datadog.patch

diff --git a/jobs/atc/spec b/jobs/atc/spec
index 353b8efa..c4dcbcba 100644
--- a/jobs/atc/spec
+++ b/jobs/atc/spec
@@ -467,6 +467,22 @@ properties:
       Environment name to specify for errors emitted to Yeller.
     default: ""
 
+  datadog.agent_host:
+    description: |
+      If configured, detailed metrics will be emitted to the specified Datadog Agent's
+      dogstatsd server.
+    default: ""
+
+  datadog.agent_port:
+    description: |
+      Port of the Datadog Agent's dogstatsd server to emit events to.
+    default: 8125
+
+  datadog.prefix:
+    description: |
+      An optional prefix for emitted Datadog events.
+    default: ""
+
   riemann.host:
     description: |
       If configured, detailed metrics will be emitted to the specified Riemann
diff --git a/jobs/atc/templates/atc_ctl.erb b/jobs/atc/templates/atc_ctl.erb
index e40eaf39..c3e41bed 100644
--- a/jobs/atc/templates/atc_ctl.erb
+++ b/jobs/atc/templates/atc_ctl.erb
@@ -239,6 +239,13 @@ case $1 in
       <% if p("influxdb.insecure_skip_verify") %> \
       --influxdb-insecure-skip-verify \
       <% end %> \
+      <% if_p("datadog.agent_host", "datadog.agent_port") do |host, port| %> \
+      --datadog-agent-host <%= esc(host) %> \
+      --datadog-agent-port <%= port.to_i %> \
+      <% end %> \
+      <% if_p("datadog.prefix") do |prefix| %> \
+      --datadog-prefix <%= esc(prefix) %> \
+      <% end %> \
       <% if_p("riemann.host", "riemann.port") do |host, port| %> \
       --riemann-host <%= esc(host) %> \
       --riemann-port <%= port.to_i %> \