Add integration test framework

DEVELOPER_GUIDE.md

@@ -13,6 +13,7 @@
     - [Publish OpenSearch SDK for Java to Maven Local](#publish-opensearch-sdk-for-java-to-maven-local)
     - [Perform a REST Request on the Extension](#perform-a-rest-request-on-the-extension)
     - [Run Tests](#run-tests)
+    - [Launching and debugging from an IDE](#launching-and-debugging-from-an-ide)
     - [Submitting Changes](#submitting-changes)
 
 ## Introduction
@@ -221,6 +222,16 @@ Run tests :
 ```
 ./gradlew clean build test
 ```
+
+Run integration tests :
+```
+./gradlew clean build integTest
+```
+
+## Launching and debugging from an IDE
+
+See [Launching and debugging from an IDE in OpenSearch](https://github.com/opensearch-project/OpenSearch/blob/main/TESTING.md#launching-and-debugging-from-an-ide)
+
 ## Generate Artifact
 
 In opensearch-sdk-java navigate to build/distributions. Look for tar ball in the form `opensearch-sdk-java-1.0.0-SNAPSHOT.tar`. If not found follow the below steps to create one:

build.gradle

@@ -11,6 +11,26 @@
 
 import java.nio.file.Files
 import org.gradle.api.internal.tasks.testing.junitplatform.JUnitPlatformTestFramework
+import org.opensearch.gradle.test.RestIntegTestTask
+import org.opensearch.gradle.testclusters.ExtensionsProperties
+
+buildscript {
+    ext {
+        opensearch_version = System.getProperty("opensearch.version", "3.0.0-SNAPSHOT")
+        isSnapshot = "true" == System.getProperty("build.snapshot", "true")
+        buildVersionQualifier = System.getProperty("build.version_qualifier", "")
+    }
+
+    repositories {
+        mavenLocal()
+        mavenCentral()
+        maven { url "https://aws.oss.sonatype.org/content/repositories/snapshots" }
+    }
+
+    dependencies {
+        classpath "org.opensearch.gradle:build-tools:${opensearch_version}"
+    }
+}
 
 plugins {
     id 'java-library'
@@ -22,21 +42,51 @@ plugins {
 }
 
 
+apply from: 'gradle/formatting.gradle'
+apply plugin: 'maven-publish'
+apply plugin: 'java'
+apply plugin: 'opensearch.opensearchplugin'
+apply plugin: 'opensearch.testclusters'
+
+opensearchplugin {
+    name 'opensearch-sdk-java'
+    description 'OpenSearch Software Development Kit'
+    classname 'org.opensearch.sdk.sample.helloworld.HelloWorldExtension'
+}
+
 ext {
     projectSubstitutions = [:]
     licenseFile = rootProject.file('LICENSE.txt')
     noticeFile = rootProject.file('NOTICE.txt')
 }
 
+dependencyLicenses.enabled = false
+thirdPartyAudit.enabled = false
+loggerUsageCheck.enabled = false
+forbiddenApisMain.enabled = false
+forbiddenApisTest.enabled = false
+filepermissions.enabled = false
+forbiddenPatterns.enabled = false
+testingConventions.enabled = false
+validateNebulaPom.enabled = false
+
+def _numNodes = findProperty('numNodes') as Integer ?: 1
+def testPort = 4500
+
+allprojects {
+    project.ext.licenseName = 'The Apache Software License, Version 2.0'
+    project.ext.licenseUrl = 'http://www.apache.org/licenses/LICENSE-2.0.txt'
+    group = 'org.opensearch'
+    version = opensearch_version.tokenize('-')[0] + '.0'
+    if (buildVersionQualifier) {
+        version += "-${buildVersionQualifier}"
+    }
+    if (isSnapshot) {
+        version += "-SNAPSHOT"
+    }
+}
 
-apply plugin: 'application'
-apply from: 'gradle/formatting.gradle'
-apply plugin: 'maven-publish'
 
