From 0c301c98d930a5e0a48b62bf8a5eda6abfc58257 Mon Sep 17 00:00:00 2001
From: gjoranv <gv@verizonmedia.com>
Date: Fri, 3 Jan 2020 00:13:21 +0100
Subject: Properly support multiple consumers when caching metrics.

---
 .../http/application/NodeMetricsClientTest.java    | 32 ++++++++++++++++++++++
 1 file changed, 32 insertions(+)

(limited to 'metrics-proxy/src/test/java/ai')

diff --git a/metrics-proxy/src/test/java/ai/vespa/metricsproxy/http/application/NodeMetricsClientTest.java b/metrics-proxy/src/test/java/ai/vespa/metricsproxy/http/application/NodeMetricsClientTest.java
index d028db93d43..6c319a4d74c 100644
--- a/metrics-proxy/src/test/java/ai/vespa/metricsproxy/http/application/NodeMetricsClientTest.java
+++ b/metrics-proxy/src/test/java/ai/vespa/metricsproxy/http/application/NodeMetricsClientTest.java
@@ -20,11 +20,15 @@ import java.util.List;
 
 import static ai.vespa.metricsproxy.TestUtil.getFileContents;
 import static ai.vespa.metricsproxy.http.ValuesFetcher.DEFAULT_PUBLIC_CONSUMER_ID;
+import static ai.vespa.metricsproxy.metric.model.ConsumerId.toConsumerId;
+import static ai.vespa.metricsproxy.metric.model.MetricId.toMetricId;
 import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
+import static com.github.tomakehurst.wiremock.client.WireMock.equalTo;
 import static com.github.tomakehurst.wiremock.client.WireMock.get;
 import static com.github.tomakehurst.wiremock.client.WireMock.urlPathEqualTo;
 import static com.github.tomakehurst.wiremock.core.WireMockConfiguration.options;
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 /**
  * Two optimizations worth noting:
@@ -40,6 +44,10 @@ public class NodeMetricsClientTest {
     private static final String RESPONSE = getFileContents(TEST_FILE);
     private static final CloseableHttpClient httpClient = HttpClients.createDefault();
 
+    private static final String CPU_METRIC = "cpu.util";
+    private static final String REPLACED_CPU_METRIC = "replaced_cpu_util";
+    private static final String CUSTOM_CONSUMER = "custom-consumer";
+
     private static Node node;
 
     private ManualClock clock;
@@ -54,6 +62,17 @@ public class NodeMetricsClientTest {
         URI metricsUri = node.metricsUri(DEFAULT_PUBLIC_CONSUMER_ID);
         wireMockRule.stubFor(get(urlPathEqualTo(metricsUri.getPath()))
                                      .willReturn(aResponse().withBody(RESPONSE)));
+
+        wireMockRule.stubFor(get(urlPathEqualTo(metricsUri.getPath()))
+                                     .withQueryParam("consumer", equalTo(DEFAULT_PUBLIC_CONSUMER_ID.id))
+                                     .willReturn(aResponse().withBody(RESPONSE)));
+
+        // Add a slightly different response for a custom consumer.
+        String myConsumerResponse = RESPONSE.replaceAll(CPU_METRIC, REPLACED_CPU_METRIC);
+        wireMockRule.stubFor(get(urlPathEqualTo(metricsUri.getPath()))
+                                     .withQueryParam("consumer", equalTo(CUSTOM_CONSUMER))
+                                     .willReturn(aResponse().withBody(myConsumerResponse)));
+
     }
 
     @Before
@@ -94,4 +113,17 @@ public class NodeMetricsClientTest {
         assertEquals(2, nodeMetricsClient.snapshotsRetrieved());
     }
 
+    @Test
+    public void metrics_for_different_consumers_are_cached_separately() {
+        List<MetricsPacket.Builder> defaultMetrics = nodeMetricsClient.getMetrics(DEFAULT_PUBLIC_CONSUMER_ID);
+        assertEquals(1, nodeMetricsClient.snapshotsRetrieved());
+        assertEquals(4, defaultMetrics.size());
+
+        List<MetricsPacket.Builder> customMetrics = nodeMetricsClient.getMetrics(toConsumerId(CUSTOM_CONSUMER));
+        assertEquals(2, nodeMetricsClient.snapshotsRetrieved());
+        assertEquals(4, customMetrics.size());
+
+        MetricsPacket replacedCpuMetric = customMetrics.get(0).build();
+        assertTrue(replacedCpuMetric.metrics().containsKey(toMetricId(REPLACED_CPU_METRIC)));
+    }
 }
-- 
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