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    package com.jelastic.api;

import org.json.JSONException;
import org.json.JSONObject;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.net.URL;
import java.security.*;
import java.security.cert.Certificate;
import java.util.Iterator;

/**
 * @author Ruslan Sinitskiy
 */
public class Response implements ResponseInterface {

    public static final int OK = 0;
    public static final int SERVICE_NOT_AVAILABLE = 1;
    public static final int ACCESS_DENIED = 2;
    public static final int INVALID_PARAM = 3;
    public static final int ABORT = 4;
    public static final int SERVICE_NOT_FOUND = 5;
    public static final int METHOD_NOT_FOUND = 6;
    public static final int NOT_AUTHENTICATED = 7;
    public static final int PERMISSION_DENIED = 8;
    public static final int OPERATION_NOT_ALLOWED = 9;
    public static final int APPLICATION_IS_BLOCKED = 10;
    public static final int APPLICATION_NOT_EXIST = 11;
    public static final int INVALID_CHECKSUM = 12;
    public static final int SYSTEM_ERROR = 13;
    public static final int APPLICATION_NOT_PRESENT_IN_CLUSTER_NODE = 14;
    public static final int SYSTEM_APPLICATION_IS_NOT_PERMITTED = 15;
    public static final int APPLICATION_NOT_LOADED = 16;
    public static final int INVALID_PARAM_NOTICE = 22;