-// Temporary to keep "gradle run" working
-// TODO: change this to an extension designed for testing instead of duplicating a sample
-// https://github.com/opensearch-project/opensearch-sdk-java/issues/175
-mainClassName = 'org.opensearch.sdk.sample.helloworld.HelloWorldExtension'
 
 
 group 'org.opensearch.sdk'
@@ -49,14 +99,26 @@ java {
 
 publishing {
     publications {
-        group = "${group}"
-        version = "${version}"
-        mavenJava(MavenPublication) {
-            from components.java
-        }
-        sourceCompatibility = 11
-        targetCompatibility = 11
-    }
+                // add license information to generated poms
+                all {
+                    pom {
+                        name = "opensearch-sdk-java"
+                        description = "OpenSearch SDK"
+                    }
+                    pom.withXml { XmlProvider xml ->
+                        Node node = xml.asNode()
+                        node.appendNode('inceptionYear', '2022')
+
+                        Node license = node.appendNode('licenses').appendNode('license')
+                        license.appendNode('name', project.licenseName)
+                        license.appendNode('url', project.licenseUrl)
+
+                        Node developer = node.appendNode('developers').appendNode('developer')
+                        developer.appendNode('name', 'opensearch-sdk-java')
+                        developer.appendNode('url', 'https://github.com/opensearch-project/opensearch-sdk-java')
+                    }
+                }
+            }
 
     repositories {
         maven {
@@ -89,6 +151,11 @@ dependencies {
     def junit5Version = "5.9.3"
     def junitPlatform = "1.9.3"
     def jaxbVersion = "2.3.1"
+    def jakartaVersion = "2.1.1"
+    def jakartaInjectVersion = "2.0.1"
+    def javaxVersion  = "1"
+    def guavaFailureAccessVersion = "1.0.1"
+    def aopallianceVersion = "1.0"
 
     api("org.opensearch:opensearch:${opensearchVersion}")
     implementation("org.apache.logging.log4j:log4j-api:${log4jVersion}")
@@ -99,6 +166,7 @@ dependencies {
     api("org.opensearch.client:opensearch-java:${opensearchVersion}")
     implementation("org.opensearch.plugin:transport-netty4-client:${opensearchVersion}")
     implementation("io.netty:netty-all:${nettyVersion}")
+    implementation("jakarta.inject:jakarta.inject-api:${jakartaInjectVersion}")
     testCompileOnly("junit:junit:${junit4Version}") {
         exclude module : 'hamcrest'
         exclude module : 'hamcrest-core'
@@ -108,6 +176,13 @@ dependencies {
     implementation("com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:${jacksonDatabindVersion}")
     implementation("com.fasterxml.jackson.datatype:jackson-datatype-jsr310:${jacksonDatabindVersion}")
     implementation("com.fasterxml.jackson.datatype:jackson-datatype-guava:${jacksonDatabindVersion}")
+    implementation("com.fasterxml.jackson.core:jackson-annotations:${jacksonDatabindVersion}")
+
+    implementation("com.google.guava:guava:${guavaVersion}")
+    implementation("javax.inject:javax.inject:${javaxVersion}")
+    implementation("com.google.guava:failureaccess:${guavaFailureAccessVersion}")
+    implementation("aopalliance:aopalliance:${aopallianceVersion}")
+
     constraints {
         implementation("com.google.guava:guava:${guavaVersion}") {
             because 'versions below 30.0 have active CVE'
@@ -118,6 +193,15 @@ dependencies {
     testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:${junit5Version}")
     testImplementation("org.opensearch.test:framework:${opensearchVersion}")
     testRuntimeOnly("org.junit.platform:junit-platform-launcher:${junitPlatform}")
+
+    configurations.all {
+        resolutionStrategy.force("jakarta.json:jakarta.json-api:${jakartaVersion}")
+        resolutionStrategy.force("com.fasterxml.jackson.core:jackson-databind:${jacksonDatabindVersion}")
+        resolutionStrategy.force("com.fasterxml.jackson.core:jackson-core:${jacksonDatabindVersion}")
+        resolutionStrategy.force("org.apache.logging.log4j:log4j-api:${log4jVersion}")
+        resolutionStrategy.force("org.apache.logging.log4j:log4j-core:${log4jVersion}")
+        resolutionStrategy.force("org.apache.logging.log4j:log4j-jul:${log4jVersion}")
+    }
 }
 
