Adding request_id header to the logs through MDC Context

Signed-off-by: Sun Tan <sutan@redhat.com>

assembly/assembly-wsmaster-war/src/main/java/org/eclipse/che/api/deploy/RequestIdLoggerFilter.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2012-2017 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.api.deploy;
+
+import java.io.IOException;
+import javax.inject.Singleton;
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import org.slf4j.MDC;
+
+@Singleton
+public class RequestIdLoggerFilter implements Filter {
+
+  private static final String REQUEST_ID_HEADER = "X-Request-Id";
+  private static final String REQUEST_ID_MDC_KEY = "req_id";
+
+  @Override
+  public void init(FilterConfig filterConfig) throws ServletException {}
+
+  @Override
+  public final void doFilter(
+      ServletRequest request, ServletResponse response, FilterChain filterChain)
+      throws IOException, ServletException {
+    final HttpServletRequest httpRequest = (HttpServletRequest) request;
+    String requestId = httpRequest.getHeader(REQUEST_ID_HEADER);
+    if (requestId != null) {
+      MDC.put(REQUEST_ID_MDC_KEY, requestId);
+    }
+    filterChain.doFilter(request, response);
+  }
+
+  @Override
+  public void destroy() {}
+}

assembly/assembly-wsmaster-war/src/main/java/org/eclipse/che/api/deploy/WsMasterServletModule.java

@@ -43,6 +43,7 @@ protected void configureServlets() {
     bind(CorsFilter.class).in(Singleton.class);
 
     filter("/*").through(CorsFilter.class, corsFilterParams);
+    filter("/*").through(RequestIdLoggerFilter.class);
 
     serveRegex("^/api((?!(/(ws|eventbus)($|/.*)))/.*)").with(GuiceEverrestServlet.class);
     install(new org.eclipse.che.swagger.deploy.BasicSwaggerConfigurationModule());