add server component

apm-collector/apm-collector-component/server-component/src/main/java/org/skywalking/apm/collector/server/grpc/GRPCHandler.java

+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * Licensed 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.
+ *
+ * Project repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.server.grpc;
+
+import org.skywalking.apm.collector.core.framework.Handler;
+
+/**
+ * @author peng-yongsheng
+ */
+public interface GRPCHandler extends Handler {
+}

apm-collector/apm-collector-component/server-component/src/main/java/org/skywalking/apm/collector/server/grpc/GRPCServer.java

+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * Licensed 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.
+ *
+ * Project repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.server.grpc;
+
+import io.grpc.netty.NettyServerBuilder;
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import org.skywalking.apm.collector.core.framework.Handler;
+import org.skywalking.apm.collector.core.server.Server;
+import org.skywalking.apm.collector.core.server.ServerException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * @author peng-yongsheng
+ */
+public class GRPCServer implements Server {
+
+    private final Logger logger = LoggerFactory.getLogger(GRPCServer.class);
+
+    private final String host;
+    private final int port;
+    private io.grpc.Server server;
+    private NettyServerBuilder nettyServerBuilder;
+
+    public GRPCServer(String host, int port) {
+        this.host = host;
+        this.port = port;
+    }
+
+    @Override public String hostPort() {
+        return host + ":" + port;
+    }
+
+    @Override public String serverClassify() {
+        return "Google-RPC";
+    }
+
+    @Override public void initialize() throws ServerException {
+        InetSocketAddress address = new InetSocketAddress(host, port);
+        nettyServerBuilder = NettyServerBuilder.forAddress(address);
+        logger.info("Server started, host {} listening on {}", host, port);
+    }
+
+    @Override public void start() throws ServerException {
+        try {
+            server = nettyServerBuilder.build();
+            server.start();
+        } catch (IOException e) {
+            throw new GRPCServerException(e.getMessage(), e);
+        }
+    }
+
+    @Override public void addHandler(Handler handler) {
+        nettyServerBuilder.addService((io.grpc.BindableService)handler);
+    }
+}

apm-collector/apm-collector-component/server-component/src/main/java/org/skywalking/apm/collector/server/grpc/GRPCServerException.java

+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * Licensed 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.
+ *
+ * Project repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.server.grpc;
+
+import org.skywalking.apm.collector.core.server.ServerException;
+
+/**
+ * @author peng-yongsheng
+ */
+public class GRPCServerException extends ServerException {
+
+    public GRPCServerException(String message) {
+        super(message);
+    }
+
+    public GRPCServerException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

apm-collector/apm-collector-component/server-component/src/main/java/org/skywalking/apm/collector/server/jetty/ArgumentsParseException.java

+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * Licensed 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.
+ *
+ * Project repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.server.jetty;
+
+import org.skywalking.apm.collector.core.CollectorException;
+
+/**
+ * @author peng-yongsheng
+ */
+public class ArgumentsParseException extends CollectorException {
+
+    public ArgumentsParseException(String message) {
+        super(message);
+    }
+
+    public ArgumentsParseException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

apm-collector/apm-collector-component/server-component/src/main/java/org/skywalking/apm/collector/server/jetty/JettyHandler.java

