Introduce Apache Camel LSP support

agents/ls-camel/pom.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Copyright (c) 2012-2018 Red Hat, Inc.
+    All rights reserved. This program and the accompanying materials
+    are made available under the terms of the Eclipse Public License v1.0
+    which accompanies this distribution, and is available at
+    http://www.eclipse.org/legal/epl-v10.html
+
+    Contributors:
+      Red Hat, Inc. - initial API and implementation
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>che-agents-parent</artifactId>
+        <groupId>org.eclipse.che</groupId>
+        <version>6.1.0-SNAPSHOT</version>
+    </parent>
+    <artifactId>ls-camel-agent</artifactId>
+    <name>Language Server Apache Camel Agent</name>
+</project>

agents/ls-camel/src/main/resources/installers/1.0.0/org.eclipse.che.ls.camel.json

@@ -0,0 +1,8 @@
+{
+  "id": "org.eclipse.che.ls.camel",
+  "version": "1.0.0",
+  "name": "Apache Camel language server",
+  "description": "Apache Camel intellisense",
+  "dependencies": [],
+  "properties": {}
+}

agents/ls-camel/src/main/resources/installers/1.0.0/org.eclipse.che.ls.camel.script.sh

@@ -0,0 +1,61 @@
+#
+# Copyright (c) 2012-2018 Red Hat, Inc.
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Eclipse Public License v1.0
+# which accompanies this distribution, and is available at
+# http://www.eclipse.org/legal/epl-v10.html
+#
+# Contributors:
+#   Red Hat, Inc. - initial API and implementation
+#
+
+
+is_current_user_root() {
+    test "$(id -u)" = 0
+}
+
+is_current_user_sudoer() {
+    sudo -n true > /dev/null 2>&1
+}
+
+set_sudo_command() {
+    if is_current_user_sudoer && ! is_current_user_root; then SUDO="sudo -E"; else unset SUDO; fi
+}
+
+set_sudo_command
+unset PACKAGES
+command -v tar >/dev/null 2>&1 || { PACKAGES=${PACKAGES}" tar"; }
+command -v curl >/dev/null 2>&1 || { PACKAGES=${PACKAGES}" curl"; }
+
+AGENT_BINARIES_URI=https://github.com/lhein/camel-language-server/releases/download/untagged-d42064681113e838bd59/camel-lsp-server-1.0.0-SNAPSHOT.jar
+CHE_DIR=$HOME/che
+LS_DIR=${CHE_DIR}/ls-camel
+LS_LAUNCHER=${LS_DIR}/launch.sh
+
+if [ -f /etc/centos-release ]; then
+    FILE="/etc/centos-release"
+    LINUX_TYPE=$(cat $FILE | awk '{print $1}')
+ elif [ -f /etc/redhat-release ]; then
+    FILE="/etc/redhat-release"
+    LINUX_TYPE=$(cat $FILE | cut -c 1-8)
+ else
+    FILE="/etc/os-release"
+    LINUX_TYPE=$(cat $FILE | grep ^ID= | tr '[:upper:]' '[:lower:]')
+    LINUX_VERSION=$(cat $FILE | grep ^VERSION_ID=)
+fi
+
+MACHINE_TYPE=$(uname -m)
+
+mkdir -p ${CHE_DIR}
+mkdir -p ${LS_DIR}
+
+
+###############################
+### Install Apache Camel LS ###
+###############################
+
+curl -L -s ${AGENT_BINARIES_URI} -o ${LS_DIR}/camel-lsp-server.jar
+
+touch ${LS_LAUNCHER}
+chmod +x ${LS_LAUNCHER}
+echo "java -jar ${LS_DIR}/camel-lsp-server.jar" > ${LS_LAUNCHER}

agents/pom.xml

@@ -38,5 +38,6 @@
         <module>ls-csharp</module>
         <module>test-ls</module>
         <module>ls-yaml</module>
+        <module>ls-camel</module>
     </modules>
 </project>

assembly/assembly-wsagent-war/pom.xml

@@ -35,6 +35,10 @@
             <groupId>org.eclipse.che.plugin</groupId>
             <artifactId>che-plugin-activity-server</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.eclipse.che.plugin</groupId>
+            <artifactId>che-plugin-camel-server</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.eclipse.che.plugin</groupId>
             <artifactId>che-plugin-composer-server</artifactId>

assembly/assembly-wsmaster-war/pom.xml

@@ -84,6 +84,10 @@
             <groupId>org.eclipse.che</groupId>
             <artifactId>git-credentials-agent</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.eclipse.che</groupId>
+            <artifactId>ls-camel-agent</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.eclipse.che</groupId>
             <artifactId>ls-csharp-agent</artifactId>

