src/java.management.rest/share/classes/com/oracle/jmx/remote/rest/http/MBeanResource.java
package com.oracle.jmx.remote.rest.http;
import com.oracle.jmx.remote.rest.json.JSONArray;
import com.oracle.jmx.remote.rest.json.JSONElement;
import com.oracle.jmx.remote.rest.json.JSONObject;
import com.oracle.jmx.remote.rest.json.JSONPrimitive;
import com.oracle.jmx.remote.rest.json.parser.JSONParser;
import com.oracle.jmx.remote.rest.json.parser.ParseException;
import com.oracle.jmx.remote.rest.mapper.JSONDataException;
import com.oracle.jmx.remote.rest.mapper.JSONMapper;
import com.oracle.jmx.remote.rest.mapper.JSONMappingException;
import com.oracle.jmx.remote.rest.mapper.JSONMappingFactory;
import com.sun.net.httpserver.HttpExchange;
import javax.management.*;
import javax.management.openmbean.OpenMBeanAttributeInfo;
import javax.management.openmbean.OpenMBeanParameterInfo;
import javax.management.openmbean.OpenType;
import javax.management.remote.rest.PlatformRestAdapter;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static javax.management.MBeanOperationInfo.*;
public class MBeanResource implements RestResource {
private final ObjectName objectName;
private final MBeanServer mBeanServer;
private static final String pathPrefix = "^/?jmx/servers/[^/]+/mbeans/[^/]+";
private final static Map<String, Class<?>> primitiveToObject = new HashMap<>();
static {
primitiveToObject.put("int", Integer.TYPE);
primitiveToObject.put("long", Long.TYPE);
primitiveToObject.put("double", Double.TYPE);
primitiveToObject.put("float", Float.TYPE);
primitiveToObject.put("boolean", Boolean.TYPE);
primitiveToObject.put("char", Character.TYPE);
primitiveToObject.put("byte", Byte.TYPE);
primitiveToObject.put("void", Void.TYPE);
primitiveToObject.put("short", Short.TYPE);
}
public MBeanResource(MBeanServer mBeanServer, ObjectName objectName) {
this.mBeanServer = mBeanServer;
this.objectName = objectName;
}
private JSONObject getMBeanInfo(MBeanServer mbeanServer, ObjectName mbean) throws InstanceNotFoundException, IntrospectionException, ReflectionException {
JSONObject jobj = new JSONObject();
MBeanInfo mBeanInfo = mbeanServer.getMBeanInfo(mbean);
if (mBeanInfo == null) {
return jobj;
}
jobj.put("description", mBeanInfo.getDescription());
// Populate Attribute Info
MBeanAttributeInfo[] attributes = mBeanInfo.getAttributes();
JSONArray jarr = new JSONArray();
for (MBeanAttributeInfo attr : attributes) {
String access;
if (attr.isReadable()) {
if (attr.isWritable()) {
access = "read/write";
} else {
access = "read-only";
}
} else if (attr.isWritable()) {
access = "write-only";
} else {
access = "no-access";
}
JSONObject jobj1 = new JSONObject();
jobj1.put("name", attr.getName());
jobj1.put("type", attr.getType());
jobj1.put("access", access);
jobj1.put("description", attr.getDescription());
jobj1.put("descriptor", getDescriptorJSON(attr.getDescriptor()));
jarr.add(jobj1);
}
jobj.put("attributeInfo", jarr);
// Add constructor Info
MBeanConstructorInfo[] constructorInfo = mBeanInfo.getConstructors();
jarr = new JSONArray();
for (MBeanConstructorInfo constructor : constructorInfo) {
JSONObject jobj1 = new JSONObject();
jobj1.put("name", constructor.getName());
JSONArray jarr1 = new JSONArray();
for (MBeanParameterInfo paramInfo : constructor.getSignature()) {
jarr1.add(getParamJSON(paramInfo));
}
jobj1.put("signature", jarr1);
jobj1.put("description", constructor.getDescription());
if (constructor.getDescriptor().getFieldNames().length > 1) {
jobj1.put("descriptor", getDescriptorJSON(constructor.getDescriptor()));
}