+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * Licensed 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.
+ *
+ * Project repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.server.jetty;
+
+import com.google.gson.JsonElement;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.Enumeration;
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import org.skywalking.apm.collector.core.framework.Handler;
+import org.skywalking.apm.collector.core.util.ObjectUtils;
+
+/**
+ * @author peng-yongsheng
+ */
+public abstract class JettyHandler extends HttpServlet implements Handler {
+
+    public abstract String pathSpec();
+
+    @Override
+    protected final void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        try {
+            reply(resp, doGet(req));
+        } catch (ArgumentsParseException e) {
+            replyError(resp, e.getMessage(), HttpServletResponse.SC_BAD_REQUEST);
+        }
+    }
+
+    protected abstract JsonElement doGet(HttpServletRequest req) throws ArgumentsParseException;
+
+    @Override
+    protected final void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        try {
+            reply(resp, doPost(req));
+        } catch (ArgumentsParseException e) {
+            replyError(resp, e.getMessage(), HttpServletResponse.SC_BAD_REQUEST);
+        }
+    }
+
+    protected abstract JsonElement doPost(HttpServletRequest req) throws ArgumentsParseException;
+
+    @Override
+    protected final void doHead(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        super.doHead(req, resp);
+    }
+
+    @Override protected final long getLastModified(HttpServletRequest req) {
+        return super.getLastModified(req);
+    }
+
+    @Override
+    protected final void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        super.doPut(req, resp);
+    }
+
+    @Override
+    protected final void doDelete(HttpServletRequest req,
+        HttpServletResponse resp) throws ServletException, IOException {
+        super.doDelete(req, resp);
+    }
+
+    @Override
+    protected final void doOptions(HttpServletRequest req,
+        HttpServletResponse resp) throws ServletException, IOException {
+        super.doOptions(req, resp);
+    }
+
+    @Override
+    protected final void doTrace(HttpServletRequest req,
+        HttpServletResponse resp) throws ServletException, IOException {
+        super.doTrace(req, resp);
+    }
+
+    @Override
+    protected final void service(HttpServletRequest req,
+        HttpServletResponse resp) throws ServletException, IOException {
+        super.service(req, resp);
+    }
+
+    @Override public final void service(ServletRequest req, ServletResponse res) throws ServletException, IOException {
+        super.service(req, res);
+    }
+
+    @Override public final void destroy() {
+        super.destroy();
+    }
+
+    @Override public final String getInitParameter(String name) {
+        return super.getInitParameter(name);
+    }
+
+    @Override public final Enumeration<String> getInitParameterNames() {
+        return super.getInitParameterNames();
+    }
+
+    @Override public final ServletConfig getServletConfig() {
+        return super.getServletConfig();
+    }
+
+    @Override public final ServletContext getServletContext() {
+        return super.getServletContext();
+    }
+
+    @Override public final String getServletInfo() {
+        return super.getServletInfo();
+    }
+
+    @Override public final void init(ServletConfig config) throws ServletException {
+        super.init(config);
+    }
+
+    @Override public final void init() throws ServletException {
+        super.init();
+    }
+
+    @Override public final void log(String msg) {
+        super.log(msg);
+    }
+
+    @Override public final void log(String message, Throwable t) {
+        super.log(message, t);
+    }
+
+    @Override public final String getServletName() {
+        return super.getServletName();
+    }
+
+    private void reply(HttpServletResponse response, JsonElement resJson) throws IOException {
+        response.setContentType("text/json");
+        response.setCharacterEncoding("utf-8");
+        response.setStatus(HttpServletResponse.SC_OK);
+
+        PrintWriter out = response.getWriter();
+        if (ObjectUtils.isNotEmpty(resJson)) {
+            out.print(resJson);
+        }
+        out.flush();
+        out.close();
+    }
+
+    private void replyError(HttpServletResponse response, String errorMessage, int status) throws IOException {
+        response.setContentType("text/plain");
+        response.setCharacterEncoding("utf-8");
+        response.setStatus(status);
+        response.setHeader("error-message", errorMessage);
+
+        PrintWriter out = response.getWriter();
+        out.flush();
+        out.close();
+    }
+}
\ No newline at end of file

apm-collector/apm-collector-component/server-component/src/main/java/org/skywalking/apm/collector/server/jetty/JettyServer.java

+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * Licensed 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.
+ *
+ * Project repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.server.jetty;
+
+import java.net.InetSocketAddress;
+import javax.servlet.http.HttpServlet;
+import org.eclipse.jetty.servlet.ServletContextHandler;
+import org.eclipse.jetty.servlet.ServletHolder;
+import org.skywalking.apm.collector.core.framework.Handler;
+import org.skywalking.apm.collector.core.server.Server;
+import org.skywalking.apm.collector.core.server.ServerException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * @author peng-yongsheng
+ */
+public class JettyServer implements Server {
+
+    private final Logger logger = LoggerFactory.getLogger(JettyServer.class);
+
+    private final String host;
+    private final int port;
+    private final String contextPath;
+    private org.eclipse.jetty.server.Server server;
+    private ServletContextHandler servletContextHandler;
+
+    public JettyServer(String host, int port, String contextPath) {
+        this.host = host;
+        this.port = port;
+        this.contextPath = contextPath;
+    }
+
+    @Override public String hostPort() {
+        return host + ":" + port;
+    }
+
+    @Override public String serverClassify() {
+        return "Jetty";
+    }
+
+    @Override public void initialize() throws ServerException {
+        server = new org.eclipse.jetty.server.Server(new InetSocketAddress(host, port));
+
+        servletContextHandler = new ServletContextHandler(ServletContextHandler.NO_SESSIONS);
+        servletContextHandler.setContextPath(contextPath);
+        logger.info("http server root context path: {}", contextPath);
+
+        server.setHandler(servletContextHandler);
+    }
+
+    @Override public void addHandler(Handler handler) {
+        ServletHolder servletHolder = new ServletHolder();
+        servletHolder.setServlet((HttpServlet)handler);
+        servletContextHandler.addServlet(servletHolder, ((JettyHandler)handler).pathSpec());
+    }
+
+    @Override public void start() throws ServerException {
+        try {
+            server.start();
+        } catch (Exception e) {
+            throw new JettyServerException(e.getMessage(), e);
+        }
+    }
+}

apm-collector/apm-collector-component/server-component/src/main/java/org/skywalking/apm/collector/server/jetty/JettyServerException.java

+/*
+ * Copyright 2017, OpenSkywalking Organization All rights reserved.
+ *
+ * Licensed 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.
+ *
+ * Project repository: https://github.com/OpenSkywalking/skywalking
+ */
+
+package org.skywalking.apm.collector.server.jetty;
+
+import org.skywalking.apm.collector.core.server.ServerException;
+
+/**
+ * @author peng-yongsheng
+ */
+public class JettyServerException extends ServerException {
+
+    public JettyServerException(String message) {
+        super(message);
+    }
+
+    public JettyServerException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}