    public static final int IO_ERROR = 17;
    public static final int DEPRECATED = 18;
    public static final int EXEC_TIMEOUT = 19;
    public static final int ERROR_UNKNOWN = 99;
    public static final int ERROR_STORAGE_RESPONSE = 301;
    public static final int ERROR_STORAGE_CONNECTION = 302;
    public static final int ERROR_STORAGE_IO = 303;
    public static final int ERROR_STORAGE_UNAVAILABLE = 304;
    public static final int ERROR_STORAGE_REQUEST = 305;
    public static final int ERROR_FILE_MAX_SIZE = 401;
    public static final int ERROR_FILE_NOT_ALLOWED = 402;
    public static final int ERROR_FILE_NOT_SPECIFIED = 403;
    public static final int EMAIL_INVALID_FORMAT = 501;
    public static final int EMAIL_IS_REGISTERED = 502;
    public static final int EMAIL_NOT_EXIST = 503;
    public static final int PASSWORD_INVALID_FORMAT = 504;
    public static final int INVALID_TOKEN = 505;
    public static final int EMAIL_NOT_REGISTERED = 506;
    public static final int VALUE_IS_TOO_LONG = 507;
    public static final int ERROR_EMAIL_TRANSPORT = 601;
    public static final int AUTHENTICATION_FAILED = 701;
    public static final int USER_NOT_AUTHENTICATED = 702;
    public static final int USER_NOT_EXIST = 703;
    public static final int USER_IS_BLOCKED = 704;
    public static final int USER_ACCESS_DENIED = 705;
    public static final int USER_ALREADY_ACTIVATED = 706;
    public static final int USER_ID_NOT_EXIT = 707;
    public static final int USER_NOT_ACTIVATED = 708;
    public static final int USER_PASSWORD_DOES_NOT_MATCH = 709;
    public static final int USER_ALREADY_RELATED = 710;
    public static final int USER_NOT_RELATED = 711;
    public static final int PASSWORD_INVALID = 801;
    public static final int TARGET_APPLICATION_NOT_EXIST = 901;
    public static final int APPLICATION_FIELD_NOT_EXIST = 902;
    public static final int APPLICATION_RIGHTS_NOT_EXIST = 903;
    public static final int QUOTA_APPLICATIONS_COUNT_MAX = 904;
    public static final int APPLICATIONS_POOL_IS_EXIST = 905;
    public static final int APPLICATIONS_POOL_NOT_EXIST = 906;
    public static final int APPLICATION_CONFIG_FORMAT_ERROR = 907;
    public static final int APPLICATION_EXPORT_DB_SIZE_LIMIT = 908;
    public static final int APPLICATION_EXPORT_DB_UPLOAD_ERROR = 909;
    public static final int APPLICATION_EXPORT_RESOURCES_UPLOAD_ERROR = 910;
    public static final int APPLICATION_IMPORT_DB_ARCHIVE_ERROR = 911;
    public static final int APPLICATION_EXPORT_RESOURCES_SIZE_LIMIT = 912;
    public static final int SOLUTION_ALREADY_EXIST = 913;
    public static final int SOLUTION_NOT_EXIST = 914;
    public static final int SOLUTION_FIELD_NOT_EXIST = 915;
    public static final int SOLUTION_NOT_CLONABLE = 916;
    public static final int APPLICATION_ALREADY_EXIST = 917;
    public static final int APPLICATION_WRONG_TRANSFER_STATE = 918;
    public static final int TYPE_NAME_INVALID = 1001;
    public static final int TYPE_IS_EXIST = 1002;
    public static final int TYPE_NOT_EXIST = 1003;
    public static final int TYPE_NOT_DEFINED = 1004;
    public static final int FIELD_IS_EXIST = 1005;
    public static final int FIELD_NOT_EXIST = 1006;
    public static final int FIELD_NAME_INVALID = 1007;
    public static final int FIELD_NAME_IS_RESERVED = 1008;
    public static final int UNIQUE_FORMAT_INVALID = 1009;
    public static final int TYPE_IS_RESERVED = 1010;
    public static final int QUOTA_TYPES_COUNT_MAX = 1011;
    public static final int QUOTA_FIELDS_COUNT_MAX = 1012;
    public static final int TYPE_LENGTH_MAX = 1013;
    //public static final int TYPE_CANNOT_CONTAIN_HIMSELF = 1014;
    public static final int OBJECT_NOT_EXIST = 1101;
    public static final int OBJECT_FORMAT_ERROR = 1102;
    public static final int OBJECT_ASSOCIATION_NOT_EXIST = 1103;
    public static final int OBJECT_DUPLICATE_ENTRY = 1104;
    public static final int PROPERTY_NOT_EXIST = 1201;
    public static final int PROPERTY_NAME_INVALID = 1202;
    public static final int PROPERTY_READ_ONLY = 1203;
    public static final int CRITERIA_FORMAT_INVALID = 1301;
    public static final int ACCESS_SUBJECT_NOT_EXIST = 1401;
    public static final int ACCESS_OBJECT_NOT_EXIST = 1402;
    public static final int ACCESS_RIGHTS_NOT_EXIST = 1403;
    public static final int ACCESS_PRIORITY_NOT_EXIST = 1404;
    public static final int ACCESS_RIGHTS_NOT_DEFINED = 1405;
    public static final int ACCESS_ROLE_NOT_EXIST = 1406;
    public static final int ACCESS_ROLE_IS_EXIST = 1407;
    public static final int ACCESS_ROLE_IS_NOT_APPLIED = 1408;
    public static final int ACCESS_RIGHTS_IS_NOT_APPLIED = 1409;
    public static final int ACCESS_ROLE_TYPE_IS_NOT_DEFINED = 1410;
    public static final int REQUEST_FORMAT_INVALID = 1501;
    public static final int METHOD_FORMAT_INVALID = 1502;
    public static final int QUOTA_METHODS_COUNT_MAX = 1601;
    public static final int SCRIPT_TYPE_NOT_SUPPORTED = 1701;
    public static final int SCRIPT_NOT_FOUND = 1702;
    public static final int SCRIPT_FIELD_NOT_DEFINED = 1703;
    public static final int SCRIPT_EVAL_EXCEPTION = 1704;
    public static final int SCRIPT_EVAL_TIMEOUT = 1705;
    public static final int SCRIPT_EVAL_DISABLED_IN_NODE = 1706;
    public static final int SCRIPT_IO_EXCEPTION = 1707;
    public static final int SCRIPT_IMPORT_EXCEPTION = 1708;
    public static final int SCRIPT_ONLY_LOCAL_EVAL_ALLOWED = 1709;
    public static final int SCRIPT_ALREADY_EXIST = 1710;
    public static final int SCRIPT_ANNOTATION_NOT_SUPPORTED = 1711;
    public static final int SCRIPT_ANNOTATION_SYNTAX_ERROR = 1712;
    public static final int SCRIPT_ANNOTATION_VALUE_NOT_SUPPORTED = 1713;
    public static final int SCRIPT_COMPILE_TIMEOUT = 1714;
    public static final int SCRIPT_ANNOTATION_USAGE_NOT_ALLOWED = 1715;
    public static final int SCHEDULER_TRIGGER_UNKNOWN_FORMAT = 1801;
    public static final int SCHEDULER_TASK_NOT_FOUND = 1802;
    public static final int SCHEDULER_PARAMS_INVALID_FORMAT = 1803;
    public static final int SYSTEM_USER_GROUP_NOT_EXIST = 1901;
    public static final int FILE_PATH_ACCESS_DENIED = 2001;
    public static final int FILE_PATH_NOT_EXIST = 2002;
    public static final int FILE_PATH_IS_EXIST = 2003;
    public static final int FILE_PATH_NOT_DIRECTORY = 2004;
    public static final int FILE_PATH_IS_DIRECTORY = 2005;
    public static final int FILE_MAX_LENGTH_LIMIT = 2006;
    public static final int FILE_NAME_SYNTAX_ERROR = 2007;
    public static final int SYSTEM_EVENT_UNKNOWN = 2101;
    public static final int SYSTEM_EVENT_ERROR_EXECUTE = 2102;
    public static final int REDIRECT_CLUSTER_NODE_EXCEPTION = 2201;
    public static final int NODE_MANAGER_ALL_HARDWARE_NODES_ARE_BUSY = 2202;
    public static final int NODE_MANAGER_ALL_IPS_ARE_BUSY = 2203;
    public static final int POOL_MANAGER_FAILED_TO_GET_IP_ADDRESS = 2204;
    public static final int POOL_MANAGER_FAILED_TO_GET_NODE = 2205;
    public static final int CONTEXT_NAME_INVALID = 2301;

