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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package ai.vespa.metricsproxy.http.metrics;
import ai.vespa.metricsproxy.http.HttpHandlerTestBase;
import ai.vespa.metricsproxy.metric.model.json.GenericJsonModel;
import ai.vespa.metricsproxy.metric.model.json.GenericMetrics;
import ai.vespa.metricsproxy.metric.model.json.GenericService;
import ai.vespa.metricsproxy.service.DownService;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import org.junit.Ignore;
import org.junit.Test;
import java.io.IOException;
import java.util.Locale;
import static ai.vespa.metricsproxy.metric.dimensions.PublicDimensions.INTERNAL_SERVICE_ID;
import static ai.vespa.metricsproxy.metric.dimensions.PublicDimensions.REASON;
import static ai.vespa.metricsproxy.metric.dimensions.PublicDimensions.SERVICE_ID;
import static ai.vespa.metricsproxy.metric.model.StatusCode.DOWN;
import static ai.vespa.metricsproxy.metric.model.json.JacksonUtil.createObjectMapper;
import static ai.vespa.metricsproxy.service.DummyService.METRIC_1;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
/**
* @author gjoranv
*/
public abstract class MetricsHandlerTestBase<MODEL> extends HttpHandlerTestBase {
private static final ObjectMapper jsonMapper = new ObjectMapper();
static String rootUri;
static String valuesUri;
Class<MODEL> modelClass;
abstract GenericJsonModel getGenericJsonModel(MODEL model);
private MODEL getResponseAsJsonModel(String consumer) {
String response = testDriver.sendRequest(valuesUri + "?consumer=" + consumer).readAll();
try {
return createObjectMapper().readValue(response, modelClass);
} catch (IOException e) {
fail("Failed to create json model: " + e.getMessage());
throw new RuntimeException(e);
}
}
private GenericJsonModel getResponseAsGenericJsonModel(String consumer) {
return getGenericJsonModel(getResponseAsJsonModel(consumer));
}
@Test
public void invalid_path_yields_error_response() throws Exception {
String response = testDriver.sendRequest(rootUri + "/invalid").readAll();
JsonNode root = jsonMapper.readTree(response);
assertTrue(root.has("error"));
}
@Test
public void root_response_contains_values_uri() throws Exception {
String response = testDriver.sendRequest(rootUri).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(valuesUri, valuesUrl.get("url").textValue());
}
@Ignore
@Test
public void visually_inspect_values_response() throws Exception {
String response = testDriver.sendRequest(valuesUri).readAll();
ObjectMapper mapper = createObjectMapper();
var jsonModel = mapper.readValue(response, modelClass);
System.out.println(mapper.writerWithDefaultPrettyPrinter().writeValueAsString(jsonModel));
}
@Test
public void no_explicit_consumer_gives_the_default_consumer() {
String responseDefaultConsumer = testDriver.sendRequest(valuesUri + "?consumer=default").readAll();
String responseNoConsumer = testDriver.sendRequest(valuesUri).readAll();
assertEqualsExceptTimestamps(responseDefaultConsumer, responseNoConsumer);
}
@Test
public void unknown_consumer_gives_the_default_consumer() {
String response = testDriver.sendRequest(valuesUri).readAll();
String responseUnknownConsumer = testDriver.sendRequest(valuesUri + "?consumer=not_defined").readAll();
assertEqualsExceptTimestamps(response, responseUnknownConsumer);
}
private void assertEqualsExceptTimestamps(String s1, String s2) {
assertEquals(replaceTimestamps(s1), replaceTimestamps(s2));
}
private String replaceTimestamps(String s) {
return s.replaceAll("timestamp\":\\d+,", "timestamp\":1,");
}
@Test
public void response_contains_node_metrics() {
GenericJsonModel jsonModel = getResponseAsGenericJsonModel(DEFAULT_CONSUMER);
assertNotNull(jsonModel.node);
