Add metrics to PublishDnsUpdatesAction

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=131190862

java/google/registry/dns/DnsMetrics.java

@@ -0,0 +1,68 @@
+// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
+//
+// 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 google.registry.dns;
+
+import com.google.common.collect.ImmutableSet;
+import google.registry.monitoring.metrics.IncrementableMetric;
+import google.registry.monitoring.metrics.LabelDescriptor;
+import google.registry.monitoring.metrics.MetricRegistryImpl;
+
+/**
+ * DNS instrumentation.
+ */
+public class DnsMetrics {
+
+  private static final ImmutableSet<LabelDescriptor> LABEL_DESCRIPTORS =
+      ImmutableSet.of(
+          LabelDescriptor.create("tld", "TLD"),
+          LabelDescriptor.create(
+              "status", "Whether the publish request was accepted or rejected."));
+  private static final IncrementableMetric publishDomainRequests =
+      MetricRegistryImpl.getDefault()
+          .newIncrementableMetric(
+              "/dns/publish_domain_requests",
+              "count of publishDomain requests",
+              "count",
+              LABEL_DESCRIPTORS);
+  private static final IncrementableMetric publishHostRequests =
+      MetricRegistryImpl.getDefault()
+          .newIncrementableMetric(
+              "/dns/publish_host_requests",
+              "count of publishHost requests",
+              "count",
+              LABEL_DESCRIPTORS);
+
+  /**
+   * Increment a monotonic counter that tracks calls to {@link
+   * google.registry.dns.writer.DnsWriter#publishDomain(String)}, per TLD.
+   */
+  public void incrementPublishDomainRequests(String tld, Status status) {
+    publishDomainRequests.increment(tld, status.name());
+  }
+
+  /**
+   * Increment a monotonic counter that tracks calls to {@link
+   * google.registry.dns.writer.DnsWriter#publishHost(String)}, per TLD.
+   */
+  public void incrementPublishHostRequests(String tld, Status status) {
+    publishHostRequests.increment(tld, status.name());
+  }
+
+  /** Enum to encode the disposition of a publish request. */
+  public enum Status {
+    ACCEPTED,
+    REJECTED
+  }
+}