    // BILLING
    public static final int SERVICE_PLAN_NOT_FOUND = 2206;
    public static final int EXTERN_BILLING_SYSTEM = 2207;
    public static final int NEGATIVE_PRICE = 2208;
    public static final int SERVICE_PLAN_ALREADY_EXIST = 2209;
    public static final int HIBERNATE_EXCEPTION = 2210; // DB
    public static final int SERVICE_PLAN_IS_USED = 2211; // cannot be deleted from db foreign references

    public static final int ILLEGAL_STATE = 2212;
    public static final int NOT_SUPPORTED = 2213;

    public static final int EXTERN_BILLING_FRAUD_CHECK_REQUIRED = 2222;
    // error message contains text for the end user.
    // display it.
    public static final int INVALID_USER_INPUT = 2223;

    public static final int REQUEST_ABORTED = 2224;

    // SSL
    public static final int SSL_CERTIFICATE_NOT_VALID = 3001;

    public static final int VCS_PROJECT_NOT_EXIST = 2500;
    public static final int VCS_PROJECT_ALREADY_EXIST = 2501;
    public static final int VCS_TYPE_NOT_SUPPORT = 2502;

    public static final int POOL_MANAGER_POOL_IP_NOT_FOUND = 2700;
    public static final int POOL_MANAGER_NO_FREE_IP = 2701;
    public static final int POOL_MANAGER_POOL_IP_NOW_BUSY = 2702;

    //JEM
    public static final int JEM_AUTHENTICATION_FAILED = 4000;
    public static final int JEM_ERROR_READ_CONFIG = 4001;
    public static final int JEM_NO_FREE_DISK_SPACE = 4075;
    public static final int JEM_ERROR_UNKNOWN = 4099;

    //Virtualization Layer
    public static final int VL_DISK_QUOTA_EXCEEDED = 5000;
    public static final int VL_EMPTY_OS_NODE_POOL = 5001;
    public static final int VL_MANAGER = 5002;
    public static final int ENVIRONMENT_MIGRATION_IS_NOT_POSSIBLE = 5003;


