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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package ai.vespa.metricsproxy.http.prometheus;
import ai.vespa.metricsproxy.http.HttpHandlerTestBase;
import ai.vespa.metricsproxy.service.DummyService;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.yahoo.container.jdisc.RequestHandlerTestDriver;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;
import java.util.concurrent.Executors;
import static ai.vespa.metricsproxy.metric.dimensions.PublicDimensions.REASON;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author gjoranv
*/
@SuppressWarnings("UnstableApiUsage")
public class PrometheusHandlerTest extends HttpHandlerTestBase {
private static final ObjectMapper jsonMapper = new ObjectMapper();
private static final String V1_URI = URI_BASE + PrometheusHandler.V1_PATH;
private static final String VALUES_URI = URI_BASE + PrometheusHandler.VALUES_PATH;
private static String valuesResponse;
@BeforeClass
public static void setup() {
PrometheusHandler handler = new PrometheusHandler(Executors.newSingleThreadExecutor(),
getMetricsManager(),
vespaServices,
getMetricsConsumers());
testDriver = new RequestHandlerTestDriver(handler);
valuesResponse = testDriver.sendRequest(VALUES_URI).readAll();
}
@Test
public void v1_response_contains_values_uri() throws Exception {
String response = testDriver.sendRequest(V1_URI).readAll();
JsonNode root = jsonMapper.readTree(response);
assertTrue(root.has("resources"));
ArrayNode resources = (ArrayNode) root.get("resources");
assertEquals(1, resources.size());
JsonNode valuesUrl = resources.get(0);
assertEquals(VALUES_URI, valuesUrl.get("url").textValue());
}
@Ignore
@Test
public void visually_inspect_values_response() {
System.out.println(valuesResponse);
}
@Test
public void response_contains_node_status() {
assertTrue(valuesResponse.contains("vespa_node_status 1.0"));
}
@Test
public void response_contains_node_metrics() {
String cpu = getLine(valuesResponse, CPU_METRIC + "{");
assertTrue(cpu.contains("} 12.345")); // metric value
}
@Test
public void response_contains_service_status() {
assertTrue(valuesResponse.contains("vespa_dummy_status 1.0"));
assertTrue(valuesResponse.contains("vespa_down_service_status 0.0"));
}
@Test
public void response_contains_service_metrics() {
String dummy0 = getLine(valuesResponse, DummyService.NAME + "0");
assertTrue(dummy0.contains("c_test")); // metric name
assertTrue(dummy0.contains("} 1.0")); // metric value
}
@Test
public void service_metrics_have_configured_dimensions() {
String dummy0 = getLine(valuesResponse, DummyService.NAME + "0");
assertTrue(dummy0.contains(REASON + "=\"default-val\""));
}
@Test
public void service_metrics_have_vespa_service_dimension() {
String dummy0 = getLine(valuesResponse, DummyService.NAME + "0");
assertTrue(dummy0.contains("vespa_service=\"vespa_dummy\""));
}
// Find the first line that contains the given string
private String getLine(String raw, String searchString) {
for (var s : raw.split("\\n")) {
if (s.contains(searchString))
return s;
}
throw new IllegalArgumentException("No line containing string: " + searchString);
}
}
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