Add v1 cortisol code

build.gradle

@@ -273,6 +273,7 @@ dependencies {
     implementation 'io.grpc:grpc-protobuf:1.28.0'
     implementation 'io.grpc:grpc-stub:1.28.0'
     implementation 'javax.annotation:javax.annotation-api:1.3.2'
+    implementation 'org.elasticsearch.client:elasticsearch-rest-high-level-client:7.4.0'
 
     // JDK9+ has to run powermock 2+. https://github.com/powermock/powermock/issues/888
     testCompile group: 'org.powermock', name: 'powermock-api-mockito2', version: '2.0.0'

src/main/java/com/amazon/opendistro/elasticsearch/performanceanalyzer/tools/cortisol/BulkLoadParams.java

@@ -0,0 +1,52 @@
+package com.amazon.opendistro.elasticsearch.performanceanalyzer.tools.cortisol;
+
+/**
+ * Class containing the metadata for the bulk stress test.
+ */
+public class BulkLoadParams {
+    private int durationInSeconds;
+    private int docsPerSecond;
+    private int docsPerRequest = 1;
+    private String mappingTemplateJson = "";
+    private String trackLocation = "";
+
+    public int getDurationInSeconds() {
+        return durationInSeconds;
+    }
+
+    public void setDurationInSeconds(int durationInSeconds) {
+        this.durationInSeconds = durationInSeconds;
+    }
+
+    public int getDocsPerSecond() {
+        return docsPerSecond;
+    }
+
+    public void setDocsPerSecond(int docsPerSecond) {
+        this.docsPerSecond = docsPerSecond;
+    }
+
+    public int getDocsPerRequest() {
+        return docsPerRequest;
+    }
+
+    public void setDocsPerRequest(int docsPerRequest) {
+        this.docsPerRequest = docsPerRequest;
+    }
+
+    public String getMappingTemplateJson() {
+        return mappingTemplateJson;
+    }
+
+    public void setMappingTemplateJson(String mappingTemplateJson) {
+        this.mappingTemplateJson = mappingTemplateJson;
+    }
+
+    public String getTrackLocation() {
+        return trackLocation;
+    }
+
+    public void setTrackLocation(String trackLocation) {
+        this.trackLocation = trackLocation;
+    }
+}

src/main/java/com/amazon/opendistro/elasticsearch/performanceanalyzer/tools/cortisol/CortisolClient.java

@@ -0,0 +1,23 @@
+package com.amazon.opendistro.elasticsearch.performanceanalyzer.tools.cortisol;
+
+/**
+ * The client interface for Cortisol.
+ */
+public interface CortisolClient {
+    /**
+     * Runs an ingest workload as specified by the bulkLoadParams object.
+     * @param bulkLoadParams The object specifying the parameters for the stress test.
+     */
+    void stressBulk(final BulkLoadParams bulkLoadParams);
+
+    /**
+     * Runs a search workload as specified by the searchLoadParams object.
+     * @param searchLoadParams The object specifying the parameters for the stress test.
+     */
+    void stressSearch(final SearchLoadParams searchLoadParams);
+
+    /**
+     * Cleans up the cluster by deleting the indices created for stress testing.
+     */
+    void cleanup();
+}

src/main/java/com/amazon/opendistro/elasticsearch/performanceanalyzer/tools/cortisol/CortisolHelper.java

@@ -0,0 +1,16 @@
+package com.amazon.opendistro.elasticsearch.performanceanalyzer.tools.cortisol;
+
+import org.jooq.tools.json.JSONObject;
+
+public class CortisolHelper {
+    public static String buildIndexSettingsJson(final int nPrimaries, final int nReplicas) {
+        JSONObject container = new JSONObject();
+        JSONObject settings = new JSONObject();
+        JSONObject index = new JSONObject();
+        index.put("number_of_shards", nPrimaries);
+        index.put("number_of_replicas", nReplicas);
+        settings.put("index", index);
+        container.put("settings", settings);
+        return container.toString();
+    }
+}

src/main/java/com/amazon/opendistro/elasticsearch/performanceanalyzer/tools/cortisol/IngestTask.java

