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flash.ApiInvoker.as Maven / Gradle / Ivy
package io.swagger.common {
import io.swagger.event.ApiClientEvent;
import io.swagger.event.Response;
import flash.events.EventDispatcher;
import flash.utils.*;
import mx.rpc.AsyncToken;
import mx.rpc.events.ResultEvent;
import mx.rpc.events.FaultEvent;
import mx.utils.ObjectUtil;
import mx.rpc.http.HTTPService;
import mx.messaging.messages.HTTPRequestMessage;
import mx.messaging.ChannelSet;
import mx.messaging.channels.DirectHTTPChannel;
import asaxb.xml.bind.ASAXBContext;
import asaxb.xml.bind.Unmarshaller;
public class ApiInvoker extends EventDispatcher {
private static const DELETE_DATA_DUMMY:String = "dummyDataRequiredForDeleteOverride";
private static const X_HTTP_OVERRIDE_KEY:String = "X-HTTP-Method-Override";
private static const CONTENT_TYPE_HEADER_KEY:String = "Content-Type";
public function ApiInvoker(apiUsageCredentials:ApiUserCredentials, eventNotifier:EventDispatcher, useProxy:Boolean = true) {
_apiUsageCredentials = apiUsageCredentials;
_useProxyServer = useProxy;
if (_apiUsageCredentials.hostName != null) {
_proxyHostName = _apiUsageCredentials.hostName;
}
_apiPath = _apiUsageCredentials.apiPath;
_proxyPath = _apiUsageCredentials.proxyPath;
_apiProxyServerUrl = _apiUsageCredentials.apiProxyServerUrl;
_apiEventNotifier = eventNotifier;
}
public var _apiEventNotifier:EventDispatcher;
internal var _apiProxyServerUrl:String = "";
internal var _useProxyServer:Boolean = true;
private var _apiUsageCredentials:ApiUserCredentials;
private var _baseUrl:String = "";
private var _proxyHostName:String = "";
private var _apiPath:String = "";
private var _proxyPath:String = "";
public function invokeAPI(resourceURL:String, method:String, queryParams:Dictionary, postObject:Object, headerParams:Dictionary):AsyncToken {
//make the communication
if (_useProxyServer) {
resourceURL = _apiProxyServerUrl + resourceURL;
}
else {
resourceURL = "http://" + _proxyHostName + _apiPath + resourceURL;
}
var counter:int = 0;
var symbol:String = "&";
var paramValue:Object;
for (var paramName:String in queryParams) {
paramValue = queryParams[paramName];
//var key:String = paramName;
// do stuff
symbol = "&";
if (counter == 0) {
symbol = "?";
}
resourceURL = resourceURL + symbol + paramName + "=" + paramValue.toString();
counter++;
}
// trace(resourceURL);
//create a httpservice and invoke the rest url waiting for response
var requestHeader:Object = new Object();
if (headerParams != null) {
for (var key:String in headerParams) {
requestHeader[key] = headerParams[key];
}
}
resourceURL = ApiUrlHelper.appendTokenInfo(resourceURL, requestHeader, _apiUsageCredentials);
var bodyData:String = marshal(postObject).toString();//restRequest.postData;
return doRestCall(resourceURL, onApiRequestResult, onApiRequestFault, method, bodyData, requestHeader, "application/xml");
}
public function marshal(source:Object):Object {
// trace("marshal got - " + source)
if (source is String) {
return source;
} else if (source is Array && source.length > 0) {
var writer:XMLWriter = new XMLWriter();
var sourceArray:Array = source as Array;
var arrayEnclosure:String = getArrayEnclosure(sourceArray);
writer.xml.setName(arrayEnclosure);
for (var i:int = 0; i < sourceArray.length; i++) {
var o:Object = sourceArray[i];
writer.xml.appendChild(marshal(o));
}
return writer.xml;
} else
return marshalObject(source);
}
public function marshalObject(source:Object):XML {
var writer:XMLWriter = new XMLWriter();
var objDescriptor:XML = describeType(source);
var property:XML;
var propertyType:String;
var propertyValue:Object;
var qualifiedClassName:String = objDescriptor.@name;
qualifiedClassName = qualifiedClassName.replace("::", ".");
var className:String = qualifiedClassName.substring(qualifiedClassName.lastIndexOf(".") + 1);
className = className.toLowerCase() + className.substring(1);
writer.xml.setName(className);
for each(property in objDescriptor.elements("variable")) {
propertyValue = source[property.@name];
if (propertyValue != null) {
if (ObjectUtil.isSimple(propertyValue)) {
writer.addProperty(property.@name, propertyValue.toString());
}
else {
writer.addProperty(property.@name, marshal(propertyValue).toXMLString());
}
}
}
for each(property in objDescriptor.elements("accessor")) {
if (property.@access == "readonly") {
continue;
}
propertyValue = source[property.@name];
if (source[property.@name] != null) {
if (ObjectUtil.isSimple(propertyValue)) {
writer.addProperty(property.@name, propertyValue.toString());
}
else {