assertEquals(1, jsonModel.node.metrics.size());
assertEquals(12.345, jsonModel.node.metrics.get(0).values.get(CPU_METRIC), 0.0001d);
}
@Test
public void response_contains_service_metrics() {
GenericJsonModel jsonModel = getResponseAsGenericJsonModel(DEFAULT_CONSUMER);
assertEquals(2, jsonModel.services.size());
GenericService dummyService = jsonModel.services.get(0);
assertEquals(2, dummyService.metrics.size());
GenericMetrics dummy0Metrics = getMetricsForService("dummy0", dummyService);
assertEquals(1L, dummy0Metrics.values.get(METRIC_1).longValue());
assertEquals("default-val", dummy0Metrics.dimensions.get(REASON));
GenericMetrics dummy1Metrics = getMetricsForService("dummy1", dummyService);
assertEquals(6L, dummy1Metrics.values.get(METRIC_1).longValue());
assertEquals("default-val", dummy1Metrics.dimensions.get(REASON));
}
@Test
public void custom_consumer_gets_only_its_whitelisted_metrics() {
GenericJsonModel jsonModel = getResponseAsGenericJsonModel(CUSTOM_CONSUMER);
assertNotNull(jsonModel.node);
// TODO: see comment in ExternalMetrics.setExtraMetrics
// assertEquals(0, jsonModel.node.metrics.size());
assertEquals(2, jsonModel.services.size());
GenericService dummyService = jsonModel.services.get(0);
assertEquals(2, dummyService.metrics.size());
GenericMetrics dummy0Metrics = getMetricsForService("dummy0", dummyService);
assertEquals("custom-val", dummy0Metrics.dimensions.get(REASON));
GenericMetrics dummy1Metrics = getMetricsForService("dummy1", dummyService);
assertEquals("custom-val", dummy1Metrics.dimensions.get(REASON));
}
@Test
public void consumer_name_is_case_insensitive() {
GenericJsonModel jsonModel = getResponseAsGenericJsonModel(CUSTOM_CONSUMER.toUpperCase(Locale.ROOT));
GenericService dummyService = jsonModel.services.get(0);
GenericMetrics dummy0Metrics = getMetricsForService("dummy0", dummyService);
// If name was case-sensitive, this would be the default value.
assertEquals("custom-val", dummy0Metrics.dimensions.get(REASON));
}
private static GenericMetrics getMetricsForService(String serviceInstance, GenericService service) {
for (var metrics : service.metrics) {
if (getServiceIdDimension(metrics).equals(serviceInstance))
return metrics;
}
fail("Could not find metrics for service instance " + serviceInstance);
throw new RuntimeException();
}
@Test
public void all_timestamps_are_equal_and_non_zero() {
GenericJsonModel jsonModel = getResponseAsGenericJsonModel(DEFAULT_CONSUMER);
Long nodeTimestamp = jsonModel.node.timestamp;
assertNotEquals(0L, (long) nodeTimestamp);
for (var service : jsonModel.services)
assertEquals(nodeTimestamp, service.timestamp);
}
@Test
public void all_consumers_get_health_from_service_that_is_down() {
assertDownServiceHealth(DEFAULT_CONSUMER);
assertDownServiceHealth(CUSTOM_CONSUMER);
}
private void assertDownServiceHealth(String consumer) {
GenericJsonModel jsonModel = getResponseAsGenericJsonModel(consumer);
GenericService downService = jsonModel.services.get(1);
assertEquals(DOWN.status, downService.status.code);
assertEquals("No response", downService.status.description);
// Service should output metric dimensions, even without metrics, because they contain important info about the service.
assertEquals(1, downService.metrics.size());
assertEquals(0, downService.metrics.get(0).values.size());
assertFalse(downService.metrics.get(0).dimensions.isEmpty());
assertEquals(DownService.NAME, getServiceIdDimension(downService.metrics.get(0)));
}
private static String getServiceIdDimension(GenericMetrics metrics) {
var instanceDimension = metrics.dimensions.get(INTERNAL_SERVICE_ID);
return instanceDimension != null ? instanceDimension : metrics.dimensions.get(SERVICE_ID);
}
}
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