Parse's documentation states that a cloud function would look like so:
[PFCloud callFunctionInBackground:#"averageStars"
withParameters:#{#"movie": #"The Matrix"}
block:^(NSNumber *ratings, NSError *error) {
if (!error) {
// ratings is 4.5
}
}];
However, I can't seem to figure out where the API request would be placed if I wanted to ping eBay's item database. The format of the request I'm referring to is below:
var url = "http://svcs.ebay.com/services/search/FindingService/v1";
url += "?OPERATION-NAME=findItemsByKeywords";
url += "&SERVICE-VERSION=1.0.0";
url += "&SECURITY-APPNAME=MyAppID";
url += "&GLOBAL-ID=EBAY-US";
url += "&RESPONSE-DATA-FORMAT=JSON";
url += "&callback=_cb_findItemsByKeywords";
url += "&REST-PAYLOAD";
url += "&keywords=harry%20potter";
url += "&paginationInput.entriesPerPage=3";
The request to PFCloud class is used to interact with parse's servers, it can't connect directly with third party services.
You can however, interact with third party services via http requests. You can perform an httpRequest via your cloud code function. Http requests are pretty standard JavaScript, you can read about them here!
If eBay has a javascript library, you might be able to wrap it as a custom module and use it that way. You can read about that here.
And, just a reminder, Make sure you're not doing anything too heavy, as timeout is I think, 15 seconds.
Related
I have an app which has a UIWebView inside of it with a loaded website. This website has a chart in it which is periodicly updated with data from remote server via websockets (socket.io).
Im new to websockets technology but Im trying to somehow intercept the chart data that the website is receiving from server via it.
Till now I have managed to catch http requests sent by the website of such address format: “http://website-address/socket.io/?auth_token=...”
I have the socket.io library for iOS but don’t know how to use it to somehow spoof the website connection and acquire the data downloaded by the website. Can anyone help? Is it even possible?
Switch to WKWebView if you can. Using javascript bridge is much easier there. That said, with UIWebView, you'd need to inject a script that adds a handler for events received by the socket that you are trying to listen to. You can either create an io variable by yourself but apparently the server needs auth token. If you cannot create an auth token, you can only do this if you have access to the io variable created by the website.
Then for adding a handler, you'll need to know what the event name is, that delivers the chart data. You can snoop around the website and see if you can find that. If you cannot all bets are off. Once we register a handler and get the data, we need to pass this back to your native code. This is where WKWebView would keep it clean by letting you add message handlers that can deliver messages from js to native code. For UIWebView you'll have to create a custom url scheme and spoof a navigation request to pass the data. Lets assume your custom url scheme is 'myApp'. Then the script you'd need to inject would be:
<script>
/* if you can access/create the auth token
var socket = io('http://website-address/socket.io/?auth_token=');
*/
var socket = getioReferenceCreatedByWebsite();
socket.on('<eventName>',function(){
window.location = 'myApp://<data>';
};
</script>
In your native code:
...
webView.delegate = self;
[webView stringByEvaluatingJavaScriptFromString:#"<theAboveJSAsAString>"];
....
}
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{
if(request.URL.scheme == #"myApp"){
NSString *data = request.URL.path;
//handle the data
return NO;
}
return YES;
}
In regards to Santhosh R answer. I had the problem he mentioned where I could not get a reference to the websocket object as it was caught up in a closure.
I solved this by adding in a preload script which wraps the native Websocket object to store any instantiated websocket objects in an array and then return the newly created websocket object.
Here is the code.
in your WebView element add in a preload attribute.
<webview id="myWebview" src="http://exmple.com" preload="./interceptor.js"></webview>
and then in inteceptor.js
window.NativeWebsocket = WebSocket;
window.WebSocket = function(url, protocols){
window.interceptedWebsockets = [];
var ws = new NativeWebsocket(url, protocols);
interceptedWebsockets.push(ws);
return ws;
}
Then, inside your WebView context you can an access array of instantiated websocket objects using window.interceptedWebsockets
I'd like to make some push alarm on iOS
When user set Alarm on specific time, and Server sends Weather Data by calling Weather API (ex OpenweatherMap) that time.
is it possible by using cloud functions in Firebase
Yes, this can be done with the request module.
See Use firebase cloud function to send POST request to non-google server where you will find:
// import the module
var request = require('request');
// make the request
request('put your external url here', function (error, response, body) {
if (!error && response.statusCode == 200) {
//here put what you want to do with the request
}
})
Note that you will have to activate a paid plan, because the free plan (Spark plan) only allows "outbound network requests only to Google-owned services"
Note also that you have to install the request package before being able to call it as shown above.
I'm trying to create simple autocomplete UI widget:
self.autocompleteQuery = [[SPGooglePlacesAutocompleteQuery alloc] initWithApiKey:[GlobalConfig sharedInstance].kGoogleBrowserKey];
self.autocompleteQuery.language = kFFAutocompleteQueryLanguage;
self.autocompleteQuery.types = SPPlaceTypeAddress;
self.autocompleteQuery.location = [FFAppDataHelper coordinatesForMoscow];
self.autocompleteQuery.radius = [GlobalConfig sharedInstance].kMoscowRadius;
self.autocompleteQuery.countryCode = #"RU";
Then I want to get all values for input string from UITextField on 'valueChanged' event:
self.autocompleteQuery.input = [streetName stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
[self.autocompleteQuery fetchPlaces:^(NSArray *places, NSError *error) {
[self loaderStopAnimating];
if (places) {
//do some stuff
} else {
FFError *detectedError = [FFError errorWithNSError:error];
[self showErrorMessage:[detectedError errorMessage]];
}
}];
So when I type 'k' I get response with streets and if I add next char to my text field I receive OVER_QUERY_LIMIT every time. I've tried it on simulator and devices with the same result. And it starts working again after 10-20 sec. I don't use loops or smth similar, I just want to get suggestions for input string in real time, but I can't get it because of error. What should I do to avoid it?
