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Implement SQL query to compare impact of using auto-sizes plugin for sizes=auto functionality #162

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Nov 15, 2024
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Implement SQL query to compare impact of using auto-sizes plugin for sizes=auto functionality #162

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188 changes: 188 additions & 0 deletions sql/2024/10/auto-sizes-impact-before-after.sql
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# HTTP Archive query to compare the image sizes attribute impact of using the `auto-sizes` plugin.
#
# WPP Research, Copyright 2024 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# See https://github.com/GoogleChromeLabs/wpp-research/pull/162

# This intentionally queries between May and June, since in July additional functionality was added to the
# `auto-sizes` plugin, which we do not want to influence the results here.
DECLARE DATE_BEFORE DATE DEFAULT '2024-05-01';
DECLARE DATE_AFTER DATE DEFAULT '2024-06-01';

CREATE TEMPORARY FUNCTION GET_IMG_SIZES_ACCURACY(custom_metrics STRING) RETURNS
ARRAY<STRUCT<url STRING,
hasSrcset BOOL,
hasSizes BOOL,
sizesAbsoluteError FLOAT64,
sizesRelativeError FLOAT64,
idealSizesSelectedResourceEstimatedPixels INT64,
actualSizesEstimatedWastedLoadedPixels INT64,
relativeSizesEstimatedWastedLoadedPixels FLOAT64,
idealSizesSelectedResourceEstimatedBytes FLOAT64,
actualSizesEstimatedWastedLoadedBytes FLOAT64,
relativeSizesEstimatedWastedLoadedBytes FLOAT64>>
AS (
ARRAY(
SELECT AS STRUCT
CAST(JSON_EXTRACT_SCALAR(image, '$.url') AS STRING) AS url,
CAST(JSON_EXTRACT_SCALAR(image, '$.hasSrcset') AS BOOL) AS hasSrcset,
CAST(JSON_EXTRACT_SCALAR(image, '$.hasSizes') AS BOOL) AS hasSizes,
CAST(JSON_EXTRACT_SCALAR(image, '$.sizesAbsoluteError') AS FLOAT64) AS sizesAbsoluteError,
CAST(JSON_EXTRACT_SCALAR(image, '$.sizesRelativeError') AS FLOAT64) AS sizesRelativeError,
CAST(JSON_EXTRACT_SCALAR(image, '$.idealSizesSelectedResourceEstimatedPixels') AS INT64) AS idealSizesSelectedResourceEstimatedPixels,
CAST(JSON_EXTRACT_SCALAR(image, '$.actualSizesEstimatedWastedLoadedPixels') AS INT64) AS actualSizesEstimatedWastedLoadedPixels,
SAFE_DIVIDE(
CAST(JSON_EXTRACT_SCALAR(image, '$.actualSizesEstimatedWastedLoadedPixels') AS INT64),
CAST(JSON_EXTRACT_SCALAR(image, '$.idealSizesSelectedResourceEstimatedPixels') AS INT64)
) AS relativeSizesEstimatedWastedLoadedPixels,
CAST(JSON_EXTRACT_SCALAR(image, '$.idealSizesSelectedResourceEstimatedBytes') AS FLOAT64) AS idealSizesSelectedResourceEstimatedBytes,
CAST(JSON_EXTRACT_SCALAR(image, '$.actualSizesEstimatedWastedLoadedBytes') AS FLOAT64) AS actualSizesEstimatedWastedLoadedBytes,
SAFE_DIVIDE(
CAST(JSON_EXTRACT_SCALAR(image, '$.actualSizesEstimatedWastedLoadedBytes') AS FLOAT64),
CAST(JSON_EXTRACT_SCALAR(image, '$.idealSizesSelectedResourceEstimatedBytes') AS FLOAT64)
) AS relativeSizesEstimatedWastedLoadedBytes,
FROM
UNNEST(JSON_EXTRACT_ARRAY(custom_metrics, '$.responsive_images.responsive-images')) AS image
)
);

CREATE TEMPORARY FUNCTION IS_CMS(technologies ARRAY<STRUCT<technology STRING, categories ARRAY<STRING>, info ARRAY<STRING>>>, cms STRING, version STRING) RETURNS BOOL AS (
EXISTS(
SELECT * FROM UNNEST(technologies) AS technology, UNNEST(technology.info) AS info
WHERE technology.technology = cms
AND (
version = ""
OR ENDS_WITH(version, ".x") AND (STARTS_WITH(info, RTRIM(version, "x")) OR info = RTRIM(version, ".x"))
OR info = version
)
)
);

CREATE TEMPORARY FUNCTION GET_GENERATOR_CONTENTS(custom_metrics STRING) RETURNS ARRAY<STRING> AS (
ARRAY(
SELECT
JSON_EXTRACT_SCALAR(metaNode, '$.content') AS content
FROM
UNNEST(JSON_EXTRACT_ARRAY(JSON_EXTRACT(custom_metrics, '$.almanac.meta-nodes.nodes'))) AS metaNode
WHERE
JSON_EXTRACT_SCALAR(metaNode, '$.name') = 'generator'
)
);

CREATE TEMPORARY FUNCTION HAS_GENERATOR(custom_metrics STRING, identifier STRING) RETURNS BOOL AS (
EXISTS(
SELECT
*
FROM
UNNEST(GET_GENERATOR_CONTENTS(custom_metrics)) AS generator
WHERE
generator LIKE CONCAT(identifier, ' %')
)
);

