Add Wildfly integration test

An important use case for our users is deploying our clients inside of
applications containers like Wildly. Sometimes, we make changes that
unintentionally break this use case. We need to know before we ship a
release that we have broken such use cases. As Wildfly is one of the
bigger application containers, this commit starts by adding an
integration test that deploys an application using the transport client
to Wildfly and ensures that all is well. Future work can add similar
integration tests for the low-level and high-level REST clients.

Relates #24147

qa/wildfly/build.gradle

@@ -0,0 +1,198 @@
+import org.elasticsearch.gradle.LoggedExec
+import org.elasticsearch.gradle.VersionProperties
+import org.apache.tools.ant.taskdefs.condition.Os
+
+import java.nio.charset.StandardCharsets
+import java.nio.file.Files
+import java.util.stream.Stream
+
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * 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
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+apply plugin: 'war'
+apply plugin: 'elasticsearch.build'
+apply plugin: 'elasticsearch.rest-test'
+
+final String wildflyVersion = '10.0.0.Final'
+final String wildflyDir = "${buildDir}/wildfly"
+final String wildflyInstall = "${buildDir}/wildfly/wildfly-${wildflyVersion}"
+// TODO: use ephemeral ports
+final int portOffset = 30000
+final int managementPort = 9990 + portOffset
+// we skip these tests on Windows so we do no need to worry about compatibility here
+final String stopWildflyCommand = "${wildflyInstall}/bin/jboss-cli.sh --controller=localhost:${managementPort} --connect command=:shutdown"
+
+repositories {
+    mavenCentral()
+    // the Wildfly distribution is not available via a repository, so we fake an Ivy repository on top of the download site
+    ivy {
+        url "http://download.jboss.org"
+        layout 'pattern', {
+            artifact 'wildfly/[revision]/[module]-[revision].[ext]'
+        }
+    }
+}
+
+configurations {
+    wildfly
+}
+
+dependencies {
+    providedCompile 'javax.enterprise:cdi-api:1.2'
+    providedCompile 'org.jboss.spec.javax.annotation:jboss-annotations-api_1.2_spec:1.0.0.Final'
+    providedCompile 'org.jboss.spec.javax.ws.rs:jboss-jaxrs-api_2.0_spec:1.0.0.Final'
+    compile ('org.jboss.resteasy:resteasy-jackson2-provider:3.0.19.Final') {
+        exclude module: 'jackson-annotations'
+        exclude module: 'jackson-core'
+        exclude module: 'jackson-databind'
+        exclude module: 'jackson-jaxrs-json-provider'
+    }
+    compile "com.fasterxml.jackson.core:jackson-annotations:${versions.jackson}"
+    compile "com.fasterxml.jackson.core:jackson-core:${versions.jackson}"
+    compile "com.fasterxml.jackson.core:jackson-databind:${versions.jackson}"
+    compile "com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:${versions.jackson}"
+    compile "com.fasterxml.jackson.jaxrs:jackson-jaxrs-base:${versions.jackson}"
+    compile "com.fasterxml.jackson.module:jackson-module-jaxb-annotations:${versions.jackson}"
+    compile "org.apache.logging.log4j:log4j-api:${versions.log4j}"
+    compile "org.apache.logging.log4j:log4j-core:${versions.log4j}"
+    compile project(path: ':client:transport', configuration: 'runtime')
+    wildfly "org.jboss:wildfly:${wildflyVersion}@zip"
+    testCompile "org.elasticsearch.test:framework:${VersionProperties.elasticsearch}"
+}
+
+task unzipWildfly(type: Sync) {
+    into wildflyDir
+    from { zipTree(configurations.wildfly.singleFile) }
+}
+
+task deploy(type: Copy) {
+    dependsOn unzipWildfly, war
+    from war
+    into "${wildflyInstall}/standalone/deployments"
+}
+
+task writeElasticsearchProperties {
+    onlyIf { !Os.isFamily(Os.FAMILY_WINDOWS) }
+    dependsOn 'integTestCluster#wait', deploy
+    doLast {
+        final File elasticsearchProperties =
+                file("${wildflyInstall}/standalone/configuration/elasticsearch.properties")
+        elasticsearchProperties.write(
+                [
+                        "transport.uri=${-> integTest.getNodes().get(0).transportUri()}",
+                        "cluster.name=${-> integTest.getNodes().get(0).clusterName}"
+                ].join("\n"))
+    }
+}
+
+// the default configuration ships with IPv6 disabled but our cluster could be bound to IPv6 if the host supports it
+task enableIPv6 {
+    dependsOn unzipWildfly
+    doLast {
+        final File standaloneConf = file("${wildflyInstall}/bin/standalone.conf")
+        final List<String> lines =
+                Files.readAllLines(standaloneConf.toPath())
+                        .collect { line -> line.replace("-Djava.net.preferIPv4Stack=true", "-Djava.net.preferIPv4Stack=false") }
+        standaloneConf.write(lines.join("\n"))
+    }
+}
+
+task startWildfly {
+    dependsOn enableIPv6, writeElasticsearchProperties
+    doFirst {
+        // we skip these tests on Windows so we do no need to worry about compatibility here
+        final File script = new File(project.buildDir, "wildfly/wildfly.killer.sh")
+        script.setText(
+                ["function shutdown {",
+                 "  ${stopWildflyCommand}",
+                 "}",
+                 "trap shutdown EXIT",
+                 // will wait indefinitely for input, but we never pass input, and the pipe is only closed when the build dies
+                 "read line"].join('\n'), 'UTF-8')
+        final ProcessBuilder pb = new ProcessBuilder("bash", script.absolutePath)
+        pb.start()
+    }
+    doLast {
+        // we skip these tests on Windows so we do no need to worry about compatibility here
+        final ProcessBuilder pb =
+                new ProcessBuilder("${wildflyInstall}/bin/standalone.sh", "-Djboss.socket.binding.port-offset=${portOffset}")
+        final Process process = pb.start()
+        new BufferedReader(new InputStreamReader(process.getInputStream())).withReader { br ->
+            String line
+            while ((line = br.readLine()) != null) {
+                if (line.matches(".*WildFly Full \\d+\\.\\d+\\.\\d+\\.Final \\(WildFly Core \\d+\\.\\d+\\.\\d+\\.Final\\) started.*")) {
+                    break
+                }
+            }
+        }
+    }
+}
+
+task configureTransportClient(type: LoggedExec) {
+    dependsOn startWildfly
+    // we skip these tests on Windows so we do no need to worry about compatibility here
+    commandLine "${wildflyInstall}/bin/jboss-cli.sh",
+            "--controller=localhost:${managementPort}",
+            "--connect",
+            "--command=/system-property=elasticsearch.properties:add(value=\${jboss.server.config.dir}/elasticsearch.properties)"
+}
+
+task stopWildfly(type: LoggedExec) {
+    commandLine stopWildflyCommand.split(' ')
+}
+
+if (!Os.isFamily(Os.FAMILY_WINDOWS)) {
+    integTestRunner.dependsOn(configureTransportClient)
+    final TaskExecutionAdapter logDumpListener = new TaskExecutionAdapter() {
+        @Override
+        void afterExecute(final Task task, final TaskState state) {
+            if (state.failure != null) {
+                final File logFile = new File(wildflyInstall, "standalone/log/server.log")
+                println("\nWildfly server log (from ${logFile}):")
+                println('-----------------------------------------')
+                final Stream<String> stream = Files.lines(logFile.toPath(), StandardCharsets.UTF_8)
+                try {
+                    for (String line : stream) {
+                        println(line)
+                    }
+                } finally {
+                    stream.close()
+                }
+                println('=========================================')
+            }
+        }
+    }
+    integTestRunner.doFirst {
+        project.gradle.addListener(logDumpListener)
+    }
+    integTestRunner.doLast {
+        project.gradle.removeListener(logDumpListener)
+    }
+    integTestRunner.finalizedBy(stopWildfly)
+} else {
+    integTest.enabled = false
+}
+
+check.dependsOn(integTest)
+
+test.enabled = false
+
+dependencyLicenses.enabled = false
+
+thirdPartyAudit.enabled = false

