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/*
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*
* Copyright (c) 2012-2013 Oracle and/or its affiliates. All rights reserved.
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package org.glassfish.admin.rest.composite;
import com.sun.enterprise.v3.common.ActionReporter;
import java.net.URI;
import java.util.Collection;
import java.util.List;
import java.util.Locale;
import java.util.Properties;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import javax.security.auth.Subject;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.PathSegment;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.ResponseBuilder;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.core.UriBuilder;
import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;
import org.glassfish.admin.rest.Constants;
import org.glassfish.admin.rest.RestResource;
import org.glassfish.admin.rest.model.ResponseBody;
import org.glassfish.admin.rest.model.RestCollectionResponseBody;
import org.glassfish.admin.rest.model.RestModelResponseBody;
import org.glassfish.admin.rest.model.SseResponseBody;
import org.glassfish.admin.rest.resources.AbstractResource;
import org.glassfish.admin.rest.utils.DetachedCommandHelper;
import org.glassfish.admin.rest.utils.JsonFilter;
import org.glassfish.admin.rest.utils.JsonUtil;
import org.glassfish.admin.rest.utils.SseCommandHelper;
import org.glassfish.admin.rest.utils.StringUtil;
import org.glassfish.admin.rest.utils.Util;
import org.glassfish.admin.rest.utils.xml.RestActionReporter;
import org.glassfish.api.ActionReport;
import org.glassfish.api.admin.CommandRunner;
import org.glassfish.api.admin.ParameterMap;
import org.glassfish.internal.api.Globals;
import org.glassfish.jersey.internal.util.collection.Ref;
import org.glassfish.jersey.media.sse.EventOutput;
/**
* This is the base class for all composite resources. It provides all of the basic configuration and utilities needed
* by composites. For top-level resources, the @Path and @Service annotations are still
* required, though, in order for the resource to be located and configured properly.
* @author jdlee
*/
@Produces(Constants.MEDIA_TYPE_JSON)
public abstract class CompositeResource extends AbstractResource implements RestResource {
// All methods that expect a request body should include the annotation:
// @Consumes(CONSUMES_TYPE)
public static final String CONSUMES_TYPE = Constants.MEDIA_TYPE_JSON;
final protected static String DETACHED = "__detached";
final protected static String DETACHED_DEFAULT = "false";
final protected static String INCLUDE = "__includeFields";
final protected static String EXCLUDE = "__excludeFields";
// TODO: These should be configurable
protected static final int THREAD_POOL_CORE = 5;
protected static final int THREAD_POOL_MAX = 10;
protected CompositeUtil compositeUtil = CompositeUtil.instance();
public void setSubjectRef(Ref subjectRef) {
this.subjectRef = subjectRef;
}
public CompositeUtil getCompositeUtil() {
return compositeUtil;
}
/**
* This method creates a sub-resource of the specified type. Since the JAX-RS does not allow for injection into
* sub-resources (as it doesn't know or control the lifecycle of the object), this method performs a manual
* "injection" of the various system objects the resource might need. If the requested Class can not be instantiated
* (e.g., it does not have a no-arg public constructor), the system will throw a WebApplicationException
* with an HTTP status code of 500 (internal server error).
*
* @param clazz The Class of the desired sub-resource
* @return
*/
public T getSubResource(Class clazz) {
try {
T resource = clazz.newInstance();
CompositeResource cr = (CompositeResource)resource;
cr.locatorBridge = locatorBridge;
cr.subjectRef = subjectRef;
cr.uriInfo = uriInfo;
cr.securityContext = securityContext;
cr.requestHeaders = requestHeaders;
cr.serviceLocator = serviceLocator;
return resource;
} catch (Exception ex) {
throw new WebApplicationException(ex, Status.INTERNAL_SERVER_ERROR);
}
}
// Convenience methods for creating models
protected T newModel(Class modelIface) {
return getCompositeUtil().getModel(modelIface);
}
protected T newTemplate(Class modelIface) {
// We don't want any model trimming to happen on templates since the caller is supposed to
// get the template, modify it, then POST it back and since POST should be getting full entities.
