Exporter: Start adding OC-Agent Trace Exporter. (#1455)

14 files changed, 505 insertions, 1 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e4d3af9..b3fa3020 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,13 +1,14 @@
 ## Unreleased
 - Add `AttributeValueDouble` to `AttributeValue`.
 - Add `createWithSender` to `JaegerTraceExporter` to allow use of `HttpSender`
-  with extra configurations
+  with extra configurations.
 - Add an API `Functions.returnToString()`.
 - Add `opencensus-contrib-opencensus-proto-util` that has helper utilities to convert between
   Java data models and protos.
 - Migrate to new Stackdriver Kubernetes monitored resource. This could be a breaking change
   if you are using `gke_container` resources. For more info,
   https://cloud.google.com/monitoring/kubernetes-engine/migration#incompatible
+- Add OpenCensus Java OC-Agent Trace Exporter.
 
 ## 0.16.1 - 2018-09-18
 - Fix ClassCastException in Log4j log correlation
diff --git a/RELEASING.md b/RELEASING.md
index 669fc8fa..2b4aa512 100644
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -220,6 +220,7 @@ $ README_FILES=(
   exporters/trace/instana/README.md
   exporters/trace/logging/README.md
   exporters/trace/jaeger/README.md
+  exporters/trace/ocagent/README.md
   exporters/trace/stackdriver/README.md
   exporters/trace/zipkin/README.md
   )
diff --git a/all/build.gradle b/all/build.gradle
index 072459d1..66e6a893 100644
--- a/all/build.gradle
+++ b/all/build.gradle
@@ -20,6 +20,7 @@ def subprojects = [
         project(':opencensus-contrib-spring-sleuth-v1x'),
         project(':opencensus-contrib-zpages'),
         project(':opencensus-exporter-trace-logging'),
+        project(':opencensus-exporter-trace-ocagent'),
         project(':opencensus-exporter-trace-stackdriver'),
         project(':opencensus-exporter-trace-zipkin'),
         project(':opencensus-exporter-trace-jaeger'),
@@ -46,6 +47,7 @@ def subprojects_javadoc = [
         project(':opencensus-contrib-spring-sleuth-v1x'),
         project(':opencensus-contrib-zpages'),
         project(':opencensus-exporter-trace-logging'),
+        project(':opencensus-exporter-trace-ocagent'),
         project(':opencensus-exporter-trace-stackdriver'),
         project(':opencensus-exporter-trace-zipkin'),
         project(':opencensus-exporter-trace-jaeger'),
diff --git a/build.gradle b/build.gradle
index 7754eba1..e3bcb688 100644
--- a/build.gradle
+++ b/build.gradle
@@ -432,6 +432,7 @@ subprojects {
                  'opencensus-exporter-stats-stackdriver',
                  'opencensus-exporter-trace-instana',
                  'opencensus-exporter-trace-logging',
+                 'opencensus-exporter-trace-ocagent',
                  'opencensus-exporter-trace-stackdriver',
                  'opencensus-exporter-trace-zipkin',
                  'opencensus-exporter-trace-jaeger',
diff --git a/buildscripts/import-control.xml b/buildscripts/import-control.xml
index 69a3de8e..2467e35c 100644
--- a/buildscripts/import-control.xml
+++ b/buildscripts/import-control.xml
@@ -174,6 +174,10 @@ General guidelines on imports:
         <allow pkg="io.opencensus.exporter.trace.jaeger"/>
         <allow pkg="org.apache.thrift"/>
       </subpackage>
+      <subpackage name="ocagent">
+        <allow pkg="io.opencensus.exporter.trace.ocagent"/>
+        <allow pkg="io.opencensus.proto"/>
+      </subpackage>
       <subpackage name="stackdriver">
         <allow pkg="com.google"/>
         <allow pkg="io.opencensus.exporter.trace.stackdriver"/>
diff --git a/exporters/trace/ocagent/README.md b/exporters/trace/ocagent/README.md
new file mode 100644
index 00000000..4f25bd6e
--- /dev/null
+++ b/exporters/trace/ocagent/README.md
@@ -0,0 +1,48 @@
+# OpenCensus Java OC-Agent Trace Exporter
+
+The *OpenCensus Java OC-Agent Trace Exporter* is the Java implementation of the OpenCensus Agent
+(OC-Agent) Trace Exporter.