jarr.add(jobj1);
}
jobj.put("constructorInfo", jarr);
MBeanOperationInfo[] opInfo = mBeanInfo.getOperations();
jarr = new JSONArray();
for (MBeanOperationInfo op : opInfo) {
String impactString;
switch (op.getImpact()) {
case ACTION:
impactString = "action";
break;
case ACTION_INFO:
impactString = "action/info";
break;
case INFO:
impactString = "info";
break;
case UNKNOWN:
impactString = "unknown";
break;
default:
impactString = "(" + op.getImpact() + ")";
}
JSONObject jobj1 = new JSONObject();
jobj1.put("name", op.getName());
JSONArray jarr1 = new JSONArray();
for (MBeanParameterInfo paramInfo : op.getSignature()) {
jarr1.add(getParamJSON(paramInfo));
}
jobj1.put("signature", jarr1);
jobj1.put("returnType", op.getReturnType());
jobj1.put("impact", impactString);
jobj1.put("description", op.getDescription());
if (op.getDescriptor().getFieldNames().length > 1) {
jobj1.put("descriptor", getDescriptorJSON(op.getDescriptor()));
}
jarr.add(jobj1);
}
jobj.put("operationInfo", jarr);
MBeanNotificationInfo[] notifications = mBeanInfo.getNotifications();
jarr = new JSONArray();
for (MBeanNotificationInfo notification : notifications) {
JSONObject jobj1 = new JSONObject();
jobj1.put("name", notification.getName());
JSONArray jarr1 = new JSONArray();
for (String notifType : notification.getNotifTypes()) {
jarr1.add(new JSONPrimitive(notifType));
}
jobj1.put("notifTypes", jarr1);
jobj1.put("description", notification.getDescription());
if (notification.getDescriptor().getFieldNames().length > 1) {
jobj1.put("descriptor", getDescriptorJSON(notification.getDescriptor()));
}
jarr.add(jobj1);
}
jobj.put("notificationInfo", jarr);
jobj.put("descriptor", getDescriptorJSON(mBeanInfo.getDescriptor()));
return jobj;
}
private JSONObject getParamJSON(MBeanParameterInfo mParamInfo) {
JSONObject jobj1 = new JSONObject();
if (mParamInfo.getDescription() != null && !mParamInfo.getDescription().isEmpty()) {
jobj1.put("description", mParamInfo.getDescription());
}
jobj1.put("name", mParamInfo.getName());
jobj1.put("type", mParamInfo.getType());
if (mParamInfo.getDescriptor() != null && mParamInfo.getDescriptor().getFieldNames().length > 1) {
jobj1.put("descriptor", getDescriptorJSON(mParamInfo.getDescriptor()));
}
return jobj1;
}
private JSONObject getDescriptorJSON(Descriptor descriptor) {
JSONObject jobj2 = new JSONObject();
try {
String[] descNames = descriptor.getFieldNames();
for (String descName : descNames) {
Object fieldValue = descriptor.getFieldValue(descName);
jobj2.put(descName, fieldValue != null ? fieldValue.toString() : null);
}
} catch (Throwable t) {
t.printStackTrace();
}
return jobj2;
}
private Map<String, Object> getAttributes(String[] attrs) throws InstanceNotFoundException,
ReflectionException {
Map<String, Object> result = new LinkedHashMap<>();
if (attrs == null || attrs.length == 0) {
return result;
}
AttributeList attrVals = mBeanServer.getAttributes(objectName, attrs);
if (attrVals.size() != attrs.length) {
List<String> missingAttrs = new ArrayList<>(Arrays.asList(attrs));
for (Attribute a : attrVals.asList()) {
missingAttrs.remove(a.getName());
result.put(a.getName(), a.getValue());
}
for (String attr : missingAttrs) {
result.put(attr, "< Error: No such attribute >");
}
} else {
attrVals.asList().forEach((a) -> result.put(a.getName(), a.getValue()));
}
return result;
}
private Map<String, Object> getAllAttributes() throws IntrospectionException,
InstanceNotFoundException, ReflectionException, AttributeNotFoundException, MBeanException {
Map<String, Object> result = new HashMap<>();
