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[Visualizations] Expensive queries are causing unnecessary load and delays on Elasticsearch #99031

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merged 9 commits into from
Aug 30, 2021
Merged

[Visualizations] Expensive queries are causing unnecessary load and delays on Elasticsearch #99031

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57dcc8b
[Visualizations] Expensive queries are causing unnecessary load and d…
alexwizp May 3, 2021
be17145
fix CI
alexwizp May 3, 2021
480e392
Merge branch 'master' into visualizations_93770
kibanamachine May 5, 2021
94898df
Merge remote-tracking branch 'upstream/master' into visualizations_93770
alexwizp Aug 26, 2021
2e1509c
fix typo
alexwizp Aug 27, 2021
390b601
Merge remote-tracking branch 'upstream/master' into visualizations_93770
alexwizp Aug 27, 2021
a8918ef
fix namespaces issue
alexwizp Aug 27, 2021
2684af9
fix tests
alexwizp Aug 27, 2021
29f119c
Merge branch 'master' into visualizations_93770
kibanamachine Aug 30, 2021
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24 changes: 10 additions & 14 deletions src/plugins/visualizations/server/plugin.ts
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Expand Up @@ -8,33 +8,29 @@

import { i18n } from '@kbn/i18n';
import { schema } from '@kbn/config-schema';
import { Observable } from 'rxjs';
import { UsageCollectionSetup } from 'src/plugins/usage_collection/server';
import {

import { VISUALIZE_ENABLE_LABS_SETTING } from '../common/constants';
import { visualizationSavedObjectType } from './saved_objects';
import { registerVisualizationsCollector } from './usage_collector';

import type { VisualizationsPluginSetup, VisualizationsPluginStart } from './types';
import type {
PluginInitializerContext,
CoreSetup,
CoreStart,
Plugin,
Logger,
} from '../../../core/server';

import { VISUALIZE_ENABLE_LABS_SETTING } from '../common/constants';

import { visualizationSavedObjectType } from './saved_objects';

import { VisualizationsPluginSetup, VisualizationsPluginStart } from './types';
import { registerVisualizationsCollector } from './usage_collector';
import { EmbeddableSetup } from '../../embeddable/server';
import type { UsageCollectionSetup } from '../../usage_collection/server';
import type { EmbeddableSetup } from '../../embeddable/server';
import { visualizeEmbeddableFactory } from './embeddable/visualize_embeddable_factory';

export class VisualizationsPlugin
implements Plugin<VisualizationsPluginSetup, VisualizationsPluginStart> {
private readonly logger: Logger;
private readonly config: Observable<{ kibana: { index: string } }>;

constructor(initializerContext: PluginInitializerContext) {
this.logger = initializerContext.logger.get();
this.config = initializerContext.config.legacy.globalConfig$;
}

public setup(
Expand All @@ -61,7 +57,7 @@ export class VisualizationsPlugin
});

if (plugins.usageCollection) {
registerVisualizationsCollector(plugins.usageCollection, this.config);
registerVisualizationsCollector(plugins.usageCollection);
}

plugins.embeddable.registerEmbeddableFactory(visualizeEmbeddableFactory());
Expand Down
125 changes: 48 additions & 77 deletions src/plugins/visualizations/server/usage_collector/get_usage_collector.test.ts
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Expand Up @@ -7,126 +7,97 @@
*/

import moment from 'moment';
import { ElasticsearchClient } from 'src/core/server';
import { getStats } from './get_usage_collector';
import type { SavedObjectsClientContract } from '../../../../core/server';

const defaultMockSavedObjects = [
{
_id: 'visualization:coolviz-123',
_source: {
type: 'visualization',
visualization: { visState: '{"type": "shell_beads"}' },
updated_at: moment().subtract(7, 'days').startOf('day').toString(),
},
id: 'visualization:coolviz-123',
attributes: { visState: '{"type": "shell_beads"}' },
updated_at: moment().subtract(7, 'days').startOf('day').toString(),
},
];