@@ -0,0 +1,177 @@
+package com.amazon.opendistro.elasticsearch.performanceanalyzer.tools.cortisol;
+
+import org.apache.http.HttpHost;
+import org.elasticsearch.action.ActionListener;
+import org.elasticsearch.action.bulk.BulkItemResponse;
+import org.elasticsearch.action.bulk.BulkRequest;
+import org.elasticsearch.action.bulk.BulkResponse;
+import org.elasticsearch.action.index.IndexRequest;
+import org.elasticsearch.client.*;
+import org.elasticsearch.client.indices.CreateIndexRequest;
+import org.elasticsearch.client.indices.CreateIndexResponse;
+import org.elasticsearch.common.xcontent.XContentType;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Random;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.locks.Condition;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+
+public class IngestTask implements Runnable {
+    private static final String CORTISOL_PREFIX = "cort-";
+    private final String endpoint;
+    private final int port;
+    private final BulkLoadParams params;
+    private final long endTime;
+    private final RestHighLevelClient client;
+    private final Random random;
+    private final String indexName;
+    private final TokenBucket tokenBucket;
+    private final AtomicInteger requestCount;
+    private final AtomicInteger successCount;
+    private final AtomicInteger failureCount;
+
+    public IngestTask(final BulkLoadParams bulkLoadParams, final String endpoint, final int port, final int nIngestThreads) {
+        this.params = bulkLoadParams;
+        this.endpoint = endpoint;
+        this.port = port;
+        long startTime = System.currentTimeMillis();
+        this.endTime = startTime + bulkLoadParams.getDurationInSeconds() * 1000;
+        this.client = buildEsClient();
+        this.random = new Random();
+        this.requestCount = new AtomicInteger();
+        this.successCount = new AtomicInteger();
+        this.failureCount = new AtomicInteger();
+        this.indexName = CORTISOL_PREFIX + random.nextInt(100);
+        this.tokenBucket = new TokenBucket(params.getDocsPerSecond() / (params.getDocsPerRequest() * nIngestThreads));
+    }
+
+    @Override
+    public void run() {
+        try {
+            BufferedReader br = new BufferedReader(new FileReader(params.getTrackLocation()));
+            createIndex(params.getMappingTemplateJson(), 3, 1);
+
+            while (System.currentTimeMillis() < endTime) {
+                // take blocks till tokens are available in the token bucket.
+                // 0 indicates an interrupted exception, so break out and exit.
+                if (tokenBucket.take() != 0) {
+                    List<String> docs = new ArrayList<>();
+                    for (int i = 0; i < params.getDocsPerRequest(); ++i) {
+                        String doc = br.readLine();
+                        if (doc == null) {
+                            // restart the indexing from the top.
+                            br = new BufferedReader(new FileReader(params.getTrackLocation()));
+                            doc = br.readLine();
+                        }
+
+                        docs.add(doc);
+                    }
+                    makeBulkRequest(docs);
+                } else {
+                    break;
+                }
+            }
+
+            br.close();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private RestHighLevelClient buildEsClient() {
+        final RestClientBuilder builder = RestClient.builder(new HttpHost(endpoint, port, "http"));
+        return new RestHighLevelClient(builder);
+    }
+
+    private void createIndex(final String mappingTemplateJson, int nPrimaryShards, int nReplicaShards) throws IOException {
+        final CreateIndexRequest cir = new CreateIndexRequest(indexName);
+        cir.mapping(mappingTemplateJson, XContentType.JSON);
+        cir.settings(CortisolHelper.buildIndexSettingsJson(nPrimaryShards, nReplicaShards), XContentType.JSON);
+        final CreateIndexResponse response = client.indices().create(cir, RequestOptions.DEFAULT);
+        assert response.isAcknowledged();
+    }
+
+    private void makeBulkRequest(final List<String> bulkDocs) {
+        final BulkRequest bulkRequest = new BulkRequest();
+        for (String bulkDoc : bulkDocs) {
+            final IndexRequest indexRequest = Requests.indexRequest(indexName);
+            indexRequest.source(bulkDoc, XContentType.JSON);
+            bulkRequest.add(indexRequest);
+        }
+        client.bulkAsync(bulkRequest, RequestOptions.DEFAULT, new ActionListener<BulkResponse>() {
+            @Override
+            public void onResponse(BulkResponse bulkItemResponses) {
+                if (!bulkItemResponses.hasFailures()) {
+                    successCount.addAndGet(bulkDocs.size());
+                } else {
+                    for (BulkItemResponse response : bulkItemResponses) {
+                        if (response.isFailed()) {
+                            failureCount.incrementAndGet();
+                        } else {
+                            successCount.incrementAndGet();
+                        }
+                    }
+                }
+            }
+
+            @Override
+            public void onFailure(Exception e) {
+                failureCount.addAndGet(bulkDocs.size());
+            }
+        });
+        requestCount.addAndGet(bulkDocs.size());
+    }
+
+    /**
+     * Custom token bucket class that lets at most {@code nTokens} be available every second.
+     */
+    private class TokenBucket {
+        private final Lock lock = new ReentrantLock();
+        private final Condition hasTokens = lock.newCondition();
+        private final ScheduledExecutorService ses = Executors.newSingleThreadScheduledExecutor();
+
+        private final int maxTokens;
+        private int nTokens;
+
+        public TokenBucket(final int maxTokens) {
+            this.maxTokens = maxTokens;
+            this.ses.schedule(this::refill, 1, TimeUnit.SECONDS);
+        }
+
+        public int take() {
+            lock.lock();
+            try {
+                while (nTokens == 0) {
+                    hasTokens.await();
+                }
+                return nTokens--;
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            } finally {
+                lock.unlock();
+            }
+
+            return 0;
+        }
+
+        private void refill() {
+            lock.lock();
+            try {
+                nTokens = maxTokens;
+                hasTokens.signal();
+            } finally {
+                lock.unlock();
+            }
+        }
+    }
+}