For the web service request, use a key.
Follow this :https://developers.google.com/maps/documentation/geocoding/start#api_key
Doc says:
Note: Maps for Work users must include client and signature parameters with their requests instead of a key.
All Geocoding API applications should use an API key. Including a key in your request:
Allows you to monitor your application's API usage in the Google Developers Console. Enables per-key instead of per-IP-address quota limits. Ensures that Google can contact you about your application if necessary. The Geocoding API uses an API key to identify your application. API keys are managed through the Google APIs console. To create your key:
Visit the APIs console at Google Developers Console and log in with your Google Account. Click the Services link from the left-hand menu in the APIs Console, then activate the Geocoding API service. Once the service has been activated, your API key is available from the API > Access page, in the Simple API Access section. Geocoding API applications use the Key for server apps. To specify a key in your request, include it as the value of a key parameter.
Note: By default, a key can be used from any server. We strongly recommend that you restrict the use of your key by IP address to servers that you administer. You can specify which IP addresses are allowed to use your API key by clicking the Edit allowed referers... link in the API console.
Note: HTTPS is enforced for requests that include an API key.
Suppose, the webservice provider's server exposing the webservice in the form http://example.com:8000/api
What is best framework or library to access the webservice in ios 7 project
There are a few marshaling frameworks that support generating an object-graph from XML, however I would simply go for the following:
Invoke the service endpoint. My favorite library is BBHTTP, however you could use AFNetworking, NSURLConnection with gcd or whatever you prefer for asynch network calls.
Extract the relevant contents of the XML payload onto your use-case specific payload object using RaptureXML
I recommend having use-case specific payload objects because they model exactly what is needed for a given service invocation - supporting the notion of contract-first development. This allows you to change you internal model without effecting the integration to external systems. Similarly the external API can change without effecting your model.
You can create a category method on RXMLElement to return the element mapped to a use-case-specific object. A typical mapping usually takes just a handful of lines of code to marshal from wire-format to your payload object for the service invocation.
Here's an example (the code that I took it from wanted the payload wrapped in a SOAP envelope - just ignore that bit).
- (void)request:(MyUseCaseRequstPayload*)request onComplete:(void (^)(MyResponsePayload*))onSuccess
onError:(void (^)(NSError*))onError;
{
//Even more XML! You can stick your payload inside an envelope if you want
SoapEnvelope* envelope = [SoapEnvelope envelopeWithContent:[request xmlString]];
[[BBHTTPRequest postToURL:_serviceUrl data:[envelope data] contentType:#"text/xml"] execute:^(BBHTTPResponse* response)
{
RXMLElement* element = [RXMLElement elementFromXMLData:[response content]];
MyResponsePayload* response = [[element child:#"elementToBeMapped"] asMyObjectType];
if (onSuccess)
{
onSuccess(response);
}
} error:^(NSError* error)
{
LogDebug(#"Got error: %#", error);
if (onError)
{
onError(error);
}
}];
}
I'm working on an app which primarily works with an API that will be installed in an internal system. The API is also accessible via the public internet. The client wants to allow users to enter both an internal and external (public internet) URL that the app will then connect to depending on availability of the internal and external URLs.
The app is basically done with the exception that it currently connects to the internal URL only for all it's API calls. I'm using AFNetworking with block-based completion/failure invocations for each API call.
Based on the logic that we have designed, the app will always check for the API's availability by querying for the server's current time. This is done by calling http://internal_url/api/time. If this API fails to return an appropriate respond, we'll switch to the external URL http://external_url/api/time and call the same API on that URL. If both fails, the app will inform the user accordingly and not perform any other queries to the API.
Without revealing too much, here's some code on how I the API calls are currently setup:
- (void)someAPIMethodCall:(NSDictionary *)parameters completionBlock:block failure:block {
// query /api/time and return the URL (internal/external) that is currently up
AFHTTPClient *client = [AFHTTPClient clientWithBaseURL:<url returned from above query>];
[client operationWithSuccess:block failure:block];
}
So my question would be: what is the best way to get the query /api/time method above to work? Obviously, this method needs to complete and return either the internal/external URL so that the subsequent actual API query could use. AFAIK, AFNetworking calls are block-based so it will return before the above /api/time returns. I've also thought of a separate class that uses NSURLConnection synchronously which will block the main-thread while it waits for the /api/time to return.
I'd like to tell you to simply use the same URL internally and externally (via DNS) but that's not what you want.
I think you're asking how to conditionally call the other url.
You want someAPIMethodCall to be asynchronous... so you don't want to block on the call to checking for the correct api to call.
Aside from caching the results so you don't have to do this every time, you simply want to call another block based method of your own that has a completion block which passes IN a parameter of the URL to call for your real query.
- (void)someAPIMethodCall:(NSDictionary *)parameters completionBlock:(void (^)(void))succesBlock failure((^)(void)):failureBlock {
[self callBlockWithMyApiUrl:^(NSString *apiUrl){
AFHTTPClient *client = [AFHTTPClient clientWithBaseURL:apiUrl];
[client operationWithSuccess:successBlock failure:failureBlock];
} onFailure:^{
failureBlock
}
}
- (NSString *)callBlockWithMyApiUrl:(NSString * (^)(void))success (void (^)(void))failure
{
// Your code to test for the working URI
// If you're doing it this way, I'd suggest caching the result.
// Subscribe to networking interface changes to dump the cache.
}