overleaf/services/spelling/app/js/HealthCheckController.js

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const request = require('request')
const logger = require('logger-sharelatex')
const settings = require('settings-sharelatex')
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const OError = require('@overleaf/o-error')
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module.exports = {
healthCheck(req, res) {
const opts = {
url: `http://localhost:3005/user/${settings.healthCheckUserId}/check`,
json: {
words: ['helllo'],
language: 'en'
},
timeout: 1000 * 20
}
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return request.post(opts, function (err, response, body) {
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if (err != null) {
return res.sendStatus(500)
}
const misspellings =
body && body.misspellings ? body.misspellings[0] : undefined
const numberOfSuggestions =
misspellings && misspellings.suggestions
? misspellings.suggestions.length
: 0
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if (numberOfSuggestions > 10) {
logger.log('health check passed')
res.sendStatus(200)
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} else {
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logger.err(
new OError('health check failed', { body, numberOfSuggestions })
)
res.sendStatus(500)
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}
})
}
}