MBeanInfo mInfo = mBeanServer.getMBeanInfo(objectName);
String[] attrs = Arrays.stream(mInfo.getAttributes())
.map(MBeanAttributeInfo::getName)
.toArray(String[]::new);
AttributeList attrVals = mBeanServer.getAttributes(objectName, attrs);
if (attrVals.size() != attrs.length) {
List<String> missingAttrs = new ArrayList<>(Arrays.asList(attrs));
for (Attribute a : attrVals.asList()) {
missingAttrs.remove(a.getName());
result.put(a.getName(), a.getValue());
}
for (String attr : missingAttrs) {
try {
Object attribute = mBeanServer.getAttribute(objectName, attr);
} catch (RuntimeException ex) {
if (ex.getCause() instanceof UnsupportedOperationException) {
result.put(attr, "< Attribute not supported >");
} else if (ex.getCause() instanceof IllegalArgumentException) {
result.put(attr, "< Invalid attributes >");
}
continue;
}
result.put(attr, "< Error: No such attribute >");
}
} else {
attrVals.asList().forEach((a) -> {
result.put(a.getName(), a.getValue());
});
}
return result;
}
private Map<String, Object> setAttributes(JSONObject attrMap) throws JSONDataException,
IntrospectionException, InstanceNotFoundException, ReflectionException {
if (attrMap == null || attrMap.isEmpty()) {
throw new JSONDataException("Null arguments for set attribute");
}
Map<String, Object> result = new HashMap<>();
for (String attrName : attrMap.keySet()) {
MBeanInfo mBeanInfo = mBeanServer.getMBeanInfo(objectName);
MBeanAttributeInfo attrInfo = Arrays.stream(mBeanInfo.getAttributes()).filter(a -> a.getName().equals(attrName)).findFirst().orElse(null);
if (attrInfo == null) {
result.put(attrName, "<Attribute not found>");
} else if (!attrInfo.isWritable()) {
result.put(attrName, "<Attribute is read-only>");
} else {
JSONMapper mapper;
if (attrInfo instanceof OpenMBeanAttributeInfo) {
OpenType<?> type = ((OpenMBeanAttributeInfo) attrInfo).getOpenType();
mapper = JSONMappingFactory.INSTANCE.getTypeMapper(type);
} else {
Class<?> inputCls = primitiveToObject.get(attrInfo.getType());
try {
if (inputCls == null) {
inputCls = Class.forName(attrInfo.getType());
}
} catch (ClassNotFoundException | ClassCastException ex) {
throw new IllegalArgumentException("Invalid parameters : " + attrMap.get(attrName).toJsonString() + " cannot be mapped to : " + attrInfo.getType());
}
mapper = JSONMappingFactory.INSTANCE.getTypeMapper(inputCls);
}
try {
Object attrValue = mapper.toJavaObject(attrMap.get(attrName));
Attribute attrObj = new Attribute(attrName, attrValue);
mBeanServer.setAttribute(objectName, attrObj);
result.put(attrName, "success");
} catch (InvalidAttributeValueException | JSONDataException e) {
result.put(attrName, "<Invalid value for the attribute>");
} catch (AttributeNotFoundException e) {
result.put(attrName, "<Attribute not found>");
} catch (ReflectionException | InstanceNotFoundException | MBeanException e) {
result.put(attrName, "<ERROR: Unable to retrieve value>");
}
}
}
return result;
}
private Object mapJsonToType(JSONElement jsonElement, MBeanParameterInfo type) {
if (type instanceof OpenMBeanParameterInfo) {
OpenType<?> openType = ((OpenMBeanParameterInfo) type).getOpenType();
JSONMapper typeMapper = JSONMappingFactory.INSTANCE.getTypeMapper(openType);
try {
return typeMapper.toJavaObject(jsonElement);
} catch (JSONDataException ex) {
throw new IllegalArgumentException("Invalid JSON String : " + jsonElement.toJsonString() + " for arguments");
}
} else {
Class<?> inputCls = primitiveToObject.get(type.getType());
try {
if (inputCls == null) {
inputCls = Class.forName(type.getType());
}
} catch (ClassNotFoundException | ClassCastException ex) {
