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// Usage: | |
// $ babel-node keepalive.js > keepalive-code.js && \ | |
// zip keepalive-code.zip keepalive-code.js && \ | |
// aws lambda update-function-code \ | |
// --function-name DawsonKeepAliveProd \ | |
// --zip-file fileb://./keepalive-code.zip && \ | |
// rm keepalive-code* | |
import execa from 'execa'; | |
import assert from 'assert'; | |
const DAWSON_STAGE = process.env.DAWSON_STAGE; | |
assert(DAWSON_STAGE, 'DAWSON_STAGE env is required'); | |
const SNS_FAILURE_TOPIC_ARN = 'arn:aws:sns:eu-west-1:XXX:GePodKeepAliveFailed'; | |
const createInvokeCode = name => { | |
return ` | |
lambda.invoke({ | |
FunctionName: '${name}', | |
InvocationType: 'RequestResponse', | |
LogType: 'None', | |
Payload: JSON.stringify({ __ping: true }) | |
}).promise()`; | |
}; | |
const createFunctionCode = functionNames => { | |
return ` | |
module.exports.handler = function (event, context, callback) { | |
const AWS = require('aws-sdk'); | |
const lambda = new AWS.Lambda({}); | |
Promise.all([ | |
${functionNames.map(name => { | |
return createInvokeCode(name); | |
}).join(',\n')} | |
]) | |
.then(res => { | |
console.error(res.length, 'invocations completed'); | |
console.error('Lambda status codes:', res.map(r => r.StatusCode)); | |
}) | |
.catch(err => { | |
console.error('One invocation failed (aborting whole execution)', err); | |
sns.publish({ | |
TopicArn: '${SNS_FAILURE_TOPIC_ARN}', | |
Message: 'One or more keepalive invocations failed: \\n' + JSON.stringify(err, null, 2) | |
}).promise() | |
.then(() => callback(err.message)) | |
.catch(snsError => callback(snsError.message)); | |
}) | |
}; | |
`; | |
}; | |
execa.shell(`cd .. && dawson describe --shell | grep -i '\\-lambda'`) | |
.then(result => { | |
assert(result.code === 0); | |
const functionNames = result.stdout.split('\n').map(v => v.split('=')[1]); | |
const functionCode = createFunctionCode(functionNames); | |
process.stdout.write(functionCode); | |
}); |
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