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(function() {
"use strict";
load("skunk_shared.js"); // For 'SharedSkunkState.'
const collNaive = db.naive;
const collAttributePattern = db.attribute_pattern;
const collEnhancedAttributePattern = db.enhanced_attribute_pattern;
const collSingleWildCard = db.wildcard;
const collCompoundWildCard = db.compound_wildcard;
// Maximum value for the integer fields, minimum is 0
const kMaxInt = 20;
// Minimum and maximum values for the DateTime fields
const kBaseDate = new ISODate("1970-01-01T00:00:00Z");
const kMaxDate = new ISODate("2070-01-01T00:00:00Z");
const kMaximumSeconds = (kMaxDate.getTime() - kBaseDate.getTime()) / 1000;
function addAttributesToQuery(andClauses, attributes, numAttrs, useEnhancedAttributePattern) {
// If this is the attribute field it needs to be a subdocument or sub-array
if (attributes instanceof Array) {
assert.lte(numAttrs, attributes.length);
// Be sure to avoid selecting 'numAttrs' with replacement. If we allow specifying the same
// attribute twice, we are likely to specify a query which is tautalogically false such as
// attr1 = 4 and attr1 = 7.
attributes = attributes.slice(); // Make a copy to avoid modifying the template.
for (let i = 0; i < numAttrs; i++) {
let selectedEntryIndex = Random.randInt(attributes.length);
let attrEntry = attributes[selectedEntryIndex];
attributes.splice(selectedEntryIndex, 1); // Take it out to avoid selecting it again.
if (useEnhancedAttributePattern) {
andClauses.push({
[SharedSkunkState.kAttributesField]:
{k: attrEntry.k, v: SharedSkunkState.getRandomValue(attrEntry.v)}
});
} else {
andClauses.push({
[SharedSkunkState.kAttributesField]: {
$elemMatch:
{k: attrEntry.k, v: SharedSkunkState.getRandomValue(attrEntry.v)}
}
});
}
}
} else {
let attrEntries = Object.entries(attributes);
assert.lte(numAttrs, attrEntries.length);
// Be sure to avoid selecting 'numAttrs' with replacement. If we allow specifying the same
// attribute twice, we are likely to specify a query which is tautalogically false such as
// attr1 = 4 and attr1 = 7.
for (let i = 0; i < numAttrs; i++) {
let selectedEntryIndex = Random.randInt(attrEntries.length);
let [attrKey, attrVal] = attrEntries[selectedEntryIndex];
attrEntries.splice(selectedEntryIndex, 1); // Take it out to avoid selecting it again.
andClauses.push({
[`${SharedSkunkState.kAttributesField}.${attrKey}`]:
SharedSkunkState.getRandomValue(attrVal)
});
}
}
}
// Builds a compound equality query based off the template doc querying 'numField' top level fields
// and 'numAttr' attributes stored within 'SharedSkunkState.kAttributesField'. The fields at the top
// level matter for which index may be applicable, so they will be applied in order given in the
// template document. The attributes will be added randomly - so a query on two attributes may be on
// the 4th and 10th attribute for example.
function buildQuery(template, numFields, numAttrs, useEnhancedAttributePattern) {
let andClauses = [];
let fieldsAdded = 0;
for (let [topKey, topValue] of Object.entries(template)) {
if (fieldsAdded == numFields) {
break;
}
assert(
topKey != SharedSkunkState.kAttributesField,
"Added too many top-level fields. Ran out of non-attribute fields in the template (expected non-attribute fields to come first).");
andClauses.push({[topKey]: SharedSkunkState.getRandomValue(topValue)});
++fieldsAdded;
}
const attributes = template[SharedSkunkState.kAttributesField];
addAttributesToQuery(andClauses, attributes, numAttrs, useEnhancedAttributePattern);
return {$and: andClauses};
}
function avgTime(func, runs) {
let a = [];
runs = runs || 10;
for (var i = 0; i < runs; i++) {
a.push(Date.timeFunc(func))
}
let out = {avg: Array.avg(a), stdDev: Array.stdDev(a)};
out.sampStdDev = Math.sqrt((1 / (runs - 1)) * (out.stdDev * out.stdDev));
return out;
}
function buildBatchOfQueries(template, numFields, numAttrs, useEnhancedAttributePattern) {
const kNumUniqueQueries = 1000;
let allQueries = [];
for (let i = 0; i < kNumUniqueQueries; i++) {
allQueries.push(buildQuery(template, numFields, numAttrs, useEnhancedAttributePattern));
}
return allQueries;
}
function runQueries(collection, queryBatch) {
let numResults = [];
for (let query of queryBatch) {
numResults.push(collection.find(query).itcount());
}
print("Average number of results: " + Array.avg(numResults));
}
function testAllNumAttrs(collection, templateDoc, maxNumAttrs, useEnhancedAttributePattern) {
let allTimingInfo = [];
for (let numAttrs = 1; numAttrs <= maxNumAttrs; ++numAttrs) {
let queries = buildBatchOfQueries(templateDoc, 3, numAttrs, useEnhancedAttributePattern);
jsTestLog("Example query: " + tojson(queries[0]));
jsTestLog(`About to benchmark with ${numAttrs} attributes...`);
let timingInfo = avgTime(() => runQueries(collection, queries), 5);
jsTestLog("Avg time: " + tojson(timingInfo));
allTimingInfo.push(timingInfo);
}
return allTimingInfo;
}
const kMaxNumAttrs = 5;
let allStats = {};
jsTestLog("Testing compound wildcard configuration...");
let allTimingInfo =
testAllNumAttrs(collCompoundWildCard, SharedSkunkState.kTemplateDoc, kMaxNumAttrs);
allStats.compoundWildcard = {
timingInfo: allTimingInfo
};
jsTestLog("Testing enhanced attribute configuration...");
allTimingInfo = testAllNumAttrs(
collEnhancedAttributePattern, SharedSkunkState.kAttributeTemplateDoc, kMaxNumAttrs, true);
allStats.enhancedAttributePattern = {
timingInfo: allTimingInfo
};
jsTestLog("Testing attribute configuration...");
allTimingInfo =
testAllNumAttrs(collAttributePattern, SharedSkunkState.kAttributeTemplateDoc, kMaxNumAttrs);
allStats.attributePattern = {
timingInfo: allTimingInfo
};
jsTestLog("Testing naive configuration...");
allTimingInfo = testAllNumAttrs(collNaive, SharedSkunkState.kTemplateDoc, kMaxNumAttrs);
allStats.naive = {
timingInfo: allTimingInfo
};
/*
jsTestLog("Testing wildcard configuration...");
allTimingInfo = testAllNumAttrs(collSingleWildCard, SharedSkunkState.kTemplateDoc, kMaxNumAttrs);
allStats.singleWildcard = {
timingInfo: allTimingInfo
};
*/
jsTestLog("Finished! " + tojson(allStats));
}());
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