throw new IllegalArgumentException("Invalid parameters : " + jsonElement.toJsonString() + " cannot be mapped to : " + type.getType());
}
JSONMapper typeMapper = JSONMappingFactory.INSTANCE.getTypeMapper(inputCls);
if (typeMapper == null) {
throw new IllegalArgumentException("Invalid parameters : " + jsonElement.toJsonString() + " cannot be mapped to : " + type.getType());
}
try {
return typeMapper.toJavaObject(jsonElement);
} catch (JSONDataException ex) {
throw new IllegalArgumentException("Invalid JSON String : " + jsonElement.toJsonString() + " for arguments");
}
}
}
private Map<String, Object> getParameters(Map<String, JSONElement> jsonValues, Map<String, MBeanParameterInfo> typeMap) {
if (jsonValues.size() != typeMap.size()) {
throw new IllegalArgumentException("Invalid parameters : expected - " + typeMap.size() + " parameters, got - " + jsonValues.size());
}
if (!jsonValues.keySet().equals(typeMap.keySet())) {
throw new IllegalArgumentException("Invalid parameters - expected : " + Arrays.toString(typeMap.keySet().toArray()));
}
Map<String, Object> parameters = new LinkedHashMap<>();
if (typeMap.size() == 0 && jsonValues.isEmpty()) {
return parameters;
}
for (String name : typeMap.keySet()) {
MBeanParameterInfo type = typeMap.get(name);
JSONElement jsonVal = jsonValues.get(name);
Object obj = mapJsonToType(jsonVal, type);
parameters.put(name, obj);
}
return parameters;
}
private JSONElement execOperation(String opstr, JSONObject params)
throws MBeanException, IntrospectionException, ReflectionException, InstanceNotFoundException {
if (params == null) {
params = new JSONObject();
}
MBeanInfo mBeanInfo;
try {
mBeanInfo = mBeanServer.getMBeanInfo(objectName);
} catch (InstanceNotFoundException ex) {
throw new IllegalArgumentException("MBean does not exist");
}
MBeanOperationInfo[] opinfos = Arrays.stream(mBeanInfo.getOperations()).
filter(a -> a.getName().equals(opstr)).toArray(MBeanOperationInfo[]::new);
if (opinfos.length == 0) {
throw new IllegalArgumentException("Invalid Operation String");
}
String[] signature = null;
Object[] parameters = null;
if (opinfos.length == 1) {
MBeanParameterInfo[] sig = opinfos[0].getSignature();
Map<String, MBeanParameterInfo> typeMap = new LinkedHashMap<>();
Arrays.stream(sig).forEach(e -> typeMap.put(e.getName(), e));
parameters = getParameters(params, typeMap).values().toArray();
signature = Arrays.asList(sig).stream().map(a -> a.getType()).toArray(a -> new String[a]);
} else if (opinfos.length > 1) {
IllegalArgumentException exception = null;
for (MBeanOperationInfo opInfo : opinfos) {
MBeanParameterInfo[] sig = opInfo.getSignature();
try {
Map<String, MBeanParameterInfo> typeMap = new LinkedHashMap<>();
Arrays.stream(sig).forEach(e -> typeMap.put(e.getName(), e));
parameters = getParameters(params, typeMap).values().toArray();
signature = Arrays.asList(sig).stream().map(a -> a.getType()).toArray(a -> new String[a]);
exception = null;
break;
} catch (IllegalArgumentException ex) {
exception = ex;
}
}
if (exception != null) {
throw exception;
}
}
Object invoke = null;
try {
invoke = mBeanServer.invoke(objectName, opstr, parameters, signature);
if (invoke != null) {
JSONMapper typeMapper = JSONMappingFactory.INSTANCE.getTypeMapper(invoke);
if (typeMapper != null) {
return typeMapper.toJsonValue(invoke);
} else {
return new JSONPrimitive("<Unable to map result to JSON>");
}
} else {
return new JSONPrimitive("void");
}
} catch (JSONMappingException e) {
return new JSONPrimitive("<Unable to map result to JSON>");
}
}