T template = newModel(modelIface);
template.allFieldsSet();
return template;
}
protected T getTypedModel(Class modelIface, JSONObject jsonModel) throws Exception {
if (jsonModel == null) {
return null;
}
return CompositeUtil.instance().unmarshallClass(getLocale(), modelIface, jsonModel);
}
protected JSONObject getJsonModel(RestModel typedModel) throws Exception {
return (JSONObject)JsonUtil.getJsonObject(typedModel, false); // include confidential properties
}
// Convenience methods for constructing URIs
/**
* Every resource that returns a collection will need to return the URI for each item in the colleciton. This method
* handles the creation of that URI, ensuring a correct and consistent URI pattern.
* @param name
* @return
*/
protected URI getChildItemUri(String name) {
return getSubUri("id/" + name);
}
protected URI getUri(String path) {
return this.uriInfo.getBaseUriBuilder().path(path).build();
}
protected URI getSubUri(String name) {
return this.uriInfo.getAbsolutePathBuilder().path(name).build();
}
// Convenience methods for adding links
protected void addResourceLink(ResponseBody rb, String rel) throws Exception {
rb.addResourceLink(rel, getSubUri(rel));
}
protected void addActionResourceLink(ResponseBody rb, String action) throws Exception {
rb.addActionResourceLink(action, getSubUri(action));
}
protected boolean includeResourceLinks() {
final String hdr = requestHeaders.getRequestHeaders().getFirst("X-Skip-Metadata"); // X-Skip-Resource-Links
boolean skip = "true".equalsIgnoreCase(hdr);
return !skip;
}
// Convenience methods for computing a resource's parent uri
protected URI getParentUri() throws Exception {
return getParentUri(false);
}
protected URI getCollectionChildParentUri() throws Exception {
return getParentUri(true);
}
private URI getParentUri(boolean isCollectionChild) throws Exception {
List pathSegments = this.uriInfo.getPathSegments();
int count = pathSegments.size() - 1; // go up a level to get to the parent
if (isCollectionChild) {
count--; // collection children have the url pattern .../foos/id/myfoo. need to go up another level
}
// [0] = 'javaservice', which is a resource
if (count <= 0) {
return null; // top level resource
}
UriBuilder bldr = this.uriInfo.getBaseUriBuilder();
for (int i = 0; i < count; i++) {
bldr.path(pathSegments.get(i).getPath());
}
return bldr.build();
}
/**
* Execute a delete AdminCommand with no parameters.
* @param command
* @return
*/
protected ActionReporter executeDeleteCommand(String command) {
return getCompositeUtil().executeDeleteCommand(getSubject(), command);
}
/**
* Execute a delete AdminCommand with the specified parameters.
* @param command
* @param parameters
* @return
*/
protected ActionReporter executeDeleteCommand(String command, ParameterMap parameters) {
return getCompositeUtil().executeDeleteCommand(getSubject(), command, parameters);
}
/**
* Execute a delete AdminCommand with the specified parameters.
* @param command
* @param parameters
* @return
*/
protected ActionReporter executeDeleteCommandManaged(String command, ParameterMap parameters) {
return getCompositeUtil().executeDeleteCommandManaged(getSubject(), command, parameters);
}
/**
* Execute a writing AdminCommand with no parameters.
* @param command
* @return
*/
protected ActionReporter executeWriteCommand(String command) {
return getCompositeUtil().executeWriteCommand(getSubject(), command);
}
/**
* Execute a writing AdminCommand with the specified parameters.
* @param command
* @param parameters
* @return
*/
protected ActionReporter executeWriteCommand(String command, ParameterMap parameters) {
return getCompositeUtil().executeWriteCommand(getSubject(), command, parameters);
}
/**
* Execute a writing AdminCommand with the specified parameters.
* @param command
* @param parameters
* @return
*/
protected ActionReporter executeWriteCommandManaged(String command, ParameterMap parameters) {
return getCompositeUtil().executeWriteCommandManaged(getSubject(), command, parameters);
}
/**
* Execute a read-only AdminCommand with the specified parameters.
* @param command
* @param parameters
* @return
*/
protected ActionReporter executeReadCommand(String command) {
return getCompositeUtil().executeReadCommand(getSubject(), command);
}
/**
* Execute a read-only AdminCommand with no parameters.
* @param command
* @param parameters
* @return
*/
protected ActionReporter executeReadCommand(String command, ParameterMap parameters) {
return getCompositeUtil().executeReadCommand(getSubject(), command, parameters);
}
/**
* Execute an AdminCommand with the specified parameters.
