1 files changed, 61 insertions, 0 deletions
diff --git a/simplemetrics/src/main/java/com/yahoo/metrics/simple/jdisc/JdiscMetricsFactory.java b/simplemetrics/src/main/java/com/yahoo/metrics/simple/jdisc/JdiscMetricsFactory.java
new file mode 100644
index 00000000000..f5208b2226c
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+++ b/simplemetrics/src/main/java/com/yahoo/metrics/simple/jdisc/JdiscMetricsFactory.java
@@ -0,0 +1,61 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.metrics.simple.jdisc;
+
+import java.io.PrintStream;
+import java.util.logging.Logger;
+
+import com.yahoo.container.jdisc.MetricConsumerFactory;
+import com.yahoo.container.jdisc.state.MetricSnapshot;
+import com.yahoo.container.jdisc.state.SnapshotProvider;
+import com.yahoo.jdisc.application.MetricConsumer;
+import com.yahoo.metrics.simple.Bucket;
+import com.yahoo.metrics.simple.MetricReceiver;
+
+/**
+ * A factory for all the JDisc API classes.
+ *
+ * @author <a href="mailto:steinar@yahoo-inc.com">Steinar Knutsen</a>
+ */
+public class JdiscMetricsFactory implements MetricConsumerFactory, SnapshotProvider {
+    private static final Logger log = Logger.getLogger(JdiscMetricsFactory.class.getName());
+    private final SimpleMetricConsumer metricInstance;
+    private final MetricReceiver metricReceiver;
+
+    public JdiscMetricsFactory(MetricReceiver receiver) {
+        this.metricReceiver = receiver;
+        this.metricInstance = new SimpleMetricConsumer(receiver);
+    }
+
+    @Override
+    public MetricConsumer newInstance() {
+        // the underlying implementation is thread safe anyway to allow for stand-alone use
+        return metricInstance;
+    }
+
+
+    @Override
+    public MetricSnapshot latestSnapshot() {
+        Bucket curr = metricReceiver.getSnapshot();
+        if (curr == null) {
+            log.warning("no snapshot from instance of " + metricInstance.getClass());
+            return null;
+        } else {
+            SnapshotConverter converter = new SnapshotConverter(curr);
+            return converter.convert();
+        }
+    }
+
+    @Override
+    public void histogram(PrintStream output) {
+        Bucket curr = metricReceiver.getSnapshot();
+        if (curr == null) {
+            log.warning("no snapshot from instance of " + metricInstance.getClass());
+            return;
+        } else {
+            SnapshotConverter converter = new SnapshotConverter(curr);
+            converter.outputHistograms(output);
+            return;
+        }
+    }
+
+}