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play.CorePlugin Maven / Gradle / Ivy
package play;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
import com.google.gson.JsonPrimitive;
import com.jamonapi.MonitorFactory;
import com.jamonapi.utils.Misc;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.apache.commons.lang.StringUtils;
import play.Play.Mode;
import play.classloading.ApplicationClasses.ApplicationClass;
import play.classloading.enhancers.ContinuationEnhancer;
import play.classloading.enhancers.ControllersEnhancer;
import play.classloading.enhancers.Enhancer;
import play.classloading.enhancers.LocalvariablesNamesEnhancer;
import play.classloading.enhancers.MailerEnhancer;
import play.classloading.enhancers.PropertiesEnhancer;
import play.classloading.enhancers.SigEnhancer;
import play.exceptions.UnexpectedException;
import play.libs.Crypto;
import play.mvc.Http.Header;
import play.mvc.Http.Request;
import play.mvc.Http.Response;
/**
* Plugin used for core tasks
*/
public class CorePlugin extends PlayPlugin {
/**
* Get the application status
*/
public static String computeApplicationStatus(boolean json) {
if (json) {
JsonObject o = new JsonObject();
for (PlayPlugin plugin : Play.pluginCollection.getEnabledPlugins()) {
try {
JsonObject status = plugin.getJsonStatus();
if (status != null) {
o.add(plugin.getClass().getName(), status);
}
} catch (Throwable e) {
JsonObject error = new JsonObject();
error.add("error", new JsonPrimitive(e.getMessage()));
o.add(plugin.getClass().getName(), error);
}
}
return o.toString();
}
StringBuilder dump = new StringBuilder(16);
for (PlayPlugin plugin : Play.pluginCollection.getEnabledPlugins()) {
try {
String status = plugin.getStatus();
if (status != null) {
dump.append(status);
dump.append("\n");
}
} catch (Throwable e) {
dump.append(plugin.getClass().getName()).append(".getStatus() has failed (").append(e.getMessage()).append(")");
}
}
return dump.toString();
}
/**
* Intercept /@status and check that the Authorization header is valid.
* Then ask each plugin for a status dump and send it over the HTTP response.
*
* You can ask the /@status using the authorization header and putting your status secret key in it.
* Prior to that you would be required to start play with a -DstatusKey=yourkey
*/
@Override
public boolean rawInvocation(Request request, Response response) throws Exception {
if (Play.mode == Mode.DEV && request.path.equals("/@kill")) {
System.out.println("@KILLED");
if (Play.standalonePlayServer) {
System.exit(0);
} else {
Logger.error("Cannot execute @kill since Play is not running as standalone server");
}
}
if (request.path.equals("/@status") || request.path.equals("/@status.json")) {
if(!Play.started) {
response.print("Application is not started");
response.status = 503;
return true;
}
response.contentType = request.path.contains(".json") ? "application/json" : "text/plain";
Header authorization = request.headers.get("authorization");
if (authorization != null && (Crypto.sign("@status").equals(authorization.value()) || System.getProperty("statusKey", Play.secretKey).equals(authorization.value()))) {
response.print(computeApplicationStatus(request.path.contains(".json")));
response.status = 200;
return true;
}
response.status = 401;
if (response.contentType.equals("application/json")) {
response.print("{\"error\": \"Not authorized\"}");
} else {
response.print("Not authorized");
}
return true;
}
return super.rawInvocation(request, response);
}
/**
* Retrieve status about play core.
*/
@Override
public String getStatus() {
StringWriter sw = new StringWriter();
PrintWriter out = new PrintWriter(sw);
out.println("Java:");
out.println("~~~~~");
out.println("Version: " + System.getProperty("java.version"));
out.println("Home: " + System.getProperty("java.home"));
out.println("Max memory: " + Runtime.getRuntime().maxMemory());
out.println("Free memory: " + Runtime.getRuntime().freeMemory());
out.println("Total memory: " + Runtime.getRuntime().totalMemory());
out.println("Available processors: " + Runtime.getRuntime().availableProcessors());
out.println();
out.println("Play framework:");
out.println("~~~~~~~~~~~~~~~");
out.println("Version: " + Play.version);
out.println("Path: " + Play.frameworkPath);
out.println("ID: " + (StringUtils.isEmpty(Play.id) ? "(not set)" : Play.id));
out.println("Mode: " + Play.mode);
out.println("Tmp dir: " + (Play.tmpDir == null ? "(no tmp dir)" : Play.tmpDir));
out.println();
out.println("Application:");
out.println("~~~~~~~~~~~~");
out.println("Path: " + Play.applicationPath);
out.println("Name: " + Play.configuration.getProperty("application.name", "(not set)"));
out.println("Started at: " + (Play.started ? new SimpleDateFormat("MM/dd/yyyy HH:mm").format(new Date(Play.startedAt)) : "Not yet started"));
out.println();