+
+## Quickstart
+
+### Add the dependencies to your project
+
+For Maven add to your `pom.xml`:
+```xml
+<dependencies>
+  <dependency>
+    <groupId>io.opencensus</groupId>
+    <artifactId>opencensus-api</artifactId>
+    <version>0.17.0</version>
+  </dependency>
+  <dependency>
+    <groupId>io.opencensus</groupId>
+    <artifactId>opencensus-exporter-trace-ocagent</artifactId>
+    <version>0.17.0</version>
+  </dependency>
+  <dependency>
+    <groupId>io.opencensus</groupId>
+    <artifactId>opencensus-impl</artifactId>
+    <version>0.17.0</version>
+    <scope>runtime</scope>
+  </dependency>
+</dependencies>
+```
+
+For Gradle add to your dependencies:
+```gradle
+compile 'io.opencensus:opencensus-api:0.17.0'
+compile 'io.opencensus:opencensus-exporter-trace-ocagent:0.17.0'
+runtime 'io.opencensus:opencensus-impl:0.17.0'
+```
+
+### Register the exporter
+
+```java
+public class MyMainClass {
+  public static void main(String[] args) throws Exception {
+    OcAgentTraceExporter.createAndRegister();
+    // ...
+  }
+}
+```
diff --git a/exporters/trace/ocagent/build.gradle b/exporters/trace/ocagent/build.gradle
new file mode 100644
index 00000000..7214eb58
--- /dev/null
+++ b/exporters/trace/ocagent/build.gradle
@@ -0,0 +1,19 @@
+description = 'OpenCensus Java OC-Agent Trace Exporter'
+
+[compileJava, compileTestJava].each() {
+    it.sourceCompatibility = 1.7
+    it.targetCompatibility = 1.7
+}
+
+dependencies {
+    compileOnly libraries.auto_value
+
+    compile project(':opencensus-api'),
+            project(':opencensus-contrib-monitored-resource-util'),
+            libraries.opencensus_proto
+
+    testCompile project(':opencensus-api')
+
+    signature "org.codehaus.mojo.signature:java17:1.0@signature"
+    signature "net.sf.androidscents.signature:android-api-level-14:4.0_r4@signature"
+}
diff --git a/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporter.java b/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporter.java
new file mode 100644
index 00000000..c704314a
--- /dev/null
+++ b/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporter.java
@@ -0,0 +1,124 @@
+/*
+ * Copyright 2018, OpenCensus Authors
+ *
+ * Licensed 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 io.opencensus.exporter.trace.ocagent;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import com.google.common.annotations.VisibleForTesting;
+import io.opencensus.trace.Tracing;
+import io.opencensus.trace.export.SpanExporter;
+import io.opencensus.trace.export.SpanExporter.Handler;
+import javax.annotation.Nullable;
+import javax.annotation.concurrent.GuardedBy;
+import javax.annotation.concurrent.ThreadSafe;
+
+/**
+ * The implementation of the OpenCensus Agent (OC-Agent) Trace Exporter.
+ *
+ * <p>Example of usage:
+ *
+ * <pre>{@code
+ * public static void main(String[] args) {
+ *   OcAgentTraceExporter.createAndRegister();
+ *   ... // Do work.
+ * }
+ * }</pre>
+ *
+ * @since 0.17
+ */
+@ThreadSafe
+public final class OcAgentTraceExporter {
+
+  private static final Object monitor = new Object();
+  private static final String REGISTER_NAME = OcAgentTraceExporter.class.getName();
+
+  @GuardedBy("monitor")
+  @Nullable
+  private static Handler handler = null;
+
+  private OcAgentTraceExporter() {}
+
+  /**
+   * Creates a {@code OcAgentTraceExporterHandler} with default configurations and registers it to
+   * the OpenCensus library.
