OpenAFs
The default behaviour
In OpenAF when making a REST call if it fails it will look similar to this:var res = $rest().get("http://127.0.0.1:12345");
if (isDef(res.error)) {
logErr("There was an error contacting the service: " + res.error);
} else {
// Process the result
}
Nevertheless you can add the throwExceptions flag so you can handle it differently:
try {
var res = $rest({
throwExceptions: true
})
.get("http://127.0.0.1:12345");
// Process the result
} catch(e) {
logErr("There was an error contacting the service: " + String(e));
}
Another simpler, more elegant, way
But your code starts getting full of exception handling and you just wanted a non-critical information for which a default reply it's okay. Let's say you have a service that returns an array of favourite fruits given a user.The expected behaviour when everything is working would be:
So your code could look like this:
addFavouriteFruitsToDashboard(
$rest()
.post("http://127.0.0.1:12345/getFruits", { user: currentUser })
);The previous code now can look more like this:
addFavouriteFruitsToDashboard(
$rest({
default: {
user : currentUser,
fruits: []
}
})
.post("http://127.0.0.1:12345/getFruits", { user: currentUser })
);
By the way...
By the way, if you want to test it yourself and need a quick dirty rest service you just have to run the following lines:ow.loadServer();
var hs = ow.server.httpd.start(12345);
ow.server.httpd.route(hs, {
"/getFruits": r => {
return ow.server.rest.reply("/getFruits", r,
(idxs, data, req) => {
return {
user: data.user,
fruits: [
'banana',
'apple',
'orange'
]
}
}
)
}
});
log("I'm ready!");
ow.server.daemon();