* @param command
* @param parameters
* @param status
* @param includeFailureMessage
* @param throwOnWarning (vs.ignore warning)
* @return
*/
protected ActionReporter executeCommand(String command, ParameterMap parameters, Status status, boolean includeFailureMessage, boolean throwOnWarning) {
return getCompositeUtil().executeCommand(getSubject(), command, parameters, status, includeFailureMessage, throwOnWarning, false);
}
/**
* Execute an AdminCommand via SSE, but provide an ActionReportProcessor that allows
* the calling resource, via an EntityBuilder instance, to return a ResponseBody that
* extra information such as the newly create entity, as well as any messages returned by the subsystem.
*/
protected EventOutput executeSseCommand(final Subject subject, final String command,
final ParameterMap parameters,
final ResponseBodyBuilder builder) {
return getCompositeUtil().executeSseCommand(subject, command, parameters, new SseCommandHelper.ActionReportProcessor() {
@Override
public ActionReport process(ActionReport report, EventOutput ec) {
if (report != null) {
ResponseBody rb = builder.build(report);
Properties props = new Properties();
props.put("response", rb);
report.setExtraProperties(props);
}
return report;
}
});
}
/** Execute an AdminCommand with the specified parameters and
* return EventOutput suitable for SSE.
*/
protected EventOutput executeSseCommand(final Subject subject, final String command,
final ParameterMap parameters,
final SseCommandHelper.ActionReportProcessor processor) {
return getCompositeUtil().executeSseCommand(subject, command, parameters, processor);
}
/** Execute an AdminCommand with the specified parameters and
* return EventOutput suitable for SSE.
*/
protected EventOutput executeSseCommand(final Subject subject, final String command,
final ParameterMap parameters) {
return getCompositeUtil().executeSseCommand(subject, command, parameters);
}
/**
* TBD - Jason Lee wants to move this into the defaults generators.
*
* Finds an unused name given the list of currently used names and a name prefix.
*
* @param namePrefix
* @param usedNames
* @return a String containing an unused dname, or an empty string if all candidate names are currently in use.
*/
protected String generateDefaultName(String namePrefix, Collection usedNames) {
for (int i = 1; i <= 100; i++) {
String name = namePrefix + "-" + i;
if (!usedNames.contains(name)) {
return name;
}
}
// All the candidate names are in use. Return an empty name.
return "";
}
// Convenience methods for 'create' method responses
protected Response created(String name, String message) throws Exception {
return created(responseBody(), name, message);
}
protected Response created(ResponseBody rb, String name, String message) throws Exception {
rb.addSuccess(message);
return created(rb, name);
}
protected Response created(ResponseBody rb, String name) throws Exception {
return created(rb, getChildItemUri(name));
}
protected Response created(ResponseBody rb, URI uri) throws Exception {
return Response.created(uri).entity(rb).build();
}
// Convenience methods for 'update' method responses
protected Response updated(String message) {
return updated(responseBody(), message);
}
protected Response updated(ResponseBody rb, String message) {
rb.addSuccess(message);
return updated(rb);
}
protected Response updated(ResponseBody rb) {
return ok(rb);
}
// Convenience methods for 'delete' method responses
protected Response deleted(String message) {
return deleted(responseBody(), message);
}
protected Response deleted(ResponseBody rb, String message) {
rb.addSuccess(message);
return deleted(rb);
}
protected Response deleted(ResponseBody rb) {
return ok(rb);
}
// Convenience methods for 'action' method responses
protected Response acted(String message) {
return acted(responseBody(), message);
}
protected Response acted(ResponseBody rb, String message) {
rb.addSuccess(message);
return acted(rb);
}
protected Response acted(ResponseBody rb) {
return ok(rb);
}
// Convenience methods for detached method responses
protected Response accepted(String message, URI jobUri, URI newItemUri) {
return accepted(responseBody(), message, jobUri, newItemUri);
}
protected Response accepted(ResponseBody rb, String message, URI jobUri, URI newItemUri) {
rb.addSuccess(message);
return accepted(rb, jobUri, newItemUri);
}
protected Response accepted(ResponseBody rb, URI jobUri, URI newItemUri) {
ResponseBuilder bldr = Response.status(Status.ACCEPTED).entity(rb);
if (jobUri != null) {
bldr.header("Location", jobUri);
}
if (newItemUri != null) {
bldr.header("X-Location", newItemUri);
}
return bldr.build();
}
protected Response accepted(String command, ParameterMap parameters, URI childUri) {
return accepted(responseBody(), launchDetachedCommand(command, parameters), childUri);
}
protected URI launchDetachedCommand(String command, ParameterMap parameters) {
CommandRunner cr = Globals.getDefaultHabitat().getService(CommandRunner.class);
final RestActionReporter ar = new RestActionReporter();
final CommandRunner.CommandInvocation commandInvocation =
cr.getCommandInvocation(command, ar, getSubject()).
