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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.metric.model.json;
import ai.vespa.metricsproxy.metric.model.MetricsPacket;
import ai.vespa.metricsproxy.metric.model.StatusCode;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.Test;
import java.io.IOException;
import java.util.List;
import static ai.vespa.metricsproxy.TestUtil.getFileContents;
import static ai.vespa.metricsproxy.metric.ExternalMetrics.VESPA_NODE_SERVICE_ID;
import static ai.vespa.metricsproxy.metric.model.DimensionId.toDimensionId;
import static ai.vespa.metricsproxy.metric.model.MetricId.toMetricId;
import static ai.vespa.metricsproxy.metric.model.ServiceId.toServiceId;
import static ai.vespa.metricsproxy.metric.model.json.JacksonUtil.createObjectMapper;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
/**
* @author gjoranv
*/
public class GenericJsonModelTest {
private static final String TEST_FILE = "generic-sample.json";
private static final String TEST_FILE_WITHOUT_NODE = "generic-without-node.json";
@Test
public void deserialize_serialize_roundtrip() throws IOException {
GenericJsonModel jsonModel = genericJsonModelFromTestFile(TEST_FILE);
// Do some sanity checking
assertEquals(2, jsonModel.services.size());
assertEquals(2, jsonModel.node.metrics.size());
assertEquals(16.222, jsonModel.node.metrics.get(0).values.get("cpu.util"), 0.01d);
assertThatSerializedModelEqualsTestFile(jsonModel, TEST_FILE);
}
@Test
public void deserialize_serialize_roundtrip_without_node_json() throws IOException {
GenericJsonModel jsonModel = genericJsonModelFromTestFile(TEST_FILE_WITHOUT_NODE);
assertEquals(2, jsonModel.services.size());
assertThatSerializedModelEqualsTestFile(jsonModel, TEST_FILE_WITHOUT_NODE);
}
@Test
public void deserialize_serialize_roundtrip_with_metrics_packets() throws IOException {
GenericJsonModel modelFromFile = genericJsonModelFromTestFile(TEST_FILE);
List<MetricsPacket> metricsPackets = GenericJsonUtil.toMetricsPackets(modelFromFile).stream()
.map(MetricsPacket.Builder::build)
.toList();
assertEquals(4, metricsPackets.size());
GenericJsonModel modelFromPackets = GenericJsonUtil.toGenericJsonModel(metricsPackets);
// Do some sanity checking
assertEquals(2, modelFromFile.services.size());
assertEquals(2, modelFromFile.node.metrics.size());
assertEquals(16.222, modelFromFile.node.metrics.get(0).values.get("cpu.util"), 0.01d);
assertThatSerializedModelEqualsTestFile(modelFromPackets, TEST_FILE);
}
@Test
public void deserialize_serialize_roundtrip_without_node_json_with_metrics_packets() throws IOException {
GenericJsonModel modelFromFile = genericJsonModelFromTestFile(TEST_FILE_WITHOUT_NODE);
List<MetricsPacket> metricsPackets = GenericJsonUtil.toMetricsPackets(modelFromFile).stream()
.map(MetricsPacket.Builder::build)
.toList();
assertEquals(2, metricsPackets.size());
GenericJsonModel modelFromPackets = GenericJsonUtil.toGenericJsonModel(metricsPackets);
assertThatSerializedModelEqualsTestFile(modelFromPackets, TEST_FILE_WITHOUT_NODE);
}
@Test
public void metrics_packets_can_be_converted_to_generic_json_model() throws Exception {
var nodePacket = new MetricsPacket.Builder(VESPA_NODE_SERVICE_ID)
.timestamp(123456L)
.putMetric(toMetricId("node-metric"), 1.234)
.putDimension(toDimensionId("node-dim"), "node-dim-value")
.build();
var servicePacket = new MetricsPacket.Builder(toServiceId("my-service"))
.timestamp(123456L)
.statusCode(0)
.putMetric(toMetricId("service-metric"), 1234)
.putDimension(toDimensionId("service-dim"), "service-dim-value")
.build();
var metricsPackets = List.of(servicePacket, nodePacket);
GenericJsonModel jsonModel = GenericJsonUtil.toGenericJsonModel(metricsPackets);
assertNotNull(jsonModel.node);
assertEquals(1, jsonModel.node.metrics.size());
GenericMetrics nodeMetrics = jsonModel.node.metrics.get(0);
assertEquals(1.234, nodeMetrics.values.get("node-metric"), 0.001d);
assertEquals("node-dim-value", nodeMetrics.dimensions.get("node-dim"));
assertEquals(1, jsonModel.services.size());
GenericService service = jsonModel.services.get(0);
assertEquals(StatusCode.UP.status, service.status.code);
assertEquals("", service.status.description);
assertEquals(1, service.metrics.size());
GenericMetrics serviceMetrics = service.metrics.get(0);
assertEquals(1234L, serviceMetrics.values.get("service-metric").longValue());
assertEquals("service-dim-value", serviceMetrics.dimensions.get("service-dim"));
// Visual inspection
System.out.println(createObjectMapper().writerWithDefaultPrettyPrinter().writeValueAsString(jsonModel));
}
@Test
public void generic_json_string_can_be_converted_to_metrics_packets() {
String genericJson = getFileContents(TEST_FILE);
List<MetricsPacket> metricsPackets = GenericJsonUtil.toMetricsPackets(genericJson).stream()
.map(MetricsPacket.Builder::build)
.toList();
assertEquals(4, metricsPackets.size());
GenericJsonModel modelFromPackets = GenericJsonUtil.toGenericJsonModel(metricsPackets);
assertThatSerializedModelEqualsTestFile(modelFromPackets, TEST_FILE);
}
private void assertThatSerializedModelEqualsTestFile(GenericJsonModel modelFromPackets, String testFile) {
String serialized = modelFromPackets.serialize();
String trimmed = serialized.trim().replaceAll("\\s+", "");
String expected = getFileContents(testFile).trim().replaceAll("\\s+", "");
assertEquals(expected, trimmed);
}
private GenericJsonModel genericJsonModelFromTestFile(String filename) throws IOException {
ObjectMapper mapper = createObjectMapper();
return mapper.readValue(getFileContents(filename), GenericJsonModel.class);
}
@Test
public void within_long_range_as_long_if_possible() {
assertEquals("7", JacksonUtil.format(7D));
assertEquals("7.1", JacksonUtil.format(7.1));
assertEquals("-7", JacksonUtil.format(-7D));
assertEquals("-7.1", JacksonUtil.format(-7.1));
}
@Test
public void outside_long_range_as_decimal_if_possible() {
double within = Long.MAX_VALUE;
double outside = 3 * within;
assertEquals("9223372036854776000", JacksonUtil.format(within));
assertEquals("-9223372036854776000", JacksonUtil.format(-within));
assertEquals("27670116110564327000.0", JacksonUtil.format(outside));
assertEquals("-27670116110564327000.0", JacksonUtil.format(-outside));
}
}
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