    //SSH access to container
    public static final int SSH_KEY_INVALID = 6000;
    public static final int SSH_KEY_NOT_UNIQUE_FINGERPRINT = 6001;
    public static final int SSH_KEY_NOT_UNIQUE_TITLE = 6002;
    public static final int SSH_KEY_TOO_LONG = 6003;
    public static final int SSH_KEY_TOO_LONG_TITLE = 6004;
    public static final int SSH_ACCESS_DISABLED = 6010;
    public static final int SSH_KEY_GENERATION_FAIL = 6020;
    public static final int NODE_CREDENTIALS_ABSENT = 6030;

    public static final int LABEL_VALUE_NOT_VALID = 8301;
    public static final int LABEL_NAME_NOT_VALID = 8300;

    public static String SOURCE_OF_RESPONSE = "hx-core";
    protected int result = -1;
    protected int reason = -1;
    protected String error = null;
    protected String source = SOURCE_OF_RESPONSE;
    private String raw = null;
    private static final Response OK_RESPONSE = new Response(Response.OK);

    public int getResult() {
        return result;
    }

    public void setResult(int result) {
        this.result = result;
    }

    public int getReason() {
        return reason;
    }

    public void setReason(int reason) {
        this.reason = reason;
    }

    public String getError() {
        return error;
    }

    public void setError(String error) {
        this.error = error;
    }

    public String getSource() {
        return source;
    }

    public void setSource(String source) {
        this.source = source;
    }

    public String getRaw() {
        return raw;
    }

    public void setRaw(String raw) {
        this.raw = raw;
    }

    public Response() {
    }

    public Response(int result) {
        this.result = result;
    }

    public Response(int result, String error) {
        this.result = result;
        this.error = error;
    }

    public Response(int result, String error, int reason) {
        this.result = result;
        this.error = error;
        this.reason = reason;
    }

    public Response(int result, String error, String source) {
        this(result, error);
        this.source = source;
    }

    public Response(Response response) {
        this(response.getResult(), response.getError());
    }

    public boolean isOK() {
        return getResult() == OK;
    }

    public Object fromString(String str) {
        try {
            return fromJSON(new JSONObject(str));
        } catch (JSONException ex) {
//            System.out.println("WARNING: JSONException ---------------");
//            System.out.println(str);
//            System.out.println("--------------------------------------");
//            ex.printStackTrace();
            setError(ex.toString() + " --> " + str.substring(0, Math.min(str.length(), 500)) + "...");
            setResult(ERROR_UNKNOWN);
            return this;
        }
    }

    protected Response _fromJSON(JSONObject json) throws JSONException {
        Class clazz = this.getClass();
        if (json.has("result")) {
            result = json.getInt("result");
        }
        if (json.has("reason")) {
            reason = json.getInt("reason");
        }
        if (json.has("error")) {
            error = json.getString("error");
        }
        if (json.has("source")) {
            source = json.getString("source");
        }
        if (json.has("raw")) {
            raw = json.getString("raw");
        }
        for (Method m : clazz.getDeclaredMethods()) {
            String name = m.getName();
            if (name.equalsIgnoreCase("fromJSON") || name.equalsIgnoreCase("_fromJSON")) {
                return this;
            }
        }
        /**
         * ниже следующий код выполнится только если у класа потомка не определн свой метод fromJSON или _fromJSON
         */
        Iterator keys = json.keys();
        while (keys.hasNext()) {
            String key = keys.next();
            try {
                Field field = clazz.getDeclaredField(key);
                Object value = json.get(key);
                field.setAccessible(true);
                field.set(this, value);
            } catch (IllegalAccessException ex2) {
                ex2.printStackTrace();
            } catch (NoSuchFieldException ex2) {
                continue;
            }
        }
        return this;
    }

    public Response fromJSON(JSONObject json) {
        try {
            return _fromJSON(json);
        } catch (JSONException ex) {
            ex.printStackTrace();
            error = ex.toString();
            result = ERROR_UNKNOWN;
        }
        return this;
    }

    protected JSONObject _toJSON() throws JSONException {
        JSONObject json = new JSONObject();
        if (getResult() > -1) {
            json.put("result", getResult());
        }
        if (getReason() > -1) {
            json.put("reason", getReason());
        }
        if (getError() != null) {
            json.put("error", getError());
        }
        if (!isOK() && getSource() != null) {
            json.put("source", getSource());
        }
        if (getRaw() != null) {
            json.put("raw", getRaw());
        }
        return json;
    }

    public JSONObject toJSON() {
        JSONObject json = null;
        try {
            json = _toJSON();
        } catch (Exception ex) {
            ex.printStackTrace();
            try {
                json = new JSONObject().put("result", ERROR_UNKNOWN).put("error", ex.toString());
            } catch (JSONException exc) {
            }
        }
        return json;
    }

