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com.eduworks.ec.remote.EcRemote Maven / Gradle / Ivy
package com.eduworks.ec.remote;
import org.stjs.javascript.*;
import org.stjs.javascript.dom.DOMEvent;
import org.stjs.javascript.functions.Callback0;
import org.stjs.javascript.functions.Callback1;
import org.stjs.javascript.functions.Callback3;
import static org.stjs.javascript.JSGlobal.JSON;
/**
* Wrapper to handle all remote web service invocations.
*
* @author [email protected]
* @author [email protected]
* @class EcRemote
* @module com.eduworks.ec
*/
public class EcRemote {
/**
* Turn this property off to cause all remote web service calls to be
* synchronous. Can be useful for test scripts, blocking calls, etc.
*
* @property async
* @static
* @type boolean
*/
public static boolean async = true;
/**
* Timeout for AJAX requests
*
* @property async
* @static
* @type boolean
*/
public static int timeout = 60 * 1000 * 5;
/**
* POSTs a request to a remote endpoint. Composed of a server endpoint (root
* URL) and a service (service path). Sends form data as a multi-part mime
* request.
*
* @param {string} server Protocol, hostname and path to the remote handler.
* @param {string} service Path to service to invoke.
* @param {FormData} fd Form data to send as multi-part mime.
* @param {function(object)} success Method that is invoked if the server
* responds with a success (per jQuery ajax)
* @param {function(string)} failure Method that is invoked if the server
* responds with an error (per jQuery ajax) or a non-200/300.
* @method postExpectingObject
* @static
*/
public static void postExpectingObject(String server, String service, FormData fd, final Callback1 success, final Callback1 failure) {
postInner(server, service, fd, null, getSuccessJSONCallback(success, failure), failure);
}
/**
* POSTs a request to a remote endpoint. Composed of a server endpoint (root
* URL) and a service (service path). Sends form data as a multi-part mime
* request.
*
* @param {string} server Protocol, hostname and path to the remote handler.
* @param {string} service Path to service to invoke.
* @param {FormData} fd Form data to send as multi-part mime.
* @param {function(string)} success Method that is invoked if the server
* responds with a success (per jQuery ajax)
* @param {function(string)} failure Method that is invoked if the server
* responds with an error (per jQuery ajax) or a non-200/300.
* @method postExpectingString
* @static
*/
public static void postExpectingString(String server, String service, FormData fd, final Callback1 success, final Callback1 failure) {
postInner(server, service, fd, null, success, failure);
}
/**
* POSTs a request to a remote endpoint. Composed of a server endpoint (root
* URL) and a service (service path). Sends form data as a multi-part mime
* request. Includes headers.
*
* @param {string} server Protocol, hostname and path to the remote handler.
* @param {string} service Path to service to invoke.
* @param {FormData} fd Form data to send as multi-part mime.
* @param {Object} headers Headers to attach to the HTTP post.
* @param {function(string)} success Method that is invoked if the server
* responds with a success (per jQuery ajax)
* @param {function(string)} failure Method that is invoked if the server
* responds with an error (per jQuery ajax) or a non-200/300.
* @method postWithHeadersExpectingString
* @static
*/
public static void postWithHeadersExpectingString(String server, String service, FormData fd, Map headers,
final Callback1 success, final Callback1 failure) {
postInner(server, service, fd, headers, success, failure);
}
private static void postInner(String server, String service, FormData fd, Map headers,
final Callback1 successCallback, final Callback1 failureCallback) {
String url = server;
if (!url.endsWith("/") && service != null && !"".equals(service)) {
url += "/";
}
if (service != null) {
url += service;
}
url = upgradeHttpToHttps(url);
XMLHttpRequest xhr = null;
String theBoundary = null;
// Node JS serialization check.
if (JSObjectAdapter.$get(fd, "_streams") != null) {
// We're in node. Serialize the 'form-data' object by hand.