+   *
+   * @since 0.17
+   */
+  public static void createAndRegister() {
+    synchronized (monitor) {
+      checkState(handler == null, "OC-Agent exporter is already registered.");
+      OcAgentTraceExporterHandler newHandler = new OcAgentTraceExporterHandler();
+      registerInternal(newHandler);
+    }
+  }
+
+  /**
+   * Creates a {@code OcAgentTraceExporterHandler} with the given configurations and registers it to
+   * the OpenCensus library.
+   *
+   * @param configuration the {@code OcAgentTraceExporterConfiguration}.
+   * @since 0.17
+   */
+  public static void createAndRegister(OcAgentTraceExporterConfiguration configuration) {
+    synchronized (monitor) {
+      checkState(handler == null, "OC-Agent exporter is already registered.");
+      OcAgentTraceExporterHandler newHandler =
+          new OcAgentTraceExporterHandler(
+              configuration.getEndPoint(),
+              configuration.getServiceName(),
+              configuration.getUseInsecure());
+      registerInternal(newHandler);
+    }
+  }
+
+  /**
+   * Registers the {@code OcAgentTraceExporterHandler}.
+   *
+   * @param spanExporter the instance of the {@code SpanExporter} where this service is registered.
+   */
+  @VisibleForTesting
+  static void register(SpanExporter spanExporter, Handler handler) {
+    spanExporter.registerHandler(REGISTER_NAME, handler);
+  }
+
+  private static void registerInternal(Handler newHandler) {
+    synchronized (monitor) {
+      handler = newHandler;
+      register(Tracing.getExportComponent().getSpanExporter(), newHandler);
+    }
+  }
+
+  /**
+   * Unregisters the OC-Agent exporter from the OpenCensus library.
+   *
+   * @since 0.17
+   */
+  public static void unregister() {
+    unregister(Tracing.getExportComponent().getSpanExporter());
+  }
+
+  /**
+   * Unregisters the {@code OcAgentTraceExporterHandler}.
+   *
+   * @param spanExporter the instance of the {@code SpanExporter} from where this service is
+   *     unregistered.
+   */
+  @VisibleForTesting
+  static void unregister(SpanExporter spanExporter) {
+    spanExporter.unregisterHandler(REGISTER_NAME);
+  }
+}
diff --git a/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterConfiguration.java b/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterConfiguration.java
new file mode 100644
index 00000000..0800eff6
--- /dev/null
+++ b/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterConfiguration.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2018, OpenCensus Authors
+ *
+ * Licensed 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 io.opencensus.exporter.trace.ocagent;
+
+import com.google.auto.value.AutoValue;
+import javax.annotation.Nullable;
+import javax.annotation.concurrent.Immutable;
+
+/**
+ * Configurations for {@link OcAgentTraceExporter}.
+ *
+ * @since 0.17
+ */
+@AutoValue
+@Immutable
+public abstract class OcAgentTraceExporterConfiguration {
+
+  OcAgentTraceExporterConfiguration() {}
+
+  /**
+   * Returns the end point of OC-Agent. The end point can be dns, ip:port, etc.
+   *
+   * @return the end point of OC-Agent.
+   * @since 0.17
+   */
+  @Nullable
+  public abstract String getEndPoint();
+
+  /**
+   * Returns whether to disable client transport security for the exporter's gRPC connection or not.
+   *
+   * @return whether to disable client transport security for the exporter's gRPC connection or not.
+   * @since 0.17
+   */
+  @Nullable
+  public abstract Boolean getUseInsecure();
+
+  /**
+   * Returns the service name to be used for this {@link OcAgentTraceExporter}.
+   *
+   * @return the service name.
+   * @since 0.17
+   */
+  @Nullable
+  public abstract String getServiceName();
+
+  /**
+   * Returns a new {@link Builder}.
+   *
+   * @return a {@code Builder}.
+   * @since 0.17
+   */
+  public static Builder builder() {
+    return new AutoValue_OcAgentTraceExporterConfiguration.Builder();
+  }
+
+  /**
+   * Builder for {@link OcAgentTraceExporterConfiguration}.