const enlargedMockSavedObjects = [
// default space
{
_id: 'visualization:coolviz-123',
_source: {
type: 'visualization',
visualization: { visState: '{"type": "cave_painting"}' },
updated_at: moment().subtract(7, 'days').startOf('day').toString(),
},
id: 'visualization:coolviz-123',
attributes: { visState: '{"type": "cave_painting"}' },
updated_at: moment().subtract(7, 'days').startOf('day').toString(),
},
{
_id: 'visualization:coolviz-456',
_source: {
type: 'visualization',
visualization: { visState: '{"type": "printing_press"}' },
updated_at: moment().subtract(20, 'days').startOf('day').toString(),
},
id: 'visualization:coolviz-456',
attributes: { visState: '{"type": "printing_press"}' },
updated_at: moment().subtract(20, 'days').startOf('day').toString(),
},
{
_id: 'meat:visualization:coolviz-789',
_source: {
type: 'visualization',
visualization: { visState: '{"type": "floppy_disk"}' },
updated_at: moment().subtract(2, 'months').startOf('day').toString(),
},
id: 'meat:visualization:coolviz-789',
attributes: { visState: '{"type": "floppy_disk"}' },
updated_at: moment().subtract(2, 'months').startOf('day').toString(),
},
// meat space
{
_id: 'meat:visualization:coolviz-789',
_source: {
type: 'visualization',
visualization: { visState: '{"type": "cave_painting"}' },
updated_at: moment().subtract(89, 'days').startOf('day').toString(),
},
id: 'meat:visualization:coolviz-789',
attributes: { visState: '{"type": "cave_painting"}' },
updated_at: moment().subtract(89, 'days').startOf('day').toString(),
},
{
_id: 'meat:visualization:coolviz-789',
_source: {
type: 'visualization',
visualization: { visState: '{"type": "cuneiform"}' },
updated_at: moment().subtract(5, 'months').startOf('day').toString(),
},
id: 'meat:visualization:coolviz-789',
attributes: { visState: '{"type": "cuneiform"}' },
updated_at: moment().subtract(5, 'months').startOf('day').toString(),
},
{
_id: 'meat:visualization:coolviz-789',
_source: {
type: 'visualization',
visualization: { visState: '{"type": "cuneiform"}' },
updated_at: moment().subtract(2, 'days').startOf('day').toString(),
},
id: 'meat:visualization:coolviz-789',
attributes: { visState: '{"type": "cuneiform"}' },
updated_at: moment().subtract(2, 'days').startOf('day').toString(),
},
{
_id: 'meat:visualization:coolviz-789',
_source: {
type: 'visualization',
visualization: { visState: '{"type": "floppy_disk"}' },
updated_at: moment().subtract(7, 'days').startOf('day').toString(),
},
id: 'meat:visualization:coolviz-789',
attributes: { visState: '{"type": "floppy_disk"}' },
updated_at: moment().subtract(7, 'days').startOf('day').toString(),
},
// cyber space
{
_id: 'cyber:visualization:coolviz-789',
_source: {
type: 'visualization',
visualization: { visState: '{"type": "floppy_disk"}' },
updated_at: moment().subtract(7, 'months').startOf('day').toString(),
},
id: 'cyber:visualization:coolviz-789',
attributes: { visState: '{"type": "floppy_disk"}' },
updated_at: moment().subtract(7, 'months').startOf('day').toString(),
},
{
_id: 'cyber:visualization:coolviz-789',
_source: {
type: 'visualization',
visualization: { visState: '{"type": "floppy_disk"}' },
updated_at: moment().subtract(3, 'days').startOf('day').toString(),
},
id: 'cyber:visualization:coolviz-789',
attributes: { visState: '{"type": "floppy_disk"}' },
updated_at: moment().subtract(3, 'days').startOf('day').toString(),
},
{
_id: 'cyber:visualization:coolviz-123',
_source: {
type: 'visualization',
visualization: { visState: '{"type": "cave_painting"}' },
updated_at: moment().subtract(15, 'days').startOf('day').toString(),
},
id: 'cyber:visualization:coolviz-123',
attributes: { visState: '{"type": "cave_painting"}' },
updated_at: moment().subtract(15, 'days').startOf('day').toString(),
},
];

describe('Visualizations usage collector', () => {
const mockIndex = '';