writer.addProperty(property.@name, marshal(propertyValue).toXMLString());
}
}
}
return writer.xml;
}
public function escapeString(str:String):String {
return str;
}
private function doRestCall(url:String, resultFunction:Function, faultFunction:Function = null,
restMethod:String = "GET",
bodyData:Object = null, headers:Object = null, contentType:String = "application/xml"):AsyncToken {
var httpService:HTTPService = new HTTPService();
if (headers == null) {
headers = new Object();
}
httpService.method = restMethod;
if (restMethod.toUpperCase() != HTTPRequestMessage.GET_METHOD) {
//httpService.method = HTTPRequestMessage.POST_METHOD; - not required as we're using the proxy
if (bodyData == null) {
bodyData = new Object();
}
if (restMethod == HTTPRequestMessage.DELETE_METHOD) {
headers[X_HTTP_OVERRIDE_KEY] = HTTPRequestMessage.DELETE_METHOD;
bodyData = DELETE_DATA_DUMMY;
}
else if (restMethod == HTTPRequestMessage.PUT_METHOD) {
headers[X_HTTP_OVERRIDE_KEY] = HTTPRequestMessage.PUT_METHOD;
}
else {
headers[CONTENT_TYPE_HEADER_KEY] = contentType;
}
}
else {
//if the request type is GET and content type is xml then the Flex HTTPService converts it to a POST ... yeah
contentType = null;
}
httpService.url = url;
httpService.contentType = contentType;
httpService.resultFormat = "e4x";
httpService.headers = headers;
httpService.addEventListener(ResultEvent.RESULT, resultFunction);
if (faultFunction != null) {
httpService.addEventListener(FaultEvent.FAULT, faultFunction);
}
if (_useProxyServer) {
httpService.useProxy = true;
var channelSet:ChannelSet = new ChannelSet();
var httpChannel:DirectHTTPChannel = new DirectHTTPChannel("");
httpChannel.uri = ApiUrlHelper.getProxyUrl(_proxyHostName, _proxyPath);
channelSet.addChannel(httpChannel);
httpService.channelSet = channelSet;
}
return httpService.send(bodyData);
}
private function onApiRequestResult(event:ResultEvent):void {
// I put this in comments. Here, it's trying to parse XML and it fails if it's not XML.
// Therefore, it's better to have the raw result that we can parse as we want.
// TODO: Create different parser (JSON, XML, etc.)
/*
var completionListener:Function = event.token.completionListener;
var result:Object = event.result;
var resultType:Class = event.token.returnType;
var resultObject:Object;
if (resultType != null) {
var context:ASAXBContext = ASAXBContext.newInstance(resultType);
var unmarshaller:Unmarshaller = context.createUnmarshaller();
var resultXML:XML = new XML(event.result);
try {
resultObject = unmarshaller.unmarshal(resultXML);
}
catch (error:TypeError) {
var errorResponse:Response = new Response(false, null, "Could not unmarshall response");
if (_apiEventNotifier != null) { //dispatch event via assigned dispatcher
var failureEvent:ApiClientEvent = new ApiClientEvent(event.token.completionEventType);
failureEvent.response = errorResponse;
_apiEventNotifier.dispatchEvent(failureEvent);
}
}
if (resultObject is ListWrapper) {
resultObject = ListWrapper(resultObject).getList();
}
}
var response:Response = new Response(true, resultObject);
*/
var response:Response = new Response(true, event.result);
response.requestId = event.token.requestId;
var successEventType:String = event.token.completionEventType != null ? event.token.completionEventType : ApiClientEvent.SUCCESS_EVENT;
if (_apiEventNotifier != null) { //dispatch event via assigned dispatcher
var successEvent:ApiClientEvent = new ApiClientEvent(successEventType);
successEvent.response = response;
_apiEventNotifier.dispatchEvent(successEvent);
}
}
private function onApiRequestFault(event:FaultEvent):void {
var completionListener:Function = event.token.completionListener;
if (completionListener != null) {
completionListener.call(null, new Response(false, null, event.fault.faultString));
}
var failureEventType:String = event.token.completionEventType != null ? event.token.completionEventType : ApiClientEvent.FAILURE_EVENT;
if (_apiEventNotifier != null) { //dispatch event via assigned dispatcher
var failureEvent:ApiClientEvent = new ApiClientEvent(failureEventType);
failureEvent.response = new Response(false, null, event.fault.faultString);
_apiEventNotifier.dispatchEvent(failureEvent);
}
}
private function getArrayEnclosure(arr:Array):String {
if (arr != null && arr.length > 0) {
var className:String = flash.utils.getQualifiedClassName(arr[0])
if (className.indexOf("::") > 0)
className = className.substr(className.indexOf("::") + 2, className.length)
return className.substring(0, 1).toLowerCase() + className.substring(1, className.length) + "s";
} else
return "";
}
}
}
