1 files changed, 55 insertions, 0 deletions
diff --git a/api/src/main/java/io/opencensus/trace/samplers/AlwaysSampleSampler.java b/api/src/main/java/io/opencensus/trace/samplers/AlwaysSampleSampler.java
new file mode 100644
index 00000000..7b61e235
--- /dev/null
+++ b/api/src/main/java/io/opencensus/trace/samplers/AlwaysSampleSampler.java
@@ -0,0 +1,55 @@
+/*
+ * 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.trace.samplers;
+
+import io.opencensus.trace.Sampler;
+import io.opencensus.trace.Span;
+import io.opencensus.trace.SpanContext;
+import io.opencensus.trace.SpanId;
+import io.opencensus.trace.TraceId;
+import java.util.List;
+import javax.annotation.Nullable;
+import javax.annotation.concurrent.Immutable;
+
+/** Sampler that always makes a "yes" decision on {@link Span} sampling. */
+@Immutable
+final class AlwaysSampleSampler extends Sampler {
+
+  AlwaysSampleSampler() {}
+
+  // Returns always makes a "yes" decision on {@link Span} sampling.
+  @Override
+  public boolean shouldSample(
+      @Nullable SpanContext parentContext,
+      @Nullable Boolean hasRemoteParent,
+      TraceId traceId,
+      SpanId spanId,
+      String name,
+      List<Span> parentLinks) {
+    return true;
+  }
+
+  @Override
+  public String getDescription() {
+    return toString();
+  }
+
+  @Override
+  public String toString() {
+    return "AlwaysSampleSampler";
+  }
+}