const getMockCallCluster = (hits: unknown[]) =>
({
search: () => Promise.resolve({ body: { hits: { hits } } }) as unknown,
} as ElasticsearchClient);
const getMockCallCluster = (savedObjects: unknown[]) =>
(({
createPointInTimeFinder: jest.fn().mockResolvedValue({
close: jest.fn(),
find: function* asyncGenerator() {
yield { saved_objects: savedObjects };
},
}),
} as unknown) as SavedObjectsClientContract);

test('Returns undefined when no results found (undefined)', async () => {
const result = await getStats(getMockCallCluster(undefined as any), mockIndex);
const result = await getStats(getMockCallCluster(undefined as any));

expect(result).toBeUndefined();
});

test('Returns undefined when no results found (0 results)', async () => {
const result = await getStats(getMockCallCluster([]), mockIndex);
const result = await getStats(getMockCallCluster([]));
expect(result).toBeUndefined();
});

test('Summarizes visualizations response data', async () => {
const result = await getStats(getMockCallCluster(defaultMockSavedObjects), mockIndex);
const result = await getStats(getMockCallCluster(defaultMockSavedObjects));

expect(result).toMatchObject({
shell_beads: {
Expand Down Expand Up @@ -181,7 +152,7 @@ describe('Visualizations usage collector', () => {
},
};

const result = await getStats(getMockCallCluster(enlargedMockSavedObjects), mockIndex);
const result = await getStats(getMockCallCluster(enlargedMockSavedObjects));

expect(result).toMatchObject(expectedStats);
});
Expand Down
102 changes: 45 additions & 57 deletions src/plugins/visualizations/server/usage_collector/get_usage_collector.ts
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Expand Up @@ -6,12 +6,11 @@
* Side Public License, v 1.
*/

import { countBy, get, groupBy, mapValues, max, min, values } from 'lodash';
import { ElasticsearchClient } from 'kibana/server';
import type { estypes } from '@elastic/elasticsearch';

import { countBy, groupBy, mapValues, max, min, values } from 'lodash';
import { getPastDays } from './get_past_days';
type ESResponse = estypes.SearchResponse<{ visualization: { visState: string } }>;

import type { SavedObjectsClientContract, SavedObjectsFindResult } from '../../../../core/server';
import type { SavedVisState } from '../../../visualizations/common';

interface VisSummary {
type: string;
Expand All @@ -35,61 +34,50 @@ export interface VisualizationUsage {
* Parse the response data into telemetry payload
*/
export async function getStats(
esClient: ElasticsearchClient,
index: string
soClient: SavedObjectsClientContract
): Promise<VisualizationUsage | undefined> {
const searchParams = {
size: 10000, // elasticsearch index.max_result_window default value
index,
ignoreUnavailable: true,
filterPath: [
'hits.hits._id',
'hits.hits._source.visualization',
'hits.hits._source.updated_at',
],
body: {
query: {
bool: { filter: { term: { type: 'visualization' } } },
},
},
};
const { body: esResponse } = await esClient.search<ESResponse>(searchParams);
const size = get(esResponse, 'hits.hits.length', 0);
if (size < 1) {
return;
}

// `map` to get the raw types
const visSummaries: VisSummary[] = esResponse.hits.hits.map((hit) => {
const spacePhrases = hit._id.toString().split(':');
const lastUpdated: string = get(hit, '_source.updated_at');
const space = spacePhrases.length === 3 ? spacePhrases[0] : 'default'; // if in a custom space, the format of a saved object ID is space:type:id
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this code was removed because we can get space in more legal way from so.namespaces

const visualization = get(hit, '_source.visualization', { visState: '{}' });
const visState: { type?: string } = JSON.parse(visualization.visState);
return {
type: visState.type || '_na_',
space,
past_days: getPastDays(lastUpdated),
};
const finder = await soClient.createPointInTimeFinder({
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my question applies to all refactored telemetries (#98903, #98914, #99023) where we replaced esClient with soClient.
During my testing today, I found that this finder returns only data for the default namespace. If I create visualizations for a non-default namespace, this will not be reflected in the telemetry.

I've tried to fix that by adding namespaces: ['*'], but with that argument pagination doesn't work. see:
image

@lukeelmers @afharo could you please help me a little cause we have a recommendation to use soClient ( #88604 (comment) ) for telemetry with pagination.

