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[Example] Add historic, lad imagery providers

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This commit is contained in:
Pete Richards
2017-06-21 14:17:18 -07:00
parent 1ab4cf68d7
commit e6d65f3549
1 changed files with 53 additions and 25 deletions
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78
example/imagery/plugin.js
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@ -48,6 +48,56 @@ define([
"https://www.hq.nasa.gov/alsj/a16/AS16-117-18748.jpg" "https://www.hq.nasa.gov/alsj/a16/AS16-117-18748.jpg"
]; ];
function pointForTimestamp(timestamp) {
return {
utc: Math.floor(timestamp / 5000) * 5000,
url: IMAGE_SAMPLES[Math.floor(timestamp / 5000) % IMAGE_SAMPLES.length]
};
}
var realtimeProvider = {
supportsSubscribe: function (domainObject) {
return domainObject.type === 'example.imagery';
},
subscribe: function (domainObject, callback) {
var interval = setInterval(function () {
callback(pointForTimestamp(Date.now()));
}, 5000);
return function (interval) {
clearInterval(interval);
};
}
};
var historicalProvider = {
supportsRequest: function (domainObject, options) {
return domainObject.type === 'example.imagery'
&& options.strategy !== 'latest';
},
request: function (domainObject, options) {
var start = options.start;
var end = options.end;
var data = [];
while (start < end) {
data.push(pointForTimestamp(start));
start += 5000;
}
return Promise.resolve(data);
}
};
var ladProvider = {
supportsRequest: function (domainObject, options) {
return domainObject.type === 'example.imagery' &&
options.strategy === 'latest';
},
request: function (domainObject, options) {
return Promise.resolve([pointForTimestamp(Date.now())]);
}
};
return function install(openmct) { return function install(openmct) {
openmct.types.addType('example.imagery', { openmct.types.addType('example.imagery', {
key: 'example.imagery', key: 'example.imagery',
@ -80,31 +130,9 @@ define([
} }
}); });
openmct.telemetry.addProvider({ openmct.telemetry.addProvider(realtimeProvider);
supportsSubscribe: function (domainObject) { openmct.telemetry.addProvider(historicalProvider);
return domainObject.type === 'example.imagery'; openmct.telemetry.addProvider(ladProvider);
},
subscribe: function (domainObject, callback) {
var index = 0,
end = IMAGE_SAMPLES.length,
interval;
interval = setInterval(function () {
if (index >= end) {
index = 0;
}
callback({
utc: Date.now(),
url: IMAGE_SAMPLES[index]
});
index += 1;
}, 5000);
return function (interval) {
clearInterval(interval);
};
}
});
}; };
} }