WITH relevantUrlsAfter AS (
SELECT
client,
page,
custom_metrics
FROM
`httparchive.all.pages`
WHERE
date = DATE_AFTER
AND is_root_page = TRUE
AND IS_CMS(technologies, 'WordPress', '')
AND HAS_GENERATOR(custom_metrics, 'auto-sizes') = TRUE
),

relevantUrlsBefore AS (
SELECT
client,
page,
before.custom_metrics AS custom_metrics
FROM
`httparchive.all.pages` AS before
INNER JOIN
relevantUrlsAfter AS after
USING
(client, page)
WHERE
date = DATE_BEFORE
AND is_root_page = TRUE
AND IS_CMS(technologies, 'WordPress', '')
AND HAS_GENERATOR(before.custom_metrics, 'auto-sizes') = FALSE
),

imageSizesDataAfter AS (
SELECT
client,
page,
image.url AS image_url,
image
FROM
relevantUrlsAfter,
UNNEST(GET_IMG_SIZES_ACCURACY(custom_metrics)) AS image
WHERE
image.hasSrcset = TRUE
AND image.hasSizes = TRUE
),

imageSizesDataBefore AS (
SELECT
client,
page,
image.url AS image_url,
image
FROM
relevantUrlsBefore,
UNNEST(GET_IMG_SIZES_ACCURACY(custom_metrics)) AS image
WHERE
image.hasSrcset = TRUE
AND image.hasSizes = TRUE
)

SELECT
client,
percentile,
COUNT(DISTINCT page) AS numSites,
COUNT(image_url) AS numImages,
APPROX_QUANTILES(before.image.sizesAbsoluteError, 100)[OFFSET(percentile)] AS sizesAbsoluteErrorBefore,
APPROX_QUANTILES(before.image.sizesRelativeError, 100)[OFFSET(percentile)] AS sizesRelativeErrorBefore,
APPROX_QUANTILES(before.image.idealSizesSelectedResourceEstimatedPixels, 100)[OFFSET(percentile)] AS idealSizesSelectedResourceEstimatedPixelsBefore,
APPROX_QUANTILES(before.image.actualSizesEstimatedWastedLoadedPixels, 100)[OFFSET(percentile)] AS actualSizesEstimatedWastedLoadedPixelsBefore,
APPROX_QUANTILES(before.image.relativeSizesEstimatedWastedLoadedPixels, 100)[OFFSET(percentile)] AS relativeSizesEstimatedWastedLoadedPixelsBefore,
APPROX_QUANTILES(before.image.idealSizesSelectedResourceEstimatedBytes, 100)[OFFSET(percentile)] AS idealSizesSelectedResourceEstimatedBytesBefore,
APPROX_QUANTILES(before.image.actualSizesEstimatedWastedLoadedBytes, 100)[OFFSET(percentile)] AS actualSizesEstimatedWastedLoadedBytesBefore,
APPROX_QUANTILES(before.image.relativeSizesEstimatedWastedLoadedBytes, 100)[OFFSET(percentile)] AS relativeSizesEstimatedWastedLoadedBytesBefore,
APPROX_QUANTILES(after.image.sizesAbsoluteError, 100)[OFFSET(percentile)] AS sizesAbsoluteErrorAfter,
APPROX_QUANTILES(after.image.sizesRelativeError, 100)[OFFSET(percentile)] AS sizesRelativeErrorAfter,
APPROX_QUANTILES(after.image.idealSizesSelectedResourceEstimatedPixels, 100)[OFFSET(percentile)] AS idealSizesSelectedResourceEstimatedPixelsAfter,
APPROX_QUANTILES(after.image.actualSizesEstimatedWastedLoadedPixels, 100)[OFFSET(percentile)] AS actualSizesEstimatedWastedLoadedPixelsAfter,
APPROX_QUANTILES(after.image.relativeSizesEstimatedWastedLoadedPixels, 100)[OFFSET(percentile)] AS relativeSizesEstimatedWastedLoadedPixelsAfter,
APPROX_QUANTILES(after.image.idealSizesSelectedResourceEstimatedBytes, 100)[OFFSET(percentile)] AS idealSizesSelectedResourceEstimatedBytesAfter,
APPROX_QUANTILES(after.image.actualSizesEstimatedWastedLoadedBytes, 100)[OFFSET(percentile)] AS actualSizesEstimatedWastedLoadedBytesAfter,
APPROX_QUANTILES(after.image.relativeSizesEstimatedWastedLoadedBytes, 100)[OFFSET(percentile)] AS relativeSizesEstimatedWastedLoadedBytesAfter,
FROM
imageSizesDataBefore AS before,
UNNEST([10, 20, 30, 40, 50, 60, 70, 80, 90]) AS percentile
INNER JOIN
imageSizesDataAfter AS after
USING
(client, page, image_url)
GROUP BY
client,
percentile
ORDER BY
client,
percentile
4 changes: 4 additions & 0 deletions sql/README.md
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Expand Up @@ -20,6 +20,10 @@ For additional considerations for writing BigQuery queries against HTTP Archive,

## Query index

### 2024/10

* [Image sizes attribute impact of using the `auto-sizes` plugin](./2024/10/auto-sizes-impact-before-after.sql)

### 2024/08

* [Active install counts for Performance Lab plugins (with or without the Performance Lab plugin)](./2024/08/performance-lab-plugins-adoption.sql)
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