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Ah, yeah we specifically decided against adding namespace support when using PIT until we had a concrete need for it. I guess we do now 🙂

I've created an issue to track this enhancement: #99044

@afharo WDYT, do we push forward on this work without soClient (or with using traditional pagination which typically works with <10k results), or do we wait until such a time as we have namespace support in #99044?

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I vote to wait, because the code with soClient looks easier to me + we don't need to implement paging ourselves. If I'm not mistaken in esClient we don't have a simple wrapper like createPointInTimeFinder . + #88604 (comment)

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do we push forward on this work without soClient

IMO, it feels like we keep coming back and forth with this conversation. And, usually, AFAIK, the general recommendation is to use the SO Client whenever possible because using plain ES client requests would break if/when we change the internal implementations of SOs (underlying indices, ways to store them, ...).

I'm not fully familiar with the limitations of allowing namespaces: ['*']. I need to better understand the reasons exposed in #99044 before recommending migrating to esClient as a workaround :)

So ++ to wait :)

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@afharo afharo May 5, 2021 •
edited
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I've been playing around with this PR locally, and I think these changes would solve the issue: alexwizp#6

I tested it locally and it works as expected to me :)

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Nevermind, I don't know how I thought it worked when I tried... It's def not working 🤷

Sorry about that! Then, we need to rely on the outcome of #99044

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@lukeelmers lukeelmers May 5, 2021 •
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So I guess the question remains, do we adjust the scope of this PR as follows?

  • Size parameter was changed from 10000 to 1000
  • Code was refactored to use soClient instead of esClient
  • The paging is used through the soClient.createPointInTimeFinder method
  • Code was optimized, extra cycles were removed

Basically, since @alexwizp has already started the work, is it worth merging with the same 10k size, only switching to SO client instead? Or do we close this PR and consider it blocked by #99044? WDYT @alexwizp @afharo

(Either way it doesn't actually resolve #93770, it would just be a small refactor if we moved ahead)

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I don't see a lot of sense just to switch esClient -> soClient. We started that work to resolve #93770.
But on the other hand I'm ok to use soClient with size === 10000. it adds more contributions to my piggy bank =)

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++ to what @alexwizp said. I guess the question is how long would it take us to fix #99044? If it's just a couple of weeks, probably it's worth putting this PR on hold and rebase when ready?

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I will add #99044 to our list of items to discuss for our next sprint. I don't think it would be a particularly large amount of work, it's mostly about deciding on a strategy with the security team & ensuring there's adequate test coverage.

type: 'visualization',
perPage: 1000,
namespaces: ['*'],
});

// organize stats per type
const visTypes = groupBy(visSummaries, 'type');
const visSummaries: VisSummary[] = [];

// get the final result
return mapValues(visTypes, (curr) => {
const total = curr.length;
const spacesBreakdown = countBy(curr, 'space');
const spaceCounts: number[] = values(spacesBreakdown);
for await (const response of finder.find()) {
(response.saved_objects || []).forEach((so: SavedObjectsFindResult<any>) => {
if (so.attributes?.visState) {
const visState: SavedVisState = JSON.parse(so.attributes.visState);

return {
total,
spaces_min: min(spaceCounts),
spaces_max: max(spaceCounts),
spaces_avg: total / spaceCounts.length,
saved_7_days_total: curr.filter((c) => c.past_days <= 7).length,
saved_30_days_total: curr.filter((c) => c.past_days <= 30).length,
saved_90_days_total: curr.filter((c) => c.past_days <= 90).length,
};
});
visSummaries.push({
type: visState.type ?? '_na_',
space: so.namespaces?.[0] ?? 'default',
past_days: getPastDays(so.updated_at!),
});
}
});
}
await finder.close();

if (visSummaries.length) {
// organize stats per type
const visTypes = groupBy(visSummaries, 'type');

// get the final result
return mapValues(visTypes, (curr) => {
const total = curr.length;
const spacesBreakdown = countBy(curr, 'space');
const spaceCounts: number[] = values(spacesBreakdown);

return {
total,
spaces_min: min(spaceCounts),
spaces_max: max(spaceCounts),
spaces_avg: total / spaceCounts.length,
saved_7_days_total: curr.filter((c) => c.past_days <= 7).length,
saved_30_days_total: curr.filter((c) => c.past_days <= 30).length,
saved_90_days_total: curr.filter((c) => c.past_days <= 90).length,
};
});
}
}
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