1 files changed, 93 insertions, 0 deletions
diff --git a/impl_core/src/main/java/io/opencensus/implcore/trace/export/ExportComponentImpl.java b/impl_core/src/main/java/io/opencensus/implcore/trace/export/ExportComponentImpl.java
new file mode 100644
index 00000000..19817380
--- /dev/null
+++ b/impl_core/src/main/java/io/opencensus/implcore/trace/export/ExportComponentImpl.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2017, 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.implcore.trace.export;
+
+import io.opencensus.common.Duration;
+import io.opencensus.implcore.internal.EventQueue;
+import io.opencensus.trace.export.ExportComponent;
+import io.opencensus.trace.export.RunningSpanStore;
+import io.opencensus.trace.export.SampledSpanStore;
+
+/** Implementation of the {@link ExportComponent}. */
+public final class ExportComponentImpl extends ExportComponent {
+  private static final int EXPORTER_BUFFER_SIZE = 32;
+  // Enforces that trace export exports data at least once every 5 seconds.
+  private static final Duration EXPORTER_SCHEDULE_DELAY = Duration.create(5, 0);
+
+  private final SpanExporterImpl spanExporter;
+  private final RunningSpanStoreImpl runningSpanStore;
+  private final SampledSpanStoreImpl sampledSpanStore;
+
+  @Override
+  public SpanExporterImpl getSpanExporter() {
+    return spanExporter;
+  }
+
+  @Override
+  public RunningSpanStoreImpl getRunningSpanStore() {
+    return runningSpanStore;
+  }
+
+  @Override
+  public SampledSpanStoreImpl getSampledSpanStore() {
+    return sampledSpanStore;
+  }
+
+  @Override
+  public void shutdown() {
+    sampledSpanStore.shutdown();
+    spanExporter.shutdown();
+  }
+
+  /**
+   * Returns a new {@code ExportComponentImpl} that has valid instances for {@link RunningSpanStore}
+   * and {@link SampledSpanStore}.
+   *
+   * @return a new {@code ExportComponentImpl}.
+   */
+  public static ExportComponentImpl createWithInProcessStores(EventQueue eventQueue) {
+    return new ExportComponentImpl(true, eventQueue);
+  }
+
+  /**
+   * Returns a new {@code ExportComponentImpl} that has {@code null} instances for {@link
+   * RunningSpanStore} and {@link SampledSpanStore}.
+   *
+   * @return a new {@code ExportComponentImpl}.
+   */
+  public static ExportComponentImpl createWithoutInProcessStores(EventQueue eventQueue) {
+    return new ExportComponentImpl(false, eventQueue);
+  }
+
+  /**
+   * Constructs a new {@code ExportComponentImpl}.
+   *
+   * @param supportInProcessStores {@code true} to instantiate {@link RunningSpanStore} and {@link
+   *     SampledSpanStore}.
+   */
+  private ExportComponentImpl(boolean supportInProcessStores, EventQueue eventQueue) {
+    this.spanExporter = SpanExporterImpl.create(EXPORTER_BUFFER_SIZE, EXPORTER_SCHEDULE_DELAY);
+    this.runningSpanStore =
+        supportInProcessStores
+            ? new InProcessRunningSpanStoreImpl()
+            : RunningSpanStoreImpl.getNoopRunningSpanStoreImpl();
+    this.sampledSpanStore =
+        supportInProcessStores
+            ? new InProcessSampledSpanStoreImpl(eventQueue)
+            : SampledSpanStoreImpl.getNoopSampledSpanStoreImpl();
+  }
+}