1 files changed, 85 insertions, 0 deletions
diff --git a/container-core/src/main/java/com/yahoo/jdisc/http/server/jetty/RequestMetricReporter.java b/container-core/src/main/java/com/yahoo/jdisc/http/server/jetty/RequestMetricReporter.java
new file mode 100644
index 00000000000..7596be0415a
--- /dev/null
+++ b/container-core/src/main/java/com/yahoo/jdisc/http/server/jetty/RequestMetricReporter.java
@@ -0,0 +1,85 @@
+// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.jdisc.http.server.jetty;
+
+import com.yahoo.jdisc.Metric;
+import com.yahoo.jdisc.Metric.Context;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+
+
+/**
+ * Responsible for metric reporting for JDisc http request handler support.
+ * @author Tony Vaagenes
+ */
+class RequestMetricReporter {
+    private final Metric metric;
+    private final Context context;
+
+    private final long requestStartTime;
+
+    //TODO: rename
+    private final AtomicBoolean firstSetOfTimeToFirstByte = new AtomicBoolean(true);
+
+
+    RequestMetricReporter(Metric metric, Context context, long requestStartTime) {
+        this.metric = metric;
+        this.context = context;
+        this.requestStartTime = requestStartTime;
+    }
+
+    void successfulWrite(int numBytes) {
+        setTimeToFirstByteFirstTime();
+
+        metric.add(MetricDefinitions.NUM_SUCCESSFUL_WRITES, 1, context);
+        metric.set(MetricDefinitions.NUM_BYTES_SENT, numBytes, context);
+    }
+
+    private void setTimeToFirstByteFirstTime() {
+        boolean isFirstWrite = firstSetOfTimeToFirstByte.getAndSet(false);
+        if (isFirstWrite) {
+            long timeToFirstByte = getRequestLatency();
+            metric.set(MetricDefinitions.TIME_TO_FIRST_BYTE, timeToFirstByte, context);
+        }
+    }
+
+    void failedWrite() {
+        metric.add(MetricDefinitions.NUM_FAILED_WRITES, 1, context);
+    }
+
+    void successfulResponse() {
+        setTimeToFirstByteFirstTime();
+
+        long requestLatency = getRequestLatency();
+
+        metric.set(MetricDefinitions.TOTAL_SUCCESSFUL_LATENCY, requestLatency, context);
+
+        metric.add(MetricDefinitions.NUM_SUCCESSFUL_RESPONSES, 1, context);
+    }
+
+    void failedResponse() {
+        setTimeToFirstByteFirstTime();
+
+        metric.set(MetricDefinitions.TOTAL_FAILED_LATENCY, getRequestLatency(), context);
+        metric.add(MetricDefinitions.NUM_FAILED_RESPONSES, 1, context);
+    }
+
+    void prematurelyClosed() {
+        metric.add(MetricDefinitions.NUM_PREMATURELY_CLOSED_CONNECTIONS, 1, context);
+    }
+
+    void successfulRead(int bytes_received) {
+        metric.set(MetricDefinitions.NUM_BYTES_RECEIVED, bytes_received, context);
+    }
+
+    private long getRequestLatency() {
+        return System.currentTimeMillis() - requestStartTime;
+    }
+
+    void uriLength(int length) {
+        metric.set(MetricDefinitions.URI_LENGTH, length, context);
+    }
+
+    void contentSize(int size) {
+        metric.set(MetricDefinitions.CONTENT_SIZE, size, context);
+    }
+}