+   *
+   * @since 0.17
+   */
+  @AutoValue.Builder
+  public abstract static class Builder {
+
+    Builder() {}
+
+    /**
+     * Sets the end point of OC-Agent server.
+     *
+     * @param endPoint the end point of OC-Agent.
+     * @return this.
+     * @since 0.17
+     */
+    public abstract Builder setEndPoint(String endPoint);
+
+    /**
+     * Sets whether to disable client transport security for the exporter's gRPC connection or not.
+     *
+     * @param useInsecure whether disable client transport security for the exporter's gRPC
+     *     connection.
+     * @return this.
+     * @since 0.17
+     */
+    public abstract Builder setUseInsecure(Boolean useInsecure);
+
+    /**
+     * Sets the service name to be used for this {@link OcAgentTraceExporter}.
+     *
+     * @param serviceName the service name.
+     * @return this.
+     * @since 0.17
+     */
+    public abstract Builder setServiceName(String serviceName);
+
+    /**
+     * Builds a {@link OcAgentTraceExporterConfiguration}.
+     *
+     * @return a {@code OcAgentTraceExporterConfiguration}.
+     * @since 0.17
+     */
+    public abstract OcAgentTraceExporterConfiguration build();
+  }
+}
diff --git a/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterHandler.java b/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterHandler.java
new file mode 100644
index 00000000..27e56c66
--- /dev/null
+++ b/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterHandler.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2018, OpenCensus Authors
+ *
+ * Licensed 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 io.opencensus.exporter.trace.ocagent;
+
+import io.opencensus.trace.export.SpanData;
+import io.opencensus.trace.export.SpanExporter.Handler;
+import java.util.Collection;
+import javax.annotation.Nullable;
+
+/** Exporting handler for OC-Agent Tracing. */
+final class OcAgentTraceExporterHandler extends Handler {
+
+  private static final String DEFAULT_END_POINT = "localhost:55678";
+  private static final String DEFAULT_SERVICE_NAME = "OpenCensus";
+
+  // private final String endPoint;
+  // private final String serviceName;
+  // private final boolean useInsecure;
+
+  OcAgentTraceExporterHandler() {
+    this(null, null, null);
+  }
+
+  OcAgentTraceExporterHandler(
+      @Nullable String endPoint, @Nullable String serviceName, @Nullable Boolean useInsecure) {
+    // this.endPoint = endPoint == null ? DEFAULT_END_POINT : endPoint;
+    // this.serviceName = serviceName == null ? DEFAULT_SERVICE_NAME : serviceName;
+    // this.useInsecure = useInsecure == null ? false : useInsecure;
+  }
+
+  @Override
+  public void export(Collection<SpanData> spanDataList) {
+    // TODO(songya): implement this.
+    // for (SpanData spanData : spanDataList) {
+    // }
+  }
+}
diff --git a/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/package-info.java b/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/package-info.java
new file mode 100644
index 00000000..d01dd7eb
--- /dev/null
+++ b/exporters/trace/ocagent/src/main/java/io/opencensus/exporter/trace/ocagent/package-info.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2018, OpenCensus Authors
+ *
+ * Licensed 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.
+ */
+
+/**
+ * This package contains the Java implementation of the OpenCensus Agent (OC-Agent) Trace Exporter.
+ *
+ * <p>WARNING: Currently all the public classes under this package are marked as {@link
+ * io.opencensus.common.ExperimentalApi}. The classes and APIs under {@link
+ * io.opencensus.exporter.trace.ocagent} are likely to get backwards-incompatible updates in the
+ * future. DO NOT USE except for experimental purposes.
+ *
+ * <p>See more details on
+ * https://github.com/census-instrumentation/opencensus-proto/tree/master/src/opencensus/proto/agent.