parameters(parameters);
final String jobId = DetachedCommandHelper.invokeAsync(commandInvocation);
return getUri("jobs/id/" + jobId);
}
protected Response ok(ResponseBody rb) {
return Response.ok(rb).build();
}
// Convenience methods for throwing common webapp exceptions
protected Response badRequest(ResponseBody rb, String message) {
rb.addFailure(message);
return badRequest(rb);
}
protected Response badRequest(ResponseBody rb) {
return Response.status(Status.BAD_REQUEST).entity(rb).build();
}
protected WebApplicationException badRequest(Throwable cause) {
return new WebApplicationException(cause, Status.BAD_REQUEST);
}
protected WebApplicationException badRequest(String message) {
return new WebApplicationException(Response.status(Status.BAD_REQUEST).entity(message).build());
}
protected WebApplicationException notFound(String message) {
return new WebApplicationException(Response.status(Status.NOT_FOUND).entity(message).build());
}
/*
protected void internalServerError(Exception e) {
ExceptionUtils.log(e);
}
*/
// Convenience methods for creating response bodies
protected RestCollectionResponseBody restCollectionResponseBody(Class modelIface, String collectionName, URI parentUri) {
RestCollectionResponseBody rb = restCollectionResponseBody(modelIface, collectionName);
rb.addParentResourceLink(parentUri);
return rb;
}
protected RestCollectionResponseBody restCollectionResponseBody(Class modelIface, String collectionName) {
return new RestCollectionResponseBody(includeResourceLinks(), this.uriInfo, collectionName);
}
protected RestModelResponseBody restModelResponseBody(Class modelIface, URI parentUri, T entity) {
RestModelResponseBody rb = restModelResponseBody(modelIface, parentUri);
rb.setEntity(entity);
return rb;
}
protected RestModelResponseBody restModelResponseBody(Class modelIface, URI parentUri) {
RestModelResponseBody rb = restModelResponseBody(modelIface);
rb.addParentResourceLink(parentUri);
return rb;
}
protected RestModelResponseBody restModelResponseBody(Class modelIface) {
return new RestModelResponseBody(includeResourceLinks());
}
protected ResponseBody responseBody() {
return new ResponseBody(includeResourceLinks());
}
// Convenience methods for creating responses from response bodies
protected Response getResponse(ResponseBody responseBody) {
return getResponse(Status.OK, responseBody);
}
protected Response getResponse(Status status, ResponseBody responseBody) {
return Response.status(status).entity(responseBody).build();
}
// Convenience methods to help filter returned data
protected JsonFilter getFilter(String include, String exclude) throws Exception {
return new JsonFilter(getLocale(), include, exclude);
}
protected JsonFilter getFilter(String include, String exclude, String identityAttr) throws Exception {
return new JsonFilter(getLocale(), include, exclude, identityAttr);
}
protected T filterModel(Class modelIface, T unfilteredModel, String include, String exclude) throws Exception {
return filterModel(modelIface, unfilteredModel, getFilter(include, exclude));
}
protected T filterModel(Class modelIface, T unfilteredModel, String include, String exclude, String identityAttr) throws Exception {
return filterModel(modelIface, unfilteredModel, getFilter(include, exclude, identityAttr));
}
protected T filterModel(Class modelIface, T unfilteredModel, JsonFilter filter) throws Exception {
JSONObject unfilteredJson = (JSONObject)JsonUtil.getJsonObject(unfilteredModel, false); // don't hide confidential properties
JSONObject filteredJson = filter.trim(unfilteredJson);
T filteredModel = getTypedModel(modelIface, filteredJson);
filteredModel.trimmed(); // TBD - remove once the conversion to the new REST style guide is completed
return filteredModel;
}
protected Locale getLocale() {
return CompositeUtil.instance().getLocale(requestHeaders);
}
/**
* Convenience method for getting a path parameter. Equivalent to uriInfo.getPathParameters().getFirst(name)
* @param name
* @return
*/
protected String getPathParam(String name) {
return this.uriInfo.getPathParameters().getFirst(name);