plugins/plugin-camel/che-plugin-camel-server/pom.xml

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Copyright (c) 2012-2018 Red Hat, Inc.
+    All rights reserved. This program and the accompanying materials
+    are made available under the terms of the Eclipse Public License v1.0
+    which accompanies this distribution, and is available at
+    http://www.eclipse.org/legal/epl-v10.html
+
+    Contributors:
+      Red Hat, Inc. - initial API and implementation
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>che-plugin-camel-parent</artifactId>
+        <groupId>org.eclipse.che.plugin</groupId>
+        <version>6.1.0-SNAPSHOT</version>
+    </parent>
+    <artifactId>che-plugin-camel-server</artifactId>
+    <name>Che Plugin :: Apache Camel :: Server</name>
+    <properties>
+        <findbugs.failonerror>false</findbugs.failonerror>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>com.google.inject</groupId>
+            <artifactId>guice</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.google.inject.extensions</groupId>
+            <artifactId>guice-multibindings</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>javax.inject</groupId>
+            <artifactId>javax.inject</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.che.core</groupId>
+            <artifactId>che-core-api-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.che.core</groupId>
+            <artifactId>che-core-api-languageserver</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.che.core</groupId>
+            <artifactId>che-core-api-languageserver-shared</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.che.core</groupId>
+            <artifactId>che-core-commons-inject</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.lsp4j</groupId>
+            <artifactId>org.eclipse.lsp4j</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.lsp4j</groupId>
+            <artifactId>org.eclipse.lsp4j.jsonrpc</artifactId>
+        </dependency>
+    </dependencies>
+</project>

plugins/plugin-camel/che-plugin-camel-server/src/main/java/org/eclipse/che/plugin/camel/server/inject/CamelModule.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2012-2018 Red Hat, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *   Red Hat, Inc. - initial API and implementation
+ */
+package org.eclipse.che.plugin.camel.server.inject;
+
+import static java.util.Arrays.asList;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.multibindings.Multibinder;
+import org.eclipse.che.api.languageserver.launcher.LanguageServerLauncher;
+import org.eclipse.che.api.languageserver.shared.model.LanguageDescription;
+import org.eclipse.che.inject.DynaModule;
+import org.eclipse.che.plugin.camel.server.languageserver.CamelLanguageServerLauncher;
+
+/** Apache Camel module for server side of Camel Language Server */
+@DynaModule
+public class CamelModule extends AbstractModule {
+  public static final String LANGUAGE_ID = "LANGUAGE_ID_APACHE_CAMEL";
+  private static final String[] EXTENSIONS = new String[] {"xml"};
+  private static final String MIME_TYPE = "text/xml";
+
+  @Override
+  protected void configure() {
+    Multibinder.newSetBinder(binder(), LanguageServerLauncher.class)
+        .addBinding()
+        .to(CamelLanguageServerLauncher.class);
+    LanguageDescription description = new LanguageDescription();
+    description.setFileExtensions(asList(EXTENSIONS));
+    description.setLanguageId(LANGUAGE_ID);
+    description.setMimeType(MIME_TYPE);
+    Multibinder.newSetBinder(binder(), LanguageDescription.class)
+        .addBinding()
+        .toInstance(description);
+  }
+}

plugins/plugin-camel/che-plugin-camel-server/src/main/java/org/eclipse/che/plugin/camel/server/languageserver/CamelLanguageServerLauncher.java