+ */
+@io.opencensus.common.ExperimentalApi
+package io.opencensus.exporter.trace.ocagent;
diff --git a/exporters/trace/ocagent/src/test/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterConfigurationTest.java b/exporters/trace/ocagent/src/test/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterConfigurationTest.java
new file mode 100644
index 00000000..4349dfd7
--- /dev/null
+++ b/exporters/trace/ocagent/src/test/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterConfigurationTest.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2018, OpenCensus Authors
+ *
+ * Licensed 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 io.opencensus.exporter.trace.ocagent;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/** Unit tests for {@link OcAgentTraceExporterConfiguration}. */
+@RunWith(JUnit4.class)
+public class OcAgentTraceExporterConfigurationTest {
+
+  @Test
+  public void defaultConfiguration() {
+    OcAgentTraceExporterConfiguration configuration =
+        OcAgentTraceExporterConfiguration.builder().build();
+    assertThat(configuration.getEndPoint()).isNull();
+    assertThat(configuration.getServiceName()).isNull();
+    assertThat(configuration.getUseInsecure()).isNull();
+  }
+
+  @Test
+  public void setAndGet() {
+    OcAgentTraceExporterConfiguration configuration =
+        OcAgentTraceExporterConfiguration.builder()
+            .setEndPoint("192.168.0.1:50051")
+            .setServiceName("service")
+            .setUseInsecure(true)
+            .build();
+    assertThat(configuration.getEndPoint()).isEqualTo("192.168.0.1:50051");
+    assertThat(configuration.getServiceName()).isEqualTo("service");
+    assertThat(configuration.getUseInsecure()).isTrue();
+  }
+}
diff --git a/exporters/trace/ocagent/src/test/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterTest.java b/exporters/trace/ocagent/src/test/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterTest.java
new file mode 100644
index 00000000..c58acdb1
--- /dev/null
+++ b/exporters/trace/ocagent/src/test/java/io/opencensus/exporter/trace/ocagent/OcAgentTraceExporterTest.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2018, OpenCensus Authors
+ *
+ * Licensed 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 io.opencensus.exporter.trace.ocagent;
+
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.verify;
+
+import io.opencensus.trace.export.SpanExporter;
+import io.opencensus.trace.export.SpanExporter.Handler;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+/** Unit tests for {@link OcAgentTraceExporter}. */
+@RunWith(JUnit4.class)
+public class OcAgentTraceExporterTest {
+  @Mock private SpanExporter spanExporter;
+  @Mock private Handler handler;
+
+  @Before
+  public void setUp() {
+    MockitoAnnotations.initMocks(this);
+  }
+
+  @Test
+  public void registerUnregisterOcAgentTraceExporter() {
+    OcAgentTraceExporter.register(spanExporter, handler);
+    verify(spanExporter)
+        .registerHandler(
+            eq("io.opencensus.exporter.trace.ocagent.OcAgentTraceExporter"),
+            any(OcAgentTraceExporterHandler.class));
+    OcAgentTraceExporter.unregister(spanExporter);
+    verify(spanExporter)
+        .unregisterHandler(eq("io.opencensus.exporter.trace.ocagent.OcAgentTraceExporter"));
+  }
+}
diff --git a/settings.gradle b/settings.gradle
index dda7557f..409d3147 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -7,6 +7,7 @@ include ":opencensus-impl"
 include ":opencensus-testing"
 include ":opencensus-exporter-trace-instana"
 include ":opencensus-exporter-trace-logging"
+include ":opencensus-exporter-trace-ocagent"
 include ":opencensus-exporter-trace-stackdriver"
 include ":opencensus-exporter-trace-zipkin"
 include ":opencensus-exporter-trace-jaeger"
@@ -59,6 +60,8 @@ project(':opencensus-exporter-trace-instana').projectDir =
         "$rootDir/exporters/trace/instana" as File
 project(':opencensus-exporter-trace-logging').projectDir =
         "$rootDir/exporters/trace/logging" as File
+project(':opencensus-exporter-trace-ocagent').projectDir =
+        "$rootDir/exporters/trace/ocagent" as File
 project(':opencensus-exporter-trace-stackdriver').projectDir =
         "$rootDir/exporters/trace/stackdriver" as File
 project(':opencensus-exporter-trace-zipkin').projectDir = "$rootDir/exporters/trace/zipkin" as File