Array chunks = (Array) JSObjectAdapter.$get(fd, "_streams");
String all = "";
for (int i = 0; i < chunks.$length(); i++) {
if (JSGlobal.typeof(chunks.$get(i)) == "function") {
all = all + "\r\n";
} else {
all = all + chunks.$get(i);
}
}
all = all + "\r\n" + "\r\n" + "--" + JSObjectAdapter.$get(fd, "_boundary") + "--";
theBoundary = (String) JSObjectAdapter.$get(fd, "_boundary");
fd = (FormData) (Object) all;
} else {
}
if (Global.typeof(EcNodeJs.isNodeJs) != "undefined" && EcRemote.async)
{
if (headers == null) headers = (Map)new Object();
JSObjectAdapter.$put(headers,"Content-Type","multipart/form-data; boundary=" + theBoundary);
Object requestObject = new Object();
JSObjectAdapter.$put(requestObject,"method","POST");
JSObjectAdapter.$put(requestObject,"url",url);
JSObjectAdapter.$put(requestObject,"headers",headers);
JSObjectAdapter.$put(requestObject,"body",fd);
EcNodeJs.request(requestObject,new Callback3(){
@Override
public void $invoke(String error, Object response, String body) {
if (failureCallback != null && error != null) failureCallback.$invoke(error);
else if (failureCallback != null && JSObjectAdapter.$get(response,"statusCode") != (Object)200)
failureCallback.$invoke(body);
else if (successCallback != null)
successCallback.$invoke(body);
}
});
return;
}
if (Global.typeof(EcLevrHttp.httpStatus) == "undefined") {
xhr = new XMLHttpRequest();
xhr.open("POST", url, async);
final XMLHttpRequest xhrx = xhr;
xhr.onreadystatechange = new Callback0() {
@Override
public void $invoke() {
if (xhrx.readyState == 4 && xhrx.status == 200) {
if (successCallback != null)
successCallback.$invoke(xhrx.responseText);
} else if (xhrx.readyState == 4) {
if (failureCallback != null)
failureCallback.$invoke(xhrx.responseText);
}
}
};
if (theBoundary != null)
xhr.setRequestHeader("Content-Type", "multipart/form-data; boundary=" + theBoundary);
}
if (xhr != null)
if (async)
JSObjectAdapter.$put(xhr, "timeout", timeout);
// JSObjectAdapter.$put(xhr, "withCredentials", true);
if (Global.typeof(EcLevrHttp.httpStatus) != "undefined") {
String result = JSON.stringify(EcLevrHttp.httpPost(fd, url, "multipart/form-data; boundary=" + theBoundary, "false", theBoundary));
if (successCallback != null)
successCallback.$invoke(result);
} else {
xhr.send((String) (Object) fd);
}
}
/**
* GETs something from a remote endpoint. Composed of a server endpoint
* (root URL) and a service (service path).
*
* @param {string} server Protocol, hostname and path to the remote handler.
* @param {string} service Path to service to invoke.
* @param {function(object)} success Method that is invoked if the server
* responds with a success (per jQuery ajax)
* @param {function(string)} failure Method that is invoked if the server
* responds with an error (per jQuery ajax) or a non-200/300.
* @method getExpectingObject
* @static
*/
public static void getExpectingObject(String server, String service, final Callback1 success, final Callback1 failure) {
getExpectingString(server, service, getSuccessJSONCallback(success, failure), failure);
}
/**
* GETs something from a remote endpoint. Composed of a server endpoint
* (root URL) and a service (service path).
*
* @param {string} server Protocol, hostname and path to the remote handler.
* @param {string} service Path to service to invoke.
* @param {function(object)} success Method that is invoked if the server
* responds with a success (per jQuery ajax)
* @param {function(string)} failure Method that is invoked if the server
* responds with an error (per jQuery ajax) or a non-200/300.
* @method getExpectingString
* @static
*/
public static void getExpectingString(String server, String service, final Callback1 success, final Callback1 failure) {
String url = urlAppend(server, service);
url = upgradeHttpToHttps(url);
XMLHttpRequest xhr = null;
if (Global.typeof(EcLevrHttp.httpStatus) == "undefined") {
xhr = new XMLHttpRequest();
xhr.open("GET", url, async);
final XMLHttpRequest xhrx = xhr;
xhr.onreadystatechange = new Callback0() {
@Override
public void $invoke() {
if (xhrx.readyState == 4 && xhrx.status == 200)
if (success != null)
success.$invoke(xhrx.responseText);
else if (xhrx.readyState == 4)
if (failure != null)
failure.$invoke(xhrx.responseText);
}
};
xhr.onerror = new Callback1() {
@Override
public void $invoke(DOMEvent e) {
if (failure != null) {
failure.$invoke(null);
}
}
};
}
if (Global.typeof(EcNodeJs.isNodeJs) != "undefined" && EcRemote.async)
{
Object requestObject = new Object();
JSObjectAdapter.$put(requestObject,"method","GET");
JSObjectAdapter.$put(requestObject,"url",url);
EcNodeJs.request(requestObject,new Callback3(){
@Override
public void $invoke(String error, Object response, String body) {
if (failure != null && error != null) failure.$invoke(error);
else if (failure != null && JSObjectAdapter.$get(response,"statusCode") != (Object)200)
failure.$invoke(body);
else if (success != null)
success.$invoke(body);
}
});
return;
}
if (xhr != null) {
if (async)
JSObjectAdapter.$put(xhr, "timeout", timeout);
}
// JSObjectAdapter.$put(xhr, "withCredentials", true);
if (Global.typeof(EcLevrHttp.httpStatus) != "undefined") {
if (success != null)
success.$invoke(JSON.stringify(EcLevrHttp.httpGet(url)));
} else {
xhr.send();
}
}
public static String urlAppend(String server, String service) {
String url = server;
if (!url.endsWith("/") && service != null && service.equals("")) {
url += "/";
}
if (service != null) {
url += service;
}
return url;
}
/**
* DELETEs something at a remote endpoint. Composed of a server endpoint
* (root URL) and a service (service path).
