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 * ownership. Elasticsearch licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
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package org.elasticsearch.action.admin.cluster.stats;

import org.elasticsearch.action.admin.cluster.node.info.NodeInfo;
import org.elasticsearch.action.admin.cluster.node.stats.NodeStats;
import org.elasticsearch.action.admin.cluster.node.stats.NodeStatsTests;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.network.NetworkModule;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.test.ESTestCase;

import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;

import static java.util.Collections.emptyList;
import static java.util.Collections.singletonList;
import static org.elasticsearch.common.xcontent.XContentHelper.toXContent;
import static org.hamcrest.Matchers.equalTo;

public class ClusterStatsNodesTests extends ESTestCase {

    /**
     * Test that empty transport/http types are not printed out as part
     * of the cluster stats xcontent output.
     */
    public void testNetworkTypesToXContent() throws Exception {
        ClusterStatsNodes.NetworkTypes stats = new ClusterStatsNodes.NetworkTypes(emptyList());
        assertEquals("{\"transport_types\":{},\"http_types\":{}}",
                toXContent(stats, XContentType.JSON, randomBoolean()).utf8ToString());

        List<NodeInfo> nodeInfos = singletonList(createNodeInfo("node_0", null, null));
        stats = new ClusterStatsNodes.NetworkTypes(nodeInfos);
        assertEquals("{\"transport_types\":{},\"http_types\":{}}",
                toXContent(stats, XContentType.JSON, randomBoolean()).utf8ToString());

        nodeInfos = Arrays.asList(createNodeInfo("node_1", "", ""),
                                  createNodeInfo("node_2", "custom", "custom"),
                                  createNodeInfo("node_3", null, "custom"));
        stats = new ClusterStatsNodes.NetworkTypes(nodeInfos);
        assertEquals("{"
                + "\"transport_types\":{\"custom\":1},"
                + "\"http_types\":{\"custom\":2}"
        + "}", toXContent(stats, XContentType.JSON, randomBoolean()).utf8ToString());
    }

    public void testIngestStats() throws Exception {
        NodeStats nodeStats = randomValueOtherThanMany(n -> n.getIngestStats() == null, NodeStatsTests::createNodeStats);
        SortedMap<String, long[]> processorStats = new TreeMap<>();
        nodeStats.getIngestStats().getProcessorStats().values().forEach(l -> l.forEach(s -> processorStats.put(s.getType(),
            new long[] { s.getStats().getIngestCount(), s.getStats().getIngestFailedCount(),
                s.getStats().getIngestCurrent(), s.getStats().getIngestTimeInMillis()})));
        ClusterStatsNodes.IngestStats stats = new ClusterStatsNodes.IngestStats(Collections.singletonList(nodeStats));
        assertThat(stats.pipelineCount, equalTo(nodeStats.getIngestStats().getProcessorStats().size()));
        String processorStatsString = "{";
        Iterator<Map.Entry<String, long[]>> iter = processorStats.entrySet().iterator();
        while (iter.hasNext()) {
            Map.Entry<String, long[]> entry = iter.next();
            long[] statValues = entry.getValue();
            long count = statValues[0];
            long failedCount = statValues[1];
            long current = statValues[2];
            long timeInMillis = statValues[3];
            processorStatsString += "\"" + entry.getKey() + "\":{\"count\":" + count
                + ",\"failed\":" + failedCount
                + ",\"current\":" + current
                + ",\"time_in_millis\":" + timeInMillis
                + "}";
            if (iter.hasNext()) {
                processorStatsString += ",";
            }
        }
        processorStatsString += "}";
        assertThat(toXContent(stats, XContentType.JSON, false).utf8ToString(), equalTo(
            "{\"ingest\":{"
                + "\"number_of_pipelines\":" + stats.pipelineCount + ","
                + "\"processor_stats\":" + processorStatsString
                + "}}"));
    }

    private static NodeInfo createNodeInfo(String nodeId, String transportType, String httpType) {
        Settings.Builder settings = Settings.builder();
        if (transportType != null) {
            settings.put(randomFrom(NetworkModule.TRANSPORT_TYPE_KEY,
                    NetworkModule.TRANSPORT_TYPE_DEFAULT_KEY), transportType);
        }
        if (httpType != null) {
            settings.put(randomFrom(NetworkModule.HTTP_TYPE_KEY,
                    NetworkModule.HTTP_TYPE_DEFAULT_KEY), httpType);
        }
        return new NodeInfo(null, null,
                new DiscoveryNode(nodeId, buildNewFakeTransportAddress(), null),
                settings.build(), null, null, null, null, null, null, null, null, null);
    }
}

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Fix ingest stats test bug. (#50653)