer tracer = openTelemetrySdk.getTracer("ConfigureTraceExample");
 
     // OpenTelemetry has a maximum of 32 Attributes by default for Spans, Links, and Events.
@@ -49,18 +49,18 @@ class ConfigureTraceExample {
 
     // The configuration can be changed in the trace provider.
     // For example, we can change the maximum number of Attributes per span to 1.
-    TraceConfig newConf = TraceConfig.builder().setMaxNumberOfAttributes(1).build();
+    SpanLimits newConf = SpanLimits.builder().setMaxNumberOfAttributes(1).build();
 
     openTelemetrySdk =
         OpenTelemetrySdk.builder()
             .setTracerProvider(
                 SdkTracerProvider.builder()
                     .addSpanProcessor(SimpleSpanProcessor.create(new LoggingSpanExporter()))
-                    .setTraceConfig(newConf)
+                    .setSpanLimits(newConf)
                     .build())
             .build();
 
-    printTraceConfig(openTelemetrySdk);
+    printSpanLimits(openTelemetrySdk);
 
     // If more attributes than allowed by the configuration are set, they are dropped.
     Span singleAttrSpan = tracer.spanBuilder("Example Span Attributes").startSpan();
@@ -84,7 +84,7 @@ class ConfigureTraceExample {
                     .build())
             .build();
 
-    printTraceConfig(openTelemetrySdk);
+    printSpanLimits(openTelemetrySdk);
 
     tracer = openTelemetrySdk.getTracer("ConfigureTraceExample");
     tracer.spanBuilder("Not forwarded to any processors").startSpan().end();
@@ -99,7 +99,7 @@ class ConfigureTraceExample {
                     .setSampler(Sampler.alwaysOn())
                     .build())
             .build();
-    printTraceConfig(openTelemetrySdk);
+    printSpanLimits(openTelemetrySdk);
 
     tracer = openTelemetrySdk.getTracer("ConfigureTraceExample");
     tracer.spanBuilder("Forwarded to all processors").startSpan().end();
@@ -116,7 +116,7 @@ class ConfigureTraceExample {
                     .setSampler(traceIdRatioBased)
                     .build())
             .build();
-    printTraceConfig(openTelemetrySdk);
+    printSpanLimits(openTelemetrySdk);
 
     tracer = openTelemetrySdk.getTracer("ConfigureTraceExample");
 
@@ -136,7 +136,7 @@ class ConfigureTraceExample {
           Context parentContext,
           String traceId,
           String name,
-          Kind spanKind,
+          SpanKind spanKind,
           Attributes attributes,
           List<LinkData> parentLinks) {
         return SamplingResult.create(
@@ -158,7 +158,7 @@ class ConfigureTraceExample {
                     .setSampler(new MySampler())
                     .build())
             .build();
-    printTraceConfig(openTelemetrySdk);
+    printSpanLimits(openTelemetrySdk);
 
     tracer = openTelemetrySdk.getTracer("ConfigureTraceExample");
 
@@ -175,8 +175,8 @@ class ConfigureTraceExample {
     tracer.spanBuilder("#5").startSpan().end();
   }
 
-  private static void printTraceConfig(OpenTelemetrySdk sdk) {
+  private static void printSpanLimits(OpenTelemetrySdk sdk) {
-    TraceConfig config = sdk.getSdkTracerProvider().getActiveTraceConfig();
+    SpanLimits config = sdk.getSdkTracerProvider().getSpanLimits();
     System.err.println("==================================");
     System.err.print("Max number of attributes: ");
     System.err.println(config.getMaxNumberOfAttributes());