org.dasein.cloud.rackspace.RackspaceException.java Source code

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Here is the source code for org.dasein.cloud.rackspace.RackspaceException.java

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/**
 * Copyright (C) 2009-2012 enStratus Networks Inc
 *
 * ====================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ====================================================================
 */

package org.dasein.cloud.rackspace;

import org.dasein.cloud.CloudErrorType;
import org.dasein.cloud.CloudException;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

public class RackspaceException extends CloudException {
    private static final long serialVersionUID = -9188123825416917437L;

    static public class ExceptionItems {
        public CloudErrorType type;
        public int code;
        public String message;
        public String details;
    }

    static public ExceptionItems parseException(int code, String json) {
        ExceptionItems items = new ExceptionItems();

        items.code = code;
        items.type = CloudErrorType.GENERAL;
        items.message = "unknown";
        items.details = "The cloud provided an error code without explanation";

        if (json != null) {
            try {
                JSONObject ob = new JSONObject(json);

                if (ob.has("details")) {
                    items.details = ob.getString("details");
                } else {
                    items.details = "[" + code + "] " + items.message;
                }
                if (ob.has("message")) {
                    items.message = ob.getString("message");
                    if (items.message == null) {
                        items.message = "unknown";
                    } else {
                        items.message = items.message.trim();
                    }
                    if (code == 400 && items.message.equalsIgnoreCase("validation failure")
                            && ob.has("validationErrors")) {
                        JSONObject v = ob.getJSONObject("validationErrors");

                        if (v.has("messages")) {
                            StringBuilder str = new StringBuilder();
                            JSONArray msgs = v.getJSONArray("messages");

                            for (int i = 0; i < msgs.length(); i++) {
                                String msg = msgs.getString(i).trim();

                                if (msg != null) {
                                    if (str.length() > 0) {
                                        str.append("; ");
                                    }
                                    str.append(msg);
                                }
                            }
                            if (str.length() > 0) {
                                items.details = str.toString();
                            }
                        }
                    }
                } else {
                    items.message = "unknown";
                }
                String t = items.message.toLowerCase().trim();

                if (t.equals("unauthorized")) {
                    items.type = CloudErrorType.AUTHENTICATION;
                } else if (t.equals("serviceunavailable")) {
                    items.type = CloudErrorType.CAPACITY;
                } else if (t.equals("badrequest") || t.equals("badmediatype") || t.equals("badmethod")
                        || t.equals("notimplemented")) {
                    items.type = CloudErrorType.COMMUNICATION;
                } else if (t.equals("overlimit")) {
                    items.type = CloudErrorType.QUOTA;
                } else if (t.equals("servercapacityunavailable")) {
                    items.type = CloudErrorType.CAPACITY;
                } else if (t.equals("itemnotfound")) {
                    return null;
                }
            } catch (JSONException e) {
                RackspaceCloud.getLogger(RackspaceException.class, "std")
                        .warn("parseException(): Invalid JSON in cloud response: " + json);

                items.details = json;
            }
        }
        return items;
    }

    public RackspaceException(ExceptionItems items) {
        super(items.type, items.code, items.message, items.details);
    }
}