qa/wildfly/src/main/java/org/elasticsearch/wildfly/model/Employee.java

@@ -0,0 +1,87 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * 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
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.wildfly.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import javax.ws.rs.Consumes;
+import javax.ws.rs.core.MediaType;
+
+import java.util.List;
+
+@Consumes(MediaType.APPLICATION_JSON)
+public class Employee {
+
+    @JsonProperty(value = "first_name")
+    private String firstName;
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    @JsonProperty(value = "last_name")
+    private String lastName;
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    @JsonProperty(value = "age")
+    private int age;
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    @JsonProperty(value = "about")
+    private String about;
+
+    public String getAbout() {
+        return about;
+    }
+
+    public void setAbout(String about) {
+        this.about = about;
+    }
+
+    @JsonProperty(value = "interests")
+    private List<String> interests;
+
+    public List<String> getInterests() {
+        return interests;
+    }
+
+    public void setInterests(List<String> interests) {
+        this.interests = interests;
+    }
+
+}

qa/wildfly/src/main/java/org/elasticsearch/wildfly/transport/TransportClientActivator.java

@@ -0,0 +1,36 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * 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
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.wildfly.transport;
+
+import javax.ws.rs.ApplicationPath;
+import javax.ws.rs.core.Application;
+
+import java.util.Collections;
+import java.util.Set;
+
+@ApplicationPath("/transport")
+public class TransportClientActivator extends Application {
+
+    @Override
+    public Set<Class<?>> getClasses() {
+        return Collections.singleton(TransportClientEmployeeResource.class);
+    }
+
+}