src/main/java/com/amazon/opendistro/elasticsearch/performanceanalyzer/tools/cortisol/SearchLoadParams.java

@@ -0,0 +1,7 @@
+package com.amazon.opendistro.elasticsearch.performanceanalyzer.tools.cortisol;
+
+/**
+ * [TBD] Class containing the metadata for search stress test.
+ */
+public class SearchLoadParams {
+}

src/main/java/com/amazon/opendistro/elasticsearch/performanceanalyzer/tools/cortisol/SimpleCortisolClient.java

@@ -0,0 +1,57 @@
+package com.amazon.opendistro.elasticsearch.performanceanalyzer.tools.cortisol;
+
+import org.elasticsearch.client.RestHighLevelClient;
+
+import java.util.concurrent.*;
+import java.util.stream.IntStream;
+
+/**
+ * A basic implementation of {@link CortisolClient}.
+ */
+public class SimpleCortisolClient implements CortisolClient {
+    private final String endpoint;
+    private final int port;
+    private final int nThreads;
+    private final ExecutorService executorService;
+
+    public SimpleCortisolClient(final String endpoint, final int port) {
+        this.endpoint = endpoint;
+        this.port = port;
+        nThreads = Runtime.getRuntime().availableProcessors();
+        executorService = Executors.newFixedThreadPool(nThreads);
+    }
+
+    /**
+     * Tries to run an ingest load as specified by the docsPerSecond configured in the {@link BulkLoadParams} instance.
+     * The way it runs the ingest load is by creating multiple threads where each thread will create its own index on
+     * the cluster and ingests into it.
+     * @param bulkLoadParams The object specifying the parameters for the stress test.
+     */
+    @Override
+    public void stressBulk(BulkLoadParams bulkLoadParams) {
+        setupShutDownHook(bulkLoadParams.getDurationInSeconds());
+        IntStream.of(nThreads).forEach(i -> executorService.submit(new IngestTask(bulkLoadParams, endpoint, port, nThreads)));
+    }
+
+    @Override
+    public void stressSearch(SearchLoadParams searchLoadParams) {
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    @Override
+    public void cleanup() {
+        try {
+            executorService.shutdown();
+            executorService.awaitTermination(30, TimeUnit.SECONDS);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+            executorService.shutdownNow();
+        }
+    }
+
+    private void setupShutDownHook(final int duration) {
+        ScheduledExecutorService scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
+        scheduledExecutorService.schedule(this::cleanup, duration, TimeUnit.SECONDS);
+        System.out.println("Shutdown hook enabled. Will shutdown after");
+    }
+}