out.println("Loaded modules:");
out.println("~~~~~~~~~~~~~~");
for (String module : Play.modules.keySet()) {
out.println(module + " at " + Play.modules.get(module).getRealFile());
}
out.println();
out.println("Loaded plugins:");
out.println("~~~~~~~~~~~~~~");
for (PlayPlugin plugin : Play.pluginCollection.getAllPlugins()) {
out.println(plugin.index + ":" + plugin.getClass().getName() + " [" + (Play.pluginCollection.isEnabled(plugin) ? "enabled" : "disabled") + "]");
}
out.println();
out.println("Threads:");
out.println("~~~~~~~~");
try {
visit(out, getRootThread(), 0);
} catch (Throwable e) {
out.println("Oops; " + e.getMessage());
}
out.println();
out.println("Requests execution pool:");
out.println("~~~~~~~~~~~~~~~~~~~~~~~~");
out.println("Pool size: " + Invoker.executor.getPoolSize());
out.println("Active count: " + Invoker.executor.getActiveCount());
out.println("Scheduled task count: " + Invoker.executor.getTaskCount());
out.println("Queue size: " + Invoker.executor.getQueue().size());
out.println();
try {
out.println("Monitors:");
out.println("~~~~~~~~");
Object[][] data = Misc.sort(MonitorFactory.getRootMonitor().getBasicData(), 3, "desc");
int lm = 10;
for (Object[] row : data) {
if (row[0].toString().length() > lm) {
lm = row[0].toString().length();
}
}
for (Object[] row : data) {
if (((Double) row[1]) > 0) {
out.println(String.format("%-" + (lm) + "s -> %8.0f hits; %8.1f avg; %8.1f min; %8.1f max;", row[0], row[1], row[2], row[6], row[7]));
}
}
} catch (Exception e) {
out.println("No monitors found");
}
return sw.toString();
}
@Override
public JsonObject getJsonStatus() {
JsonObject status = new JsonObject();
{
JsonObject java = new JsonObject();
java.addProperty("version", System.getProperty("java.version"));
status.add("java", java);
}
{
JsonObject memory = new JsonObject();
memory.addProperty("max", Runtime.getRuntime().maxMemory());
memory.addProperty("free", Runtime.getRuntime().freeMemory());
memory.addProperty("total", Runtime.getRuntime().totalMemory());
status.add("memory", memory);
}
{
JsonObject application = new JsonObject();
application.addProperty("uptime", Play.started ? System.currentTimeMillis() - Play.startedAt : -1);
application.addProperty("path", Play.applicationPath.getAbsolutePath());
status.add("application", application);
}
{
JsonObject pool = new JsonObject();
pool.addProperty("size", Invoker.executor.getPoolSize());
pool.addProperty("active", Invoker.executor.getActiveCount());
pool.addProperty("scheduled", Invoker.executor.getTaskCount());
pool.addProperty("queue", Invoker.executor.getQueue().size());
status.add("pool", pool);
}
{
JsonArray monitors = new JsonArray();
try {
Object[][] data = Misc.sort(MonitorFactory.getRootMonitor().getBasicData(), 3, "desc");
for (Object[] row : data) {
if (((Double) row[1]) > 0) {
JsonObject o = new JsonObject();
o.addProperty("name", row[0].toString());
o.addProperty("hits", (Double) row[1]);
o.addProperty("avg", (Double) row[2]);
o.addProperty("min", (Double) row[6]);
o.addProperty("max", (Double) row[7]);
monitors.add(o);
}
}
} catch (Exception e) {
e.printStackTrace();
}
status.add("monitors", monitors);
}
return status;
}
/**
* Recursively visit all JVM threads
*/
static void visit(PrintWriter out, ThreadGroup group, int level) {
// Get threads in `group'
int numThreads = group.activeCount();
Thread[] threads = new Thread[numThreads * 2];
numThreads = group.enumerate(threads, false);
// Enumerate each thread in `group'
for (int i = 0; i < numThreads; i++) {
// Get thread
Thread thread = threads[i];
out.println(thread + " " + thread.getState());
}
// Get thread subgroups of `group'
int numGroups = group.activeGroupCount();
ThreadGroup[] groups = new ThreadGroup[numGroups * 2];
numGroups = group.enumerate(groups, false);
// Recursively visit each subgroup
for (int i = 0; i < numGroups; i++) {
visit(out, groups[i], level + 1);
}
}
/**
* Retrieve the JVM root thread group.
*/
static ThreadGroup getRootThread() {
ThreadGroup root = Thread.currentThread().getThreadGroup().getParent();
while (root.getParent() != null) {
root = root.getParent();
}
return root;
}
@Override
public void enhance(ApplicationClass applicationClass) throws Exception {
Class[] enhancers = new Class[]{
ContinuationEnhancer.class,
SigEnhancer.class,
ControllersEnhancer.class,
MailerEnhancer.class,
PropertiesEnhancer.class,
LocalvariablesNamesEnhancer.class
};
for (Class enhancer : enhancers) {
try {
long start = System.currentTimeMillis();
((Enhancer) enhancer.newInstance()).enhanceThisClass(applicationClass);
if (Logger.isTraceEnabled()) {
Logger.trace("%sms to apply %s to %s", System.currentTimeMillis() - start, enhancer.getSimpleName(), applicationClass.name);
}
} catch (Exception e) {
throw new UnexpectedException("While applying " + enhancer + " on " + applicationClass.name, e);
}
}
}
}