private HttpResponse doMBeanInfo(HttpExchange exchange) {
try {
JSONObject mBeanInfo = getMBeanInfo(mBeanServer, objectName);
return new HttpResponse(200, mBeanInfo.toJsonString());
} catch (RuntimeOperationsException | IntrospectionException | ReflectionException e) {
return new HttpResponse(HttpResponse.SERVER_ERROR, HttpResponse.getErrorMessage(e));
} catch (InstanceNotFoundException e) {
return new HttpResponse(HttpResponse.BAD_REQUEST, "Specified MBean does not exist");
} catch (Exception e) {
return new HttpResponse(HttpResponse.SERVER_ERROR, HttpResponse.getErrorMessage(e));
}
}
@Override
public void handle(HttpExchange exchange) throws IOException {
String path = exchange.getRequestURI().getPath();
if (path.matches(pathPrefix + "/?$")) {
RestResource.super.handle(exchange);
} else if (path.matches(pathPrefix + "/info$") && exchange.getRequestMethod().equalsIgnoreCase("GET")) {
RestResource.super.handle(exchange);
} else if (path.matches(pathPrefix + "/[^/]+/?$") && exchange.getRequestMethod().equalsIgnoreCase("POST")) {
RestResource.super.handle(exchange);
} else {
HttpUtil.sendResponse(exchange, new HttpResponse(404, "Not found"));
}
}
@Override
public HttpResponse doGet(HttpExchange exchange) {
if (exchange.getRequestURI().getPath().endsWith("info")) {
return doMBeanInfo(exchange);
}
String path = PlatformRestAdapter.getAuthority() + exchange.getRequestURI().getPath().replaceAll("\\/$", "");
String info = path + "/info";
try {
Map<String, Object> allAttributes = getAllAttributes();
Map<String, String> _links = new LinkedHashMap<>();
_links.put("info", HttpUtil.escapeUrl(info));
MBeanOperationInfo[] opInfo = mBeanServer.getMBeanInfo(objectName).getOperations();
JSONArray jarr = new JSONArray();
for (MBeanOperationInfo op : opInfo) {
JSONObject jobj1 = new JSONObject();
JSONArray jarr1 = new JSONArray();
jobj1.put("name", op.getName());
jobj1.put("href", HttpUtil.escapeUrl(path + "/" + op.getName()));
jobj1.put("method", "POST");
for (MBeanParameterInfo paramInfo : op.getSignature()) {
JSONObject jobj = new JSONObject();
jobj.put("name", paramInfo.getName());
jobj.put("type", paramInfo.getType());
jarr1.add(jobj);
}
jobj1.put("arguments", jarr1);
jobj1.put("returnType", op.getReturnType());
jarr.add(jobj1);
}
JSONMapper typeMapper = JSONMappingFactory.INSTANCE.getTypeMapper(allAttributes);
if (typeMapper != null) {
JSONElement jsonElement1 = typeMapper.toJsonValue(allAttributes);
JSONElement jsonElement2 = typeMapper.toJsonValue(_links);
JSONObject jobj = new JSONObject();
jobj.put("attributes", jsonElement1);
jobj.put("operations", jarr);
jobj.put("_links", jsonElement2);
return new HttpResponse(200, jobj.toJsonString());
} else {
return new HttpResponse(HttpResponse.SERVER_ERROR, "Unable to find JSONMapper");
}
} catch (RuntimeOperationsException | IntrospectionException | ReflectionException | JSONMappingException e) {
return new HttpResponse(HttpResponse.SERVER_ERROR, HttpResponse.getErrorMessage(e));
} catch (InstanceNotFoundException e) {
return new HttpResponse(HttpResponse.BAD_REQUEST, "Specified MBean does not exist");
} catch (AttributeNotFoundException e) {
return new HttpResponse(HttpResponse.BAD_REQUEST, "Specified Attribute does not exist");
} catch (MBeanException e) {
Throwable cause = e.getCause();
return new HttpResponse(HttpResponse.SERVER_ERROR, HttpResponse.getErrorMessage(e));
} catch (Exception e) {
return new HttpResponse(HttpResponse.SERVER_ERROR, HttpResponse.getErrorMessage(e));
}
}
/*
HTTP POST for this MBean's URL allows setting of attributes and execution of operations.