}
protected ParameterMap parameterMap() {
return Util.parameterMap();
}
protected synchronized ExecutorService getExecutorService() {
return ExecutorServiceHolder.INSTANCE;
}
private static class ExecutorServiceHolder {
private static ExecutorService INSTANCE = new ThreadPoolExecutor(
THREAD_POOL_CORE, // core thread pool size
THREAD_POOL_MAX, // maximum thread pool size
1, // time to wait before resizing pool
TimeUnit.MINUTES,
new ArrayBlockingQueue(THREAD_POOL_MAX, true),
new ThreadPoolExecutor.CallerRunsPolicy());
}
protected Response act(final CommandInvoker invoker, boolean detached) {
if (detached) {
return accepted(invoker.getCommand(), invoker.getParams(), null);
} else {
invoker.setResult(executeWriteCommand(invoker.getCommand(), invoker.getParams()).getExtraProperties());
return acted(invoker.getSuccessMessage());
}
}
protected Response actSse(final CommandInvoker invoker) {
final boolean includeResourceLinks = includeResourceLinks();
EventOutput eo = executeSseCommand(getSubject(), invoker.getCommand(), invoker.getParams(), new ResponseBodyBuilderImpl() {
@Override
protected ResponseBody success(ActionReport report) {
invoker.setResult(report.getExtraProperties());
SseResponseBody responseBody = new SseResponseBody();
responseBody.addSuccess(invoker.getSuccessMessage());
return responseBody;
}
@Override
protected boolean includeResourceLinks() {
return includeResourceLinks;
}
});
return Response.status(Status.ACCEPTED).entity(eo).build();
}
protected Response create(final CreateCommandInvoker invoker, boolean detached) throws Exception {
if (detached) {
final String newItemName = invoker.getNewItemName();
final URI newItemUri = StringUtil.notEmpty(newItemName) ? getChildItemUri(newItemName) : null;
return accepted(invoker.getCommand(), invoker.getParams(), newItemUri);
} else {
invoker.setResult(executeWriteCommand(invoker.getCommand(), invoker.getParams()).getExtraProperties());
return created(invoker.getNewItemName(), invoker.getSuccessMessage());
}
}
protected Response createSse(final CreateCommandInvoker invoker) throws Exception {
final String collectionUri = uriInfo.getAbsolutePathBuilder().build().toString();
final boolean includeResourceLinks = includeResourceLinks();
EventOutput eo = executeSseCommand(getSubject(), invoker.getCommand(), invoker.getParams(), new ResponseBodyBuilderImpl() {
@Override
protected ResponseBody success(ActionReport report) {
invoker.setResult(report.getExtraProperties());
SseResponseBody responseBody = new SseResponseBody();
responseBody.addHeader("Location", collectionUri + "/id/" + invoker.getNewItemName())
.addSuccess(invoker.getSuccessMessage());
return responseBody;
}
@Override
protected boolean includeResourceLinks() {
return includeResourceLinks;
}
});
return Response.status(Status.ACCEPTED).entity(eo).build();
}
public class CommandInvoker {
public CommandInvoker() {}
public CommandInvoker(String command, ParameterMap params, String successMessage) {
setCommand(command);
setParams(params);
setSuccessMessage(successMessage);
}
private String command;
public void setCommand(String val) { this.command = val; }
public String getCommand() { return this.command; }
private ParameterMap params;
public void setParams(ParameterMap val) { this.params = val; }
public ParameterMap getParams() { return this.params; }
private String successMsg;
public void setSuccessMessage(String val) { this.successMsg = val; }
public String getSuccessMessage() { return this.successMsg; }
public void setResult(Properties extraProperties) {}
}
public class CreateCommandInvoker extends CommandInvoker {
public CreateCommandInvoker() { super(); }
public CreateCommandInvoker(String command, ParameterMap params, String successMessage, String newItemName) {
super(command, params, successMessage);
setNewItemName(newItemName);
}
private String newItemName;
public void setNewItemName(String val) { this.newItemName = val; }
public String getNewItemName() { return this.newItemName; }
}
}
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