angular-cn/scripts/ci/payload-size.js

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'use strict';
// Imports
const fs = require('fs');
// Get branch and project name from command line arguments.
const [, , limitFile, project, branch, commit] = process.argv;
// Load sizes.
const currentSizes = JSON.parse(fs.readFileSync('/tmp/current.log', 'utf8'));
const allLimitSizes = JSON.parse(fs.readFileSync(limitFile, 'utf8'));
const limitSizes = allLimitSizes[project][branch] || allLimitSizes[project]['master'];
// Check current sizes against limits.
let failed = false;
const successMessages = [];
const failureMessages = [];
for (const compressionType in limitSizes) {
if (typeof limitSizes[compressionType] === 'object') {
const limitPerFile = limitSizes[compressionType];
for (const filename in limitPerFile) {
const expectedSize = limitPerFile[filename];
const actualSize = currentSizes[`${compressionType}/${filename}`];
if (actualSize === undefined) {
failed = true;
// An expected compression type/file combination is missing. Maybe the file was renamed or
// removed. Report it as an error, so the user updates the corresponding limit file.
console.log(
`ERROR: Commit ${commit} ${compressionType} ${filename} measurement is missing. ` +
'Maybe the file was renamed or removed.');
} else {
const absoluteSizeDiff = Math.abs(actualSize - expectedSize);
// If size diff is larger than 1% or 500 bytes...
if (absoluteSizeDiff > 500 || absoluteSizeDiff > expectedSize / 100) {
failed = true;
// We must also catch when the size is significantly lower than the payload limit, so
// we are forced to update the expected payload number when the payload size reduces.
// Otherwise, we won't be able to catch future regressions that happen to be below
// the artificially inflated limit.
const operator = actualSize > expectedSize ? 'exceeded' : 'fell below';
failureMessages.push(
`FAIL: Commit ${commit} ${compressionType} ${filename} ${operator} expected size by 500 bytes or >1% ` +
`(expected: ${expectedSize}, actual: ${actualSize}).`);
} else {
successMessages.push(`SUCCESS: Commit ${commit} ${compressionType} ${filename} did NOT cross size threshold of 500 bytes or >1% ` +
`(expected: ${expectedSize}, actual: ${actualSize}).`);
}
}
}
}
}
// Group failure messages separately from success messages so they are easier to find.
successMessages.concat(failureMessages).forEach(message => console.log(message));
if (failed) {
console.log(`If this is a desired change, please update the size limits in file '${limitFile}'.`);
process.exit(1);
} else {
console.log(`Payload size check passed. All diffs are less than 1% or 500 bytes.`);
}