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[Search] Vary batch size

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When indexing for generic search, issue new batches of
requests as individual requests finish (instead of waiting
for whole batches to finish) varying size to keep the
number of outstanding requests below some maximum.

nasa/openmctweb#141
This commit is contained in:
Victor Woeltjen 2015-09-29 18:35:55 -07:00
parent 85ac4a9a32
commit 78f3f8367e
1 changed files with 27 additions and 22 deletions
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49
platform/search/src/services/GenericSearchProvider.js
View File

@ -31,8 +31,8 @@ define(
var DEFAULT_MAX_RESULTS = 100,
DEFAULT_TIMEOUT = 1000,
FLUSH_SIZE = 24,
FLUSH_INTERVAL = 25,
MAX_CONCURRENT_REQUESTS = 100,
FLUSH_INTERVAL = 180,
stopTime;
/**
@ -53,10 +53,11 @@ define(
function GenericSearchProvider($q, $log, throttle, objectService, workerService, topic, ROOTS) {
var indexed = {},
pendingQueries = {},
toIndex = {},
toRequest = {},
worker = workerService.run('genericSearchWorker'),
mutationTopic = topic("mutation"),
indexingStarted = Date.now(),
pendingRequests = 0,
scheduleFlush;
this.worker = worker;
@ -69,7 +70,7 @@ define(
ids.forEach(function (id) {
if (!indexed[id]) {
indexed[id] = true;
toIndex[id] = true;
toRequest[id] = true;
}
});
scheduleFlush();
@ -125,32 +126,36 @@ define(
}
}
scheduleFlush = throttle(function flush() {
var ids = Object.keys(toIndex).slice(0, FLUSH_SIZE);
// Don't need to look these up next time
ids.forEach(function (id) {
delete toIndex[id];
function requestAndIndex(id) {
delete toRequest[id];
pendingRequests += 1;
objectService.getObjects([id]).then(function (objects) {
if (objects[id]) {
indexItem(objects[id]);
}
}, function () {
$log.warn("Failed to index domain object " + id);
}).then(function () {
pendingRequests -= 1;
scheduleFlush();
});
}
if (ids.length < 1) {
scheduleFlush = throttle(function flush() {
var batchSize =
Math.max(MAX_CONCURRENT_REQUESTS - pendingRequests, 0);
if (Object.keys(toRequest).length + pendingRequests < 1) {
$log.info([
'GenericSearch finished indexing after ',
((Date.now() - indexingStarted) / 1000).toFixed(2),
' seconds.'
].join(''));
return;
} else {
Object.keys(toRequest)
.slice(0, batchSize)
.forEach(requestAndIndex);
}
objectService.getObjects(ids).then(function (objects) {
ids.map(function (id) {
return objects[id];
}).filter(function (object) {
return object;
}).forEach(indexItem);
scheduleFlush();
});
}, FLUSH_INTERVAL);
worker.onmessage = handleResponse;