    @Override
    public String toString() {
        return toJSON().toString();
    }

    public Object get(final String name) {
        Permissions perms = new Permissions();
        perms.add(new AllPermission());
        ProtectionDomain domain = new ProtectionDomain(new CodeSource((URL) null, (Certificate[]) null), perms);
        AccessControlContext relaxedAcc = new AccessControlContext(new ProtectionDomain[]{domain});
        final Class clazz = getClass();
        final Object _this = this;

        return AccessController.doPrivileged(new PrivilegedAction() {

            public Object run() {
                try {
                    Field field = null;
                    try {
                        field = clazz.getDeclaredField(name);
                    } catch (NoSuchFieldException ex1) {
                        try {
                            field = clazz.getField(name);
                        } catch (NoSuchFieldException ex2) {
                        }
                    }
                    if (field != null) {
                        field.setAccessible(true);
                        return field.get(_this);
                    } else {
                        String methodName = "get" + name.substring(0, 1).toUpperCase() + name.substring(1);
                        Method method = null;
                        try {
                            method = clazz.getDeclaredMethod(methodName);
                        } catch (NoSuchMethodException ex1) {
                            try {
                                method = clazz.getMethod(methodName);
                            } catch (NoSuchMethodException ex2) {
                            }
                        }
                        if (method != null) {
                            method.setAccessible(true);
                            return method.invoke(_this);
                        } else {
                            throw new RuntimeException("field [" + name + "] or method [" + methodName + "] doesn't exist");
                        }
                    }
                } catch (Exception ex) {
                    ex.printStackTrace();
                    throw new RuntimeException(ex);
                }
            }
        }, relaxedAcc);

    }

    public static final Object makeResponse(Class clazz, Response response) {
        return makeResponse(clazz, response.getResult(), response.getError(), response.getRaw());
    }

    public static final Object makeResponse(Class clazz, int result, String error) {
        return makeResponse(clazz, result, error, null);
    }

    public static final Object makeResponse(Class clazz, int result, String error, String raw) {
        Constructor constr = null;
        try {
            try {
                constr = clazz.getConstructor();
                Object obj = constr.newInstance();
                clazz.getMethod("setResult", int.class).invoke(obj, result);
                clazz.getMethod("setError", String.class).invoke(obj, error);
                if (raw != null && !raw.isEmpty()) {
                    clazz.getMethod("setRaw", String.class).invoke(obj, raw);
                }
                return obj;
            } catch (NoSuchMethodException ex) {
                ex.printStackTrace();
                constr = clazz.getConstructor(int.class, String.class);
                return constr.newInstance(result, error);
            }
        } catch (Exception ex) {
            ex.printStackTrace();
            throw new RuntimeException(ex);
        }
    }

    public static final Object makeResponse(Class clazz, String response) {
        Constructor constructor;
        try {
            try {
                constructor = clazz.getConstructor();
                Object obj = constructor.newInstance();

                if (response != null && !response.isEmpty()) {
                    clazz.getMethod("fromString", String.class).invoke(obj, response);
                }

                return obj;
            } catch (NoSuchMethodException ex) {
                ex.printStackTrace();
                constructor = clazz.getConstructor(int.class, String.class);
                return constructor.newInstance(ERROR_UNKNOWN, ex.toString());
            }
        } catch (Exception ex) {
            ex.printStackTrace();
            throw new RuntimeException(ex);
        }
    }

    public static final Response OK() {
        return OK_RESPONSE;
    }

    public boolean isNotOK() {
        return !isOK();
    }
}    
    
    
    

    




    
    
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