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Handle error responses via JS.

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This commit is contained in:
Michael Jumper
2013-03-02 19:08:08 -08:00
parent 0db2f6d394
commit 33c90df945
1 changed files with 45 additions and 27 deletions
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72
guacamole/src/main/webapp/scripts/service.js
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@@ -164,6 +164,33 @@ GuacamoleService.PermissionSet = function() {
};
/**
* Handles the reponse from the given XMLHttpRequest object, throwing an error
* with a meaningful message if the request failed.
*
* @param {XMLHttpRequest} xhr The XMLHttpRequest to check the response of.
*/
GuacamoleService.handleResponse = function(xhr) {
// For HTTP Forbidden, just return permission denied
if (xhr.status == 403)
throw new Error("Permission denied.");
// Otherwise, if unsuccessful, throw error with message derived from
// response
if (xhr.status != 200) {
// Retrieve error message
var message = xhr.getResponseHeader("Guacamole-Error-Message")
|| xhr.statusText;
// Throw error with derived message
throw new Error(message);
}
};
/**
* Collection of service functions which deal with connections. Each function
* makes an explicit HTTP query to the server, and parses the response.
@@ -198,9 +225,8 @@ GuacamoleService.Connections = {
xhr.open("GET", list_url, false);
xhr.send(null);
// If fail, throw error
if (xhr.status != 200)
throw new Error(xhr.statusText);
// Handle response
GuacamoleService.handleResponse(xhr);
// Otherwise, get list
var connections = new Array();
@@ -289,9 +315,8 @@ GuacamoleService.Connections = {
xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhr.send(data);
// If fail, throw error
if (xhr.status != 200)
throw new Error(xhr.statusText);
// Handle response
GuacamoleService.handleResponse(xhr);
},
@@ -323,9 +348,8 @@ GuacamoleService.Connections = {
xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhr.send(data);
// If fail, throw error
if (xhr.status != 200)
throw new Error(xhr.statusText);
// Handle response
GuacamoleService.handleResponse(xhr);
},
@@ -348,9 +372,8 @@ GuacamoleService.Connections = {
xhr.open("GET", connections_url, false);
xhr.send(null);
// If fail, throw error
if (xhr.status != 200)
throw new Error(xhr.statusText);
// Handle response
GuacamoleService.handleResponse(xhr);
}
@@ -382,9 +405,8 @@ GuacamoleService.Users = {
xhr.open("GET", users_url, false);
xhr.send(null);
// If fail, throw error
if (xhr.status != 200)
throw new Error(xhr.statusText);
// Handle response
GuacamoleService.handleResponse(xhr);
// Otherwise, get list
var users = new Array();
@@ -477,9 +499,8 @@ GuacamoleService.Users = {
xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhr.send(data);
// If fail, throw error
if (xhr.status != 200)
throw new Error(xhr.statusText);
// Handle response
GuacamoleService.handleResponse(xhr);
},
@@ -502,9 +523,8 @@ GuacamoleService.Users = {
xhr.open("GET", users_url, false);
xhr.send(null);
// If fail, throw error
if (xhr.status != 200)
throw new Error(xhr.statusText);
// Handle response
GuacamoleService.handleResponse(xhr);
},
@@ -527,9 +547,8 @@ GuacamoleService.Users = {
xhr.open("GET", users_url, false);
xhr.send(null);
// If fail, throw error
if (xhr.status != 200)
throw new Error(xhr.statusText);
// Handle response
GuacamoleService.handleResponse(xhr);
}
@@ -573,9 +592,8 @@ GuacamoleService.Permissions = {
xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhr.send(data);
// If fail, throw error
if (xhr.status != 200)
throw new Error(xhr.statusText);
// Handle response
GuacamoleService.handleResponse(xhr);
// Otherwise, build PermissionSet
var i, type, name;