tests

kafka-ui-api/src/main/java/com/provectus/kafka/ui/model/InternalLogDirStats.java

@@ -10,6 +10,7 @@ import java.util.List;
 import java.util.LongSummaryStatistics;
 import java.util.Map;
 import java.util.concurrent.atomic.LongAdder;
+import lombok.RequiredArgsConstructor;
 import lombok.Value;
 import org.apache.kafka.clients.admin.LogDirDescription;
 import org.apache.kafka.common.TopicPartition;
@@ -21,13 +22,13 @@ import reactor.util.function.Tuples;
 public class InternalLogDirStats {
 
   @Value
+  @RequiredArgsConstructor
   public static class SegmentStats {
     Long segmentSize;
     Integer segmentsCount;
 
     private SegmentStats(LongSummaryStatistics s) {
-      segmentSize = s.getSum();
-      segmentsCount = (int) s.getCount();
+      this(s.getSum(), (int) s.getCount());
     }
   }
 

kafka-ui-api/src/main/java/com/provectus/kafka/ui/service/metrics/scrape/ScrapedClusterState.java

@@ -16,6 +16,7 @@ import java.util.Map;
 import java.util.Optional;
 import java.util.stream.Collectors;
 import lombok.Builder;
+import lombok.RequiredArgsConstructor;
 import lombok.Value;
 import org.apache.kafka.clients.admin.ConfigEntry;
 import org.apache.kafka.clients.admin.ConsumerGroupDescription;
@@ -27,6 +28,7 @@ import org.apache.kafka.common.TopicPartition;
 import reactor.core.publisher.Mono;
 
 @Builder(toBuilder = true)
+@RequiredArgsConstructor
 @Value
 public class ScrapedClusterState {
 

kafka-ui-api/src/test/java/com/provectus/kafka/ui/service/metrics/scrape/inferred/InferredMetricsScraperTest.java

@@ -0,0 +1,119 @@
+package com.provectus.kafka.ui.service.metrics.scrape.inferred;
+
+import static com.provectus.kafka.ui.service.metrics.scrape.ScrapedClusterState.ConsumerGroupState;
+import static com.provectus.kafka.ui.service.metrics.scrape.ScrapedClusterState.NodeState;
+import static com.provectus.kafka.ui.service.metrics.scrape.ScrapedClusterState.TopicState;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import com.provectus.kafka.ui.model.InternalLogDirStats;
+import com.provectus.kafka.ui.service.metrics.scrape.ScrapedClusterState;
+import java.time.Instant;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import org.apache.kafka.clients.admin.ConsumerGroupDescription;
+import org.apache.kafka.clients.admin.MemberAssignment;
+import org.apache.kafka.clients.admin.MemberDescription;
+import org.apache.kafka.clients.admin.TopicDescription;
+import org.apache.kafka.common.Node;
+import org.apache.kafka.common.TopicPartition;
+import org.apache.kafka.common.TopicPartitionInfo;
+import org.junit.jupiter.api.Test;
+import reactor.core.publisher.Mono;
+import reactor.test.StepVerifier;
+
+class InferredMetricsScraperTest {
+
+  final InferredMetricsScraper scraper = new InferredMetricsScraper();
+
+  @Test
+  void allExpectedMetricsScraped() {
+    var segmentStats = new InternalLogDirStats.SegmentStats(1234L, 3);
+    var logDirStats = new InternalLogDirStats.LogDirSpaceStats(234L, 345L, Map.of(), Map.of());
+
+    Node node1 = new Node(1, "node1", 9092);
+    Node node2 = new Node(2, "node2", 9092);
+
+    Mono<InferredMetrics> scraped = scraper.scrape(
+        ScrapedClusterState.builder()
+            .scrapeFinishedAt(Instant.now())
+            .nodesStates(
+                Map.of(
+                    1, new NodeState(1, node1, segmentStats, logDirStats),
+                    2, new NodeState(2, node2, segmentStats, logDirStats)
+                )
+            )
+            .topicStates(
+                Map.of(
+                    "t1",
+                    new TopicState(
+                        "t1",
+                        new TopicDescription(
+                            "t1",
+                            false,
+                            List.of(
+                                new TopicPartitionInfo(0, node1, List.of(node1, node2), List.of(node1, node2)),
+                                new TopicPartitionInfo(1, node1, List.of(node1, node2), List.of(node1))
+                            )
+                        ),
+                        List.of(),
+                        Map.of(0, 100L, 1, 101L),
+                        Map.of(0, 200L, 1, 201L),
+                        segmentStats,
+                        Map.of(0, segmentStats, 1, segmentStats)
+                    )
+                )
+            )
+            .consumerGroupsStates(
+                Map.of(
+                    "cg1",
+                    new ConsumerGroupState(
+                        "cg1",
+                        new ConsumerGroupDescription(
+                            "cg1",
+                            true,
+                            List.of(
+                                new MemberDescription(
+                                    "memb1", Optional.empty(), "client1", "hst1",
+                                    new MemberAssignment(Set.of(new TopicPartition("t1", 0)))
+                                )
+                            ),
+                            null,
+                            org.apache.kafka.common.ConsumerGroupState.STABLE,
+                            node1
+                        ),
+                        Map.of(new TopicPartition("t1", 0), 150L)
+                    )
+                )
+            )
+            .build()
+    );
+
+    StepVerifier.create(scraped)
+        .assertNext(inferredMetrics ->
+            assertThat(inferredMetrics.asStream().map(m -> m.name)).containsExactlyInAnyOrder(
+                "broker_count",
+                "broker_bytes_disk",
+                "broker_bytes_usable",
+                "broker_bytes_total",
+                "topic_count",
+                "kafka_topic_partitions",
+                "kafka_topic_partition_current_offset",
+                "kafka_topic_partition_oldest_offset",
+                "kafka_topic_partition_in_sync_replica",
+                "kafka_topic_partition_replicas",
+                "kafka_topic_partition_leader",
+                "topic_bytes_disk",
+                "group_count",
+                "group_state",
+                "group_member_count",
+                "group_host_count",
+                "kafka_consumergroup_current_offset",
+                "kafka_consumergroup_lag"
+            )
+        )
+        .verifyComplete();
+  }
+
+}