@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2012-2018 Red Hat, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *   Red Hat, Inc. - initial API and implementation
+ */
+package org.eclipse.che.plugin.camel.server.languageserver;
+
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Arrays;
+import javax.inject.Named;
+import org.eclipse.che.api.core.rest.HttpJsonRequestFactory;
+import org.eclipse.che.api.languageserver.exception.LanguageServerException;
+import org.eclipse.che.api.languageserver.launcher.LanguageServerLauncher;
+import org.eclipse.che.api.languageserver.launcher.LanguageServerLauncherTemplate;
+import org.eclipse.che.api.languageserver.registry.DocumentFilter;
+import org.eclipse.che.api.languageserver.registry.LanguageServerDescription;
+import org.eclipse.che.api.languageserver.registry.ServerInitializerObserver;
+import org.eclipse.che.plugin.camel.server.inject.CamelModule;
+import org.eclipse.lsp4j.ServerCapabilities;
+import org.eclipse.lsp4j.jsonrpc.Launcher;
+import org.eclipse.lsp4j.services.LanguageClient;
+import org.eclipse.lsp4j.services.LanguageServer;
+
+/** Launcher for Apache Camel Language Server */
+@Singleton
+public class CamelLanguageServerLauncher extends LanguageServerLauncherTemplate
+    implements ServerInitializerObserver {
+
+  private static final String REGEX = ".*\\.(xml)";
+  private static final LanguageServerDescription DESCRIPTION = createServerDescription();
+  private static LanguageServer camelLanguageServer;
+  private final Path launchScript;
+
+  @Inject
+  public CamelLanguageServerLauncher(
+      @Named("che.api") String apiUrl, HttpJsonRequestFactory requestFactory) {
+    launchScript = Paths.get(System.getenv("HOME"), "che/ls-camel/launch.sh");
+  }
+
+  @Override
+  public boolean isAbleToLaunch() {
+    return Files.exists(launchScript);
+  }
+
+  protected LanguageServer connectToLanguageServer(
+      final Process languageServerProcess, LanguageClient client) {
+    Launcher<LanguageServer> launcher =
+        Launcher.createLauncher(
+            client,
+            LanguageServer.class,
+            languageServerProcess.getInputStream(),
+            languageServerProcess.getOutputStream());
+    launcher.startListening();
+    setCamelLanguageServer(launcher.getRemoteProxy());
+    return launcher.getRemoteProxy();
+  }
+
+  protected Process startLanguageServerProcess(String projectPath) throws LanguageServerException {
+    ProcessBuilder processBuilder = new ProcessBuilder(launchScript.toString());
+    processBuilder.redirectInput(ProcessBuilder.Redirect.PIPE);
+    processBuilder.redirectOutput(ProcessBuilder.Redirect.PIPE);
+    try {
+      return processBuilder.start();
+    } catch (IOException e) {
+      throw new LanguageServerException("Can't start Apache Camel language server", e);
+    }
+  }
+
+  protected static LanguageServer getCamelLanguageServer() {
+    return camelLanguageServer;
+  }
+
+  protected static void setCamelLanguageServer(LanguageServer camelLanguageServer) {
+    CamelLanguageServerLauncher.camelLanguageServer = camelLanguageServer;
+  }
+
+  public LanguageServerDescription getDescription() {
+    return DESCRIPTION;
+  }
+
+  private static LanguageServerDescription createServerDescription() {
+    LanguageServerDescription description =
+        new LanguageServerDescription(
+            "org.eclipse.che.plugin.camel.server.languageserver",
+            null,
+            Arrays.asList(new DocumentFilter(CamelModule.LANGUAGE_ID, REGEX, null)));
+    return description;
+  }
+
+  @Override
+  public void onServerInitialized(
+      LanguageServerLauncher arg0, LanguageServer arg1, ServerCapabilities arg2, String arg3) {
+    // nothing to do
+  }
+}

plugins/plugin-camel/pom.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Copyright (c) 2012-2018 Red Hat, Inc.
+    All rights reserved. This program and the accompanying materials
+    are made available under the terms of the Eclipse Public License v1.0
+    which accompanies this distribution, and is available at
+    http://www.eclipse.org/legal/epl-v10.html
+
+    Contributors:
+      Red Hat, Inc. - initial API and implementation
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <artifactId>che-plugin-parent</artifactId>
+        <groupId>org.eclipse.che.plugin</groupId>
+        <version>6.1.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>che-plugin-camel-parent</artifactId>
+    <packaging>pom</packaging>
+    <name>Che Plugin :: Apache Camel :: Parent</name>
+    <modules>
+        <module>che-plugin-camel-server</module>
+    </modules>
+</project>

plugins/pom.xml

@@ -58,5 +58,6 @@
         <module>plugin-testing-php</module>
         <module>plugin-pullrequest-parent</module>
         <module>plugin-yaml</module>
+        <module>plugin-camel</module>
     </modules>
 </project>

pom.xml

@@ -182,6 +182,11 @@
                 <artifactId>git-credentials-agent</artifactId>
                 <version>${che.version}</version>
             </dependency>
+            <dependency>
+                <groupId>org.eclipse.che</groupId>
+                <artifactId>ls-camel-agent</artifactId>
+                <version>${che.version}</version>
+            </dependency>
             <dependency>
                 <groupId>org.eclipse.che</groupId>
                 <artifactId>ls-csharp-agent</artifactId>
@@ -1013,6 +1018,11 @@
                 <artifactId>che-plugin-activity-wsmaster</artifactId>
                 <version>${che.version}</version>
             </dependency>
+            <dependency>
+                <groupId>org.eclipse.che.plugin</groupId>
+                <artifactId>che-plugin-camel-server</artifactId>
+                <version>${che.version}</version>
+            </dependency>
             <dependency>
                 <groupId>org.eclipse.che.plugin</groupId>
                 <artifactId>che-plugin-composer-ide</artifactId>