POST request body can follow one of the below formats
1. { name : value}
Set a single attribute
2. { name1 : value1, name2 : value2 }
Sets multiple attributes
3. {attributes : {read : [name]} , {write : {name : value}}, operations : {op_name : {param_name:name, param_value:value}}}
This bulk operation request sets multiple attributes and executes multiple
operations on the MBean.
*/
@Override
public HttpResponse doPost(HttpExchange exchange) {
String path = exchange.getRequestURI().getPath();
String reqBody = null;
try {
if (path.matches(pathPrefix + "/?$")) { // POST to current URL
reqBody = HttpUtil.readRequestBody(exchange);
if (reqBody == null || reqBody.isEmpty()) { // No Parameters
return HttpResponse.BAD_REQUEST;
}
JSONParser parser = new JSONParser(reqBody);
JSONElement jsonElement = parser.parse();
if (!(jsonElement instanceof JSONObject)) {
return new HttpResponse(HttpResponse.BAD_REQUEST,
"Invalid parameters : [" + reqBody + "]");
}
JSONObject jsonObject = (JSONObject) jsonElement;
if (jsonObject.keySet().contains("attributes") | jsonObject.keySet().contains("operations")) {
return new HttpResponse(HttpURLConnection.HTTP_OK, handleBulkRequest(exchange, jsonObject).toJsonString());
} else {
Map<String, Object> stringObjectMap = setAttributes(jsonObject);
JSONMapper typeMapper = JSONMappingFactory.INSTANCE.getTypeMapper(stringObjectMap);
if (typeMapper != null) {
return new HttpResponse(HttpURLConnection.HTTP_OK, typeMapper.toJsonValue(stringObjectMap).toJsonString());
} else {
return new HttpResponse(HttpResponse.SERVER_ERROR, "Unable to find JSON Mapper");
}
}
} else if (path.matches(pathPrefix + "/[^/]+/?$")) { // POST to MBeanOperation
Matcher matcher = Pattern.compile(pathPrefix + "/").matcher(path);
String operation;
if (matcher.find()) {
String ss = path.substring(matcher.end());
operation = ss;
} else {
return HttpResponse.BAD_REQUEST;
}
reqBody = HttpUtil.readRequestBody(exchange);
JSONElement result;
if (reqBody == null || reqBody.isEmpty()) { // No Parameters
result = execOperation(operation, null);
} else {
JSONParser parser = new JSONParser(reqBody);
JSONElement jsonElement = parser.parse();
if (!(jsonElement instanceof JSONObject)) {
return new HttpResponse(HttpResponse.BAD_REQUEST,
"Invalid parameters : [" + reqBody + "] for operation - " + operation);
}
result = execOperation(operation, (JSONObject) jsonElement);
}
return new HttpResponse(HttpURLConnection.HTTP_OK, result.toJsonString());
} else {
return HttpResponse.REQUEST_NOT_FOUND;
}
} catch (InstanceNotFoundException e) {
// Should never happen
} catch (JSONDataException | ParseException e) {
return new HttpResponse(HttpURLConnection.HTTP_BAD_REQUEST, "Invalid JSON : " + reqBody, e.getMessage());
} catch (IntrospectionException | JSONMappingException | MBeanException | ReflectionException | IOException e) {
return new HttpResponse(HttpResponse.SERVER_ERROR, HttpResponse.getErrorMessage(e));
} catch (IllegalArgumentException e) {
return new HttpResponse(HttpResponse.BAD_REQUEST, e.getMessage());
} catch (Exception e) {
return new HttpResponse(HttpResponse.SERVER_ERROR, HttpResponse.getErrorMessage(e));
}
return HttpResponse.REQUEST_NOT_FOUND;
}
public JSONElement handleBulkRequest(HttpExchange exchange, JSONObject reqObject) {
JSONObject result = new JSONObject();
// Handle attributes
JSONElement element = reqObject.get("attributes");
if (element != null && element instanceof JSONObject) {
JSONObject attrInfo = (JSONObject) element;
JSONObject attrNode = new JSONObject();
// Read attributes
JSONElement read = attrInfo.get("get");
if (read != null && read instanceof JSONArray) {