 // this task runs the helloworld sample extension
@@ -182,3 +266,71 @@ diffCoverageReport {
         failOnViolation = true
     }
 }
+
+task integTest(type: RestIntegTestTask) {
+    description = "Run tests against a cluster"
+    testClassesDirs = sourceSets.test.output.classesDirs
+    classpath = sourceSets.test.runtimeClasspath
+}
+//tasks.named("check").configure { dependsOn(integTest) }
+
+task startTestExtension(type: Exec) {
+    commandLine 'bash', '-c', "./gradlew helloWorld &"
+}
+
+integTest {
+    dependsOn(startTestExtension)
+
+    //TODO: find a way to add permissions for the tests
+    systemProperty 'tests.security.manager', 'false'
+
+    systemProperty "https", System.getProperty("https")
+    systemProperty "user", System.getProperty("user")
+    systemProperty "password", System.getProperty("password")
+
+    // The 'doFirst' delays till execution time.
+    doFirst {
+        // Tell the test JVM if the cluster JVM is running under a debugger so that tests can
+        // use longer timeouts for requests.
+        def isDebuggingCluster = getDebug() || System.getProperty("test.debug") != null
+        systemProperty 'cluster.debug', isDebuggingCluster
+        // Set number of nodes system property to be used in tests
+        systemProperty 'cluster.number_of_nodes', "1"
+        // There seems to be an issue when running multi node run or integ tasks with unicast_hosts
+        // not being written, the waitForAllConditions ensures it's written
+        getClusters().forEach { cluster ->
+            cluster.waitForAllConditions()
+        }
+    }
+
+    // The --debug-jvm command-line option makes the cluster debuggable; this makes the tests debuggable
+    if (System.getProperty("test.debug") != null) {
+        jvmArgs '-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=*:5005'
+    }
+}
+
+def testExtensionYml = new org.yaml.snakeyaml.Yaml().load(new File("src/test/resources/hello-world-extension.yml").newInputStream())
+
+task closeTestExtension (type: Exec) {
+    commandLine 'bash', '-c', "kill \$(lsof -i:${testExtensionYml.port})"
+}
+
+tasks.named("integTest").configure { finalizedBy(closeTestExtension) }
+
+testClusters.integTest {
+    extension(new ExtensionsProperties("${testExtensionYml.name}", "${testExtensionYml.uniqueId}", "${testExtensionYml.hostAddress}", "${testExtensionYml.port}", "${testExtensionYml.version}", "${testExtensionYml.opensearchVersion}", "${testExtensionYml.minimumCompatibleVersion}"))
+    testDistribution = "ARCHIVE"
+    // Cluster shrink exception thrown if we try to set numberOfNodes to 1, so only apply if > 1
+    if (_numNodes > 1) numberOfNodes = _numNodes
+    // When running integration tests it doesn't forward the --debug-jvm to the cluster anymore
+    // i.e. we have to use a custom property to flag when we want to debug elasticsearch JVM
+    // since we also support multi node integration tests we increase debugPort per node
+    if (System.getProperty("opensearch.debug") != null) {
+        def debugPort = 5005
+        nodes.forEach { node ->
+            node.jvmArgs("-agentlib:jdwp=transport=dt_socket,server=n,suspend=y,address=*:${debugPort}")
+            debugPort += 1
+        }
+    }
+
+}

src/main/resources/sample/helloworld-settings.yml

@@ -1,6 +1,6 @@
 extensionName: hello-world
 hostAddress: 127.0.0.1
-hostPort: 4532
+hostPort: 4500
 opensearchAddress: 127.0.0.1
 opensearchPort: 9200
 #ssl.transport.enabled: true

src/test/resources/hello-world-extension.yml

@@ -0,0 +1,7 @@
+name: hello-world
+uniqueId: opensearch-sdk-java-1
+hostAddress: '127.0.0.1'
+port: '4500'
+version: '1.0'
+opensearchVersion: '3.0.0'
+minimumCompatibleVersion: '3.0.0'