*
* @param {string} server Protocol, hostname and path to the remote handler.
* @param {string} service Path to service to invoke.
* @param {function(object)} success Method that is invoked if the server
* responds with a success (per jQuery ajax)
* @param {function(string)} failure Method that is invoked if the server
* responds with an error (per jQuery ajax) or a non-200/300.
* @method _delete
* @static
*/
public static void _delete(String url, String signatureSheet, final Callback1 success, final Callback1 failure) {
url = upgradeHttpToHttps(url);
XMLHttpRequest xhr = null;
if (Global.typeof(EcLevrHttp.httpStatus) == "undefined") {
xhr = new XMLHttpRequest();
// JSObjectAdapter.$put(xhr, "withCredentials", true);
xhr.open("DELETE", url, async);
final XMLHttpRequest xhrx = xhr;
xhr.onreadystatechange = new Callback0() {
@Override
public void $invoke() {
if (xhrx.readyState == 4 && xhrx.status == 200) {
if (success != null)
success.$invoke(xhrx.responseText);
} else if (xhrx.readyState == 4) {
if (failure != null)
failure.$invoke(xhrx.responseText);
}
}
};
}
if (Global.typeof(EcNodeJs.isNodeJs) != "undefined" && EcRemote.async)
{
Object sso = new Object();
JSObjectAdapter.$put(sso,"signatureSheet",signatureSheet);
Object requestObject = new Object();
JSObjectAdapter.$put(requestObject,"method","DELETE");
JSObjectAdapter.$put(requestObject,"url",url);
JSObjectAdapter.$put(requestObject,"headers",sso);
EcNodeJs.request(requestObject,new Callback3(){
@Override
public void $invoke(String error, Object response, String body) {
if (failure != null && error != null) failure.$invoke(error);
else if (failure != null && JSObjectAdapter.$get(response,"statusCode") != (Object)200)
failure.$invoke(body);
else if (success != null)
success.$invoke(body);
}
});
return;
}
if (xhr != null){
if (async)
JSObjectAdapter.$put(xhr, "timeout", timeout);
xhr.setRequestHeader("signatureSheet", signatureSheet);
}
if (Global.typeof(EcLevrHttp.httpStatus) != "undefined") {
if (success != null){
Object sso = new Object();
JSObjectAdapter.$put(sso,"signatureSheet",signatureSheet);
success.$invoke(EcLevrHttp.httpDelete(url,null,null,null,sso));
}
} else {
xhr.send();
}
}
protected static String upgradeHttpToHttps(String url) {
// Upgrade protocol to avoid mixed active content
if (Global.window != null) {
if (Global.window.location != null) {
if (url.indexOf(Global.window.location.protocol) == -1) {
if (Global.window.location.protocol.startsWith("https")) {
if (!url.startsWith("https:")) {
url = url.replace("http:", "https:");
}
}
}
}
}
return url;
}
protected static Callback1 getSuccessJSONCallback(final Callback1 success, final Callback1 failure) {
return new Callback1() {
@Override
public void $invoke(String s) {
final Object o;
try {
o = JSON.parse(s);
} catch (Exception ex) {
if (ex == null)
failure.$invoke("An unspecified error occurred during a network request.");
else
failure.$invoke((String) (Object) ex);
return;
}
success.$invoke(o);
}
};
}
}