JSONArray jattrs = (JSONArray) read;
JSONElement jAttrRead;
Map<String, Object> attrRead = null;
try {
String[] attributes = getStrings(jattrs);
attrRead = getAttributes(attributes);
JSONMapper typeMapper = JSONMappingFactory.INSTANCE.getTypeMapper(attrRead);
jAttrRead = typeMapper.toJsonValue(attrRead);
} catch (InstanceNotFoundException | ReflectionException | JSONMappingException e) {
jAttrRead = new JSONPrimitive("<ERROR: Unable to retrieve value>");
} catch (JSONDataException e) {
jAttrRead = new JSONPrimitive("Invalid JSON : " + read.toJsonString());
}
attrNode.put("get", jAttrRead);
}
// Write attributes
JSONElement write = attrInfo.get("set");
JSONElement jAttrRead;
if (write != null && write instanceof JSONObject) {
JSONObject jattrs = (JSONObject) write;
try {
Map<String, Object> attrMap = setAttributes(jattrs);
JSONMapper typeMapper = JSONMappingFactory.INSTANCE.getTypeMapper(attrMap);
jAttrRead = typeMapper.toJsonValue(attrMap);
} catch (JSONDataException ex) {
jAttrRead = new JSONPrimitive("Invalid JSON : " + write.toJsonString());
} catch (JSONMappingException | IntrospectionException | InstanceNotFoundException | ReflectionException e) {
jAttrRead = new JSONPrimitive("<ERROR: Unable to retrieve value>");
}
attrNode.put("set", jAttrRead);
}
result.put("attributes", attrNode);
}
// Execute operations
element = reqObject.get("operations");
if (element != null) {
JSONArray operationList;
if (element instanceof JSONPrimitive // Single no-arg operation
|| element instanceof JSONObject) { // single/mulitple operations
operationList = new JSONArray();
operationList.add(element);
} else if (element instanceof JSONArray) { // List of no-arg/with-arg operation
operationList = (JSONArray) element;
} else {
operationList = new JSONArray();
}
JSONObject opResult = new JSONObject();
for (JSONElement elem : operationList) {
if (elem instanceof JSONPrimitive
&& ((JSONPrimitive) elem).getValue() instanceof String) { // no-arg operation
String opName = (String) ((JSONPrimitive) elem).getValue();
try {
JSONElement obj = execOperation(opName, null);
opResult.put(opName, obj);
} catch (IllegalArgumentException e) {
opResult.put(opName, e.getMessage());
} catch (IntrospectionException | InstanceNotFoundException | MBeanException | ReflectionException e) {
opResult.put(opName, "<ERROR while executing operation>");
}
} else if (elem instanceof JSONObject) {
Set<String> opNames = ((JSONObject) element).keySet();
for (String opName : opNames) {
try {
JSONElement obj = execOperation(opName, (JSONObject) ((JSONObject) element).get(opName));
opResult.put(opName, obj);
} catch (IllegalArgumentException e) {
opResult.put(opName, e.getMessage());
} catch (IntrospectionException | InstanceNotFoundException | MBeanException | ReflectionException e) {
opResult.put(opName, "<ERROR while executing operation>");
}
}
}
}
result.put("operations", opResult);
}
return result;
}
private String[] getStrings(JSONArray jsonArray) throws JSONDataException {
List<String> attributes = new ArrayList<>();
for (JSONElement element : jsonArray) {
if (element instanceof JSONPrimitive && ((JSONPrimitive) element).getValue() instanceof String) {
JSONPrimitive val = (JSONPrimitive) element;
attributes.add((String) val.getValue());
} else throw new JSONDataException("Expecting String, got " + element.toJsonString());
}
return attributes.toArray(new String[0]);
}
@Override
public HttpResponse doPut(HttpExchange exchange) {
return null;
}
@Override
public HttpResponse doDelete(HttpExchange exchange) {
return null;
}
@Override
public HttpResponse doHead(HttpExchange exchange) {
return null;
}
}