overleaf/services/web/modules/server-ce-scripts/scripts/check-redis.js

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const RedisWrapper = require('../../../app/src/infrastructure/RedisWrapper')
const rclient = RedisWrapper.client('health_check')
rclient.on('error', err => {
console.error('Cannot connect to redis.')
console.error(err)
process.exit(1)
})
rclient.healthCheck(err => {
if (err) {
console.error('Cannot connect to redis.')
console.error(err)
process.exit(1)
} else {
console.error('Redis is up.')
process.exit(0)
}
})